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  3. android.support.design.widget.CoordinatorLayout

Java 类android.support.design.widget.CoordinatorLayout 实例源码

项目：OneTwo    文件：ScrollAwareFABBehavior.java    
@Override
public void onNestedScroll(CoordinatorLayout coordinatorLayout, FloatingActionButton child,
                           View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
    super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed,
            dyUnconsumed);

    if (dyConsumed > 0 && child.getVisibility() == View.VISIBLE) {
        child.hide(new FloatingActionButton.OnVisibilityChangedListener() {
            @Override
            public void onHidden(FloatingActionButton fab) {
                super.onShown(fab);
                fab.setVisibility(View.INVISIBLE);
            }
        });
    } else if (dyConsumed < 0){
        child.show();
    }
}
项目：GitHub    文件：BottomNavBarFabBehaviour.java    
private float[] getFabTranslationYForBottomNavigationBar(CoordinatorLayout parent,
                                                         FloatingActionButton fab) {
    float minOffset = 0;
    float viewHeight = 0;
    final List<View> dependencies = parent.getDependencies(fab);
    for (int i = 0, z = dependencies.size(); i < z; i++) {
        final View view = dependencies.get(i);
        if (view instanceof BottomNavigationBar) {
            viewHeight = view.getHeight();
            minOffset = Math.min(minOffset,
                    ViewCompat.getTranslationY(view) - viewHeight);
        }
    }
    float[] returnValues = {minOffset, viewHeight};

    return returnValues;
}
项目：Huahui-Android    文件：FloatingActionButtonScrollBehavior.java    
@Override
public void onNestedScroll(final CoordinatorLayout coordinatorLayout, final
FloatingActionButton child, final View target, final int dxConsumed, final int dyConsumed,
                           final int dxUnconsumed, final int dyUnconsumed) {
    super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed,
            dxUnconsumed, dyUnconsumed);
    if (dyConsumed > 0 && child.getVisibility() == View.VISIBLE) {
        /** design lib 升级到 25.1.0 导致 child.hide() 效果失效，法克哟
         *  http://stackoverflow.com/questions/41761736/android-design-library-25-1-0-causes-floatingactionbutton-behavior-to-stop-worki
         */
        child.hide(new FloatingActionButton.OnVisibilityChangedListener() {
            @Override
            public void onHidden(FloatingActionButton fab) {
                super.onHidden(fab);
                fab.setVisibility(View.INVISIBLE);
            }
        });
    } else if (dyConsumed < 0 && child.getVisibility() != View.VISIBLE) {
        child.show();
    }
}
项目：GxIconAndroid    文件：BottomNavigationBehavior.java    
@Override
public void updateSnackbar(CoordinatorLayout parent, View dependency, View child) {
    if (dependency instanceof Snackbar.SnackbarLayout) {
        if (mSnackbarHeight == -1) {
            mSnackbarHeight = dependency.getHeight();
        }

        int targetPadding = child.getMeasuredHeight();

        int shadow = (int) ViewCompat.getElevation(child);
        ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) dependency.getLayoutParams();
        layoutParams.bottomMargin = targetPadding - shadow;
        child.bringToFront();
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            child.getParent().requestLayout();
            ((View) child.getParent()).invalidate();
        }

    }
}
项目：Expert-Android-Programming    文件：BaseBehavior.java    
private void init(final CoordinatorLayout coordinatorLayout, final AppBarLayout child) {
  // disable dragCallback by default
  if (mDragCallbackListener == null) {
    mDragCallbackListener = new DragCallback() {

      @Override
      public boolean canDrag(AppBarLayout appBarLayout) {
        return false;
      }
    };
    setDragCallback(mDragCallbackListener);
  }

  // dispatch init event
  Utils.log("onInit");
  mCoordinatorLayout = coordinatorLayout;
  onInit(coordinatorLayout, child);
}
项目：OSchina_resources_android    文件：FloatingAutoHideDownBehavior.java    
@Override
    public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, View child, View target, int dx, int dy, int[] consumed) {
        super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed);

