Full Code of sunnyxibei/HenCoderPractice for AI

Repository: sunnyxibei/HenCoderPractice
Branch: master
Commit: da5c22cd5748
Files: 27
Total size: 34.1 KB

Directory structure:
gitextract_mu2re4hw/

├── .gitignore
├── README.md
├── app/
│   ├── .gitignore
│   ├── build.gradle.kts
│   ├── proguard-rules.pro
│   └── src/
│       ├── androidTest/
│       │   └── java/
│       │       └── com/
│       │           └── sunnyxibei/
│       │               └── hencoderpractice/
│       │                   └── ExampleInstrumentedTest.kt
│       ├── main/
│       │   ├── AndroidManifest.xml
│       │   ├── java/
│       │   │   └── com/
│       │   │       └── sunnyxibei/
│       │   │           └── hencoderpractice/
│       │   │               ├── MainActivity.kt
│       │   │               └── MapView.kt
│       │   └── res/
│       │       ├── drawable/
│       │       │   ├── ic_launcher_background.xml
│       │       │   └── ic_launcher_foreground.xml
│       │       ├── layout/
│       │       │   └── activity_main.xml
│       │       ├── menu/
│       │       │   └── menu_item.xml
│       │       ├── mipmap-anydpi-v26/
│       │       │   ├── ic_launcher.xml
│       │       │   └── ic_launcher_round.xml
│       │       └── values/
│       │           ├── attrs.xml
│       │           ├── colors.xml
│       │           ├── strings.xml
│       │           └── styles.xml
│       └── test/
│           └── java/
│               └── com/
│                   └── sunnyxibei/
│                       └── hencoderpractice/
│                           └── ExampleUnitTest.kt
├── build.gradle.kts
├── gradle/
│   └── wrapper/
│       ├── gradle-wrapper.jar
│       └── gradle-wrapper.properties
├── gradle.properties
├── gradlew
├── gradlew.bat
└── settings.gradle.kts

================================================
FILE CONTENTS
================================================

================================================
FILE: .gitignore
================================================
*.iml
.gradle
.idea
/local.properties
/.idea/workspace.xml
/.idea/libraries
.DS_Store
/build
/captures
.externalNativeBuild


================================================
FILE: README.md
================================================
# HenCoderPractice

HenCoder 三维旋转动效的实现

![demo gif](https://github.com/sunnyxibei/HenCoderPractice/blob/master/jpg/flipboard.gif?raw=true)

>这是凯哥在 HenCoder 讲解几何变换章节提到的一个动画栗子，很炫酷，极大地激发了偶的好奇心。正好这个周末手头没啥事儿，研究了一下实现。

* 首先，拆解动效，把gif图片放到手机上，咔咔咔不停地截屏，截出一帧一帧的图片
* 然后，分析这些图片，可以发现，动效分为三部分：
  * 开始动画，一个Y轴旋转45度动效，看过hencoder教程的童鞋应该很轻松实现
  * 中间动画，比较复杂，后面着重分解
  * 结束动画，一个绕X轴旋转45度动效，看过hencoder教程的童鞋应该很轻松实现

重点分析中间动画，一帧一帧观察，基本判断是，先旋转canvas坐标系，再裁切图形，然后使用camera3D旋转，保存camera效果 `camera.applyToCanvas(canvas);`，然后再把canvas坐标系旋转回来。本来想画个图解释一下，奈何时间有限，你先仔细体会一下吧......

实现中间动画，原理上面已经说了
```
		canvas.save();
	    camera.save();
	    canvas.translate(centerX, centerY);
	    canvas.rotate(-degreeZ);
	    camera.rotateY(degreeY);
	    camera.applyToCanvas(canvas);
	    //计算裁切参数时清注意，此时的canvas的坐标系已经移动
	    canvas.clipRect(0, -centerY, centerX, centerY);
	    canvas.rotate(degreeZ);
	    canvas.translate(-centerX, -centerY);
	    camera.restore();
	    canvas.drawBitmap(bitmap, x, y, paint);
	    canvas.restore();
```
划重点，需要注意：

