BottomSheetBehavior不可拖动,如果我不设置peekHeight
问题描述:
在我的应用程序,我有一个底部工作表和一个按钮,使其崩溃/展开。BottomSheetBehavior不可拖动,如果我不设置peekHeight
如果未设置peekHeight
,底部工作表不可拖动且不会折叠,它始终可见。
下面是代码:
View bottomSheet = findViewById(R.id.bottom_sheet1);
mBottomSheetBehavior1 = BottomSheetBehavior.from(bottomSheet);
mBottomSheetBehavior1.setPeekHeight(0); //IF I OMIT THIS, IT DOES NOT WORK
mButton1 = (Button) findViewById(R.id.button_1);
mButton1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(mBottomSheetBehavior1.getState() != BottomSheetBehavior.STATE_EXPANDED) {
mBottomSheetBehavior1.setState(BottomSheetBehavior.STATE_EXPANDED);
mButton1.setText("Collapse 1");
}
else {
mBottomSheetBehavior1.setState(BottomSheetBehavior.STATE_COLLAPSED);
mButton1.setText("Expand 1");
}
}
});
有什么不对?
答
默认情况下,BottomSheetBehavior
是而不是hideable。
你必须明确地告诉,你想这种行为是可隐藏:
bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
bottomSheetBehavior.setHideable(true);