![](\"https://raw.githubusercontent.com/roughike/BottomBar/master/graphics/shy-demo.gif\")
![](\"https://raw.githubusercontent.com/roughike/BottomBar/master/graphics/shifting-demo.gif\")
![](\"https://raw.githubusercontent.com/roughike/BottomBar/master/graphics/screenshot_tablet.png\")
\n\n## Version 2.0 released!\n\n[The latest version before that can be found in the v1 branch](https://github.com/roughike/BottomBar/tree/v1)\n\n* Cleaner code and better APIs\n* No more unnecessary stuff or spaghetti mess\n* Now the look, feel and behavior is defined in XML, as it should be\n* No more nasty regressions, thanks to the automated tests\n* **Everything is a little different compared to earlier, but it's for the greater good!**\n\n[How to contribute](https://github.com/roughike/BottomBar/blob/master/README.md#contributions)\n\n[Changelog](https://github.com/roughike/BottomBar/blob/master/CHANGELOG.md)\n\n## What?\n\nA custom view component that mimics the new [Material Design Bottom Navigation pattern](https://www.google.com/design/spec/components/bottom-navigation.html).\n\n## Does it work on my Grandpa Gary's HTC Dream?\n\nNope. The minSDK version is **API level 11 (Honeycomb).**\n\n## Gimme that Gradle sweetness, pls?\n\n```groovy\ncompile 'com.roughike:bottom-bar:2.3.1'\n```\n\n**Maven:**\n```xml\nvalues/xml/shifting: the selected tab is wider than the rest. shy: put the BottomBar inside a CoordinatorLayout and it'll automatically hide on scroll! underNavbar: draw the BottomBar under the navBar!fonts/MySuperDuperFont.ttf. In that case your font path would look like src/main/assets/fonts/MySuperDuperFont.ttf, but you only need to provide fonts/MySuperDuperFont.ttf, as the asset folder will be auto-filled for you.\n * Note: Will be immediately called for the currently selected tab\n * once when set.\n *\n * @param listener a listener for monitoring changes in tab selection.\n */\n public void setOnTabSelectListener(@NonNull OnTabSelectListener listener) {\n setOnTabSelectListener(listener, true);\n }\n\n /**\n * Set a listener that gets fired when the selected {@link BottomBarTab} changes.\n *
\n * If {@code shouldFireInitially} is set to false, this listener isn't fired straight away\n * it's set, but you'll get all events normally for consecutive tab selection changes.\n *\n * @param listener a listener for monitoring changes in tab selection.\n * @param shouldFireInitially whether the listener should be fired the first time it's set.\n */\n public void setOnTabSelectListener(@NonNull OnTabSelectListener listener, boolean shouldFireInitially) {\n onTabSelectListener = listener;\n\n if (shouldFireInitially && getTabCount() > 0) {\n listener.onTabSelected(getCurrentTabId());\n }\n }\n\n /**\n * Removes the current {@link OnTabSelectListener} listener\n */\n public void removeOnTabSelectListener() {\n onTabSelectListener = null;\n }\n\n /**\n * Set a listener that gets fired when a currently selected {@link BottomBarTab} is clicked.\n *\n * @param listener a listener for handling tab reselections.\n */\n public void setOnTabReselectListener(@NonNull OnTabReselectListener listener) {\n onTabReselectListener = listener;\n }\n\n /**\n * Removes the current {@link OnTabReselectListener} listener\n */\n public void removeOnTabReselectListener() {\n onTabReselectListener = null;\n }\n\n /**\n * Set the default selected to be the tab with the corresponding tab id.\n * By default, the first tab in the container is the default tab.\n */\n public void setDefaultTab(@IdRes int defaultTabId) {\n int defaultTabPosition = findPositionForTabWithId(defaultTabId);\n setDefaultTabPosition(defaultTabPosition);\n }\n\n /**\n * Sets the default tab for this BottomBar that is shown until the user changes\n * the selection.\n *\n * @param defaultTabPosition the default tab position.\n */\n public void setDefaultTabPosition(int defaultTabPosition) {\n if (isComingFromRestoredState) return;\n\n selectTabAtPosition(defaultTabPosition);\n }\n\n /**\n * Select the tab with the corresponding id.\n */\n public void selectTabWithId(@IdRes int tabResId) {\n int tabPosition = findPositionForTabWithId(tabResId);\n selectTabAtPosition(tabPosition);\n }\n\n /**\n * Select a tab at the specified position.\n *\n * @param position the position to select.\n */\n public void selectTabAtPosition(int position) {\n selectTabAtPosition(position, false);\n }\n\n /**\n * Select a tab at the specified position.\n *\n * @param position the position to select.\n * @param animate should the tab change be animated or not.\n */\n public void selectTabAtPosition(int position, boolean animate) {\n if (position > getTabCount() - 1 || position < 0) {\n throw new IndexOutOfBoundsException(\"Can't select tab at position \" +\n position + \". This BottomBar has no items at that position.\");\n }\n\n BottomBarTab oldTab = getCurrentTab();\n BottomBarTab newTab = getTabAtPosition(position);\n\n oldTab.deselect(animate);\n newTab.select(animate);\n\n updateSelectedTab(position);\n shiftingMagic(oldTab, newTab, animate);\n handleBackgroundColorChange(newTab, animate);\n }\n\n public int getTabCount() {\n return tabContainer.getChildCount();\n }\n\n /**\n * Get the currently selected tab.