//        if (!mIsScrollToBottom) {
//            float mPreTranslationY = dy + child.getTranslationY();
//            if (mPreTranslationY <= 0) {
//                child.setTranslationY(0);
//                mIsAnimatingOut = true;
//            }
//            if (mPreTranslationY >= child.getHeight()) {
//                child.setTranslationY(child.getHeight());
//                mIsAnimatingOut = false;
//            }
//            if (mPreTranslationY > 0 && mPreTranslationY < child.getHeight()) {
//                child.setTranslationY(mPreTranslationY);
//                mIsAnimatingOut = dy > 0;
//            }
//        }
    }
项目：event-me    文件：ImageBehaviour.java    
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, SimpleDraweeView child, View dependency) {
    maybeInitProperties(child, dependency);

    final int maxScrollDistance = (int) (mStartToolbarPosition - getStatusBarHeight());
    float expandedPercentageFactor = dependency.getY() / maxScrollDistance;

    float distanceYToSubtract = ((mStartYPosition - mFinalYPosition)
            * (1f - expandedPercentageFactor)) + (child.getHeight()/2);

    float distanceXToSubtract = ((mStartXPosition - mFinalXPosition)
            * (1f - expandedPercentageFactor)) + (child.getWidth()/2);

    float heightToSubtract = ((mStartHeight - finalHeight) * (1f - expandedPercentageFactor));

    child.setY(mStartYPosition - distanceYToSubtract);
    child.setX(mStartXPosition - distanceXToSubtract);

    int proportionalAvatarSize = (int) (mAvatarMaxSize * (expandedPercentageFactor));

    CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) child.getLayoutParams();
    lp.width = (int) (mStartHeight - heightToSubtract);
    lp.height = (int) (mStartHeight - heightToSubtract);
    child.setLayoutParams(lp);
    return true;
}
项目：Tribe    文件：FlingBehavior.java    
@Override
public boolean onNestedFling(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target,
                             float velocityX, float velocityY, boolean consumed) {
    if (target instanceof RecyclerView && velocityY < 0) {
        Log.d(TAG, "onNestedFling: target is recyclerView");
        final RecyclerView recyclerView = (RecyclerView) target;
        final View firstChild = recyclerView.getChildAt(0);
        final int childAdapterPosition = recyclerView.getChildAdapterPosition(firstChild);
        consumed = childAdapterPosition > TOP_CHILD_FLING_THRESHOLD;
    }

    // prevent fling flickering when going up
    if (target instanceof NestedScrollView && velocityY > 0) {
        consumed = true;
    }

    if (Math.abs(velocityY) < OPTIMAL_FLING_VELOCITY) {
        velocityY = OPTIMAL_FLING_VELOCITY * (velocityY < 0 ? -1 : 1);
    }
    Log.d(TAG, "onNestedFling: velocityY - " + velocityY + ", consumed - " + consumed);

    return super.onNestedFling(coordinatorLayout, child, target, velocityX, velocityY, consumed);
}
项目：GitHub    文件：ScrollAwareFABBehavior.java    
@Override
public void onNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton fab,
                           final View target, final int dxConsumed, final int dyConsumed,
                           final int dxUnconsumed, final int dyUnconsumed) {
    super.onNestedScroll(coordinatorLayout, fab, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
    if (!enabled) return;
    if (dyConsumed > 0 && fab.getVisibility() == View.VISIBLE) {
        // User scrolled down and the FAB is currently visible -> hide the FAB
        fab.hide();
    } else if (dyConsumed < 0 && fab.getVisibility() != View.VISIBLE) {
        // User scrolled up and the FAB is currently not visible -> show the FAB
        fab.postDelayed(new Runnable() {
            @Override
            public void run() {
                fab.show();
            }
        }, 200L);
    }
}
项目：GitHub    文件：BaseBackActivity.java    
@Override
protected void setBaseView(@LayoutRes int layoutId) {
    Slidr.attach(this);
    contentView = LayoutInflater.from(this).inflate(R.layout.activity_back, null);
    setContentView(contentView);
    rootLayout = (CoordinatorLayout) findViewById(R.id.root_layout);
    abl = (AppBarLayout) findViewById(R.id.abl);
    mToolbar = (Toolbar) findViewById(R.id.toolbar);
    flActivityContainer = (FrameLayout) findViewById(R.id.activity_container);
    flActivityContainer.addView(LayoutInflater.from(this).inflate(layoutId, flActivityContainer, false));
    setSupportActionBar(mToolbar);
    getToolBar().setDisplayHomeAsUpEnabled(true);