	1、Canvas的几何变换，顺序是倒序
	2、clipRect执行时，canvas的坐标系已经被我们移动了，计算参数时要以移动后的坐标系计算
	3、循环播放动效时，在执行动效前，要重置几个动效相关的参数值
	4、第三个动效执行时，我们的canvas已经旋转了270度，所以此时的旋转<h2>实际上</h2>是绕Y轴旋转，而且旋转角度的正负也是反着的，你看下代码，再仔细体会一下



================================================
FILE: app/.gitignore
================================================
/build


================================================
FILE: app/build.gradle.kts
================================================
plugins {
    id("com.android.application")
    id("org.jetbrains.kotlin.android")
    id("org.jetbrains.kotlin.plugin.compose")
}

android {
    namespace = "com.sunnyxibei.hencoderpractice"
    compileSdk = 35

    defaultConfig {
        applicationId = "com.sunnyxibei.hencoderpractice"
        minSdk = 26
        targetSdk = 35
        versionCode = 1
        versionName = "1.0"
        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner" // Updated
        vectorDrawables {
            useSupportLibrary = true
        }
    }

    buildTypes {
        getByName("release") {
            isMinifyEnabled = false
            proguardFiles(getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro")
        }
    }

    buildFeatures {
        compose = true
        buildConfig = true
    }
    composeOptions {
        kotlinCompilerExtensionVersion = "1.5.14"
    }
    packaging {
        resources {
            excludes += "/META-INF/{AL2.0,LGPL2.1}"
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_17
        targetCompatibility = JavaVersion.VERSION_17
    }
    kotlinOptions {
        jvmTarget = JavaVersion.VERSION_17.toString()
    }
}

dependencies {
    implementation(fileTree(mapOf("dir" to "libs", "include" to listOf("*.jar"))))
    implementation("androidx.appcompat:appcompat:1.6.1")

    // Jetpack Compose BOM
    val composeBom = platform("androidx.compose:compose-bom:2024.05.00")
    implementation(composeBom)
    androidTestImplementation(composeBom)

    // Compose specific dependencies
    implementation("androidx.compose.ui:ui")
    implementation("androidx.compose.material3:material3")
    implementation("androidx.compose.ui:ui-tooling-preview")
    debugImplementation("androidx.compose.ui:ui-tooling")
    implementation("androidx.activity:activity-compose:1.9.0")

    // Test dependencies
    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1") {
        exclude(group = "com.android.support", module = "support-annotations")
    }
    androidTestImplementation("androidx.compose.ui:ui-test-junit4")
    testImplementation("junit:junit:4.12")
}


================================================
FILE: app/proguard-rules.pro
================================================
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in C:\Develop\Android\sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}

# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable

# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile


================================================
FILE: app/src/androidTest/java/com/sunnyxibei/hencoderpractice/ExampleInstrumentedTest.kt
================================================
package com.sunnyxibei.hencoderpractice

import android.support.test.runner.AndroidJUnit4
import androidx.test.platform.app.InstrumentationRegistry
import org.junit.Assert.*
import org.junit.Test
import org.junit.runner.RunWith

/**
 * Instrumented test, which will execute on an Android device.
 *
 * See [testing documentation](http://d.android.com/tools/testing).
 */
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
    @Test
    fun useAppContext() {
        // Context of the app under test.
        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
        assertEquals("com.sunnyxibei.hencoderpractice", appContext.packageName)
    }
}


================================================
FILE: app/src/main/AndroidManifest.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

================================================
FILE: app/src/main/java/com/sunnyxibei/hencoderpractice/MainActivity.kt
================================================
package com.sunnyxibei.hencoderpractice

import android.animation.Animator
import android.animation.AnimatorListenerAdapter
import android.animation.AnimatorSet
import android.animation.ObjectAnimator
import android.graphics.BitmapFactory
import android.os.Bundle
import android.os.Handler
import android.os.Looper
import androidx.activity.ComponentActivity // Changed from AppCompatActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.MoreVert
import androidx.compose.material3.* // Using Material 3
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.viewinterop.AndroidView

