[ { "path": ".circleci/config.yml", "content": "version: 2\njobs:\n build:\n working_directory: ~/code\n docker:\n - image: circleci/android:api-29\n environment:\n JVM_OPTS: -Xmx3200m\n MAX_RETRY: 4\n steps:\n - checkout\n - restore_cache:\n key: jars-{{ checksum \"build.gradle\" }}-{{ checksum \"flexbox/build.gradle\" }}\n - run:\n name: Download Dependencies\n command: ./gradlew androidDependencies\n - run:\n name: Set up gcloud service key\n command: |\n if [ -n \"$GCLOUD_SERVICE_KEY\" ]; then echo ${GCLOUD_SERVICE_KEY} | base64 --decode > ${HOME}/client-secret.json ;\n gcloud config set project ${GCLOUD_PROJECT} ;\n gcloud auth activate-service-account ${GCLOUD_SERVICE_ACCOUNT} --key-file ${HOME}/client-secret.json ;\n fi\n - save_cache:\n paths:\n - ~/.gradle\n key: jars-{{ checksum \"build.gradle\" }}-{{ checksum \"flexbox/build.gradle\" }}\n - run:\n name: Build apks\n command: ./gradlew build assembleAndroidTest\n - run:\n name: Run Firebase Test Lab\n command: |\n if [ -n \"$GCLOUD_SERVICE_KEY\" ]; then set +e ;\n counter=0 ;\n result=1 ;\n while [ $result != 0 -a $counter -lt $MAX_RETRY ]; do\n gcloud firebase test android run \\\n --type instrumentation \\\n --app demo-playground/build/outputs/apk/debug/demo-playground-debug.apk \\\n --test flexbox/build/outputs/apk/androidTest/debug/flexbox-debug-androidTest.apk \\\n --device-ids hammerhead,sailfish \\\n --os-version-ids 19,21,23,24,25,26 \\\n --locales en --orientations portrait,landscape \\\n --results-bucket android-devrel-ci-flexbox \\\n --timeout 180s ;\n result=$? ;\n let counter=counter+1 ;\n done\n exit $result ;\n fi\n" }, { "path": ".github/issue_template.md", "content": "- [ ] I have searched [existing issues](https://github.com/google/flexbox-layout/issues) and confirmed this is not a duplicate\n\n## Issues and steps to reproduce\n*Please replace this with steps to reproduce your issue.*\n\n## Expected behavior\n*Please describe what you expected would happen.*\n\n## Version of the flexbox library\n*e.g. 0.2.6, 0.3.0-alpha3*\n\n## Link to code\n*Please link to the code we can use to reproduce this issue.*\n*A complete project we can build/run is preferred, if you can't provide one, please show*\n*us relevant code*\n" }, { "path": ".github/workflows/gradle-wrapper-validation.yml", "content": "name: \"Validate Gradle Wrapper\"\non: [push, pull_request]\n\njobs:\n validation:\n name: \"Validation\"\n runs-on: ubuntu-latest\n steps:\n - uses: actions/checkout@v2\n - uses: gradle/wrapper-validation-action@v1\n" }, { "path": ".gitignore", "content": "*.iml\n.gradle\n.idea/\n/local.properties\n/.idea/workspace.xml\n/.idea/libraries\n!.idea/codeStyleSettings.xml\n.DS_Store\n/build\n/captures\n.vscode/\n\n# Taken from Android.gitignore https://github.com/github/gitignore/blob/master/Android.gitignore\n#\n# Built application files\n*.apk\n*.ap_\n\n# Files for the Dalvik VM\n*.dex\n\n# Java class files\n*.class\n\n# Generated files\nbin/\ngen/\nout/\n\n# Gradle files\n.gradle/\nbuild/\n\n# Local configuration file (sdk path, etc)\nlocal.properties\n\n# Proguard folder generated by Eclipse\nproguard/\n\n# Log Files\n*.log\n\n# Android Studio Navigation editor temp files\n.navigation/\n\n# Android Studio captures folder\ncaptures/\n\n# Intellij\n*.iml\n" }, { "path": "CONTRIBUTING.md", "content": "# How to become a contributor and submit your own code\n\n## Contributor License Agreements\n\nWe'd love to accept your sample apps and patches! Before we can take them, we\nhave to jump a couple of legal hurdles.\n\nPlease fill out either the individual or corporate Contributor License Agreement (CLA).\n\n * If you are an individual writing original source code and you're sure you\n own the intellectual property, then you'll need to sign an [individual CLA]\n (https://cla.developers.google.com).\n * If you work for a company that wants to allow you to contribute your work,\n then you'll need to sign a [corporate CLA]\n (https://cla.developers.google.com).\n\nFollow either of the two links above to access the appropriate CLA and\ninstructions for how to sign and return it. Once we receive it, we'll be able to\naccept your pull requests.\n\n## Contributing A Patch\n\n1. Submit an issue describing your proposed change to the repo in question.\n1. The repo owner will respond to your issue promptly.\n1. If your proposed change is accepted, and you haven't already done so, sign a\n Contributor License Agreement (see details above).\n1. Fork the desired repo, develop and test your code changes.\n1. Ensure that your code adheres to the existing style in the sample to which\n you are contributing. Refer to the\n [Android Code Style Guide]\n (https://source.android.com/source/code-style.html) for the\n recommended coding standards for this organization.\n1. Ensure that your code has an appropriate set of unit tests which all pass.\n1. Submit a pull request.\n\n## Code Style\n\nThis repository follows the official Android code style.\nWhen you send a patch, please try to follow that.\nHere are the example steps to follow:\n\n1. From Android Studio or IntelliJ IDEA, navigate to \"Preferences\" -> \"Editor\" -> \"Code Style\"\n1. Select \"Import Scheme\" by clicking the gear icon next to the Scheme pull down\n1. Choose /tool/codeStyleSettings.xml\n1. 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We also recommend that a\n file or class name and description of purpose be included on the\n same \"printed page\" as the copyright notice for easier\n identification within third-party archives.\n\n Copyright 2018 Google LLC\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n" }, { "path": "README.md", "content": "# FlexboxLayout\n[ ![Circle CI](https://circleci.com/gh/google/flexbox-layout.svg?style=shield&circle-token=2a42716dfffab73d73c5ce7ed7b3ee620cfa137b) ](https://circleci.com/gh/google/flexbox-layout/tree/main)\n\nFlexboxLayout is a library project which brings the similar capabilities of\n[CSS Flexible Box Layout Module](https://www.w3.org/TR/css-flexbox-1) to Android.\n\n# Installation\nAdd the following dependency to your `build.gradle` file:\n\n```\ndependencies {\n implementation 'com.google.android.flexbox:flexbox:3.0.0'\n}\n```\n\n**Starting from 3.0.0, the groupId is changed to `com.google.android.flexbox` in preparation to uploading the artifacts to google maven.\nYou can still download the artifacts from jcenter for the past versions with the prior groupId (`com.google.android`), but migrating the library 3.0.0 is recommended.**\n\nNote that the default values for `alignItems` and `alignContent` for `FlexboxLayout` have been changed from `stretch` to `flex_start` starting from 2.0.0, it may break the existing apps.\nPlease make sure to set `stretch` explicitly if you want to apply the behavior of `stretch`.\n\n\nNote that starting from 1.1.0, the library is expeced to use with AndroidX. Please migrate to [AndroidX](https://developer.android.com/jetpack/androidx/migrate) if you use 1.1.0 or above.\n\nPlease use 1.0.0 if you haven't migrated to AndroidX.\n\n\n# Usage\nThere are two ways of using Flexbox in your layout.