Develop Reference

partiallyUpdateAppWidget on RemoteViews not working

In the RemoteViews for an AppWidget I have an AdapterViewFlipper which is supposed to flip when the user clicks a button in the AppWidget. According to the official documentation this should be done by calling the showNext on the RemoteViews. The AppWdiget should then be updated with partiallyUpdateAppWidget which even has the showNext() function as an example in the documentation. I've tried implementing this and I'm most likely making some silly mistake that I can't seem to figure out.
public class WidgetProvider extends AppWidgetProvider {
public static final String NEXT = "next";
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
for (int appWidgetId : appWidgetIds) {
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
Intent nextIntent = new Intent(context, WidgetProvider.class);
nextIntent.setAction(NEXT);
views.setOnClickPendingIntent(R.id.next_button,
PendingIntent.getBroadcast(context, appWidgetId, nextIntent,
PendingIntent.FLAG_UPDATE_CURRENT));
views.setRemoteAdapter(R.id.view_flipper, new Intent(context,
WidgetRemoteViewService.class));
appWidgetManager.updateAppWidget(appWidgetId, views);
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
#Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals(NEXT)) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
R.layout.widget_layout);
remoteViews.showNext(R.id.view_flipper);
AppWidgetManager.getInstance(context).partiallyUpdateAppWidget(
AppWidgetManager.getInstance(context).getAppWidgetIds(
new ComponentName(context, WidgetProvider.class)),
remoteViews);
}
super.onReceive(context, intent);
}
}
When replacing partiallyUpdateAppWidget with updateAppWidget the next button is working until the orientation changes or the phone goes to sleep which forces a redraw of the last stored RemoteViews. This leads me to believe the mistake I'm making has to do with partial update but I can't figure out what I'm doing wrong.

In which API level are you testing?
Maybe the problem with withpartiallyUpdateAppWidget is related to this open issue issuetracker.google.com/issues/37136552

Changing Widget Image by OnClick (or PendingIntent ?)

I would like my Appwidget in addition to the main function nor (Widget)images changed.
When calling the function PendingIntent pendingIntent = PendingIntent.getActivity(context, 1001, new Intent(context, Counter.class), 0); should also change the widget to the new image.
Then, when the requested activity exits, the widget will switch to the old image. The Counter.class itself has no layout - so I can still see the homescreen with the widget when activity is running. Why would that the widget displays through changing the picture that the activity is running or rather not.
But I have no idea how to do it.
My WidgetProvider code:
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
super.onUpdate(context, appWidgetManager, appWidgetIds);
for (int i = appWidgetIds.length; --i >= 0;) {
int appWidgetId = appWidgetIds[i];
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, new Intent(context, Counter.class), 0);
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.count_widget);
remoteViews.setOnClickPendingIntent(R.id.countWidget, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
}
}
P.S. Sorry for my English :)

How to know clicked widget id?

I have implemented a widget with an ImageButton and a TextView. That ImageButton launch an activity when its clicked. This activity updates the widget text with what the user writes on the activity EditText. Now the problem is that I only know how to get the ids like this:
for (int widgetId : allWidgetIds) {
// Create some random data
int number = (new Random().nextInt(100));
RemoteViews remoteViews = new RemoteViews(getApplicationContext()
.getPackageName(), R.layout.widget_layout);
Log.w("WidgetExample", String.valueOf(number));
//Here I should set text from edit text, but I'm using a random for testing.
remoteViews.setTextViewText(R.id.textView1,
"Random: " + String.valueOf(number));
appWidgetManager.updateAppWidget(widgetId, remoteViews);
}
This code will obviously change the data of all the ids, since its inside a for. Is there anyway that I can past the clicked widgetId with my intent, so I can eliminate that for? This is my widgetProvider:
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
// Get all ids
ComponentName thisWidget = new ComponentName(context, Widget.class);
allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);
for (int widgetId : allWidgetIds) {
Intent i = new Intent(context, WidgetSetup.class);
i.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, allWidgetIds);
i.setFlags(i.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
// Create some random data
int number = (new Random().nextInt(100));
RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
R.layout.widget_layout);
// Set the text
remoteViews.setTextViewText(R.id.textView1, String.valueOf(number));
Intent active = new Intent(context, Widget.class);
active.setAction(ACTION_WIDGET_REFRESH);
PendingIntent actionPendingIntent = PendingIntent.getBroadcast(context, 0, active, 0);
remoteViews.setOnClickPendingIntent(R.id.imageButton1, actionPendingIntent);
active = new Intent(context, Widget.class);
active.setAction(ACTION_WIDGET_SETTINGS);
actionPendingIntent = PendingIntent.getBroadcast(context, 0, active, 0);
remoteViews.setOnClickPendingIntent(R.id.imageButton2, actionPendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);
}
}
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(ACTION_WIDGET_REFRESH)) {
//Log.i("onReceive", ACTION_WIDGET_REFRESH);
Intent i = new Intent(context, MainActivity.class);
i.setFlags(i.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
} else if (intent.getAction().equals(ACTION_WIDGET_SETTINGS)) {
//Log.i("onReceive", AppWidgetManager.EXTRA_APPWIDGET_ID);
Intent i = new Intent(context, WidgetSetup.class);
i.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, allWidgetIds);
//Here I tried to pass the widgetID with no luck.
//i.putExtra(pass widget id?);
i.setFlags(i.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
} else {
super.onReceive(context, intent);
}
}
Thanks

For a running example have a look at my code for MiniCallWidget lines 97 and 169.

