我正在尝试实现一个带有一些小部件的Android应用程序,可以在主屏幕/锁定屏幕上使用! 目前,当创建小部件时,小部件内容是正确的,但是没有保持更新。
这是我的代码: MyWidgetProvider
public class MyWidgetProvider extends AppWidgetProvider {
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
Integer[] preferencesIds = MyPreferences.getWidgetIds(context);
Log.d(MyWidgetProvider.class.getSimpleName(), "In SP there is " + Arrays.toString(preferencesIds));
if (preferencesIds != null && preferencesIds.length > 0) {
for (int appWidgetId : preferencesIds) {
Log.i(MyWidgetProvider.class.getSimpleName(), "Update widget " + appWidgetId + " from preferences");
updateWidgetId(context, appWidgetManager, appWidgetId);
}
}
if (appWidgetIds != null && appWidgetIds.length > 0) {
for (int appWidgetId : appWidgetIds) {
Log.i(MyWidgetProvider.class.getSimpleName(), "Update widget " + appWidgetId + " from base");
updateWidgetId(context, appWidgetManager, appWidgetId);
}
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
@Override
public void onDeleted(Context context, int[] appWidgetIds) {
Log.d(MyWidgetProvider.class.getSimpleName(), "Widget with id " + Arrays.toString(appWidgetIds) + "has been deleted");
for (int i = 0; i < appWidgetIds.length; i++) {
MyPreferences.removeWidgetId(context, appWidgetIds[i]);
}
super.onDeleted(context, appWidgetIds);
}
/**
* Update a widget with a specific id
*
* @param context app context
* @param appWidgetManager the widget manager
* @param appWidgetId the widget id to update
*/
private void updateWidgetId(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
MyPreferences.addWidgetId(context, appWidgetId);
Log.d(MyWidgetProvider.class.getSimpleName(), "Widget with id " + appWidgetId + " has been updated");
RemoteViews rv = new RemoteViews(context.getPackageName(),
R.layout.widget);
Intent intent = new Intent(context, StickyWidgetService.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
appWidgetId);
intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
rv.setRemoteAdapter(android.R.id.list, intent);
// Handle click
Intent activityIntent = new Intent(context, NotesListActivity.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, appWidgetId, activityIntent, 0);
rv.setOnClickPendingIntent(R.id.widget_layout, pendingIntent);
// Return
appWidgetManager.updateAppWidget(appWidgetId, rv);
}
}
这个想法是将所有的小部件id保存在应用程序的共享首选项中,这样我就可以通过强制使用一个意图来更新它们。例如,在我的MainActivity
中,我有如下代码:
/**
* Starts an intent that force the service to wake up and update
* the widgets
*/
private void updateWidgets() {
Intent intent = new Intent(this, MyWidgetProvider.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
// Use an array and EXTRA_APPWIDGET_IDS instead of AppWidgetManager.EXTRA_APPWIDGET_ID,
// since it seems the onUpdate() is only fired on that:
int[] ids = {R.xml.widget_infos}; // As I store the ids, this is kind of useless ?
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids);
sendBroadcast(intent);
}
问题在于,我在logcat中得到了正确的内容(正在更新3个小部件,并打印出它们的ID),但在我的屏幕上只有最后一个小部件被更新。
如果有人有线索或者其他任何信息,那将是很棒的,因为这让我疯狂不已 :/