\n\n## FlexboxLayout\nThe first one is `FlexboxLayout` that extends the `ViewGroup` like `LinearLayout` and `RelativeLayout`.\nYou can specify the attributes from a layout XML like:\n```xml\n\n\n \n\n \n\n \n\n```\n\nOr from code like:\n```java\nFlexboxLayout flexboxLayout = (FlexboxLayout) findViewById(R.id.flexbox_layout);\nflexboxLayout.setFlexDirection(FlexDirection.ROW);\n\nView view = flexboxLayout.getChildAt(0);\nFlexboxLayout.LayoutParams lp = (FlexboxLayout.LayoutParams) view.getLayoutParams();\nlp.setOrder(-1);\nlp.setFlexGrow(2);\nview.setLayoutParams(lp);\n```\n\n## FlexboxLayoutManager (within RecyclerView)\nThe second one is `FlexboxLayoutManager` that can be used within `RecyclerView`.\n\n```java\nRecyclerView recyclerView = (RecyclerView) context.findViewById(R.id.recyclerview);\nFlexboxLayoutManager layoutManager = new FlexboxLayoutManager(context);\nlayoutManager.setFlexDirection(FlexDirection.COLUMN);\nlayoutManager.setJustifyContent(JustifyContent.FLEX_END);\nrecyclerView.setLayoutManager(layoutManager);\n```\n\nor for the attributes for the children of the `FlexboxLayoutManager` you can do like:\n\n```java\nmImageView.setImageDrawable(drawable);\nViewGroup.LayoutParams lp = mImageView.getLayoutParams();\nif (lp instanceof FlexboxLayoutManager.LayoutParams) {\n FlexboxLayoutManager.LayoutParams flexboxLp = (FlexboxLayoutManager.LayoutParams) lp;\n flexboxLp.setFlexGrow(1.0f);\n flexboxLp.setAlignSelf(AlignSelf.FLEX_END);\n}\n```\n\nThe advantage of using `FlexboxLayoutManager` is that it recycles the views that go off the screen\nfor reuse for the views that are appearing as the user scrolls instead of inflating every individual view,\nwhich consumes much less memory especially when the number of items contained in the Flexbox container is large.\n\n![FlexboxLayoutManager in action](/assets/flexbox-layoutmanager.gif)\n\n\n## Supported attributes/features comparison\nDue to some characteristics of `RecyclerView`, some Flexbox attributes are not available/not implemented\nto the `FlexboxLayoutManager`.\nHere is a quick overview of the attributes/features comparison between the two implementations.\n\n|Attribute / Feature|FlexboxLayout| FlexboxLayoutManager (RecyclerView)|\n| ------- |:-----------:|:----------------------------------:|\n|flexDirection|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|flexWrap|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png) (except `wrap_reverse`)|\n|justifyContent|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|alignItems|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|alignContent|![Check](/assets/pngs/check_green_small.png)| - |\n|layout_order|![Check](/assets/pngs/check_green_small.png)| - |\n|layout_flexGrow|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|layout_flexShrink|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|layout_alignSelf|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|layout_flexBasisPercent|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|layout_(min/max)Width|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|layout_(min/max)Height|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|layout_wrapBefore|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|Divider|![Check](/assets/pngs/check_green_small.png)|![Check](/assets/pngs/check_green_small.png)|\n|View recycling| - |![Check](/assets/pngs/check_green_small.png)|\n|Scrolling| *1 |![Check](/assets/pngs/check_green_small.png)|\n\n*1 Partially possible by wrapping it with `ScrollView`. But it isn't likely to work with a large set\n of views inside the layout. Because it doesn't consider view recycling.\n\n# Supported attributes\n\n## Attributes for the FlexboxLayout:\n\n* __flexDirection__\n * This attribute determines the direction of the main axis (and the cross axis, perpendicular to the main axis). The direction children items are placed inside the Flexbox layout.\n Possible values are:\n * row (default)\n * row_reverse\n * column\n * column_reverse\n\n ![Flex Direction explanation](/assets/flex-direction.gif)\n\n* __flexWrap__\n * This attribute controls whether the flex container is single-line or multi-line, and the\n direction of the cross axis. Possible values are:\n * nowrap (default for FlexboxLayout)\n * wrap (default for FlexboxLayoutManager)\n * wrap_reverse (not supported by FlexboxLayoutManager)\n\n ![Flex Wrap explanation](/assets/flex-wrap.gif)\n\n* __justifyContent__\n * This attribute controls the alignment along the main axis. Possible values are:\n * flex_start (default)\n * flex_end\n * center\n * space_between\n * space_around\n * space_evenly\n\n ![Justify Content explanation](/assets/justify-content.gif)\n\n* __alignItems__\n * This attribute controls the alignment along the cross axis. Possible values are:\n * flex_start (default for FlexboxLayout)\n * flex_end\n * center\n * baseline\n * stretch (default for FlexboxLayoutManager)\n\n ![Align Items explanation](/assets/align-items.gif)\n\n* __alignContent__\n * This attribute controls the alignment of the flex lines in the flex container. Possible values\n are:\n * flex_start (default)\n * flex_end\n * center\n * space_between\n * space_around\n * stretch\n\n ![Align Content explanation](/assets/align-content.gif)\n\n* __showDividerHorizontal__ (one or more of `none | beginning | middle | end`)\n* __dividerDrawableHorizontal__ (reference to a drawable)\n * Puts horizontal dividers between flex lines (or flex items when flexDirection\n is set to `column` or `column_rebase`).\n \n* __showDividerVertical__ (one or more of `none | beginning | middle | end`)\n* __dividerDrawableVertical__ (reference to a drawable)\n * Puts vertical dividers between flex items (or flex lines when flexDirection\n is set to `column` or `column_rebase`).\n\n* __showDivider__ (one or more of `none | beginning | middle | end`)\n* __dividerDrawable__ (reference to a drawable)\n * Shorthand for setting both horizontal and vertical dividers. Note that if used with other attributes\n (such as `justifyContent=\"space_around\"` or `alignContent=\"space_between\"` ... etc) for putting \n spaces between flex lines or flex items, you may see unexpected spaces. Please avoid using these\n at the same time.\n \n Example of putting both vertical and horizontal dividers.\n \n `res/drawable/divider.xml`\n ```xml\n \n \n \n \n ```\n \n `res/layout/content_main.xml`\n ```xml\n \n\n \n \n \n \n \n ```\n \n ![Dividers beginning and middle](/assets/divider-beginning-middle.png)\n\n\n## Attributes for the children of a FlexboxLayout\n\n* __layout_order__ (integer)\n * This attribute can change how the ordering of the children views are laid out.\n By default, children are displayed and laid out in the same order as they appear in the\n layout XML. If not specified, `1` is set as a default value.\n\n ![Order explanation](/assets/layout_order.gif)\n\n* __layout_flexGrow__ (float)\n * This attribute determines how much this child will grow if positive free space is\n distributed relative to the rest of other flex items included in the same flex line.