BottomSheetDialog背景闪烁 [英] BottomSheetDialog background blinking
本文介绍了BottomSheetDialog背景闪烁的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
解决方案
闪烁的主要原因是由于 BottomSheetDialog
的默认样式定义了默认的 dim 行为.
我们可以通过使用 bottomSheetDialogTheme
定义自定义主题来解决上述问题,该主题依次为:
- 通过设置 windowAnimationStyle 转换为
@null
. - 将 backgroundDimEnabled 属性设置为
false
.
示例:
<样式名称="AppTheme" parent ="Theme.AppCompat.Light.DarkActionBar">< item name ="colorPrimary"> @ color/colorPrimary</item>< item name ="colorPrimaryDark"> @ color/colorPrimaryDark</item>< item name ="colorAccent"> @ color/colorAccent</item>< item name ="bottomSheetDialogTheme"> @ style/AppTheme.BottomSheetDialog</item></style>< style name ="AppTheme.BottomSheetDialog" parent ="Theme.Design.BottomSheetDialog">< item name ="android:windowAnimationStyle"> @ null</item>< item name ="android:backgroundDimEnabled"> false</item><!-可选->< item name ="android:windowBackground">#99323232</item></style>
BottomSheetDialog
's background is blinking when switching between apps. What am I doing wrong ?
MainActivity.java
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.btn1).setOnClickListener(v -> {
BottomSheetDialog bottomSheetDialog = new BottomSheetDialog(MainActivity.this);
bottomSheetDialog.setContentView(R.layout.content);
bottomSheetDialog.show();
});
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
content.xml
<?xml version="1.0" encoding="utf-8"?>
<View xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="300dp"
android:background="#F00" />
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.holtaf.testandroidapplication">
<application
android:allowBackup="true"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/Theme.AppCompat.Light.DarkActionBar">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
My appcompat
version is 27.1.1.
解决方案
The main reason for the flickering is due to the default styling of the BottomSheetDialog
which defines a default animation and the dim behavior.
We can resolve the above issue by defining a custom theme using bottomSheetDialogTheme
which in turn:
- Disables the default window animation for the BottomSheet by setting windowAnimationStyle to
@null
. - Sets the backgroundDimEnabled attribute to
false
.
Example:
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="bottomSheetDialogTheme">@style/AppTheme.BottomSheetDialog</item>
</style>
<style name="AppTheme.BottomSheetDialog" parent="Theme.Design.BottomSheetDialog">
<item name="android:windowAnimationStyle">@null</item>
<item name="android:backgroundDimEnabled">false</item>
<!-- optional -->
<item name="android:windowBackground">#99323232</item>
</style>
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