\n */\n public BottomBarTab getCurrentTab() {\n return getTabAtPosition(getCurrentTabPosition());\n }\n\n /**\n * Get the tab at the specified position.\n */\n public BottomBarTab getTabAtPosition(int position) {\n View child = tabContainer.getChildAt(position);\n\n if (child instanceof BadgeContainer) {\n return findTabInLayout((BadgeContainer) child);\n }\n\n return (BottomBarTab) child;\n }\n\n /**\n * Get the resource id for the currently selected tab.\n */\n @IdRes\n public int getCurrentTabId() {\n return getCurrentTab().getId();\n }\n\n /**\n * Get the currently selected tab position.\n */\n public int getCurrentTabPosition() {\n return currentTabPosition;\n }\n\n /**\n * Find the tabs' position in the container by id.\n */\n public int findPositionForTabWithId(@IdRes int tabId) {\n return getTabWithId(tabId).getIndexInTabContainer();\n }\n\n /**\n * Find a BottomBarTab with the corresponding id.\n */\n public BottomBarTab getTabWithId(@IdRes int tabId) {\n return (BottomBarTab) tabContainer.findViewById(tabId);\n }\n\n /**\n * Controls whether the long pressed tab title should be displayed in\n * a helpful Toast if the title is not currently visible.\n *\n * @param enabled true if toasts should be shown to indicate the title\n * of a long pressed tab, false otherwise.\n */\n public void setLongPressHintsEnabled(boolean enabled) {\n longPressHintsEnabled = enabled;\n }\n\n /**\n * Set alpha value used for inactive BottomBarTabs.\n */\n public void setInActiveTabAlpha(float alpha) {\n inActiveTabAlpha = alpha;\n\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setInActiveAlpha(inActiveTabAlpha);\n }\n });\n }\n\n /**\n * Set alpha value used for active BottomBarTabs.\n */\n public void setActiveTabAlpha(float alpha) {\n activeTabAlpha = alpha;\n\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setActiveAlpha(activeTabAlpha);\n }\n });\n }\n\n public void setInActiveTabColor(@ColorInt int color) {\n inActiveTabColor = color;\n\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setInActiveColor(inActiveTabColor);\n }\n });\n }\n\n /**\n * Set active color used for selected BottomBarTabs.\n */\n public void setActiveTabColor(@ColorInt int color) {\n activeTabColor = color;\n\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setActiveColor(activeTabColor);\n }\n });\n }\n\n /**\n * Set background color for the badge.\n */\n public void setBadgeBackgroundColor(@ColorInt int color) {\n badgeBackgroundColor = color;\n\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setBadgeBackgroundColor(badgeBackgroundColor);\n }\n });\n }\n\n /**\n * Controls whether the badge (if any) for active tabs\n * should be hidden or not.\n */\n public void setBadgesHideWhenActive(final boolean hideWhenSelected) {\n hideBadgeWhenActive = hideWhenSelected;\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setBadgeHidesWhenActive(hideWhenSelected);\n }\n });\n }\n\n /**\n * Set custom text apperance for all BottomBarTabs.\n */\n public void setTabTitleTextAppearance(int textAppearance) {\n titleTextAppearance = textAppearance;\n\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setTitleTextAppearance(titleTextAppearance);\n }\n });\n }\n\n /**\n * Set a custom typeface for all tab's titles.\n *\n * @param fontPath path for your custom font file, such as fonts/MySuperDuperFont.ttf.\n * In that case your font path would look like src/main/assets/fonts/MySuperDuperFont.ttf,\n * but you only need to provide fonts/MySuperDuperFont.ttf, as the asset folder\n * will be auto-filled for you.\n */\n public void setTabTitleTypeface(String fontPath) {\n Typeface actualTypeface = getTypeFaceFromAsset(fontPath);\n setTabTitleTypeface(actualTypeface);\n }\n\n /**\n * Set a custom typeface for all tab's titles.\n */\n public void setTabTitleTypeface(Typeface typeface) {\n titleTypeFace = typeface;\n\n batchPropertyApplier.applyToAllTabs(new BatchTabPropertyApplier.TabPropertyUpdater() {\n @Override\n public void update(BottomBarTab tab) {\n tab.setTitleTypeface(titleTypeFace);\n }\n });\n }\n\n @Override\n protected void onLayout(boolean changed, int left, int top, int right, int bottom) {\n super.onLayout(changed, left, top, right, bottom);\n\n if (changed) {\n if (!isTabletMode) {\n resizeTabsToCorrectSizes(currentTabs);\n }\n\n updateTitleBottomPadding();\n\n if (isShy()) {\n initializeShyBehavior();\n }\n\n if (drawUnderNav()) {\n resizeForDrawingUnderNavbar();\n }\n }\n }\n\n private void updateTitleBottomPadding() {\n if (isIconsOnlyMode()) {\n return;\n }\n\n int tabCount = getTabCount();\n\n if (tabContainer == null || tabCount == 0 || !isShiftingMode()) {\n return;\n }\n\n for (int i = 0; i < tabCount; i++) {\n BottomBarTab tab = getTabAtPosition(i);\n TextView title = tab.getTitleView();\n\n if (title == null) {\n continue;\n }\n\n int baseline = title.getBaseline();\n int height = title.getHeight();\n int paddingInsideTitle = height - baseline;\n int missingPadding = tenDp - paddingInsideTitle;\n\n if (missingPadding > 0) {\n title.setPadding(title.getPaddingLeft(), title.getPaddingTop(),\n title.getPaddingRight(), missingPadding + title.getPaddingBottom());\n }\n }\n }\n\n private void initializeShyBehavior() {\n ViewParent parent = getParent();\n\n boolean hasAbusiveParent = parent != null\n && parent instanceof CoordinatorLayout;\n\n if (!hasAbusiveParent) {\n throw new RuntimeException(\"In order to have shy behavior, the \" +\n \"BottomBar must be a direct child of a CoordinatorLayout.