Android - Appwidget with Remoteviews not updating after reboot

Question

I saw similar questions here on SO, but nothing seems to work in my case...

I created an appwidget with an AdapterViewFlipper (Simple ViewAnimator that will animate between two or more views that have been added to it). The appwidget has a Next button that enables the user to navigate to the next view on the widget.

It all works fine when I first add the appwidget. But if the smartphone reboots, the Next button of the widget no longer works on my Samsung S4 (the method onReceive is called, but nothings happens, it doesn't navigate to the next view and is stuck at the first view). I have to delete the widget and add it again in order for it to work...

I suspect that it is a problem of Touchwiz since I tested it on another phone (Moto G) and it worked fine.

Here are some portions of my code :

AppWidgetProvider

public class AppWidgetProvider extends AppWidgetProvider {

public static final String NEXT_ACTION = VersionUtil.getPackageName() + ".action.NEXT";
private static final String TAG = DailyAppWidget.class.getSimpleName();


@Override
public void onEnabled(Context context) {
    // Enter relevant functionality for when the first widget is created
}

@Override
public void onDisabled(Context context) {
    // Enter relevant functionality for when the last widget is disabled
}

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    // There may be multiple widgets active, so update all of them
    for (int appWidgetId : appWidgetIds) {
        updateAppWidget(context, appWidgetManager, appWidgetId, colorValue);
    }
    super.onUpdate(context, appWidgetManager, appWidgetIds);
}

@TargetApi(Build.VERSION_CODES.HONEYCOMB)
void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
                            int appWidgetId, int primaryColor) {
    Intent intent = new Intent(context, ViewFlipperWidgetService.class);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
    // When intents are compared, the extras are ignored, so we need to embed the extras
    // into the data so that the extras will not be ignored.
    intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
    // Instantiate the RemoteViews object for the app widget layout.
    RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.app_widget);

    // open the activity from the widget
    Intent intentApp = new Intent(context, MainActivity.class);
    intentApp.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
    PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intentApp, 0);
    rv.setOnClickPendingIntent(R.id.widget_title, pendingIntent);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        rv.setRemoteAdapter(R.id.adapter_flipper, intent);
    } else {
        rv.setRemoteAdapter(appWidgetId, R.id.adapter_flipper, intent);
    }

    // Bind the click intent for the next button on the widget
    final Intent nextIntent = new Intent(context,
            AppWidgetProvider.class);
    nextIntent.setAction(AppWidgetProvider.NEXT_ACTION);
    nextIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
    final PendingIntent nextPendingIntent = PendingIntent
            .getBroadcast(context, 0, nextIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT);
    rv.setOnClickPendingIntent(R.id.widget_btn_next, nextPendingIntent);

    appWidgetManager.updateAppWidget(appWidgetId, mRemoteViews);
}

@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@Override
public void onReceive(Context context, Intent intent) {
    final String action = intent.getAction();
    if (action.equals(NEXT_ACTION)) {
        RemoteViews rv = new RemoteViews(context.getPackageName(),
                R.layout.daily_app_widget);

        rv.showNext(R.id.adapter_flipper);

        int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
                AppWidgetManager.INVALID_APPWIDGET_ID);
        Log.e(TAG, "onReceive APPWIDGET ID " + appWidgetId);
        AppWidgetManager.getInstance(context).partiallyUpdateAppWidget(
                appWidgetId, rv);
    }
    super.onReceive(context, intent);
}

Service

public class FlipperRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory {

private Context mContext;
private int mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;

private static final String TAG = "FILPPERWIDGET";

public FlipperRemoteViewsFactory(Context context, Intent intent) {
    mContext = context;
    mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
            AppWidgetManager.INVALID_APPWIDGET_ID);
    //... get the data
}

@Override
public void onCreate() {
    Log.e(TAG, "onCreate()");
}

@Override
public void onDataSetChanged() {
    Log.i(TAG, "onDataSetChanged()");
}

@Override
public void onDestroy() {
}

@Override
public int getCount() {
    //... return size of dataset
}

@Override
public RemoteViews getViewAt(int position) {
    Log.i(TAG, "getViewAt()" + position);

    RemoteViews page = new RemoteViews(mContext.getPackageName(), R.layout.app_widget_item);
    //... set the data on the layout

    return page;
}

@Override
public RemoteViews getLoadingView() {
    Log.i(TAG, "getLoadingView()");
    return new RemoteViews(mContext.getPackageName(), R.layout.appwidget_loading);
}

@Override
public int getViewTypeCount() {
    Log.i(TAG, "getViewTypeCount()");
    return 1;
}

@Override
public long getItemId(int position) {
    Log.i(TAG, "getItemId()");
    return position;
}

@Override
public boolean hasStableIds() {
    Log.i(TAG, "hasStableIds()");
    return true;
}
}

Manifest

<receiver android:name=".AppWidgetProvider"
    android:label="@string/app_name"
    android:enabled="@bool/is_at_least_12_api">
    <meta-data android:name="android.appwidget.provider"
        android:resource="@xml/app_widget_info" />
    <intent-filter>
        <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
    </intent-filter>
</receiver>
<!-- Service serving the RemoteViews to the collection widget -->
<service android:name=".ViewFlipperWidgetService"
    android:permission="android.permission.BIND_REMOTEVIEWS"
    android:exported="false" />

app wigdet info

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:initialKeyguardLayout="@layout/app_widget"
    android:initialLayout="@layout/app_widget"
    android:minHeight="110dp"
    android:minWidth="250dp"
    android:previewImage="@drawable/widget_preview"
    android:resizeMode="horizontal|vertical"
    android:updatePeriodMillis="14400000"
    android:widgetCategory="home_screen" />

Any help would be appreciated !

Answer 1

Depends on the launcher, there is no guarantee that your AppWidget will be updated immediately after the device started. It may be refreshed immeidately, or wait till the updatePeriodMillis passed after system started.

To solve your problem, define a BroadcastReceiver that will trigger the update of AppWidget after the reboot.

In AndroidManifest.xml , define the BootReceiver to get the boot_complete message.

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<receiver android:name=".BootReceiver" android:enabled="true" android:exported="false" >
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

And define the BootReceiver.java to start your AppWidgetUpdateService

public class BootReceiver extends BroadcastReceiver{
    @Override 
    public void onReceive(Context context, Intent intent){
        //start appwidget update service  
    }
}