\n If a flex item has a positive `layout_flexGrow` value, the item will take up the remaining\n space in the flex line. If multiple flex items in the same flex line have positive `layout_flexGrow`\n values, the remaining free space is distributed depending on the proportion of their declared\n `layout_flexGrow` value. (Similar to the `layout_weight` attribute in the `LinearLayout`)\n If not specified, `0` is set as a default value.\n\n ![Flex Grow explanation](/assets/layout_flexGrow.gif)\n\n* __layout_flexShrink__ (float)\n * This attribute determines how much this child will shrink if negative free space is\n distributed relative to the rest of other flex items included in the same flex line.\n If not specified, `1` is set as a default value.\n\n ![Flex Shrink explanation](/assets/layout_flexShrink.gif)\n\n* __layout_alignSelf__\n * This attribute determines the alignment along the cross axis (perpendicular to the\n main axis). The alignment in the same direction can be determined by the\n `alignItems` in the parent, but if this is set to other than\n `auto`, the cross axis alignment is overridden for this child. Possible values are:\n * auto (default)\n * flex_start\n * flex_end\n * center\n * baseline\n * stretch\n\n ![Align Self explanation](/assets/layout_alignSelf.gif)\n\n* __layout_flexBasisPercent__ (fraction)\n * The initial flex item length in a fraction format relative to its parent.\n The initial main size of this child view is trying to be expanded as the specified\n fraction against the parent main size.\n If this value is set, the length specified from `layout_width`\n (or `layout_height`) is overridden by the calculated value from this attribute.\n This attribute is only effective when the parent's length is definite (MeasureSpec mode is\n `MeasureSpec.EXACTLY`). The default value is `-1`, which means not set.\n\n ![Flex basis percent explanation](/assets/layout_flexBasisPercent.gif)\n\n* __layout_minWidth__ / __layout_minHeight__ (dimension)\n * These attributes impose minimum size constraints for the children of FlexboxLayout.\n A child view won't shrink less than the value of these attributes (varies based on the\n `flexDirection` attribute as to which attribute imposes the size constraint along the\n main axis) regardless of the `layout_flexShrink` attribute.\n\n ![Min width explanation](/assets/layout_minWidth.gif)\n\n* __layout_maxWidth__ / __layout_maxHeight__ (dimension)\n * These attributes impose maximum size constraints for the children of FlexboxLayout.\n A child view won't be expanded more than the value of these attributes (varies based on the\n `flexDirection` attribute as to which attribute imposes the size constraint along the\n main axis) regardless of the `layout_flexGrow` attribute.\n\n ![Max width explanation](/assets/layout_maxWidth.gif)\n\n* __layout_wrapBefore__ (boolean)\n * This attribute forces a flex line wrapping, the default value is `false`.\n i.e. if this is set to `true` for a\n flex item, the item will become the first item of a flex line. (A wrapping happens\n regardless of the flex items being processed in the previous flex line)\n This attribute is ignored if the `flex_wrap` attribute is set to `nowrap`.\n The equivalent attribute isn't defined in the original CSS Flexible Box Module\n specification, but having this attribute is useful for Android developers. For example, to flatten\n the layouts when building a grid-like layout or for a situation where developers want\n to put a new flex line to make a semantic difference from the previous one, etc.\n\n ![Wrap before explanation](/assets/layout_wrapBefore.gif)\n\n# Others\n\n## Known differences from the original CSS specification\nThis library tries to achieve the same capabilities of the original\n[Flexible Box specification](https://www.w3.org/TR/css-flexbox-1) as much as possible,\nbut due to some reasons such as the way specifying attributes can't be the same between\nCSS and Android XML, there are some known differences from the original specification.\n\n(1) There is no [flex-flow](https://www.w3.org/TR/css-flexbox-1/#flex-flow-property)\nequivalent attribute\n * Because `flex-flow` is a shorthand for setting the `flex-direction` and `flex-wrap` properties,\n specifying two attributes from a single attribute is not practical in Android.\n\n(2) There is no [flex](https://www.w3.org/TR/css-flexbox-1/#flex-property) equivalent attribute\n * Likewise `flex` is a shorthand for setting the `flex-grow`, `flex-shrink` and `flex-basis`,\n specifying those attributes from a single attribute is not practical.\n\n(3) `layout_flexBasisPercent` is introduced instead of\n [flexBasis](https://www.w3.org/TR/css-flexbox-1/#flex-basis-property)\n * Both `layout_flexBasisPercent` in this library and `flex-basis` property in the CSS are used to\n determine the initial length of an individual flex item. The `flex-basis` property accepts width\n values such as `1em`, `10px`, and `content` as strings as well as percentage values such as\n `10%` and `30%`. `layout_flexBasisPercent` only accepts percentage values.\n However, specifying initial fixed width values can be done by specifying width (or height) values in\n layout_width (or layout_height, varies depending on the `flexDirection`). Also, the same\n effect can be done by specifying \"wrap_content\" in layout_width (or layout_height) if\n developers want to achieve the same effect as 'content'. Thus, `layout_flexBasisPercent` only\n accepts percentage values, which can't be done through layout_width (or layout_height) for\n simplicity.\n\n(4) `layout_wrapBefore` is introduced.\n * The equivalent attribute doesn't exist in the CSS Flexible Box Module specification,\n but as explained above, Android developers will benefit by having this attribute for having\n more control over when a wrapping happens.\n\n(5) Default values for `alignItems` and `alignContent` are set to `flex_start` instead of `stretch`.\n * Setting `stretch` for the `alignItems` is expensive because the children of `FlexboxLayout` are measured more than twice. The difference is more obvious when the layout hierarchy is deeply nested.\n\n## Xamarin Binding\nXamarin binding is now available on [NuGet](https://www.nuget.org/packages/FlexboxLayoutXamarinBindingAndroid/) thanks to [@btripp](https://github.com/btripp)\n\n## Demo apps\n### Flexbox Playground demo app\nThe `demo-playground` module works as a playground demo app for trying various values for the supported attributes.\nYou can install it by\n```\n./gradlew demo-playground:installDebug\n```\n\n### Cat gallery demo app\nThe `demo-cat-gallery` module showcases the usage of the FlexboxLayoutManager inside the RecyclerView\nthat handles various sizes of views aligned nicely regardless of the device width like the\nGoogle Photo app without loading all the images on the memory.\nThus compared to using the {@link FlexboxLayout}, it's much less likely to abuse the memory,\nwhich sometimes leads to the OutOfMemoryError.