    BarUtils.setStatusBarColor(this, ContextCompat.getColor(UtilsApp.getInstance(), R.color.colorPrimary), 0);
    BarUtils.addMarginTopEqualStatusBarHeight(rootLayout);
}
项目：OSchina_resources_android    文件：FloatingAutoHideDownBehavior.java    
/**
     * 点击内容栏唤起底部操作区域
     *
     * @param coordinatorLayout 外部CoordinatorLayout
     * @param contentView       滚动区域
     * @param bottomView        滚动时隐藏底部区域
     */
    public static void showBottomLayout(CoordinatorLayout coordinatorLayout, View contentView, final View bottomView) {
        //coordinatorLayout.onStartNestedScroll(contentView, null, ViewCompat.SCROLL_AXIS_VERTICAL);
        //coordinatorLayout.onNestedPreScroll(bottomView, 0, -1, new int[2]);
        //coordinatorLayout.onStopNestedScroll(null);
//        bottomView.animate()
//                .translationY(0)
//                .setInterpolator(INTERPOLATOR)
//                .setDuration(200)
//                .setListener(new AnimatorListenerAdapter() {
//                    @Override
//                    public void onAnimationEnd(Animator animation) {
//                        bottomView.setTranslationY(0);
//                    }
//                });
    }
项目：GitHub    文件：SimpleViewBehavior.java    
/** 初始化数据 */
private void prepare(CoordinatorLayout parent, View child, View dependency) {
    mDependStartX = (int) dependency.getX();
    mDependStartY = (int) dependency.getY();
    mDependStartWidth = dependency.getWidth();
    mDependStartHeight = dependency.getHeight();
    mStartX = (int) child.getX();
    mStartY = (int) child.getY();
    mStartWidth = child.getWidth();
    mStartHeight = child.getHeight();
    mStartAlpha = child.getAlpha();
    mStartRotateX = child.getRotationX();
    mStartRotateY = child.getRotationY();

    //特殊处理y方向变化
    if (mDependTargetY == UNSPECIFIED_INT && dependency instanceof AppBarLayout) {
        mDependTargetY = ((AppBarLayout) dependency).getTotalScrollRange();
    }
    // 背景颜色渐变
    if (child.getBackground() instanceof ColorDrawable) mStartBackgroundColor = ((ColorDrawable) child.getBackground()).getColor();
    // 自定义动画
    if (mAnimationId != 0) {
        mAnimation = AnimationUtils.loadAnimation(child.getContext(), mAnimationId);
        mAnimation.initialize(child.getWidth(), child.getHeight(), parent.getWidth(), parent.getHeight());
    }
    // 兼容5.0以上的沉浸模式
    if (Build.VERSION.SDK_INT > 16 && parent.getFitsSystemWindows() && targetY != UNSPECIFIED_INT) {
        targetY += getStatusBarHeight(parent.getContext());
    }
    isPrepared = true;
}
项目：UCMainViewForBehavior    文件：UCViewTabBehavior.java    
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, View child, View dependency) {