\");\n }\n\n if (!shyHeightAlreadyCalculated) {\n int height = getHeight();\n\n if (height != 0) {\n updateShyHeight(height);\n getShySettings().shyHeightCalculated();\n shyHeightAlreadyCalculated = true;\n }\n }\n }\n\n private void updateShyHeight(int height) {\n ((CoordinatorLayout.LayoutParams) getLayoutParams())\n .setBehavior(new BottomNavigationBehavior(height, 0, false));\n }\n\n private void resizeForDrawingUnderNavbar() {\n if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {\n int currentHeight = getHeight();\n\n if (currentHeight != 0 && !navBarAccountedHeightCalculated) {\n navBarAccountedHeightCalculated = true;\n tabContainer.getLayoutParams().height = currentHeight;\n\n int navbarHeight = NavbarUtils.getNavbarHeight(getContext());\n int finalHeight = currentHeight + navbarHeight;\n getLayoutParams().height = finalHeight;\n\n if (isShy()) {\n updateShyHeight(finalHeight);\n }\n }\n }\n }\n\n @Override\n public Parcelable onSaveInstanceState() {\n Bundle bundle = saveState();\n bundle.putParcelable(\"superstate\", super.onSaveInstanceState());\n return bundle;\n }\n\n @VisibleForTesting\n Bundle saveState() {\n Bundle outState = new Bundle();\n outState.putInt(STATE_CURRENT_SELECTED_TAB, currentTabPosition);\n\n return outState;\n }\n\n @Override\n public void onRestoreInstanceState(Parcelable state) {\n if (state instanceof Bundle) {\n Bundle bundle = (Bundle) state;\n restoreState(bundle);\n\n state = bundle.getParcelable(\"superstate\");\n }\n super.onRestoreInstanceState(state);\n }\n\n @VisibleForTesting\n void restoreState(Bundle savedInstanceState) {\n if (savedInstanceState != null) {\n isComingFromRestoredState = true;\n ignoreTabReselectionListener = true;\n\n int restoredPosition = savedInstanceState.getInt(STATE_CURRENT_SELECTED_TAB, currentTabPosition);\n selectTabAtPosition(restoredPosition, false);\n }\n }\n\n @Override\n public void onClick(View target) {\n if (!(target instanceof BottomBarTab)) return;\n handleClick((BottomBarTab) target);\n }\n\n @Override\n public boolean onLongClick(View target) {\n return !(target instanceof BottomBarTab) || handleLongClick((BottomBarTab) target);\n }\n\n private BottomBarTab findTabInLayout(ViewGroup child) {\n for (int i = 0; i < child.getChildCount(); i++) {\n View candidate = child.getChildAt(i);\n\n if (candidate instanceof BottomBarTab) {\n return (BottomBarTab) candidate;\n }\n }\n\n return null;\n }\n\n private void handleClick(BottomBarTab newTab) {\n BottomBarTab oldTab = getCurrentTab();\n\n if (tabSelectionInterceptor != null\n && tabSelectionInterceptor.shouldInterceptTabSelection(oldTab.getId(), newTab.getId())) {\n return;\n }\n\n oldTab.deselect(true);\n newTab.select(true);\n\n shiftingMagic(oldTab, newTab, true);\n handleBackgroundColorChange(newTab, true);\n updateSelectedTab(newTab.getIndexInTabContainer());\n }\n\n private boolean handleLongClick(BottomBarTab longClickedTab) {\n boolean areInactiveTitlesHidden = isShiftingMode() || isTabletMode;\n boolean isClickedTitleHidden = !longClickedTab.isActive();\n boolean shouldShowHint = areInactiveTitlesHidden\n && isClickedTitleHidden\n && longPressHintsEnabled;\n\n if (shouldShowHint) {\n Toast.makeText(getContext(), longClickedTab.getTitle(), Toast.LENGTH_SHORT)\n .show();\n }\n\n return true;\n }\n\n private void updateSelectedTab(int newPosition) {\n int newTabId = getTabAtPosition(newPosition).getId();\n\n if (newPosition != currentTabPosition) {\n if (onTabSelectListener != null) {\n onTabSelectListener.onTabSelected(newTabId);\n }\n } else if (onTabReselectListener != null && !ignoreTabReselectionListener) {\n onTabReselectListener.onTabReSelected(newTabId);\n }\n\n currentTabPosition = newPosition;\n\n if (ignoreTabReselectionListener) {\n ignoreTabReselectionListener = false;\n }\n }\n\n private void shiftingMagic(BottomBarTab oldTab, BottomBarTab newTab, boolean animate) {\n if (isShiftingMode()) {\n oldTab.updateWidth(inActiveShiftingItemWidth, animate);\n newTab.updateWidth(activeShiftingItemWidth, animate);\n }\n }\n\n private void handleBackgroundColorChange(BottomBarTab tab, boolean animate) {\n int newColor = tab.getBarColorWhenSelected();\n\n if (currentBackgroundColor == newColor) {\n return;\n }\n\n if (!animate) {\n outerContainer.setBackgroundColor(newColor);\n return;\n }\n\n View clickedView = tab;\n\n if (tab.hasActiveBadge()) {\n clickedView = tab.getOuterView();\n }\n\n animateBGColorChange(clickedView, newColor);\n currentBackgroundColor = newColor;\n }\n\n private void animateBGColorChange(View clickedView, final int newColor) {\n prepareForBackgroundColorAnimation(newColor);\n\n if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {\n if (!outerContainer.isAttachedToWindow()) {\n return;\n }\n\n