\n```\n./gradlew demo-cat-gallery:installDebug\n```\n\n## How to make contributions\nPlease read and follow the steps in [CONTRIBUTING.md](/CONTRIBUTING.md)\n\n## License\nPlease see [LICENSE](/LICENSE)\n" }, { "path": "build.gradle", "content": "/*\n * Copyright 2016 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n// Top-level build file where you can add configuration options common to all sub-projects/modules.\n\nbuildscript {\n ext {\n minSdkVersion = 14\n targetSdkVersion = 30\n compileSdkVersion = 30\n\n androidGradlePluginVersion = \"4.2.0\"\n androidxAnnotationVersion = \"1.2.0\"\n androidxAppCompatVersion = \"1.2.0\"\n androidxCoreVersion = \"1.3.2\"\n androidxPreferenceVersion = \"1.1.1\"\n androidxRecyclerViewVersion = \"1.2.0\"\n androidxEspressoVersion = \"3.3.0\"\n androidxTestExtVersion = \"1.1.2\"\n androidxTestVersion = \"1.3.0\"\n junitVersion = \"4.13.2\"\n kotlinVersion = \"1.4.32\"\n materialVersion = \"1.3.0\"\n }\n\n repositories {\n jcenter()\n google()\n }\n dependencies {\n classpath \"com.android.tools.build:gradle:$androidGradlePluginVersion\"\n classpath \"org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion\"\n // NOTE: Do not place your application dependencies here; they belong\n // in the individual module build.gradle files\n }\n}\n\nallprojects {\n repositories {\n jcenter()\n google()\n }\n}\n\ntask clean(type: Delete) {\n delete rootProject.buildDir\n}\n\n// This allows to disable pre dexing. If not disabled, it makes each CI build slow\n// See https://circleci.com/docs/android/#disable-pre-dexing-to-improve-build-performance\n// http://tools.android.com/tech-docs/new-build-system/tips#TOC-Improving-Build-Server-performance\nproject.ext.preDexLibs = !project.hasProperty('disablePreDex')\n\nsubprojects {\n project.plugins.whenPluginAdded { plugin ->\n if (\"com.android.build.gradle.AppPlugin\" == plugin.class.name) {\n project.android.dexOptions.preDexLibraries = rootProject.ext.preDexLibs\n } else if (\"com.android.build.gradle.LibraryPlugin\" == plugin.class.name) {\n project.android.dexOptions.preDexLibraries = rootProject.ext.preDexLibs\n }\n }\n}\n" }, { "path": "demo-cat-gallery/build.gradle", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\napply plugin: 'com.android.application'\napply plugin: 'kotlin-android'\n\nandroid {\n compileSdkVersion rootProject.ext.compileSdkVersion\n\n defaultConfig {\n applicationId \"com.google.android.flexbox.apps.catgallery\"\n minSdkVersion rootProject.ext.minSdkVersion\n targetSdkVersion rootProject.ext.targetSdkVersion\n versionCode 1\n versionName \"1.0\"\n\n testInstrumentationRunner \"androidx.test.runner.AndroidJUnitRunner\"\n }\n buildTypes {\n release {\n shrinkResources true\n minifyEnabled true\n proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'\n }\n }\n}\n\ndependencies {\n implementation project(path: \":flexbox\")\n implementation \"androidx.appcompat:appcompat:${rootProject.androidxAppCompatVersion}\"\n implementation \"androidx.recyclerview:recyclerview:${rootProject.androidxRecyclerViewVersion}\"\n implementation \"com.google.android.material:material:${rootProject.materialVersion}\"\n implementation \"org.jetbrains.kotlin:kotlin-stdlib:${rootProject.kotlinVersion}\"\n}\n" }, { "path": "demo-cat-gallery/proguard-rules.pro", "content": "# Add project specific ProGuard rules here.\n# By default, the flags in this file are appended to flags specified\n# in /usr/local/google/home/thagikura/android-sdk/tools/proguard/proguard-android.txt\n# You can edit the include path and order by changing the proguardFiles\n# directive in build.gradle.\n#\n# For more details, see\n# http://developer.android.com/guide/developing/tools/proguard.html\n\n# Add any project specific keep options here:\n\n# If your project uses WebView with JS, uncomment the following\n# and specify the fully qualified class name to the JavaScript interface\n# class:\n#-keepclassmembers class fqcn.of.javascript.interface.for.webview {\n# public *;\n#}\n" }, { "path": "demo-cat-gallery/src/main/AndroidManifest.xml", "content": "\n\n\n \n \n \n \n\n \n \n \n \n\n" }, { "path": "demo-cat-gallery/src/main/java/com/google/android/flexbox/apps/catgallery/CatAdapter.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox.apps.catgallery\n\nimport android.view.LayoutInflater\nimport android.view.ViewGroup\nimport androidx.recyclerview.widget.RecyclerView\n\n/**\n * Adapter class that handles the data set with the {@link RecyclerView.LayoutManager}\n */\ninternal class CatAdapter : RecyclerView.Adapter() {\n\n companion object {\n private val CAT_IMAGE_IDS = intArrayOf(\n R.drawable.cat_1,\n R.drawable.cat_2,\n R.drawable.cat_3,\n R.drawable.cat_4,\n R.drawable.cat_5,\n R.drawable.cat_6,\n R.drawable.cat_7,\n R.drawable.cat_8,\n R.drawable.cat_9,\n R.drawable.cat_10,\n R.drawable.cat_11,\n R.drawable.cat_12,\n R.drawable.cat_13,\n R.drawable.cat_14,\n R.drawable.cat_15,\n R.drawable.cat_16,\n R.drawable.cat_17,\n R.drawable.cat_18,\n R.drawable.cat_19\n )\n }\n\n override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CatViewHolder {\n val view = LayoutInflater.from(parent.context)\n .inflate(R.layout.viewholder_cat, parent, false)\n return CatViewHolder(view)\n }\n\n override fun onBindViewHolder(holder: CatViewHolder, position: Int) {\n val pos = position % CAT_IMAGE_IDS.size\n holder.bindTo(CAT_IMAGE_IDS[pos])\n }\n\n override fun getItemCount() = CAT_IMAGE_IDS.size * 4\n}\n" }, { "path": "demo-cat-gallery/src/main/java/com/google/android/flexbox/apps/catgallery/CatViewHolder.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox.apps.catgallery\n\nimport android.view.View\nimport android.widget.ImageView\nimport androidx.annotation.DrawableRes\nimport androidx.recyclerview.widget.RecyclerView\nimport com.google.android.flexbox.FlexboxLayoutManager\n\n/**\n * ViewHolder that represents a cat image.\n */\ninternal class CatViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {\n\n private val imageView: ImageView = itemView.findViewById(R.id.imageview)\n\n internal fun bindTo(@DrawableRes drawableRes: Int) {\n imageView.setImageResource(drawableRes)\n val lp = imageView.layoutParams\n if (lp is FlexboxLayoutManager.LayoutParams) {\n lp.flexGrow = 1f\n }\n }\n}\n" }, { "path": "demo-cat-gallery/src/main/java/com/google/android/flexbox/apps/catgallery/MainActivity.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox.apps.catgallery\n\nimport android.os.Bundle\nimport androidx.appcompat.app.AppCompatActivity\nimport androidx.appcompat.widget.Toolbar\nimport androidx.recyclerview.widget.RecyclerView\nimport com.google.android.flexbox.AlignItems\nimport com.google.android.flexbox.FlexDirection\nimport com.google.android.flexbox.FlexWrap\nimport com.google.android.flexbox.FlexboxLayoutManager\n\n/**\n * Launcher Activity for the cat gallery demo app that demonstrates the usage of the\n * {@link FlexboxLayoutManager} that handles various sizes of views aligned nicely regardless of\n * the device width like the Google Photo app without loading all the images on the memory.\n * Thus compared to using the {@link FlexboxLayout}, it's much less likely to abuse the memory,\n * which some times leads to the OutOfMemoryError.