    //UCViewTab要滑动的距离为Header的高度减去TitleView的高度
    float offsetRange = mTitleViewHeight - dependency.getMeasuredHeight();
    //当Header向上滑动mTitleViewHeight高度后，即滑动完成
    int headerOffsetRange = -mTitleViewHeight;

    if(dependency.getTranslationY() == headerOffsetRange) {//Header已经上滑结束
        child.setTranslationY(offsetRange);
    } else if(dependency.getTranslationY() == 0) {//下滑结束，也是初始化的状态
        child.setTranslationY(0);
    } else {
        //UCViewTab与UCViewHeader为同向滑动
        //根据依赖UCViewHeader的滑动比例计算当前UCViewTab应该要滑动的值translationY
        child.setTranslationY(dependency.getTranslationY() / (headerOffsetRange * 1.0f) * offsetRange);
    }
    return false;
}
项目：UcMainPagerDemo-master    文件：HeaderScrollingViewBehavior.java    
@Override
protected void layoutChild(final CoordinatorLayout parent, final View child, final int layoutDirection) {
    final List<View> dependencies = parent.getDependencies(child);
    final View header = findFirstDependency(dependencies);

    if (header != null) {
        final CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) child.getLayoutParams();
        final Rect available = mTempRect1;
        available.set(parent.getPaddingLeft() + lp.leftMargin, header.getBottom() + lp.topMargin,
                parent.getWidth() - parent.getPaddingRight() - lp.rightMargin,
                parent.getHeight() + header.getBottom() - parent.getPaddingBottom() - lp.bottomMargin);

        final Rect out = mTempRect2;
        GravityCompat.apply(resolveGravity(lp.gravity), child.getMeasuredWidth(), child.getMeasuredHeight(), available, out, layoutDirection);

        final int overlap = getOverlapPixelsForOffset(header);

        child.layout(out.left, out.top - overlap, out.right, out.bottom - overlap);
        mVerticalLayoutGap = out.top - header.getBottom();
    } else {
        // If we don't have a dependency, let super handle it
        super.layoutChild(parent, child, layoutDirection);
        mVerticalLayoutGap = 0;
    }
}
项目：anitrend-app    文件：BottomSheetEmoticon.java    
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    Dialog mSheet = super.onCreateDialog(savedInstanceState);
    View contentView = View.inflate(getContext(), R.layout.bottom_sheet_emoticons, null);
    mSheet.setContentView(contentView);

    unbinder = ButterKnife.bind(this, mSheet);

    CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) ((View) contentView.getParent()).getLayoutParams();
    CoordinatorLayout.Behavior behavior = params.getBehavior();

    if (behavior != null && behavior instanceof BottomSheetBehavior) {
        bottomSheetBehavior = (BottomSheetBehavior) behavior;
        bottomSheetBehavior.setBottomSheetCallback(mBottomSheetBehaviorCallback);
    }

