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Use generated RemoteViews preview for widget picker if available

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WidgetCell will use the generated RemoteViews preview to display
previews in the widget picker. It will fallback to current preview
methods if not available.

Introduces WidgetManagerHelper.loadGeneratedPreviews as a utility
function. WidgetManagerHelper is passed into the constructor of
WidgetItem to avoid calling
context.getSystemService(AppWidgetManager.class) for each widget.

Bug: 308041327
Test: atest Launcher3Tests:GeneratedPreviewTest
Flag: ACONFIG com.android.launcher3.enable_generated_previews DEVELOPMENT
Change-Id: I37429057cda83a5321884ace2537038e050b9a58
This commit is contained in:
Willie Koomson
2023-11-07 22:31:46 +00:00
parent b2f38376c4
commit fedc18e9a8
10 changed files with 234 additions and 5 deletions
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20
src/com/android/launcher3/widget/WidgetManagerHelper.java
View File

@@ -24,8 +24,11 @@ import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.os.UserHandle;
import android.widget.RemoteViews;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import com.android.launcher3.model.WidgetsModel;
import com.android.launcher3.model.data.LauncherAppWidgetInfo;
@@ -130,6 +133,23 @@ public class WidgetManagerHelper {
appWidgetId).getBoolean(WIDGET_OPTION_RESTORE_COMPLETED);
}
/**
* Load RemoteViews preview for this provider if available.
*
* @param info The provider info for the widget you want to preview.
* @param widgetCategory The widget category for which you want to display previews.
*
* @return Returns the widget preview that matches selected category, if available.
*/
@Nullable
@RequiresApi(Build.VERSION_CODES.VANILLA_ICE_CREAM)
public RemoteViews loadGeneratedPreview(@NonNull AppWidgetProviderInfo info,
int widgetCategory) {
if (!android.appwidget.flags.Flags.generatedPreviews()) return null;
return mAppWidgetManager.getWidgetPreview(info.provider, info.getProfile(), widgetCategory);
}
private static Stream<AppWidgetProviderInfo> allWidgetsSteam(Context context) {
AppWidgetManager awm = context.getSystemService(AppWidgetManager.class);
return Stream.concat(