\n */\nclass MainActivity : AppCompatActivity() {\n\n override fun onCreate(savedInstanceState: Bundle?) {\n super.onCreate(savedInstanceState)\n setContentView(R.layout.activity_main)\n\n val toolbar: Toolbar = findViewById(R.id.toolbar)\n setSupportActionBar(toolbar)\n\n val flexboxLayoutManager = FlexboxLayoutManager(this).apply {\n flexWrap = FlexWrap.WRAP\n flexDirection = FlexDirection.ROW\n alignItems = AlignItems.STRETCH\n }\n\n val recyclerView: RecyclerView = findViewById(R.id.recyclerview)\n recyclerView.apply {\n layoutManager = flexboxLayoutManager\n adapter = CatAdapter()\n }\n }\n}\n" }, { "path": "demo-cat-gallery/src/main/res/layout/activity_main.xml", "content": "\n\n\n \n\n \n\n \n\n \n \n\n \n\n\n" }, { "path": "demo-cat-gallery/src/main/res/layout/content_main.xml", "content": "\n\n" }, { "path": "demo-cat-gallery/src/main/res/layout/viewholder_cat.xml", "content": "\n\n" }, { "path": "demo-cat-gallery/src/main/res/values/colors.xml", "content": "\n\n #3F51B5\n #303F9F\n #FF4081\n\n" }, { "path": "demo-cat-gallery/src/main/res/values/dimens.xml", "content": "\n\n 180dp\n\n" }, { "path": "demo-cat-gallery/src/main/res/values/strings.xml", "content": "\n\n Cat Gallery\n Cat image\n\n" }, { "path": "demo-cat-gallery/src/main/res/values/styles.xml", "content": "\n\n\n \n \n \n \n\n" }, { "path": "demo-playground/build.gradle", "content": "/*\n * Copyright 2016 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\napply plugin: 'com.android.application'\napply plugin: 'kotlin-android'\n\nandroid {\n compileSdkVersion rootProject.ext.compileSdkVersion\n\n defaultConfig {\n applicationId \"com.google.android.apps.flexbox\"\n minSdkVersion rootProject.ext.minSdkVersion\n targetSdkVersion rootProject.ext.targetSdkVersion\n versionCode 1\n versionName \"1.0\"\n\n testInstrumentationRunner \"androidx.test.runner.AndroidJUnitRunner\"\n }\n buildTypes {\n release {\n shrinkResources true\n minifyEnabled true\n proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'\n }\n }\n}\n\ndependencies {\n implementation project(\":flexbox\")\n implementation \"androidx.annotation:annotation:${rootProject.androidxAnnotationVersion}\"\n implementation \"androidx.appcompat:appcompat:${rootProject.androidxAppCompatVersion}\"\n implementation \"androidx.preference:preference:${rootProject.androidxPreferenceVersion}\"\n implementation \"com.google.android.material:material:${rootProject.materialVersion}\"\n implementation \"org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion\"\n\n testImplementation \"junit:junit:${rootProject.ext.junitVersion}\"\n\n androidTestImplementation \"androidx.annotation:annotation:${rootProject.androidxAnnotationVersion}\"\n androidTestImplementation \"androidx.test:runner:${rootProject.androidxTestVersion}\"\n androidTestImplementation \"androidx.test:rules:${rootProject.androidxTestVersion}\"\n androidTestImplementation \"androidx.test.espresso:espresso-core:${rootProject.androidxEspressoVersion}\"\n}\n" }, { "path": "demo-playground/proguard-rules.pro", "content": "#\n# Copyright 2016 Google Inc. All rights reserved.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n# http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n#\n\n# Add project specific ProGuard rules here.\n# By default, the flags in this file are appended to flags specified\n# in ${sdk.dir}/tools/proguard/proguard-android.txt\n# You can edit the include path and order by changing the proguardFiles\n# directive in build.gradle.\n#\n# For more details, see\n# http://developer.android.com/guide/developing/tools/proguard.html\n\n# Add any project specific keep options here:\n\n# If your project uses WebView with JS, uncomment the following\n# and specify the fully qualified class name to the JavaScript interface\n# class:\n#-keepclassmembers class fqcn.of.javascript.interface.for.webview {\n# public *;\n#}\n" }, { "path": "demo-playground/src/androidTest/java/com/google/android/apps/flexbox/test/MainActivityTest.kt", "content": "/*\n * Copyright 2016 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.apps.flexbox.test\n\nimport android.content.pm.ActivityInfo\nimport android.view.View\nimport android.widget.ArrayAdapter\nimport android.widget.RadioGroup\nimport android.widget.Spinner\nimport android.widget.TextView\nimport androidx.test.InstrumentationRegistry\nimport androidx.test.espresso.Espresso.onView\nimport androidx.test.espresso.action.ViewActions.*\nimport androidx.test.espresso.matcher.ViewMatchers.withId\nimport androidx.test.filters.FlakyTest\nimport androidx.test.filters.MediumTest\nimport androidx.test.rule.ActivityTestRule\nimport androidx.test.runner.AndroidJUnit4\nimport com.google.android.apps.flexbox.R\nimport com.google.android.flexbox.*\nimport com.google.android.material.navigation.NavigationView\nimport org.hamcrest.MatcherAssert.assertThat\nimport org.hamcrest.core.Is.`is`\nimport org.junit.Assert.*\nimport org.junit.Rule\nimport org.junit.Test\nimport org.junit.runner.RunWith\n\n/**\n * Integration tests for [MainActivity].\n */\n@RunWith(AndroidJUnit4::class)\n@MediumTest\nclass MainActivityTest {\n\n @JvmField\n @Rule\n var activityRule = ActivityTestRule(MainActivity::class.java)\n\n @Test\n @FlakyTest\n fun testAddFlexItem() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n val beforeCount = flexboxLayout.childCount\n onView(withId(R.id.add_fab)).perform(click())\n\n assertThat(flexboxLayout.childCount, `is`(beforeCount + 1))\n }\n\n @Test\n @FlakyTest\n fun testRemoveFlexItem() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n val beforeCount = flexboxLayout.childCount\n onView(withId(R.id.remove_fab)).perform(click())\n\n assertThat(flexboxLayout.childCount, `is`(beforeCount - 1))\n }\n\n @Test\n @FlakyTest\n fun testConfigurationChange() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n onView(withId(R.id.add_fab)).perform(click())\n onView(withId(R.id.add_fab)).perform(click())\n onView(withId(R.id.add_fab)).perform(click())\n val beforeCount = flexboxLayout.childCount\n\n activity.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n\n // Verify the flex items are restored across the configuration change.