// It's good practice to define a theme for Compose
// For now, a basic MaterialTheme will be used.
// Usually, this would be in a separate Theme.kt file.
@Composable
fun AppTheme(content: @Composable () -> Unit) {
    MaterialTheme(
        colorScheme = lightColorScheme(), // Or darkColorScheme()
        content = content
    )
}

class MainActivity : ComponentActivity() { // Changed from AppCompatActivity

    private val handler = Handler(Looper.getMainLooper())
    private var mapViewInstance: MapView? = null // To hold the MapView instance for animation control
    private var animatorSet: AnimatorSet? = null // To control the animator set

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContent {
            AppTheme {
                MainScreen()
            }
        }
    }

    @OptIn(ExperimentalMaterial3Api::class)
    @Composable
    fun MainScreen() {
        val context = LocalContext.current
        var showMenu by remember { mutableStateOf(false) }

        Scaffold(
            topBar = {
                TopAppBar(
                    title = { Text(stringResource(id = R.string.app_name)) },
                    actions = {
                        IconButton(onClick = { showMenu = !showMenu }) {
                            Icon(Icons.Filled.MoreVert, contentDescription = "More options")
                        }
                        DropdownMenu(
                            expanded = showMenu,
                            onDismissRequest = { showMenu = false }
                        ) {
                            DropdownMenuItem(
                                text = { Text("Google Map") },
                                onClick = {
                                    mapViewInstance?.setBitmap(
                                        BitmapFactory.decodeResource(
                                            context.resources,
                                            R.drawable.google_map
                                        )
                                    )
                                    showMenu = false
                                }
                            )
                            DropdownMenuItem(
                                text = { Text("FlipBoard") },
                                onClick = {
                                    mapViewInstance?.setBitmap(
                                        BitmapFactory.decodeResource(
                                            context.resources,
                                            R.drawable.flip_board
                                        )
                                    )
                                    showMenu = false
                                }
                            )
                        }
                    }
                )
            }
        ) { paddingValues ->
            Box(modifier = Modifier.padding(paddingValues).fillMaxSize()) {
                MapViewComposable()
            }
        }
    }

    @Composable
    fun MapViewComposable() {
        AndroidView(
            modifier = Modifier.fillMaxSize(),
            factory = { context ->
                MapView(context).apply {
                    mapViewInstance = this
                    val animator1 = ObjectAnimator.ofFloat(this, "degreeY", 0f, -45f).apply {
                        duration = 1000
                        startDelay = 500
                    }
                    val animator2 = ObjectAnimator.ofFloat(this, "degreeZ", 0f, 270f).apply {
                        duration = 800
                        startDelay = 500
                    }
                    val animator3 = ObjectAnimator.ofFloat(this, "fixDegreeY", 0f, 30f).apply {
                        duration = 500
                        startDelay = 500
                    }

                    animatorSet = AnimatorSet().apply {
                        addListener(object : AnimatorListenerAdapter() {
                            override fun onAnimationEnd(animation: Animator) {
                                super.onAnimationEnd(animation)
                                handler.postDelayed({
                                    mapViewInstance?.let {
                                        if (!isDestroyed && !isFinishing) {
                                            it.reset()
                                            start()
                                        }
                                    }
                                }, 500)
                            }
                        })
                        playSequentially(animator1, animator2, animator3)
                        start()
                    }
                }
            }
        )
    }

    override fun onDestroy() {
        super.onDestroy()
        handler.removeCallbacksAndMessages(null)
        animatorSet?.cancel()
    }
}


================================================
FILE: app/src/main/java/com/sunnyxibei/hencoderpractice/MapView.kt
================================================
package com.sunnyxibei.hencoderpractice

import android.content.Context
import android.graphics.*
import android.graphics.drawable.BitmapDrawable
import android.util.AttributeSet
import android.view.View
import androidx.annotation.Keep

/**
 * 整个动画拆分成了三部分
 *
 * Created by jiayuanbin on 2017-9-23.
 */
class MapView @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = 0
) : View(context, attrs, defStyleAttr) {

    //Y轴方向旋转角度
    @set:Keep
    var degreeY: Float = 0f
        set(value) {
            field = value
            invalidate()
        }

    //不变的那一半，Y轴方向旋转角度
    @set:Keep
    var fixDegreeY: Float = 0f
        set(value) {
            field = value
            invalidate()
        }

