BottomSheetDialogFragment 的圆角不适用于 API <21

Question

我正在使用此解决方案来圆角对话框中的圆角，BottomSheetDialogFragment它在 API 21 及更高版本中运行良好

但是在 Api < 21 中，它删除了背景并且圆角背景消失了。 如何在 API < 21 中使背景四舍五入？如果无法更改背景，请帮我更改背景颜色。

Answer 1

Morteza 我通过以下代码制作了使BottomSheetDialog Fragment对话框圆角的代码，并且我也在KitKat版本移动版中对其进行了测试。

底部工作表对话框类代码

public class MyBottomSheetDialog extends BottomSheetDialogFragment {

String string;

static MyBottomSheetDialog newInstance(String string) {
    MyBottomSheetDialog f = new MyBottomSheetDialog();
    Bundle args = new Bundle();
    args.putString("string", string);
    f.setArguments(args);
    return f;
}

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    string = getArguments().getString("string");
    //bottom sheet round corners can be obtained but the while background appears to remove that we need to add this.
    setStyle(DialogFragment.STYLE_NO_FRAME,0);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.bottom_sheet_modal, container, false);
    TextView tv = (TextView) v.findViewById(R.id.text);

    //dialog cancel when touches outside (Optional)
    getDialog().setCanceledOnTouchOutside(true);
    return v;
}}

bottom_sheet_modal.xml

<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/linearLayout"
android:orientation="vertical"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="10dp"
//adding background from drawable
android:background="@drawable/rounded_dialog">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:layout_gravity="center"
    android:gravity="center"
    android:weightSum="10"
    android:layout_marginStart="20dp"
    android:layout_marginEnd="20dp">


    <Button
        android:layout_width="0dp"
        android:layout_weight="5"
        android:layout_height="wrap_content"
        android:text="Buy"
        />

    <Button
        android:layout_width="0dp"
        android:layout_weight="5"
        android:layout_height="wrap_content"
        android:text="sell"
        />

</LinearLayout>
</LinearLayout>

rounded_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#444343"/>
<corners android:topLeftRadius="16dp"
    android:topRightRadius="16dp"/>

</shape>

主活动.java

public class MainActivity extends AppCompatActivity {

BottomSheetDialogFragment bottomSheetDialogFragment;
Button button;
LinearLayout linearLayout;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    bottomSheetDialogFragment = MyBottomSheetDialog.newInstance("Bottom Sheet Dialog");
    button = findViewById(R.id.button);



    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            bottomSheetDialogFragment.show(getSupportFragmentManager(),bottomSheetDialogFragment.getTag());
        }
    });

}
}

试试这个，让我知道@Morteza。快乐编码。