\n assertThat(flexboxLayout.childCount, `is`(beforeCount))\n }\n\n @Test\n @FlakyTest\n fun testFlexDirectionSpinner() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n val navigationView = activity.findViewById(R.id.nav_view)\n assertNotNull(navigationView)\n val menu = navigationView.menu\n val spinner = menu.findItem(R.id.menu_item_flex_direction).actionView as Spinner\n val spinnerAdapter = spinner.adapter as ArrayAdapter\n\n val columnPosition = spinnerAdapter.getPosition(activity.getString(R.string.column))\n activity.runOnUiThread { spinner.setSelection(columnPosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.flexDirection, `is`(FlexDirection.COLUMN))\n\n val rowReversePosition = spinnerAdapter.getPosition(activity.getString(R.string.row_reverse))\n activity.runOnUiThread { spinner.setSelection(rowReversePosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.flexDirection, `is`(FlexDirection.ROW_REVERSE))\n }\n\n @Test\n @FlakyTest\n fun testFlexWrapSpinner() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n val navigationView = activity.findViewById(R.id.nav_view)\n assertNotNull(navigationView)\n val menu = navigationView.menu\n val spinner = menu.findItem(R.id.menu_item_flex_wrap).actionView as Spinner\n val spinnerAdapter = spinner.adapter as ArrayAdapter\n\n val wrapReversePosition = spinnerAdapter.getPosition(activity.getString(R.string.wrap_reverse))\n activity.runOnUiThread { spinner.setSelection(wrapReversePosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.flexWrap, `is`(FlexWrap.WRAP_REVERSE))\n\n val noWrapPosition = spinnerAdapter.getPosition(activity.getString(R.string.nowrap))\n activity.runOnUiThread { spinner.setSelection(noWrapPosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.flexWrap, `is`(FlexWrap.NOWRAP))\n }\n\n @Test\n @FlakyTest\n fun testJustifyContentSpinner() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout) as FlexboxLayout\n assertNotNull(flexboxLayout)\n val navigationView = activity.findViewById(R.id.nav_view) as NavigationView\n assertNotNull(navigationView)\n val menu = navigationView.menu\n val spinner = menu.findItem(R.id.menu_item_justify_content).actionView as Spinner\n val spinnerAdapter = spinner.adapter as ArrayAdapter\n\n val spaceBetweenPosition = spinnerAdapter.getPosition(activity.getString(R.string.space_between))\n activity.runOnUiThread { spinner.setSelection(spaceBetweenPosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.justifyContent, `is`(JustifyContent.SPACE_BETWEEN))\n\n val centerPosition = spinnerAdapter.getPosition(activity.getString(R.string.center))\n activity.runOnUiThread { spinner.setSelection(centerPosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.justifyContent, `is`(JustifyContent.CENTER))\n }\n\n @Test\n @FlakyTest\n fun testAlignItemsSpinner() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n val navigationView = activity.findViewById(R.id.nav_view)\n assertNotNull(navigationView)\n val menu = navigationView.menu\n val spinner = menu.findItem(R.id.menu_item_align_items).actionView as Spinner\n val spinnerAdapter = spinner.adapter as ArrayAdapter\n\n val baselinePosition = spinnerAdapter.getPosition(activity.getString(R.string.baseline))\n activity.runOnUiThread { spinner.setSelection(baselinePosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.alignItems, `is`(AlignItems.BASELINE))\n\n val flexEndPosition = spinnerAdapter.getPosition(activity.getString(R.string.flex_end))\n activity.runOnUiThread { spinner.setSelection(flexEndPosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.alignItems, `is`(AlignItems.FLEX_END))\n }\n\n @Test\n @FlakyTest\n fun testAlignContentSpinner() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n val navigationView = activity.findViewById(R.id.nav_view)\n assertNotNull(navigationView)\n val menu = navigationView.menu\n val spinner = menu.findItem(R.id.menu_item_align_content).actionView as Spinner\n val spinnerAdapter = spinner.adapter as ArrayAdapter\n\n val spaceAroundPosition = spinnerAdapter.getPosition(activity.getString(R.string.space_around))\n activity.runOnUiThread { spinner.setSelection(spaceAroundPosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.alignContent, `is`(AlignContent.SPACE_AROUND))\n\n val stretchPosition = spinnerAdapter.getPosition(activity.getString(R.string.stretch))\n activity.runOnUiThread { spinner.setSelection(stretchPosition) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertThat(flexboxLayout.alignContent, `is`(AlignContent.STRETCH))\n }\n\n @Test\n @FlakyTest\n fun testEditFragment_changeOrder() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout) as FlexboxLayout\n assertNotNull(flexboxLayout)\n onView(withId(R.id.textview1)).perform(click())\n onView(withId(R.id.edit_text_order)).perform(replaceText(\"3\"), closeSoftKeyboard())\n onView(withId(R.id.button_ok)).perform(click())\n val first = flexboxLayout.getReorderedChildAt(0) as TextView\n val second = flexboxLayout.getReorderedChildAt(1) as TextView\n val third = flexboxLayout.getReorderedChildAt(2) as TextView\n\n assertThat(first.text.toString(), `is`(\"2\"))\n assertThat(second.text.toString(), `is`(\"3\"))\n assertThat(third.text.toString(), `is`(\"1\"))\n }\n\n @Test\n @FlakyTest\n fun testEditFragment_changeFlexGrow() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout) as FlexboxLayout\n assertNotNull(flexboxLayout)\n onView(withId(R.id.textview1)).perform(click())\n onView(withId(R.id.edit_text_flex_grow)).perform(replaceText(\"1\"), closeSoftKeyboard())\n onView(withId(R.id.button_ok)).perform(click())\n val first = activity.findViewById(R.id.textview1) as TextView\n val second = activity.findViewById(R.id.textview2) as TextView\n val third = activity.findViewById(R.id.textview3) as TextView\n assertNotNull(first)\n assertNotNull(second)\n assertNotNull(third)\n\n assertThat(first.width, `is`(flexboxLayout.width - second.width - third.width))\n }\n\n @Test\n @FlakyTest\n fun testEditFragment_changeFlexGrowFloat() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout) as FlexboxLayout\n assertNotNull(flexboxLayout)\n onView(withId(R.id.textview1)).perform(click())\n onView(withId(R.id.edit_text_flex_grow)).perform(replaceText(\"1.0\"), closeSoftKeyboard())\n onView(withId(R.id.button_ok)).perform(click())\n val first = activity.findViewById(R.id.textview1) as TextView\n val second = activity.findViewById(R.id.textview2) as TextView\n val third = activity.findViewById(R.id.textview3) as TextView\n assertNotNull(first)\n assertNotNull(second)\n assertNotNull(third)\n\n assertThat(first.width, `is`(flexboxLayout.width - second.width - third.width))\n }\n\n @Test\n @FlakyTest\n fun testEditFragment_changeFlexBasisPercent() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout) as FlexboxLayout\n assertNotNull(flexboxLayout)\n onView(withId(R.id.textview1)).perform(click())\n onView(withId(R.id.edit_text_flex_basis_percent))\n .perform(replaceText(\"50\"), closeSoftKeyboard())\n onView(withId(R.id.button_ok)).perform(click())\n val first = activity.findViewById(R.id.textview1)\n val second = activity.findViewById(R.id.textview2)\n val third = activity.findViewById(R.id.textview3)\n assertNotNull(first)\n assertNotNull(second)\n assertNotNull(third)\n\n assertTrue(first.width - 1 <= flexboxLayout.width / 2 || flexboxLayout.width / 2 <= first.width + 1)\n }\n\n @Test\n @FlakyTest\n fun testSwitchRecyclerViewFragment() {\n val activity = activityRule.activity\n val flexboxLayout = activity.findViewById(R.id.flexbox_layout)\n assertNotNull(flexboxLayout)\n val navigationView = activity.findViewById(R.id.nav_view)\n assertNotNull(navigationView)\n assertNull(activity.findViewById(R.id.recyclerview))\n assertNotNull(activity.findViewById(R.id.flexbox_layout))\n\n val radioGroup = navigationView.getHeaderView(0)\n .findViewById(R.id.radiogroup_container_implementation)\n activity.runOnUiThread { radioGroup.check(R.id.radiobutton_recyclerview) }\n InstrumentationRegistry.getInstrumentation().waitForIdleSync()\n assertNotNull(activity.findViewById(R.id.recyclerview))\n assertNull(activity.findViewById(R.id.flexbox_layout))\n }\n}\n" }, { "path": "demo-playground/src/main/AndroidManifest.xml", "content": "\n\n\n \n\n \n \n \n \n\n \n \n \n\n \n \n\n\n" }, { "path": "demo-playground/src/main/java/com/google/android/flexbox/Extensions.