打开Bottom Sheet时ActionBar中书签按钮无法点击问题求助

问题原因 #

BottomSheetDialog的默认Window会覆盖整个屏幕（包括ActionBar所在区域），并且会拦截所有外部触摸事件——哪怕你设置了setDimAmount(0.01f)，底层的Window拦截逻辑依然存在，导致ActionBar上的书签按钮无法响应点击。

解决方案 #

方案1：修改BottomSheetDialog的Window属性 #

在showCorrectWrongBottomSheetDialog方法中，给BottomSheetDialog的Window添加FLAG_NOT_TOUCH_MODAL标记，允许外部区域的触摸事件穿透：

public static void showCorrectWrongBottomSheetDialog(final FragmentActivity activity, String answer, String explanation, boolean correct, String subjectType, final CallBackListener callBackListener) {
    try {
        final BottomSheetDialog dialog = new BottomSheetDialog(activity);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.getWindow().setDimAmount(0.01f);
        
        // 添加以下两行代码解决触摸拦截问题
        dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);
        dialog.getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        
        dialog.setContentView(R.layout.correct_wrong_bottom_sheet_dialog);
        dialog.setCancelable(false);
        ConstraintLayout bottom_layout = dialog.findViewById(R.id.bottom_layout);
        FButton continue_button = dialog.findViewById(R.id.continue_button);
        TextView textview = dialog.findViewById(R.id.textview);

        String finalExplanation;
        AppCompatImageView imageView = dialog.findViewById(R.id.image);

        // ... 原有代码逻辑 ...
    } catch (Exception e) {
        e.printStackTrace();
    }
}

如果需要让BottomSheet完全避开ActionBar区域，可以额外添加Window位置偏移：

// 在setContentView之后添加
WindowManager.LayoutParams params = dialog.getWindow().getAttributes();
params.gravity = Gravity.BOTTOM;
params.y = getActionBarHeight(activity); // 偏移ActionBar高度的距离
dialog.getWindow().setAttributes(params);

辅助方法：获取ActionBar高度

private static int getActionBarHeight(FragmentActivity activity) {
    TypedValue tv = new TypedValue();
    if (activity.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
        return TypedValue.complexToDimensionPixelSize(tv.data, activity.getResources().getDisplayMetrics());
    }
    return 0;
}

方案2：改用BottomSheetDialogFragment #

如果直接修改Window属性效果不佳，建议改用BottomSheetDialogFragment，它的Window管理更规范，同样可以通过重写onCreateDialog设置穿透标记：

public class CorrectWrongBottomSheetFragment extends BottomSheetDialogFragment {

    @NonNull
    @Override
    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
        BottomSheetDialog dialog = (BottomSheetDialog) super.onCreateDialog(savedInstanceState);
        // 允许外部触摸穿透
        dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);
        dialog.getWindow().setDimAmount(0.01f);
        return dialog;
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.correct_wrong_bottom_sheet_dialog, container, false);
        // 初始化按钮、文本等控件逻辑
        return view;
    }
}

在Fragment中调用弹出：

CorrectWrongBottomSheetFragment bottomSheet = new CorrectWrongBottomSheetFragment();
bottomSheet.show(getActivity().getSupportFragmentManager(), "CorrectWrongBottomSheet");

内容的提问来源于stack exchange，提问作者Priyanshu