backgroundCircularRevealAnimation(clickedView, newColor);\n } else {\n backgroundCrossfadeAnimation(newColor);\n }\n }\n\n private void prepareForBackgroundColorAnimation(int newColor) {\n outerContainer.clearAnimation();\n backgroundOverlay.clearAnimation();\n\n backgroundOverlay.setBackgroundColor(newColor);\n backgroundOverlay.setVisibility(View.VISIBLE);\n }\n\n @TargetApi(Build.VERSION_CODES.LOLLIPOP)\n private void backgroundCircularRevealAnimation(View clickedView, final int newColor) {\n int centerX = (int) (ViewCompat.getX(clickedView) + (clickedView.getMeasuredWidth() / 2));\n int yOffset = isTabletMode ? (int) ViewCompat.getY(clickedView) : 0;\n int centerY = yOffset + clickedView.getMeasuredHeight() / 2;\n int startRadius = 0;\n int finalRadius = isTabletMode ? outerContainer.getHeight() : outerContainer.getWidth();\n\n Animator animator = ViewAnimationUtils.createCircularReveal(\n backgroundOverlay,\n centerX,\n centerY,\n startRadius,\n finalRadius\n );\n\n if (isTabletMode) {\n animator.setDuration(500);\n }\n\n animator.addListener(new AnimatorListenerAdapter() {\n @Override\n public void onAnimationEnd(Animator animation) {\n onEnd();\n }\n\n @Override\n public void onAnimationCancel(Animator animation) {\n onEnd();\n }\n\n private void onEnd() {\n outerContainer.setBackgroundColor(newColor);\n backgroundOverlay.setVisibility(View.INVISIBLE);\n ViewCompat.setAlpha(backgroundOverlay, 1);\n }\n });\n\n animator.start();\n }\n\n private void backgroundCrossfadeAnimation(final int newColor) {\n ViewCompat.setAlpha(backgroundOverlay, 0);\n ViewCompat.animate(backgroundOverlay)\n .alpha(1)\n .setListener(new ViewPropertyAnimatorListenerAdapter() {\n @Override\n public void onAnimationEnd(View view) {\n onEnd();\n }\n\n @Override\n public void onAnimationCancel(View view) {\n onEnd();\n }\n\n private void onEnd() {\n outerContainer.setBackgroundColor(newColor);\n backgroundOverlay.setVisibility(View.INVISIBLE);\n ViewCompat.setAlpha(backgroundOverlay, 1);\n }\n })\n .start();\n }\n}\n"
},
{
"path": "bottom-bar/src/main/java/com/roughike/bottombar/BottomBarBadge.java",
"content": "package com.roughike.bottombar;\n\nimport android.content.Context;\nimport android.graphics.drawable.Drawable;\nimport android.graphics.drawable.ShapeDrawable;\nimport android.os.Build;\nimport android.os.Bundle;\nimport android.support.annotation.VisibleForTesting;\nimport android.support.v4.view.ViewCompat;\nimport android.support.v7.widget.AppCompatImageView;\nimport android.view.Gravity;\nimport android.view.ViewGroup;\nimport android.view.ViewTreeObserver;\nimport android.widget.TextView;\n\n/*\n * BottomBar library for Android\n * Copyright (c) 2016 Iiro Krankka (http://github.com/roughike).\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 */\nclass BottomBarBadge extends TextView {\n private int count;\n private boolean isVisible = false;\n\n BottomBarBadge(Context context) {\n super(context);\n }\n\n /**\n * Set the unread / new item / whatever count for this Badge.\n *\n * @param count the value this Badge should show.\n */\n void setCount(int count) {\n this.count = count;\n setText(String.valueOf(count));\n }\n\n /**\n * Get the currently showing count for this Badge.\n *\n * @return current count for the Badge.\n */\n int getCount() {\n return count;\n }\n\n /**\n * Shows the badge with a neat little scale animation.\n */\n void show() {\n isVisible = true;\n ViewCompat.animate(this)\n .setDuration(150)\n .alpha(1)\n .scaleX(1)\n .scaleY(1)\n .start();\n }\n\n /**\n * Hides the badge with a neat little scale animation.\n */\n void hide() {\n isVisible = false;\n ViewCompat.animate(this)\n .setDuration(150)\n .alpha(0)\n .scaleX(0)\n .scaleY(0)\n .start();\n }\n\n /**\n * Is this badge currently visible?\n *\n * @return true is this badge is visible, otherwise false.\n */\n boolean isVisible() {\n return isVisible;\n }\n\n void attachToTab(BottomBarTab tab, int backgroundColor) {\n ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(\n ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);\n\n setLayoutParams(params);\n setGravity(Gravity.CENTER);\n MiscUtils.setTextAppearance(this, R.style.BB_BottomBarBadge_Text);\n\n setColoredCircleBackground(backgroundColor);\n wrapTabAndBadgeInSameContainer(tab);\n }\n\n void setColoredCircleBackground(int circleColor) {\n int innerPadding = MiscUtils.dpToPixel(getContext(), 1);\n ShapeDrawable backgroundCircle = BadgeCircle.make(innerPadding * 3, circleColor);\n setPadding(innerPadding, innerPadding, innerPadding, innerPadding);\n setBackgroundCompat(backgroundCircle);\n }\n\n private void wrapTabAndBadgeInSameContainer(final BottomBarTab tab) {\n ViewGroup tabContainer = (ViewGroup) tab.getParent();\n tabContainer.removeView(tab);\n\n final BadgeContainer badgeContainer = new BadgeContainer(getContext());\n badgeContainer.setLayoutParams(new ViewGroup.LayoutParams(\n ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));\n\n badgeContainer.addView(tab);\n badgeContainer.addView(this);\n\n tabContainer.addView(badgeContainer, tab.getIndexInTabContainer());\n\n badgeContainer.