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox\n\nimport android.content.Context\n\n/**\n * Convert pixel to dp. Preserve the negative value as it's used for representing\n * MATCH_PARENT(-1) and WRAP_CONTENT(-2).\n * Ignore the round error that might happen in dividing the pixel by the density.\n *\n * @param pixel the value in pixel\n *\n * @return the converted value in dp\n */\nfun Context.pixelToDp(pixel: Int): Int {\n val displayMetrics = this.resources.displayMetrics\n return if (pixel < 0) pixel else Math.round(pixel / displayMetrics.density)\n}\n\n/**\n * Convert dp to pixel. Preserve the negative value as it's used for representing\n * MATCH_PARENT(-1) and WRAP_CONTENT(-2).\n *\n * @param dp the value in dp\n *\n * @return the converted value in pixel\n */\nfun Context.dpToPixel(dp: Int): Int {\n val displayMetrics = this.resources.displayMetrics\n return if (dp < 0) dp else Math.round(dp * displayMetrics.density)\n}\n" }, { "path": "demo-playground/src/main/java/com/google/android/flexbox/FlexItemAdapter.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox\n\nimport android.view.LayoutInflater\nimport android.view.ViewGroup\nimport androidx.appcompat.app.AppCompatActivity\nimport androidx.recyclerview.widget.RecyclerView\nimport com.google.android.apps.flexbox.R\n\n/**\n * [RecyclerView.Adapter] implementation for [FlexItemViewHolder].\n */\ninternal class FlexItemAdapter(private val activity: AppCompatActivity,\n private val flexContainer: FlexContainer)\n : RecyclerView.Adapter() {\n\n private val layoutParams = mutableListOf()\n\n override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FlexItemViewHolder {\n val view = LayoutInflater.from(parent.context)\n .inflate(R.layout.viewholder_flex_item, parent, false)\n\n return FlexItemViewHolder(view)\n }\n\n override fun onBindViewHolder(holder: FlexItemViewHolder, position: Int) {\n val adapterPosition = holder.adapterPosition\n // TODO: More optimized set the click listener inside the view holder\n holder.itemView.setOnClickListener(FlexItemClickListener(activity,\n FlexItemChangedListenerImplRecyclerView(flexContainer, this),\n adapterPosition))\n holder.bindTo(layoutParams[position])\n }\n\n fun addItem(lp: FlexboxLayoutManager.LayoutParams) {\n layoutParams.add(lp)\n notifyItemInserted(layoutParams.size - 1)\n }\n\n fun removeItem(position: Int) {\n if (position < 0 || position >= layoutParams.size) {\n return\n }\n layoutParams.removeAt(position)\n notifyItemRemoved(layoutParams.size)\n notifyItemRangeChanged(position, layoutParams.size)\n }\n\n val items get() = layoutParams\n\n override fun getItemCount() = layoutParams.size\n}\n" }, { "path": "demo-playground/src/main/java/com/google/android/flexbox/FlexItemChangedListener.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox\n\n/**\n * A listener that listens to the change of a flex item\n */\ninternal interface FlexItemChangedListener {\n\n fun onFlexItemChanged(flexItem: FlexItem, viewIndex: Int)\n}\n" }, { "path": "demo-playground/src/main/java/com/google/android/flexbox/FlexItemChangedListenerImpl.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox\n\nimport android.view.ViewGroup\n\n/**\n * Default implementation for the [FlexItemChangedListener].\n */\ninternal class FlexItemChangedListenerImpl(private val flexContainer: FlexContainer) : FlexItemChangedListener {\n\n override fun onFlexItemChanged(flexItem: FlexItem, viewIndex: Int) {\n val view = flexContainer.getFlexItemAt(viewIndex)\n view.layoutParams = flexItem as ViewGroup.LayoutParams\n }\n}\n" }, { "path": "demo-playground/src/main/java/com/google/android/flexbox/FlexItemChangedListenerImplRecyclerView.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox\n\nimport android.view.ViewGroup\nimport androidx.recyclerview.widget.RecyclerView\n\n/**\n * Implementation for the [FlexItemChangedListener].\n * It expects RecyclerView as the underlying flex container implementation.\n */\ninternal class FlexItemChangedListenerImplRecyclerView(private val flexContainer: FlexContainer,\n private val adapter: RecyclerView.Adapter<*>) : FlexItemChangedListener {\n\n override fun onFlexItemChanged(flexItem: FlexItem, viewIndex: Int) {\n val view = flexContainer.getFlexItemAt(viewIndex)\n view.layoutParams = flexItem as ViewGroup.LayoutParams\n adapter.notifyDataSetChanged()\n // TODO: An Exception is thrown if notifyItemChanged(int) is used.\n // Investigate that, but using LinearLayoutManager also produces the same Exception\n // java.lang.IllegalArgumentException: Called attach on a child which is not detached:\n }\n}\n" }, { "path": "demo-playground/src/main/java/com/google/android/flexbox/FlexItemClickListener.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox\n\nimport android.view.View\nimport androidx.appcompat.app.AppCompatActivity\n\n/**\n * Implementation of the [android.view.View.OnClickListener] when a flex item is clicked in\n * the Flexbox Playground demo app.\n */\ninternal class FlexItemClickListener(private val activity: AppCompatActivity, private val flexItemChangedListener: FlexItemChangedListener,\n private val viewIndex: Int) : View.OnClickListener {\n\n override fun onClick(v: View) =\n FlexItemEditFragment.newInstance(v.layoutParams as FlexItem, viewIndex).apply {\n setFlexItemChangedListener(flexItemChangedListener)\n }.show(activity.supportFragmentManager, EDIT_DIALOG_TAG)\n\n companion object {\n\n private const val EDIT_DIALOG_TAG = \"edit_dialog_tag\"\n }\n}\n" }, { "path": "demo-playground/src/main/java/com/google/android/flexbox/FlexItemEditFragment.kt", "content": "/*\n * Copyright 2017 Google Inc. All rights reserved.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.google.android.flexbox\n\nimport android.content.Context\nimport android.os.Build\nimport android.os.Bundle\nimport android.text.Editable\nimport android.text.TextWatcher\nimport android.view.KeyEvent\nimport android.view.LayoutInflater\nimport android.view.View\nimport android.view.ViewGroup\nimport android.view.inputmethod.EditorInfo\nimport android.view.inputmethod.InputMethodManager\nimport android.widget.*\nimport androidx.fragment.app.DialogFragment\nimport com.google.android.apps.flexbox.R\nimport com.google.android.flexbox.validators.*\nimport com.google.android.material.textfield.TextInputLayout\n\n/**\n * DialogFragment that changes the properties for a flex item.\n */\ninternal class FlexItemEditFragment : DialogFragment() {\n\n private lateinit var alignSelfAuto: String\n\n private lateinit var alignSelfFlexStart: String\n\n private lateinit var alignSelfFlexEnd: String\n\n private lateinit var alignSelfCenter: String\n\n private lateinit var alignSelfBaseline: String\n\n private lateinit var alignSelfStretch: String\n\n private var viewIndex: Int = 0\n\n private lateinit var flexItem: FlexItem\n\n /**\n * Instance of a [FlexItem] being edited. At first it's created as another instance from\n * the [flexItem] because otherwise changes before clicking the ok button will be\n * reflected if the [flexItem] is changed directly.