    onPostCreate(this);
    return mSheet;
}
项目：GxIconAndroid    文件：VerticalScrollingBehavior.java    
@Override
    public void onNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
        if (dyUnconsumed > 0 && mTotalDyUnconsumed < 0) {
            mTotalDyUnconsumed = 0;
            mOverScrollDirection = ScrollDirection.SCROLL_DIRECTION_UP;
        } else if (dyUnconsumed < 0 && mTotalDyUnconsumed > 0) {
            mTotalDyUnconsumed = 0;
            mOverScrollDirection = ScrollDirection.SCROLL_DIRECTION_DOWN;
        }
        mTotalDyUnconsumed += dyUnconsumed;
        onNestedVerticalOverScroll(coordinatorLayout, child, mOverScrollDirection, dyConsumed, mTotalDyUnconsumed);
        // @By_syk
//        Log.d(C.LOG_TAG, "onNestedScroll: " + mTotalDyUnconsumed);
//        if (Math.abs(mTotalDyUnconsumed) > dampLen) {
//            onNestedVerticalOverScroll(coordinatorLayout, child, mOverScrollDirection, dyConsumed, mTotalDyUnconsumed);
//        }
    }
项目：StretchView    文件：TranslationBehavior.java    
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, View child, View dependency) {
    StretchView v = (StretchView) dependency;
    switch (v.getDirection()) {
        case StretchView.BOTTOM:
            child.setTranslationY(Math.min(dependency.getY() - parent.getHeight(), 0));
            return true;
        case StretchView.LEFT:
            child.setTranslationX(Math.max(dependency.getX(), 0));
            return true;
        case StretchView.RIGHT:
            child.setTranslationX(Math.min(dependency.getX() - parent.getWidth(), 0));
            return true;
    }
    return false;
}
项目：diycode    文件：ScaleDownShowBehavior.java    
@Override
public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout,
                                   FloatingActionButton child, View directTargetChild,
                                   View target, int nestedScrollAxes) {
    if (nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL){
        return true;
    }
    return super.onStartNestedScroll(coordinatorLayout, child, directTargetChild,
            target, nestedScrollAxes);
}
项目：Paper-Launcher    文件：BottomSheetBehaviorV2.java    
@Override
public boolean onTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
    if (!child.isShown()) {
        return false;
    }
    int action = MotionEventCompat.getActionMasked(event);
    if (mState == STATE_DRAGGING && action == MotionEvent.ACTION_DOWN) {
        return true;
    }
    mViewDragHelper.processTouchEvent(event);
    // Record the velocity
    if (action == MotionEvent.ACTION_DOWN) {
        reset();
    }
    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(event);
    // The ViewDragHelper tries to capture only the top-most View. We have to explicitly tell it
    // to capture the bottom sheet in case it is not captured and the touch slop is passed.
    if (action == MotionEvent.ACTION_MOVE && !mIgnoreEvents) {
        if (Math.abs(mInitialY - event.getY()) > mViewDragHelper.getTouchSlop()) {
            mViewDragHelper.captureChildView(child, event.getPointerId(event.getActionIndex()));
        }
    }
    return !mIgnoreEvents;
}
项目：MyAnimeViewer    文件：EpisodesFragment.java    
@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    // We have a menu item to show in action bar.
    setHasOptionsMenu(true);

    AppCompatActivity activity = (AppCompatActivity) getActivity();
    if (activity != null) {
        mCoordinatorLayout = (CoordinatorLayout) getActivity().findViewById(R.id.coordinator_layout);
        //setupRevealBackground(savedInstanceState);
        if (mPrefs == null)
            mPrefs = PreferenceManager.getDefaultSharedPreferences(activity);
        mHandler = new Handler();
        mParser = Parser.getExistingInstance(mPrefs.getInt(Constants.KEY_ANIME_SOURCE, Constants.DEFAULT_ANIME_SOURCE));
        mIsGrid = mPrefs.getBoolean(Constants.KEY_SHOW_CATALOG_AS_GRID, true);
        mGridColumnCount = mPrefs.getInt(Constants.KEY_GRID_COLUMN_COUNT, getResources().getInteger(R.integer.grid_num_cols));
        mListColumnCount = mPrefs.getInt(Constants.KEY_LIST_COLUMN_COUNT, getResources().getInteger(R.integer.list_num_cols));

        mLayoutManager = new GridLayoutManager(getActivity(), mIsGrid ? mGridColumnCount : mListColumnCount);
        mRecyclerView.setLayoutManager(mLayoutManager);