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {\n @SuppressWarnings(\"deprecation\")\n @Override\n public void onGlobalLayout() {\n badgeContainer.getViewTreeObserver().removeGlobalOnLayoutListener(this);\n adjustPositionAndSize(tab);\n }\n });\n }\n\n void removeFromTab(BottomBarTab tab) {\n BadgeContainer badgeAndTabContainer = (BadgeContainer) getParent();\n ViewGroup originalTabContainer = (ViewGroup) badgeAndTabContainer.getParent();\n\n badgeAndTabContainer.removeView(tab);\n originalTabContainer.removeView(badgeAndTabContainer);\n originalTabContainer.addView(tab, tab.getIndexInTabContainer());\n }\n\n void adjustPositionAndSize(BottomBarTab tab) {\n AppCompatImageView iconView = tab.getIconView();\n ViewGroup.LayoutParams params = getLayoutParams();\n\n int size = Math.max(getWidth(), getHeight());\n float xOffset = (float) (iconView.getWidth() / 1.25);\n\n setX(iconView.getX() + xOffset);\n setTranslationY(10);\n\n if (params.width != size || params.height != size) {\n params.width = size;\n params.height = size;\n setLayoutParams(params);\n }\n }\n\n @SuppressWarnings(\"deprecation\")\n private void setBackgroundCompat(Drawable background) {\n if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {\n setBackground(background);\n } else {\n setBackgroundDrawable(background);\n }\n }\n}\n"
},
{
"path": "bottom-bar/src/main/java/com/roughike/bottombar/BottomBarTab.java",
"content": "package com.roughike.bottombar;\n\nimport android.animation.ArgbEvaluator;\nimport android.animation.ValueAnimator;\nimport android.content.Context;\nimport android.graphics.Typeface;\nimport android.os.Build;\nimport android.os.Bundle;\nimport android.os.Parcelable;\nimport android.support.annotation.ColorInt;\nimport android.support.annotation.NonNull;\nimport android.support.annotation.VisibleForTesting;\nimport android.support.v4.view.ViewCompat;\nimport android.support.v4.view.ViewPropertyAnimatorCompat;\nimport android.support.v7.widget.AppCompatImageView;\nimport android.view.Gravity;\nimport android.view.ViewGroup;\nimport android.widget.LinearLayout;\nimport android.widget.TextView;\n\n/*\n * BottomBar library for Android\n * Copyright (c) 2016 Iiro Krankka (http://github.com/roughike).\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 */\npublic class BottomBarTab extends LinearLayout {\n @VisibleForTesting\n static final String STATE_BADGE_COUNT = \"STATE_BADGE_COUNT_FOR_TAB_\";\n\n private static final long ANIMATION_DURATION = 150;\n private static final float ACTIVE_TITLE_SCALE = 1;\n private static final float INACTIVE_FIXED_TITLE_SCALE = 0.86f;\n private static final float ACTIVE_SHIFTING_TITLELESS_ICON_SCALE = 1.24f;\n private static final float INACTIVE_SHIFTING_TITLELESS_ICON_SCALE = 1f;\n\n private final int sixDps;\n private final int eightDps;\n private final int sixteenDps;\n\n @VisibleForTesting\n BottomBarBadge badge;\n\n private Type type = Type.FIXED;\n private boolean isTitleless;\n private int iconResId;\n private String title;\n private float inActiveAlpha;\n private float activeAlpha;\n private int inActiveColor;\n private int activeColor;\n private int barColorWhenSelected;\n private int badgeBackgroundColor;\n private boolean badgeHidesWhenActive;\n private AppCompatImageView iconView;\n private TextView titleView;\n private boolean isActive;\n private int indexInContainer;\n private int titleTextAppearanceResId;\n private Typeface titleTypeFace;\n\n BottomBarTab(Context context) {\n super(context);\n\n sixDps = MiscUtils.dpToPixel(context, 6);\n eightDps = MiscUtils.dpToPixel(context, 8);\n sixteenDps = MiscUtils.dpToPixel(context, 16);\n }\n\n void setConfig(@NonNull Config config) {\n setInActiveAlpha(config.inActiveTabAlpha);\n setActiveAlpha(config.activeTabAlpha);\n setInActiveColor(config.inActiveTabColor);\n setActiveColor(config.activeTabColor);\n setBarColorWhenSelected(config.barColorWhenSelected);\n setBadgeBackgroundColor(config.badgeBackgroundColor);\n setBadgeHidesWhenActive(config.badgeHidesWhenSelected);\n setTitleTextAppearance(config.titleTextAppearance);\n setTitleTypeface(config.titleTypeFace);\n }\n\n void prepareLayout() {\n inflate(getContext(), getLayoutResource(), this);\n setOrientation(VERTICAL);\n setGravity(isTitleless? Gravity.CENTER : Gravity.CENTER_HORIZONTAL);\n setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));\n setBackgroundResource(MiscUtils.getDrawableRes(getContext(), R.attr.selectableItemBackgroundBorderless));\n\n iconView = (AppCompatImageView) findViewById(R.id.bb_bottom_bar_icon);\n iconView.setImageResource(iconResId);\n\n if (type != Type.TABLET && !isTitleless) {\n titleView = (TextView) findViewById(R.id.bb_bottom_bar_title);\n titleView.setVisibility(VISIBLE);\n\n if (type == Type.SHIFTING) {\n findViewById(R.id.spacer).setVisibility(VISIBLE);\n }\n\n updateTitle();\n }\n\n updateCustomTextAppearance();\n updateCustomTypeface();\n }\n\n @VisibleForTesting\n int getLayoutResource() {\n int layoutResource;\n switch (type) {\n case FIXED:\n layoutResource = R.layout.bb_bottom_bar_item_fixed;\n break;\n case SHIFTING:\n layoutResource = R.layout.bb_bottom_bar_item_shifting;\n break;\n case TABLET:\n layoutResource = R.layout.bb_bottom_bar_item_fixed_tablet;\n break;\n default:\n // should never happen\n throw new RuntimeException(\"Unknown BottomBarTab type.