Add an Extra to the intent you launch onClick and create in the for loop that specifies the ID of the current widget being setup.
Then retrieve the ID from the extras in the receiving Activity, and pass it back when you're done. Then use the returned ID to make changes only to one widget.
You can do this by having an if-else that also checks for a flag that tells whether or not you're updating only one widget.

Android AppWidget: new instance freezing old one

I use the following:
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
for (int appWidgetId : appWidgetIds) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.main);
Intent configIntent = new Intent(context, ConfigureActivity.class);
configIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
configIntent.setAction(ACTION_UPDATE);
PendingIntent configPendingIntent = PendingIntent.getActivity(context, 0, configIntent, PendingIntent.FLAG_CANCEL_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.config_button, configPendingIntent);
Intent smsIntent = new Intent(context, TurboSMSWidget.class);
smsIntent.putExtra(APP_ID, appWidgetId);
smsIntent.setAction(ACTION_SEND);
PendingIntent smsPendingIntent = PendingIntent.getBroadcast(context, 0, smsIntent, PendingIntent.FLAG_CANCEL_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.send_button, smsPendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
}
}
The widget creation works great, but every time i run a new widget the old one is disabled. I can't use buttons anymore, it is like frozen on the home screen. What's wrong with this code?

I think the problem is in PendingIntent. The new instance of PendingIntent overwrite the old one. You should use unique Intent for inialization of PendingIntent. Here is the discussions that may help you: Multiple Instances Of Widget Only Updating Last widget, How can I correctly pass unique extras to a pending intent?, android pending intent notification problem

android widget unresponsive

I have a widget that you press and it then it will update the text on the widget. I have set an on click listener to launch another activity to perform the text update, But for some reason it only works temporarily and then it will become unresponsive and not do anything when pressed. Does anyone know why it might be doing that? i have posted my widget code below in case it is helpful.
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) {
thisWidget = new ComponentName(context, MemWidget.class);
Intent intent = new Intent(context, updatewidget.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
// Get the layout for the App Widget and attach an on-click listener to the button
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
views.setOnClickPendingIntent(R.id.ImageButton01, pendingIntent);
// Tell the AppWidgetManager to perform an update on the current App Widget
appWidgetManager.updateAppWidget(thisWidget, views);
}
#Override
public void onReceive(Context context, Intent intent)
{
appWidgetManager = AppWidgetManager.getInstance(context);
remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
thisWidget = new ComponentName(context, MemWidget.class);
// v1.5 fix that doesn't call onDelete Action
final String action = intent.getAction();
if (AppWidgetManager.ACTION_APPWIDGET_DELETED.equals(action)) {
final int appWidgetId = intent.getExtras().getInt(
AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
if (appWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) {
this.onDeleted(context, new int[] { appWidgetId });
}
}
else
{
super.onReceive(context, intent);
}
}
Here is code that is called from my activity
thisWidget = new ComponentName(this, MemWidget.class);
appWidgetManager = AppWidgetManager.getInstance(this);
remoteViews = new RemoteViews(this.getPackageName(), R.layout.widget);
//do work
remoteViews.setTextViewText(R.id.ImageButton01,"setting text here");
appWidgetManager.updateAppWidget(thisWidget, remoteViews);

The onUpdate method there doesn't update any of the data in the RemoteViews other than the PendingIntent, so if that's ever called, the widget will revert to the state defined in R.layout.widget.
Do you have the code that calls updateAppWidget after the user interaction? That might help too.
Also, if the update is inline and doesn't require any UI, you don't need to launch an activity to do that update. It's more efficient and won't disrupt the back stack if your PendingIntent is for a broadcast receiver instead, using PendingIntent.getBroadcast. You can use the same BroadcastReceiver that is your app widget provider. You don't need another one.
Update: (I can't reply below because the text is too long)
I'd make a function like this, and call it from your activity from onUpdate(). You'll need to save text somewhere so you can also pass it in from onUpdate(). Otherwise it will revert the text to the default in R.layout.widget.
void updateWidget(Context context, CharSequence text) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
remoteViews.setOnClickPendingIntent(R.id.ImageButton01, pendingIntent);
remoteViews.setTextViewText(R.id.ImageButton01, text);
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
ComponentName thisWidget = new ComponentName(context, MemWidget.class);
appWidgetManager.updateAppWidget(thisWidget, remoteViews);
}