android - Bottomsheet 占据全屏

Question

我试图不让 BottomSheet 填充整个屏幕，而是在展开时在上方留出一些空间。这是我的 onExpand 填充整个屏幕的代码。

bottomSheetBehavior = BottomSheetBehavior.from(bottomLayout);
        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);

        bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
            @Override
            public void onStateChanged(@NonNull View bottomSheet, int newState) {
                switch (newState) {
                    case BottomSheetBehavior.STATE_DRAGGING:
                        Log.i("BottomSheetCallback", "BottomSheetBehavior.STATE_DRAGGING");
                        break;
                    case BottomSheetBehavior.STATE_SETTLING:
                        Log.i("BottomSheetCallback", "BottomSheetBehavior.STATE_SETTLING");
                        break;
                    case BottomSheetBehavior.STATE_EXPANDED:
                        Log.i("BottomSheetCallback", "BottomSheetBehavior.STATE_EXPANDED");
                        break;
                    case BottomSheetBehavior.STATE_COLLAPSED:
                        Log.i("BottomSheetCallback", "BottomSheetBehavior.STATE_COLLAPSED");
                        break;
                    case BottomSheetBehavior.STATE_HIDDEN:
                        Log.i("BottomSheetCallback", "BottomSheetBehavior.STATE_HIDDEN");
                        break;

                }
            }

            @Override
            public void onSlide(@NonNull View bottomSheet, float slideOffset) {
                Log.i("BottomSheetCallback", "slideOffset: " + slideOffset);
                boolean drawer = getSupportFragmentManager().getBackStackEntryCount() == 0;
                ObjectAnimator.ofFloat(drawerArrow, "progress", drawer ? 0 : 1).start();
            }
        });


        bottomLayout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Log.v(TAG, "ONCLickListner");

                if (bottomSheetBehavior.getState() == BottomSheetBehavior.STATE_COLLAPSED) {
                    Log.v(TAG,"state expand");
                    bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                } else {
                    Log.v(TAG,"state collapse");
                    bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                }

            }
        });

能否请您解决我的问题并提出一种方法，使 Bottom Sheet 不占据整个屏幕，而是在展开时在上方留出一些空间。谢谢

Answer 1

一个简单的技巧就完成了。我现在无法阻止 Bottom Sheet 全屏显示，所以我有一个对我所需大小透明的 View ，通过将它添加到 bottomSheetLayout 解决了我的问题

<View
    android:layout_width="match_parent"
    android:id="@+id/spaccer"
    android:layout_height="28dp"
    android:background="@android:color/transparent"
    android:alpha="0.6"/>