Using floating/translucent windows with Android PIP causes a 3 second delay plus scaling issues. I've put together a sample app to demo the problem. I'm thinking there is some combination of tags I am either using incorrectly or completely missing some tag or tags. I tried many different combinations and came up with a few combos to demo the problem. I'll add code portions to give you and idea of what I am doing. I'll add additional or full code as needed. I want to try and keep this question compact but it may become long as I add more of the sample app necessary for you to actually run the app on your development environment.
Here are the significant sections from styles.xml for the test app:
<!--== ERROR CASE #1=================================-->
<!-- Causes 3 second delay to get into PIP mode -->
<!-- Incorrect window scale during 3 second delay -->
<!-- Incorrect window size after PIP exit -->
<!--=================================================-->
<item name="android:windowIsFloating">true</item>
<!--=================================================-->
<!--== ERROR CASE #2=================================-->
<!-- Causes 3 second delay to get into PIP mode-->
<!-- Window is not transparent -->
<!--=================================================-->
<item name="android:windowIsTranslucent">true</item>
<!--=================================================-->
<!--== ERROR CASE #3=================================-->
<!-- Causes 3 second delay to get into PIP mode -->
<!-- Incorrect window scale during 3 second delay -->
<!-- Incorrect window scale after PIP exit -->
<!--=================================================-->
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowIsFloating">true</item>
<!--=================================================-->
The following image is the initial app screen (as expected):
.
Putting the app into PIP mode causes this screen for three seconds (unexpected delay and bad scale):
.
After 3 seconds, PIP mode is enabled ( expected image )
Exiting PIP results in an unusable activity due to bad scaling:
I'll add additional code snippets as necessary. But for now, I'm thinking styles.xml file is incorrect.
Here is styles:
<resources>
<style name="StyleJava42" parent="Theme.AppCompat">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="android:windowFullscreen">false</item>
<!--== ERROR CASE #1=================================-->
<!-- Causes 3 second delay to get into PIP mode -->
<!-- Incorrect window scale during 3 second delay -->
<!-- Incorrect window size after PIP exit -->
<!--=================================================-->
<item name="android:windowIsFloating">true</item>
<!--=================================================-->
<!--== ERROR CASE #2=================================-->
<!-- Causes 3 second delay to get into PIP mode-->
<!-- Window is not transparent -->
<!--=================================================-->
<item name="android:windowIsTranslucent">true</item>
<!--=================================================-->
<!--== ERROR CASE #3=================================-->
<!-- Causes 3 second delay to get into PIP mode -->
<!-- Incorrect window scale during 3 second delay -->
<!-- Incorrect window scale after PIP exit -->
<!--=================================================-->
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowIsFloating">true</item>
<!--=================================================-->
</style>
</resources>
And here is the manifest:
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.AppCompat"
>
<activity
android:theme="@style/StyleJava42"
android:name=".MainActivity"
android:supportsPictureInPicture="true"
>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
Bottom line, I need a usable transparent window going in to and out of PIP mode that does not cause scaling problems.
EDIT:2019_08_20 - As requested, here is the activity code:
public class MainActivity extends Java42LifeCycleTrace { //AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
if (isInPictureInPictureMode()) {
setContentView(R.layout.activity_main_pip);
} else {
setContentView(R.layout.activity_main);
}
}
}
public void pip(View v) {
((Button) v).setText("WORKING");
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
PictureInPictureParams.Builder pipBuilder = null;
pipBuilder = new PictureInPictureParams.Builder();
PictureInPictureParams parms = pipBuilder.build();
enterPictureInPictureMode(parms);
}
}
public void exit(View v) {
finish();
}
}
Here is layout activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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="wrap_content"
android:layout_height="wrap_content"
tools:context=".MainActivity"
>
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:background="@android:drawable/btn_default"
android:onClick="pip"
android:text="Press for PIP"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button2"
app:layout_constraintVertical_bias="0.100000024" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:background="@android:drawable/btn_default"
android:onClick="exit"
android:text="Press to Exit"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.100000024" />
</androidx.constraintlayout.widget.ConstraintLayout>
Here is layout activity_main_pip.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="wrap_content"
android:layout_height="wrap_content"
tools:context=".MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:drawable/btn_default"
android:text="PIP Mode"
/>
</LinearLayout>