\");\n }\n return layoutResource;\n }\n\n private void updateTitle() {\n if (titleView != null) {\n titleView.setText(title);\n }\n }\n\n @SuppressWarnings(\"deprecation\")\n private void updateCustomTextAppearance() {\n if (titleView == null || titleTextAppearanceResId == 0) {\n return;\n }\n\n if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {\n titleView.setTextAppearance(titleTextAppearanceResId);\n } else {\n titleView.setTextAppearance(getContext(), titleTextAppearanceResId);\n }\n\n titleView.setTag(R.id.bb_bottom_bar_appearance_id, titleTextAppearanceResId);\n }\n\n private void updateCustomTypeface() {\n if (titleTypeFace != null && titleView != null) {\n titleView.setTypeface(titleTypeFace);\n }\n }\n\n Type getType() {\n return type;\n }\n\n void setType(Type type) {\n this.type = type;\n }\n\n boolean isTitleless() {\n return isTitleless;\n }\n\n void setIsTitleless(boolean isTitleless) {\n if (isTitleless && getIconResId() == 0) {\n throw new IllegalStateException(\"This tab is supposed to be \" +\n \"icon only, yet it has no icon specified. Index in \" +\n \"container: \" + getIndexInTabContainer());\n }\n\n this.isTitleless = isTitleless;\n }\n\n public ViewGroup getOuterView() {\n return (ViewGroup) getParent();\n }\n\n AppCompatImageView getIconView() {\n return iconView;\n }\n\n int getIconResId() {\n return iconResId;\n }\n\n void setIconResId(int iconResId) {\n this.iconResId = iconResId;\n }\n\n TextView getTitleView() {\n return titleView;\n }\n\n public String getTitle() {\n return title;\n }\n\n public void setTitle(String title) {\n this.title = title;\n updateTitle();\n }\n\n public float getInActiveAlpha() {\n return inActiveAlpha;\n }\n\n public void setInActiveAlpha(float inActiveAlpha) {\n this.inActiveAlpha = inActiveAlpha;\n\n if (!isActive) {\n setAlphas(inActiveAlpha);\n }\n }\n\n public float getActiveAlpha() {\n return activeAlpha;\n }\n\n public void setActiveAlpha(float activeAlpha) {\n this.activeAlpha = activeAlpha;\n\n if (isActive) {\n setAlphas(activeAlpha);\n }\n }\n\n public int getInActiveColor() {\n return inActiveColor;\n }\n\n public void setInActiveColor(int inActiveColor) {\n this.inActiveColor = inActiveColor;\n\n if (!isActive) {\n setColors(inActiveColor);\n }\n }\n\n public int getActiveColor() {\n return activeColor;\n }\n\n public void setActiveColor(int activeIconColor) {\n this.activeColor = activeIconColor;\n\n if (isActive) {\n setColors(activeColor);\n }\n }\n\n public int getBarColorWhenSelected() {\n return barColorWhenSelected;\n }\n\n public void setBarColorWhenSelected(int barColorWhenSelected) {\n this.barColorWhenSelected = barColorWhenSelected;\n }\n\n public int getBadgeBackgroundColor() {\n return badgeBackgroundColor;\n }\n\n public void setBadgeBackgroundColor(int badgeBackgroundColor) {\n this.badgeBackgroundColor = badgeBackgroundColor;\n\n if (badge != null) {\n badge.setColoredCircleBackground(badgeBackgroundColor);\n }\n }\n\n public boolean getBadgeHidesWhenActive() {\n return badgeHidesWhenActive;\n }\n\n public void setBadgeHidesWhenActive(boolean hideWhenActive) {\n this.badgeHidesWhenActive = hideWhenActive;\n }\n\n int getCurrentDisplayedIconColor() {\n Object tag = iconView.getTag(R.id.bb_bottom_bar_color_id);\n\n if (tag instanceof Integer) {\n return (int) tag;\n }\n\n return 0;\n }\n\n int getCurrentDisplayedTitleColor() {\n if (titleView != null) {\n return titleView.getCurrentTextColor();\n }\n\n return 0;\n }\n\n int getCurrentDisplayedTextAppearance() {\n Object tag = titleView.getTag(R.id.bb_bottom_bar_appearance_id);\n\n if (titleView != null && tag instanceof Integer) {\n return (int) tag;\n }\n\n return 0;\n }\n\n public void setBadgeCount(int count) {\n if (count <= 0) {\n if (badge != null) {\n badge.removeFromTab(this);\n badge = null;\n }\n\n return;\n }\n\n if (badge == null) {\n badge = new BottomBarBadge(getContext());\n badge.attachToTab(this, badgeBackgroundColor);\n }\n\n badge.setCount(count);\n\n if (isActive && badgeHidesWhenActive) {\n badge.hide();\n }\n }\n\n public void removeBadge() {\n setBadgeCount(0);\n }\n\n boolean isActive() {\n return isActive;\n }\n\n boolean hasActiveBadge() {\n return badge != null;\n }\n\n int getIndexInTabContainer() {\n return indexInContainer;\n }\n\n void setIndexInContainer(int indexInContainer) {\n this.indexInContainer = indexInContainer;\n }\n\n void setIconTint(int tint) {\n iconView.setColorFilter(tint);\n }\n\n public int getTitleTextAppearance() {\n return titleTextAppearanceResId;\n }\n\n @SuppressWarnings(\"deprecation\")\n void setTitleTextAppearance(int resId) {\n this.titleTextAppearanceResId = resId;\n updateCustomTextAppearance();\n }\n\n public void setTitleTypeface(Typeface typeface) {\n this.titleTypeFace = typeface;\n updateCustomTypeface();\n }\n\n public Typeface getTitleTypeFace() {\n return titleTypeFace;\n }\n\n void select(boolean animate) {\n isActive = true;\n\n if (animate) {\n animateIcon(activeAlpha, ACTIVE_SHIFTING_TITLELESS_ICON_SCALE);\n animateTitle(sixDps, ACTIVE_TITLE_SCALE, activeAlpha);\n animateColors(inActiveColor, activeColor);\n } else {\n setTitleScale(ACTIVE_TITLE_SCALE);\n setTopPadding(sixDps);\n setIconScale(ACTIVE_SHIFTING_TITLELESS_ICON_SCALE);\n setColors(activeColor);\n setAlphas(activeAlpha);\n }\n\n setSelected(true);\n\n if (badge != null && badgeHidesWhenActive) {\n badge.hide();\n }\n }\n\n void deselect(boolean animate) {\n isActive = false;\n\n boolean isShifting = type == Type.SHIFTING;\n\n float titleScale = isShifting ? 