我正在使用 这个解决方案 来为
如何在API < 21中使背景变成圆角?
如果无法更改背景,请帮我更改背景颜色。
BottomSheetDialogFragment
中的对话框设置圆角,它在 API 21 及更高版本中运行良好。
但是在Api < 21中,它会移除背景并且圆角背景也会消失。
![enter image description here](https://istack.dev59.com/Ff0F2.webp)
BottomSheetDialogFragment
中的对话框设置圆角,它在 API 21 及更高版本中运行良好。
但是在Api < 21中,它会移除背景并且圆角背景也会消失。
Morteza,我编写了以下代码使得 BottomSheetDialog Fragment 对话框拥有圆角,并已在 KitKat 版本的手机上进行了测试。
Bottom Sheet Dialog 类的代码
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>
MainActivity.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());
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@android:color/white"/>
<corners android:topLeftRadius="16dp"
android:topRightRadius="16dp"/>
</shape>
view!!.getViewTreeObserver().addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
override fun onGlobalLayout() {
if (Build.VERSION.SDK_INT < 16) {
view!!.getViewTreeObserver().removeGlobalOnLayoutListener(this)
} else {
view!!.getViewTreeObserver().removeOnGlobalLayoutListener(this)
}
val dialog = dialog as BottomSheetDialog?
val bottomSheet =
dialog!!.findViewById<View>(com.google.android.material.R.id.design_bottom_sheet) as FrameLayout?
//Change background Image for all android versions below Api < 21
bottomSheet!!.setBackgroundResource(R.drawable.rounded_dialog)
}
})
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
View bottomSheet = (View) view.getParent();
bottomSheet.setBackgroundTintMode(PorterDuff.Mode.CLEAR);
bottomSheet.setBackgroundTintList(ColorStateList.valueOf(Color.TRANSPARENT));
bottomSheet.setBackgroundColor(Color.TRANSPARENT);
}
这将允许您的自定义带圆角的可绘制对象在设置为片段布局的顶层视图的背景后正确显示。
本质上,这将覆盖默认的BottomSheetFragment属性,包括颜色、tintMode和tintList。
使用此方法,无需处理样式资源。