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Custom behavior to prevent v26 AppBar support from bouncing when scrolling
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public class NoBounceBehavior extends AppBarLayout.Behavior { | |
private static final int TYPE_FLING = 1; | |
... | |
@Override | |
public boolean onInterceptTouchEvent(CoordinatorLayout parent, AppBarLayout child, MotionEvent ev) { | |
if (isFlinging) { | |
shouldBlockNestedScroll = true; | |
} | |
return super.onInterceptTouchEvent(parent, child, ev); | |
} | |
@Override | |
public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target, int dx, int dy, int[] consumed, int type) { | |
if (type == TYPE_FLING) { | |
isFlinging = true; | |
} | |
if (!shouldBlockNestedScroll) { | |
super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type); | |
} | |
} | |
@Override | |
public void onNestedScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int type) { | |
if (!shouldBlockNestedScroll) { | |
super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, type); | |
} | |
} | |
@Override | |
public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, AppBarLayout abl, View target, int type) { | |
super.onStopNestedScroll(coordinatorLayout, abl, target, type); | |
isFlinging = false; | |
shouldBlockNestedScroll = false; | |
} | |
} |
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