0 : INACTIVE_FIXED_TITLE_SCALE;\n int iconPaddingTop = isShifting ? sixteenDps : eightDps;\n\n if (animate) {\n animateTitle(iconPaddingTop, titleScale, inActiveAlpha);\n animateIcon(inActiveAlpha, INACTIVE_SHIFTING_TITLELESS_ICON_SCALE);\n animateColors(activeColor, inActiveColor);\n } else {\n setTitleScale(titleScale);\n setTopPadding(iconPaddingTop);\n setIconScale(INACTIVE_SHIFTING_TITLELESS_ICON_SCALE);\n setColors(inActiveColor);\n setAlphas(inActiveAlpha);\n }\n\n setSelected(false);\n\n if (!isShifting && badge != null && !badge.isVisible()) {\n badge.show();\n }\n }\n\n private void animateColors(int previousColor, int color) {\n ValueAnimator anim = new ValueAnimator();\n anim.setIntValues(previousColor, color);\n anim.setEvaluator(new ArgbEvaluator());\n anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {\n @Override\n public void onAnimationUpdate(ValueAnimator valueAnimator) {\n setColors((Integer) valueAnimator.getAnimatedValue());\n }\n });\n\n anim.setDuration(150);\n anim.start();\n }\n\n private void setColors(int color) {\n if (iconView != null) {\n iconView.setColorFilter(color);\n iconView.setTag(R.id.bb_bottom_bar_color_id, color);\n }\n\n if (titleView != null) {\n titleView.setTextColor(color);\n }\n }\n\n private void setAlphas(float alpha) {\n if (iconView != null) {\n ViewCompat.setAlpha(iconView, alpha);\n }\n\n if (titleView != null) {\n ViewCompat.setAlpha(titleView, alpha);\n }\n }\n\n void updateWidth(float endWidth, boolean animated) {\n if (!animated) {\n getLayoutParams().width = (int) endWidth;\n\n if (!isActive && badge != null) {\n badge.adjustPositionAndSize(this);\n badge.show();\n }\n return;\n }\n\n float start = getWidth();\n\n ValueAnimator animator = ValueAnimator.ofFloat(start, endWidth);\n animator.setDuration(150);\n animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {\n @Override\n public void onAnimationUpdate(ValueAnimator animator) {\n ViewGroup.LayoutParams params = getLayoutParams();\n if (params == null) return;\n\n params.width = Math.round((float) animator.getAnimatedValue());\n setLayoutParams(params);\n }\n });\n\n // Workaround to avoid using faulty onAnimationEnd() listener\n postDelayed(new Runnable() {\n @Override\n public void run() {\n if (!isActive && badge != null) {\n clearAnimation();\n badge.adjustPositionAndSize(BottomBarTab.this);\n badge.show();\n }\n }\n }, animator.getDuration());\n\n animator.start();\n }\n\n private void updateBadgePosition() {\n if (badge != null) {\n badge.adjustPositionAndSize(this);\n }\n }\n\n private void setTopPaddingAnimated(int start, int end) {\n if (type == Type.TABLET || isTitleless) {\n return;\n }\n\n ValueAnimator paddingAnimator = ValueAnimator.ofInt(start, end);\n paddingAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {\n @Override\n public void onAnimationUpdate(ValueAnimator animation) {\n iconView.setPadding(\n iconView.getPaddingLeft(),\n (Integer) animation.getAnimatedValue(),\n iconView.getPaddingRight(),\n iconView.getPaddingBottom()\n );\n }\n });\n\n paddingAnimator.setDuration(ANIMATION_DURATION);\n paddingAnimator.start();\n }\n\n private void animateTitle(int padding, float scale, float alpha) {\n if (type == Type.TABLET && isTitleless) {\n return;\n }\n\n setTopPaddingAnimated(iconView.getPaddingTop(), padding);\n\n ViewPropertyAnimatorCompat titleAnimator = ViewCompat.animate(titleView)\n .setDuration(ANIMATION_DURATION)\n .scaleX(scale)\n .scaleY(scale);\n titleAnimator.alpha(alpha);\n titleAnimator.start();\n }\n\n private void animateIconScale(float scale) {\n ViewCompat.animate(iconView)\n .setDuration(ANIMATION_DURATION)\n .scaleX(scale)\n .scaleY(scale)\n .start();\n }\n\n private void animateIcon(float alpha, float scale) {\n ViewCompat.animate(iconView)\n .setDuration(ANIMATION_DURATION)\n .alpha(alpha)\n .start();\n\n if (isTitleless && type == Type.SHIFTING) {\n animateIconScale(scale);\n }\n }\n\n private void setTopPadding(int topPadding) {\n if (type == Type.TABLET || isTitleless) {\n return;\n }\n\n iconView.setPadding(\n iconView.getPaddingLeft(),\n topPadding,\n iconView.getPaddingRight(),\n iconView.getPaddingBottom()\n );\n }\n\n private void setTitleScale(float scale) {\n if (type == Type.TABLET || isTitleless) {\n return;\n }\n\n ViewCompat.setScaleX(titleView, scale);\n ViewCompat.setScaleY(titleView, scale);\n }\n\n private void setIconScale(float scale) {\n if (isTitleless && type == Type.SHIFTING) {\n ViewCompat.setScaleX(iconView, scale);\n ViewCompat.setScaleY(iconView, scale);\n }\n }\n\n @Override\n public Parcelable onSaveInstanceState() {\n if (badge != null) {\n Bundle bundle = saveState();\n bundle.putParcelable(\"superstate\", super.onSaveInstanceState());\n\n