\n */\n private lateinit var flexItemInEdit: FlexItem\n\n private var flexItemChangedListener: FlexItemChangedListener? = null\n\n override fun onCreate(savedInstanceState: Bundle?) {\n super.onCreate(savedInstanceState)\n if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {\n setStyle(STYLE_NORMAL, android.R.style.Theme_Material_Light_Dialog)\n } else {\n setStyle(STYLE_NORMAL, android.R.style.Theme_Dialog)\n }\n arguments?.let {\n flexItem = it.getParcelable(FLEX_ITEM_KEY)!!\n viewIndex = it.getInt(VIEW_INDEX_KEY)\n }\n flexItemInEdit = createNewFlexItem(flexItem)\n\n activity?.let {\n alignSelfAuto = it.getString(R.string.auto)\n alignSelfFlexStart = it.getString(R.string.flex_start)\n alignSelfFlexEnd = it.getString(R.string.flex_end)\n alignSelfCenter = it.getString(R.string.center)\n alignSelfBaseline = it.getString(R.string.baseline)\n alignSelfStretch = it.getString(R.string.stretch)\n }\n }\n\n override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,\n savedInstanceState: Bundle?): View? {\n val view = inflater.inflate(R.layout.fragment_flex_item_edit, container, false)\n dialog?.setTitle((viewIndex + 1).toString())\n\n val context = activity ?: return view\n val orderTextInput: TextInputLayout = view.findViewById(R.id.input_layout_order)\n val orderEdit: EditText = view.findViewById(R.id.edit_text_order)\n orderEdit.setText(flexItem.order.toString())\n orderEdit.addTextChangedListener(\n FlexEditTextWatcher(context, orderTextInput, IntegerInputValidator(),\n R.string.must_be_integer))\n if (flexItem is FlexboxLayoutManager.LayoutParams) {\n // Order is not enabled in FlexboxLayoutManager\n orderEdit.isEnabled = false\n }\n\n val flexGrowInput: TextInputLayout = view .findViewById(R.id.input_layout_flex_grow)\n val flexGrowEdit: EditText = view.findViewById(R.id.edit_text_flex_grow)\n flexGrowEdit.setText(flexItem.flexGrow.toString())\n flexGrowEdit.addTextChangedListener(\n FlexEditTextWatcher(context, flexGrowInput, NonNegativeDecimalInputValidator(),\n R.string.must_be_non_negative_float))\n\n val flexShrinkInput: TextInputLayout = view.findViewById(R.id.input_layout_flex_shrink)\n val flexShrinkEdit: EditText = view.findViewById(R.id.edit_text_flex_shrink)\n flexShrinkEdit.setText(flexItem.flexShrink.toString())\n flexShrinkEdit.addTextChangedListener(\n FlexEditTextWatcher(context, flexShrinkInput, NonNegativeDecimalInputValidator(),\n R.string.must_be_non_negative_float))\n\n val flexBasisPercentInput: TextInputLayout =\n view.findViewById(R.id.input_layout_flex_basis_percent)\n val flexBasisPercentEdit: EditText = view.findViewById(R.id.edit_text_flex_basis_percent)\n if (flexItem.flexBasisPercent != FlexboxLayout.LayoutParams.FLEX_BASIS_PERCENT_DEFAULT) {\n flexBasisPercentEdit\n .setText(Math.round(flexItem.flexBasisPercent * 100).toString())\n } else {\n flexBasisPercentEdit.setText(flexItem.flexBasisPercent.toInt().toString())\n }\n flexBasisPercentEdit.addTextChangedListener(\n FlexEditTextWatcher(context, flexBasisPercentInput, FlexBasisPercentInputValidator(),\n R.string.must_be_minus_one_or_non_negative_integer))\n\n val widthInput: TextInputLayout = view.findViewById(R.id.input_layout_width)\n val widthEdit: EditText = view.findViewById(R.id.edit_text_width)\n widthEdit.setText(context.pixelToDp(flexItem.width).toString())\n widthEdit.addTextChangedListener(\n FlexEditTextWatcher(context, widthInput, DimensionInputValidator(),\n R.string.must_be_minus_one_or_minus_two_or_non_negative_integer))\n\n val heightInput: TextInputLayout = view.findViewById(R.id.input_layout_height)\n val heightEdit: EditText= view.findViewById(R.id.edit_text_height)\n heightEdit.setText(context.pixelToDp(flexItem.height).toString())\n heightEdit.addTextChangedListener(\n FlexEditTextWatcher(context, heightInput, DimensionInputValidator(),\n R.string.must_be_minus_one_or_minus_two_or_non_negative_integer))\n\n val minWidthInput: TextInputLayout = view.findViewById(R.id.input_layout_min_width)\n val minWidthEdit: EditText = view.findViewById(R.id.edit_text_min_width)\n minWidthEdit.setText(context.pixelToDp(flexItem.minWidth).toString())\n minWidthEdit.addTextChangedListener(\n FlexEditTextWatcher(context, minWidthInput, FixedDimensionInputValidator(),\n R.string.must_be_non_negative_integer))\n\n val minHeightInput: TextInputLayout = view.findViewById(R.id.input_layout_min_height)\n val minHeightEdit: EditText = view.findViewById(R.id.edit_text_min_height)\n minHeightEdit.setText(context.pixelToDp(flexItem.minHeight).toString())\n minHeightEdit.addTextChangedListener(\n FlexEditTextWatcher(context, minHeightInput, FixedDimensionInputValidator(),\n R.string.must_be_non_negative_integer))\n\n val maxWidthInput: TextInputLayout = view.findViewById(R.id.input_layout_max_width)\n val maxWidthEdit: EditText = view.findViewById(R.id.edit_text_max_width)\n maxWidthEdit.setText(context.pixelToDp(flexItem.maxWidth).toString())\n maxWidthEdit.addTextChangedListener(\n FlexEditTextWatcher(context, maxWidthInput, FixedDimensionInputValidator(),\n R.string.must_be_non_negative_integer))\n\n val maxHeightInput: TextInputLayout = view.findViewById(R.id.input_layout_max_height)\n val maxHeightEdit: EditText = view.findViewById(R.id.edit_text_max_height)\n maxHeightEdit.setText(context.pixelToDp(flexItem.maxHeight).toString())\n maxHeightEdit.addTextChangedListener(\n FlexEditTextWatcher(context, maxHeightInput, FixedDimensionInputValidator(),\n R.string.must_be_non_negative_integer))\n\n setNextFocusesOnEnterDown(orderEdit, flexGrowEdit, flexShrinkEdit, flexBasisPercentEdit,\n widthEdit, heightEdit, minWidthEdit, minHeightEdit, maxWidthEdit, maxHeightEdit)\n\n val alignSelfSpinner: Spinner = view.findViewById(R.id.spinner_align_self)\n val arrayAdapter = ArrayAdapter.createFromResource(requireActivity(),\n R.array.array_align_self, R.layout.spinner_item)\n alignSelfSpinner.adapter = arrayAdapter\n alignSelfSpinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {\n override fun onItemSelected(parent: AdapterView<*>, ignored: View?, position: Int,\n id: Long) {\n flexItemInEdit.alignSelf = when (parent.getItemAtPosition(position).toString()) {\n alignSelfAuto -> AlignSelf.AUTO\n alignSelfFlexStart -> AlignItems.FLEX_START\n alignSelfFlexEnd -> AlignItems.FLEX_END\n alignSelfCenter -> AlignItems.CENTER\n alignSelfBaseline -> AlignItems.BASELINE\n alignSelfStretch -> AlignItems.STRETCH\n else -> return\n }\n }\n\n override fun onNothingSelected(parent: AdapterView<*>) {\n // No op\n }\n }\n\n val wrapBeforeCheckBox: CheckBox = view.findViewById(R.id.checkbox_wrap_before)\n wrapBeforeCheckBox.isChecked = flexItem.isWrapBefore\n wrapBeforeCheckBox.setOnCheckedChangeListener { _, isChecked ->\n flexItemInEdit.isWrapBefore = isChecked }\n val alignSelfPosition = arrayAdapter\n .getPosition(alignSelfAsString(flexItem.alignSelf))\n alignSelfSpinner.setSelection(alignSelfPosition)\n\n view.findViewById