窥视屏幕上方的底片

Question

我要实现底页行为：如图所示，窥视从STATE_EXPANDED屏幕上方滑出。我该如何实现？

Answer 1

您可以在听BottomSheetBehavior的同时尝试对BottomSheet布局进行一些更改：

BottomSheetBehavior behavior = BottomSheetBehavior.from(mBottomSheetBehavior);  
behavior.setBottomSheetCallback(new BottomSheetCallback() {  
   @Override  
   public void onStateChanged(@NonNull View bottomSheet, int newState) {  
    // Here you can implement your logic with layour change
   }  

  @Override  
  public void onSlide(@NonNull View bottomSheet, float slideOffset) {  
     // Here you can implement your logic with layour change
  }  
});