    //Z轴方向（平面内）旋转的角度
    @set:Keep
    var degreeZ: Float = 0f
        set(value) {
            field = value
            invalidate()
        }

    private val paint: Paint
    private var bitmap: Bitmap
    private val camera: Camera

    init {
        val a = context.obtainStyledAttributes(attrs, R.styleable.MapView)
        val drawable = a.getDrawable(R.styleable.MapView_mv_background) as? BitmapDrawable
        a.recycle()

        bitmap = drawable?.bitmap ?: BitmapFactory.decodeResource(resources, R.drawable.flip_board)
        paint = Paint(Paint.ANTI_ALIAS_FLAG)
        camera = Camera()

        val displayMetrics = resources.displayMetrics
        val newZ = -displayMetrics.density * 6
        camera.setLocation(0f, 0f, newZ) // Use float values for camera
    }

    override fun onDraw(canvas: Canvas) {
        super.onDraw(canvas)

        val bitmapWidth = bitmap.width
        val bitmapHeight = bitmap.height
        val centerX = width / 2f // Use float for center calculations
        val centerY = height / 2f // Use float for center calculations
        val x = centerX - bitmapWidth / 2f
        val y = centerY - bitmapHeight / 2f

        //画变换的一半
        //先旋转，再裁切，再使用camera执行3D动效,**然后保存camera效果**,最后再旋转回来
        canvas.save()
        camera.save()
        canvas.translate(centerX, centerY)
        canvas.rotate(-degreeZ)
        camera.rotateY(degreeY)
        camera.applyToCanvas(canvas)
        //计算裁切参数时清注意，此时的canvas的坐标系已经移动
        canvas.clipRect(0f, -centerY, centerX, centerY) // Use float values
        canvas.rotate(degreeZ)
        canvas.translate(-centerX, -centerY)
        camera.restore()
        canvas.drawBitmap(bitmap, x, y, paint)
        canvas.restore()

        //画不变换的另一半
        canvas.save()
        camera.save()
        canvas.translate(centerX, centerY)
        canvas.rotate(-degreeZ)
        //计算裁切参数时清注意，此时的canvas的坐标系已经移动
        canvas.clipRect(-centerX, -centerY, 0f, centerY) // Use float values
        //此时的canvas的坐标系已经旋转，所以这里是rotateY
        camera.rotateY(fixDegreeY)
        camera.applyToCanvas(canvas)
        canvas.rotate(degreeZ)
        canvas.translate(-centerX, -centerY)
        camera.restore()
        canvas.drawBitmap(bitmap, x, y, paint)
        canvas.restore()
    }

    /**
     * 启动动画之前调用，把参数reset到初始状态
     */
    fun reset() {
        degreeY = 0f
        fixDegreeY = 0f
        degreeZ = 0f
        invalidate() // Invalidate after resetting properties
    }

    fun setBitmap(bitmap: Bitmap) {
        this.bitmap = bitmap
        invalidate()
    }
}


================================================
FILE: app/src/main/res/drawable/ic_launcher_background.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="108"
    android:viewportHeight="108">
    <path
        android:fillColor="#3DDC84"
        android:pathData="M0,0h108v108h-108z" />
    <path
        android:fillColor="#00000000"
        android:pathData="M9,0L9,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,0L19,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M29,0L29,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M39,0L39,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M49,0L49,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M59,0L59,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M69,0L69,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M79,0L79,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M89,0L89,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M99,0L99,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,9L108,9"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,19L108,19"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,29L108,29"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,39L108,39"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,49L108,49"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,59L108,59"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,69L108,69"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,79L108,79"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,89L108,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,99L108,99"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,29L89,29"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,39L89,39"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,49L89,49"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,59L89,59"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,69L89,69"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,79L89,79"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M29,19L29,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M39,19L39,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M49,19L49,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M59,19L59,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M69,19L69,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M79,19L79,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
</vector>