        // Create an empty adapter we will use to display the loaded data.
        mAdapter = new EpisodeRecyclerAdapter(getActivity(), itemClickListener);

        mRecyclerView.setAdapter(mAdapter);
    }

    //Restore previous state
    if (savedInstanceState == null) {
        // Prepare the loader.  Either re-connect with an existing one,
        // or start a new one.
        getLoaderManager().initLoader(0, null, this);
    }
}
项目：MyAnimeViewer    文件：ControllableAppBarLayout.java    
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    if (mBehavior == null) {
        mBehavior = (Behavior) ((CoordinatorLayout.LayoutParams) getLayoutParams()).getBehavior();
    }
}
项目：GitHub    文件：BottomVerticalScrollBehavior.java    
private Snackbar.SnackbarLayout getSnackBarInstance(CoordinatorLayout parent, V child) {
    final List<View> dependencies = parent.getDependencies(child);
    for (int i = 0, z = dependencies.size(); i < z; i++) {
        final View view = dependencies.get(i);
        if (view instanceof Snackbar.SnackbarLayout) {
            return (Snackbar.SnackbarLayout) view;
        }
    }
    return null;
}
项目：OSchina_resources_android    文件：FloatingAutoHideDownBehavior.java    
@Override
public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, View child, View target) {
    super.onStopNestedScroll(coordinatorLayout, child, target);

    if (child.getTranslationY() == 0 || child.getTranslationY() == child.getHeight()) return;

    if (mIsAnimatingOut) {
        animateOut(child);
    } else {
        animateIn(child);
    }

}
项目：UcMainPagerDemo-master    文件：UcNewsTitleBehavior.java    
@Override
public boolean onLayoutChild(CoordinatorLayout parent, View child, int layoutDirection) {
    // FIXME: 16/7/27 不知道为啥在XML设置-45dip,解析出来的topMargin少了1个px,所以这里用代码设置一遍
    ((CoordinatorLayout.LayoutParams) child.getLayoutParams()).topMargin = -getTitleHeight();
    parent.onLayoutChild(child, layoutDirection);
    if (BuildConfig.DEBUG) {
        Log.d(TAG, "layoutChild:top" + child.getTop() + ",height" + child.getHeight());
    }
    return true;
}
项目：Aequorea    文件：NestedScrollAppBarLayout.java    
@Override
public boolean onStartNestedScroll(CoordinatorLayout parent, AppBarLayout child, View directTargetChild, View target, int nestedScrollAxes, int type) {
    if (super.onStartNestedScroll(parent, child, directTargetChild, target, nestedScrollAxes, type)) {
        bindChild(child);
        mOriginTop = child.getY();
        mAppBarLayout.stopScrollAnimation();
        return true;
    } else {
        return false;
    }
}
项目：CoordinatorLayoutExample-master    文件：UcNewsHeaderPagerBehavior.java    
/**
 * @param duration open animation duration
 */
public void openPager(int duration) {
    View child = mChild.get();
    CoordinatorLayout parent = mParent.get();
    if (isClosed() && child != null) {
        if (mFlingRunnable != null) {
            child.removeCallbacks(mFlingRunnable);
            mFlingRunnable = null;
        }
        mFlingRunnable = new FlingRunnable(parent, child);
        mFlingRunnable.scrollToOpen(duration);
    }
}
项目：GitHub    文件：BottomNavBarFabBehaviour.java    
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, FloatingActionButton child, View dependency) {
    if (isDependent(dependency)) {
        updateFabTranslationForBottomNavigationBar(parent, child, dependency);
        return false;
    }

