android - 删除底部工作表对话框 fragment 中的白色背景

Question

如何删除底部工作表对话框 fragment 中的白色背景？

我已经尝试了 this 中的答案或将布局xml中的背景设置为透明，但仍然得到这个结果



这是我的代码

public class BottomSheetFragment extends BottomSheetDialogFragment {

private Record record;

private MainFragment fragment;

public static BottomSheetFragment getInstance() {
    return new BottomSheetFragment ();
}

public BottomSheetFragment setRecord(Record record) {
    this.record = record;
    return this;
}

public BottomSheetFragment setFragment(MainFragment fragment) {
    this.fragment = fragment;
    return this;
}

@TargetApi(Build.VERSION_CODES.O)
@Override
public void onViewCreated(View view, @Nullable final Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);
    getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT);
    setStyle(DialogFragment.STYLE_NO_FRAME, android.R.style.Theme);

    //Set content
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    return inflater.inflate(R.layout.layout_bottom_sheet, container);
}

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
}
}

layout_bottom_sheet.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/cardView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="60dp"
android:background="@drawable/bg_cardboard">

</FrameLayout>

Answer 1

您需要将透明背景设置为底部工作 TableView 本身。

下面是 Kotlin 的一个例子:

class YourBottomSheetFragment : BaseBottomSheetDialogFragment() {

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val dialog = super.onCreateDialog(savedInstanceState) as BottomSheetDialog
        dialog.setOnShowListener { setupBottomSheet(it) }
        return dialog
    }

    private fun setupBottomSheet(dialogInterface: DialogInterface) {
        val bottomSheetDialog = dialogInterface as BottomSheetDialog
        val bottomSheet = bottomSheetDialog.findViewById<View>(
            com.google.android.material.R.id.design_bottom_sheet)
            ?: return
        bottomSheet.setBackgroundColor(Color.TRANSPARENT)
    }
}