================================================
FILE: app/src/main/res/drawable/ic_launcher_foreground.xml
================================================
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:aapt="http://schemas.android.com/aapt"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="108"
    android:viewportHeight="108">
    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
        <aapt:attr name="android:fillColor">
            <gradient
                android:endX="85.84757"
                android:endY="92.4963"
                android:startX="42.9492"
                android:startY="49.59793"
                android:type="linear">
                <item
                    android:color="#44000000"
                    android:offset="0.0" />
                <item
                    android:color="#00000000"
                    android:offset="1.0" />
            </gradient>
        </aapt:attr>
    </path>
    <path
        android:fillColor="#FFFFFF"
        android:fillType="nonZero"
        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
        android:strokeWidth="1"
        android:strokeColor="#00000000" />
</vector>

================================================
FILE: app/src/main/res/layout/activity_main.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.sunnyxibei.hencoderpractice.MapView
        android:id="@+id/map_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerInParent="true"
        app:mv_background="@drawable/flip_board" />

</RelativeLayout>


================================================
FILE: app/src/main/res/menu/menu_item.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/google_map"
        android:title="Google Map" />
    <item
        android:id="@+id/flip_board"
        android:title="FlipBoard" />

</menu>

================================================
FILE: app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@drawable/ic_launcher_background" />
    <foreground android:drawable="@drawable/ic_launcher_foreground" />
    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>

================================================
FILE: app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@drawable/ic_launcher_background" />
    <foreground android:drawable="@drawable/ic_launcher_foreground" />
    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>

================================================
FILE: app/src/main/res/values/attrs.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="MapView">
        <attr name="mv_background" format="reference" />
    </declare-styleable>
</resources>

================================================
FILE: app/src/main/res/values/colors.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
</resources>


================================================
FILE: app/src/main/res/values/strings.xml
================================================
<resources>
    <string name="app_name">HenCoderPractice</string>
</resources>


================================================
FILE: app/src/main/res/values/styles.xml
================================================
<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>


================================================
FILE: app/src/test/java/com/sunnyxibei/hencoderpractice/ExampleUnitTest.kt
================================================
package com.sunnyxibei.hencoderpractice

import org.junit.Assert.*
import org.junit.Test

/**
 * Example local unit test, which will execute on the development machine (host).
 *
 * See [testing documentation](http://d.android.com/tools/testing).
 */
class ExampleUnitTest {
    @Test
    fun addition_isCorrect() {
        assertEquals(4, 2 + 2)
    }
}


================================================
FILE: build.gradle.kts
================================================
allprojects {
    repositories {
        maven { url = uri("https://maven.aliyun.com/repository/public") }
        maven { url = uri("https://maven.aliyun.com/repository/central") }
        maven { url = uri("https://maven.aliyun.com/repository/google") }
        maven { url = uri("https://maven.aliyun.com/repository/gradle-plugin") }
        google()
        mavenCentral()
        maven { url = uri("https://jitpack.io") }
    }
}

val newBuildDir: Directory = rootProject.layout.buildDirectory.dir("../../build").get()
rootProject.layout.buildDirectory.value(newBuildDir)

subprojects {
    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
    project.layout.buildDirectory.value(newSubprojectBuildDir)
}
subprojects {
    project.evaluationDependsOn(":app")
}

tasks.register<Delete>("clean") {
    delete(rootProject.layout.buildDirectory)
}


================================================
FILE: gradle/wrapper/gradle-wrapper.properties
================================================
#Sat Sep 23 22:49:00 CST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-all.zip


================================================
FILE: gradle.properties
================================================
org.gradle.jvmargs=-Xmx4G -XX:MaxMetaspaceSize=2G -XX:+HeapDumpOnOutOfMemoryError
android.useAndroidX=true
android.enableJetifier=true
android.nonTransitiveRClass=true
#set gradle jdk 17
org.gradle.java.home=/Library/Java/JavaVirtualMachines/jdk-17.jdk/Contents/Home

================================================
FILE: gradlew
================================================
#!/usr/bin/env bash

##############################################################################
##
##  Gradle start up script for UN*X
##
##############################################################################

# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS=""

APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`

# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"

warn ( ) {
    echo "$*"
}

die ( ) {
    echo
    echo "$*"
    echo
    exit 1
}

# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
case "`uname`" in
  CYGWIN* )
    cygwin=true
    ;;
  Darwin* )
    darwin=true
    ;;
  MINGW* )
    msys=true
    ;;
esac

# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
    ls=`ls -ld "$PRG"`
    link=`expr "$ls" : '.*-> \(.*\)$'`
    if expr "$link" : '/.*' > /dev/null; then
        PRG="$link"
    else
        PRG=`dirname "$PRG"`"/$link"
    fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null

CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar

# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
        # IBM's JDK on AIX uses strange locations for the executables
        JAVACMD="$JAVA_HOME/jre/sh/java"
    else
        JAVACMD="$JAVA_HOME/bin/java"
    fi
    if [ ! -x "$JAVACMD" ] ; then
        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
    fi
else
    JAVACMD="java"
    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi

# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
    MAX_FD_LIMIT=`ulimit -H -n`
    if [ $? -eq 0 ] ; then
        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
            MAX_FD="$MAX_FD_LIMIT"
        fi
        ulimit -n $MAX_FD
        if [ $? -ne 0 ] ; then
            warn "Could not set maximum file descriptor limit: $MAX_FD"
        fi
    else
        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
    fi
fi

# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi

# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
    JAVACMD=`cygpath --unix "$JAVACMD"`

    # We build the pattern for arguments to be converted via cygpath
    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
    SEP=""
    for dir in $ROOTDIRSRAW ; do
        ROOTDIRS="$ROOTDIRS$SEP$dir"
        SEP="|"
    done
    OURCYGPATTERN="(^($ROOTDIRS))"
    # Add a user-defined pattern to the cygpath arguments
    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
    fi
    # Now convert the arguments - kludge to limit ourselves to /bin/sh
    i=0
    for arg in "$@" ; do
        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option

        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
        else
            eval `echo args$i`="\"$arg\""
        fi
        i=$((i+1))
    done
    case $i in
        (0) set -- ;;
        (1) set -- "$args0" ;;
        (2) set -- "$args0" "$args1" ;;
        (3) set -- "$args0" "$args1" "$args2" ;;
        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
    esac
fi

# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
function splitJvmOpts() {
    JVM_OPTS=("$@")
}
eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"

exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"


================================================
FILE: gradlew.bat
================================================
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem  Gradle startup script for Windows
@rem
@rem ##########################################################################

@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal

@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS=

set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%

@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome

set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init

echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.

goto fail

:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe

if exist "%JAVA_EXE%" goto init

echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.

goto fail

:init
@rem Get command-line arguments, handling Windowz variants

if not "%OS%" == "Windows_NT" goto win9xME_args
if "%@eval[2+2]" == "4" goto 4NT_args

:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2

:win9xME_args_slurp
if "x%~1" == "x" goto execute

set CMD_LINE_ARGS=%*
goto execute

:4NT_args
@rem Get arguments from the 4NT Shell from JP Software
set CMD_LINE_ARGS=%$

:execute
@rem Setup the command line

set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%

:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd

:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1

:mainEnd
if "%OS%"=="Windows_NT" endlocal

:omega


================================================
FILE: settings.gradle.kts
================================================
pluginManagement {
    buildscript {
        repositories {
            maven { url = uri("https://maven.aliyun.com/repository/public") }
            maven { url = uri("https://maven.aliyun.com/repository/central") }
            maven { url = uri("https://maven.aliyun.com/repository/google") }
            maven { url = uri("https://maven.aliyun.com/repository/gradle-plugin") }
            mavenCentral()
        }
    }

    repositories {
        maven { url = uri("https://maven.aliyun.com/repository/public") }
        maven { url = uri("https://maven.aliyun.com/repository/central") }
        maven { url = uri("https://maven.aliyun.com/repository/google") }
        maven { url = uri("https://maven.aliyun.com/repository/gradle-plugin") }
        google()
        mavenCentral()
        maven { url = uri("https://jitpack.io") }
        gradlePluginPortal()
    }
}

plugins {
    id("com.android.application") version "8.7.3" apply false
    id("org.jetbrains.kotlin.android") version "2.1.0" apply false
    id("org.jetbrains.kotlin.plugin.compose") version "2.1.0" apply false
}

rootProject.name = "HenCoderPractice"
include(":app")