    return super.onDependentViewChanged(parent, child, dependency);
}
项目：GitHub    文件：BottomNavBarFabBehaviour.java    
@Override
public void onDependentViewRemoved(CoordinatorLayout parent, FloatingActionButton child,
                                   View dependency) {
    if (isDependent(dependency)) {
        updateFabTranslationForBottomNavigationBar(parent, child, dependency);
    }
}
项目：SmoothRefreshLayout    文件：QuickConfigAppBarUtil.java    
@Override
public void onDetached(SmoothRefreshLayout layout) {
    layout.setOnChildNotYetInEdgeCannotMoveFooterCallBack(null);
    layout.setOnChildNotYetInEdgeCannotMoveHeaderCallBack(null);
    CoordinatorLayout coordinatorLayout = findCoordinatorLayout(layout);
    if (coordinatorLayout == null)
        return;
    AppBarLayout appBarLayout = findAppBarLayout(coordinatorLayout);
    if (appBarLayout == null)
        return;
    appBarLayout.removeOnOffsetChangedListener(this);
}
项目：CoordinatorLayoutExample-master    文件：ScaleDownShowBehavior.java    
@Override
public void onNestedScroll(CoordinatorLayout coordinatorLayout, FloatingActionButton child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
    if ((dyConsumed > 0 || dyUnconsumed > 0) && !isAnimatingOut && child.getVisibility() == View.VISIBLE) {//往下滑
        AnimatorUtil.scaleHide(child, viewPropertyAnimatorListener);
        if (mOnStateChangedListener != null) {
            mOnStateChangedListener.onChanged(false);
        }
    } else if ((dyConsumed < 0 || dyUnconsumed < 0) && child.getVisibility() != View.VISIBLE) {
        AnimatorUtil.scaleShow(child, null);
        if (mOnStateChangedListener != null) {
            mOnStateChangedListener.onChanged(true);
        }
    }
}
项目：RLibrary    文件：StickBehavior.java    
/**
 * 布局child的位置, 和自定义view的套路一样
 */
@Override
public boolean onLayoutChild(CoordinatorLayout parent, V child, int layoutDirection) {
    if (mTargetView != null) {
        ViewCompat.offsetTopAndBottom(mTargetView, lastTop);
        int top = mTargetView.getBottom();// - Math.abs(lastTop);
        child.layout(0, top, child.getMeasuredWidth(), top + child.getMeasuredHeight());
        return true;
    }
    return super.onLayoutChild(parent, child, layoutDirection);
}
项目：Paper-Launcher    文件：BottomSheetBehaviorV2.java    
public boolean onLayoutChildFixed(CoordinatorLayout parent, V child, int layoutDirection) {
    if (ViewCompat.getFitsSystemWindows(parent) && !ViewCompat.getFitsSystemWindows(child)) {
        ViewCompat.setFitsSystemWindows(child, true);
    }
    int savedTop = child.getTop();
    // First let the parent lay it out
    parent.onLayoutChild(child, layoutDirection);
    // Offset the bottom sheet
    mParentHeight = parent.getHeight();
    int peekHeight;
    if (mPeekHeightAuto) {
        if (mPeekHeightMin == 0) {
            mPeekHeightMin = parent.getResources().getDimensionPixelSize(
                    android.support.design.R.dimen.design_bottom_sheet_peek_height_min);
        }
        peekHeight = Math.max(mPeekHeightMin, mParentHeight - parent.getWidth() * 9 / 16);
    } else {
        peekHeight = mPeekHeight;
    }
    mMinOffset = Math.max(0, mParentHeight - child.getHeight());
    mMaxOffset = Math.max(mParentHeight - peekHeight, mMinOffset);
    if (mState == STATE_EXPANDED) {
        ViewCompat.offsetTopAndBottom(child, mMinOffset);
    } else if (mHideable && mState == STATE_HIDDEN) {
        ViewCompat.offsetTopAndBottom(child, mParentHeight);
    } else if (mState == STATE_COLLAPSED) {
        ViewCompat.offsetTopAndBottom(child, mMaxOffset);
    } else if (mState == STATE_DRAGGING || mState == STATE_SETTLING) {
        ViewCompat.offsetTopAndBottom(child, savedTop - child.getTop());
    }
    if (mViewDragHelper == null) {
        mViewDragHelper = ViewDragHelper.create(parent, mDragCallback);
    }
    mViewRef = new WeakReference<>(child);
    mNestedScrollingChildRef = new WeakReference<>(findScrollingChild(child));
    return true;
}
项目：Android-Gank-Share    文件：BackToTopButtonBehavior.java    
@Override