return bundle;\n }\n\n return super.onSaveInstanceState();\n }\n\n @VisibleForTesting\n Bundle saveState() {\n Bundle outState = new Bundle();\n outState.putInt(STATE_BADGE_COUNT + getIndexInTabContainer(), badge.getCount());\n\n return outState;\n }\n\n @Override\n public void onRestoreInstanceState(Parcelable state) {\n if (state instanceof Bundle) {\n Bundle bundle = (Bundle) state;\n restoreState(bundle);\n\n state = bundle.getParcelable(\"superstate\");\n }\n\n super.onRestoreInstanceState(state);\n }\n\n @VisibleForTesting\n void restoreState(Bundle savedInstanceState) {\n int previousBadgeCount = savedInstanceState.getInt(STATE_BADGE_COUNT + getIndexInTabContainer());\n setBadgeCount(previousBadgeCount);\n }\n\n enum Type {\n FIXED, SHIFTING, TABLET\n }\n\n public static class Config {\n private final float inActiveTabAlpha;\n private final float activeTabAlpha;\n private final int inActiveTabColor;\n private final int activeTabColor;\n private final int barColorWhenSelected;\n private final int badgeBackgroundColor;\n private final int titleTextAppearance;\n private final Typeface titleTypeFace;\n private boolean badgeHidesWhenSelected = true;\n\n private Config(Builder builder) {\n this.inActiveTabAlpha = builder.inActiveTabAlpha;\n this.activeTabAlpha = builder.activeTabAlpha;\n this.inActiveTabColor = builder.inActiveTabColor;\n this.activeTabColor = builder.activeTabColor;\n this.barColorWhenSelected = builder.barColorWhenSelected;\n this.badgeBackgroundColor = builder.badgeBackgroundColor;\n this.badgeHidesWhenSelected = builder.hidesBadgeWhenSelected;\n this.titleTextAppearance = builder.titleTextAppearance;\n this.titleTypeFace = builder.titleTypeFace;\n }\n\n public static class Builder {\n private float inActiveTabAlpha;\n private float activeTabAlpha;\n private int inActiveTabColor;\n private int activeTabColor;\n private int barColorWhenSelected;\n private int badgeBackgroundColor;\n private boolean hidesBadgeWhenSelected = true;\n private int titleTextAppearance;\n private Typeface titleTypeFace;\n\n public Builder inActiveTabAlpha(float alpha) {\n this.inActiveTabAlpha = alpha;\n return this;\n }\n\n public Builder activeTabAlpha(float alpha) {\n this.activeTabAlpha = alpha;\n return this;\n }\n\n public Builder inActiveTabColor(@ColorInt int color) {\n this.inActiveTabColor = color;\n return this;\n }\n\n public Builder activeTabColor(@ColorInt int color) {\n this.activeTabColor = color;\n return this;\n }\n\n public Builder barColorWhenSelected(@ColorInt int color) {\n this.barColorWhenSelected = color;\n return this;\n }\n\n public Builder badgeBackgroundColor(@ColorInt int color) {\n this.badgeBackgroundColor = color;\n return this;\n }\n\n public Builder hideBadgeWhenSelected(boolean hide) {\n this.hidesBadgeWhenSelected = hide;\n return this;\n }\n\n public Builder titleTextAppearance(int titleTextAppearance) {\n this.titleTextAppearance = titleTextAppearance;\n return this;\n }\n\n public Builder titleTypeFace(Typeface titleTypeFace) {\n this.titleTypeFace = titleTypeFace;\n return this;\n }\n\n public Config build() {\n return new Config(this);\n }\n }\n }\n}\n"
},
{
"path": "bottom-bar/src/main/java/com/roughike/bottombar/BottomNavigationBehavior.java",
"content": "package com.roughike.bottombar;\n\nimport android.os.Build;\nimport android.support.annotation.NonNull;\nimport android.support.design.widget.CoordinatorLayout;\nimport android.support.design.widget.Snackbar;\nimport android.support.v4.view.ViewCompat;\nimport android.support.v4.view.ViewPropertyAnimatorCompat;\nimport android.support.v4.view.animation.LinearOutSlowInInterpolator;\nimport android.view.View;\nimport android.view.ViewGroup;\nimport android.view.animation.Interpolator;\n\n/**\n * Created by Nikola D. on 3/15/2016.\n *\n * Credit goes to Nikola Despotoski:\n * https://github.com/NikolaDespotoski\n */\nclass BottomNavigationBehavior \n * This listener is fired when the current {@link BottomBar} is about to change. This gives\n * an opportunity to interrupt the {@link BottomBarTab} change.\n *\n * @param oldTabId the currently visible {@link BottomBarTab}\n * @param newTabId the {@link BottomBarTab} that will be switched to\n * @return true if you want to override/stop the tab change, false to continue as normal\n */\n boolean shouldInterceptTabSelection(@IdRes int oldTabId, @IdRes int newTabId);\n}\n"
},
{
"path": "bottom-bar/src/main/java/com/roughike/bottombar/VerticalScrollingBehavior.java",
"content": "package com.roughike.bottombar;\n\nimport android.content.Context;\nimport android.os.Parcelable;\nimport android.support.annotation.IntDef;\nimport android.support.annotation.NonNull;\nimport android.support.design.widget.CoordinatorLayout;\nimport android.support.v4.view.WindowInsetsCompat;\nimport android.util.AttributeSet;\nimport android.view.View;\n\nimport java.lang.annotation.Retention;\nimport java.lang.annotation.RetentionPolicy;\n\n/**\n * Created by Nikola D. on 11/22/2015.\n *\n * Credit goes to Nikola Despotoski:\n * https://github.com/NikolaDespotoski\n */\nabstract class VerticalScrollingBehavior\n
\n \n
\n \n
\n