public void onNestedScroll(CoordinatorLayout coordinatorLayout, FloatingActionButton child,
                           View target, int dxConsumed,
                           int dyConsumed, int dxUnconsumed,
                           int dyUnconsumed) {
    if(dyConsumed > 0 && child.getVisibility() == View.INVISIBLE){
        child.show();
    }else if(dyConsumed < 0){
        //官方的hide方法会设置为gone,而这个方法在view为gone时不会调用
        child.setVisibility(View.INVISIBLE);
    }
}
项目：Mix    文件：FooterBehavior.java    
@Override
public void onNestedScroll(CoordinatorLayout coordinatorLayout, FloatingActionButton child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
    if ((dyConsumed > 0 || dyUnconsumed > 0) && !isAnimatingOut && child.getVisibility() == View.VISIBLE) {
        AnimatorUtil.scaleHide(child, listener);
        if (mOnStateChangedListener != null) {
            mOnStateChangedListener.onChanged(false);
        }
    } else if ((dyConsumed < 0 || dyUnconsumed < 0) && child.getVisibility() != View.VISIBLE) {
        AnimatorUtil.scaleShow(child, null);
        if (mOnStateChangedListener != null) {
            mOnStateChangedListener.onChanged(true);
        }
    }
}
项目：Ency    文件：ScrollAwareFABBehavior.java    
@Override
public boolean onStartNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child,
                                   final View directTargetChild, final View target, final int nestedScrollAxes) {
    // Ensure we react to vertical scrolling
    return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL
            || super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
}
项目：JD-Test    文件：BottomNavigationBar.java    
public void setFab(FloatingActionButton fab) {
    ViewGroup.LayoutParams layoutParams = fab.getLayoutParams();
    if (layoutParams != null && layoutParams instanceof CoordinatorLayout.LayoutParams) {
        CoordinatorLayout.LayoutParams coLayoutParams = (CoordinatorLayout.LayoutParams) layoutParams;
        BottomNavBarFabBehaviour bottomNavBarFabBehaviour = new BottomNavBarFabBehaviour();
        coLayoutParams.setBehavior(bottomNavBarFabBehaviour);
    }
}
项目：GitHub    文件：MyCommentBehavior.java    
private float getFabTranslationYForSnackbar(CoordinatorLayout parent,
                                            View fab) {
    float minOffset = 0;
    final List<View> dependencies = parent.getDependencies(fab);
    for (int i = 0, z = dependencies.size(); i < z; i++) {
        final View view = dependencies.get(i);
        if (view instanceof Snackbar.SnackbarLayout && parent.doViewsOverlap(fab, view)) {
            minOffset = Math.min(minOffset,
                    ViewCompat.getTranslationY(view) - view.getHeight());
        }
    }

    return minOffset;
}
项目：BottomSheetCoordinatorLayout    文件：BottomSheetCoordinatorLayout.java    
@Override
public boolean onNestedPreFling(CoordinatorLayout coordinatorLayout, DummyView child, View target, float velocityX, float velocityY) {
    BottomSheetCoordinatorLayout sheet = (BottomSheetCoordinatorLayout) coordinatorLayout;
    if (shouldForwardEvent(sheet, velocityY > 0)) {
        return sheet.getBehavior().onNestedPreFling(coordinatorLayout, sheet, target, velocityX, velocityY);
    } else {
        return false;
    }
}
项目：GracefulMovies    文件：ScrollAwareFABBehavior.java    
@Override
public boolean onStartNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child,
                                   final View directTargetChild, final View target, final int nestedScrollAxes) {
    // Ensure we react to vertical scrolling
    return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL
            || super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
}
项目：BehaviorDemo    文件：MainHeaderBehavior.java    
@Override
public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, View child, View directTargetChild, View target, int nestedScrollAxes) {
    if (tabSuspension) {
        return (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0 && !isClosed();
    }
    return (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0;
}