Develop Reference

How to start an activity by the click on an image in widget?

Intent intent = new Intent( context, ColorConfigure.class);
Intent.putExtras(AppWidgetManager.EXTRA_APPWIDGET_ID, appwidgetId );
PendingIntent pi = PendingIntent.getActivity( context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
RemoteViews r = new RemoteViews( context.getPackageName(), R.layout. activity_widget);
r.setOnClickPendingIntent(R.I'd.pic, pic);
The above code isn't working for the time i.e., when I start the widget for the first time then widget gets loaded easily but when I go onto start a new activity from the widget then nothing happens.
But whenever I re-run my app from the eclipse without removing the widget then my widget starts running successfully without any glitch.
I don't really know what sort of problem is this one?? Or if anyone is able to help me by sending me the code of a widget that start a fresh activity from a button on that activity.

even i have faced similar problem for my app homescreen widget .which is very similar to fb/twitter homescreen widget(show updates if not signed show as "your not signedin").achieved using android service. even you don't need a service. in your case you are not calling manager.updateAppWidget(ids, views);
public class NFWidgetProvider extends AppWidgetProvider {
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
final Intent intent = new Intent(context, UpdateService.class);
context.startService(intent);
}
}
Updateservice.class
//my app code..mention service class app manifest
public void onStart(Intent intent, int startId) {
AppWidgetManager manager = AppWidgetManager.getInstance(this);
ComponentName thisWidget = new ComponentName(this,
NFWidgetProvider.class);
int[] ids = manager.getAppWidgetIds(thisWidget);
final int N = ids.length;
for (int i = 0; i < N; i++) {
int awID = ids[i];
RemoteViews views = new RemoteViews(getPackageName(),
R.layout.widget_layout);
Intent intent = new Intent(this, your intented class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//views.setTextViewText(R.id.widgetcount, visitstext);
PendingIntent pendingIntent = PendingIntent.getActivity(this,
0, intent, 0);
views.setOnClickPendingIntent(R.id.widgetimage, pendingIntent);
manager.updateAppWidget(awID, views);
}

How to connect an android widget to my android application? both are my Android applications

I want to combine my widget and one of my android application..
Is it possible to do that?
My plan is, once user open up my android widget, the widget will directly open up my android application?
Is there any way how?
I made some method here from my widget class:
public class ExampleAppWidgetProvider extends AppWidgetProvider {
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
for (int i = 0; i < appWidgetIds.length; i++) {
int appWidgetId = appWidgetIds[i];
Intent intent = startActivity(new Intent("com.xxx.yyy.widget.FlamingoActivity"));
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0,
intent, 0);
RemoteViews views = new RemoteViews(context.getPackageName(),
R.layout.widget1);
views.setOnClickPendingIntent(R.id.Image, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
I tried to call the second app, FlamingoActivity, but its failing.. :(
NOT THE FULL SOLUTION:
I should change this line
Intent intent = startActivity(new Intent("com.xxx.yyy.widget.FlamingoActivity"));
to this:
Intent intent = new Intent(context, FlamingoActivity.class);

You need to set an onClickpendingIntent on your widget
Intent intent = new Intent(context, ExampleActivity.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.appwidget_provider_layout);
views.setOnClickPendingIntent(R.id.button, pendingIntent);
And also See this question Launching activity from widget

The activity that you are trying to call needs to be public (exported) in the manifest of its app. There is nothing special about starting activities from a widget, other than the fact that you use a PendingIntent to allow the widget to work as a part of your app (it runs inside the launcher app).

Service enabling itself when it shouldn't

I've added a widget for my application, basically clicking on the widget enables a service.
But sometimes i experience random enabling of the service even if i didn't press the widget
I followed the android developer guide to make the widget and the code looks like this
public class ToggleWidget extends AppWidgetProvider {
static RemoteViews remoteViews;
boolean status = false;
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
// Perform this loop procedure for each App Widget that belongs to this provider
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
remoteViews = new RemoteViews(context.getPackageName(), R.layout.toggle_widget);
Intent intent = new Intent(context.getApplicationContext(), WakeService.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
PendingIntent pendingIntent = PendingIntent.getService(
context.getApplicationContext(), 0, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.bulb_widget, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);
context.startService(intent);
Log.w(getClass().getName(), "Widget Worked");
// Tell the AppWidgetManager to perform an update on the current app widget
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
}
}
}
This code should run the service intent when i click the ImageButton.
Clicking on it works as it should, but i get those random enablings (the service displays a notification when it's enabled, so i know it's running)
Can you spot something wrong in the code?

Take out
context.startService(intent);
Since the PendingIntent already starts the Service when the widget is clicked, having an explicit context.startService() in onUpdate() will make the Service start regardless of whether or not the widget is clicked.

App widget button to trigger onUpdate

public class ExampleAppWidgetProvider extends AppWidgetProvider {
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
final int N = appWidgetIds.length;
// Perform this loop procedure for each App Widget that belongs to this
// provider
for (int i = 0; i < N; i++) {
int appWidgetId = appWidgetIds[i];
// Get the layout for the App Widget and attach an on-click listener
// to the button
RemoteViews views = new RemoteViews(context.getPackageName(),
R.layout.example_appwidget);
Intent intent = new Intent(context, Fragment_testActivity.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
views.setOnClickPendingIntent(R.id.button1, pendingIntent);
// Tell the AppWidgetManager to perform an update on the current app
// widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}
Why doesn't the button1 trigger onUpdate (nor onReceive) when the widget is added to the homescreen and button1 is clicked? Adding/removing the widget triggers those events, but not clicking the button.
Manifest, widget declaration, widget layout declaration

First thing I see:
new Intent(context, Fragment_testActivity.class);
You specify an activity as the receiving component. The activity has nothing to do with the update process. Try to set ExampleAppWidgetProvider as the component of the intent or don't specify a component at all (e.g. by using new Intent()).

Android widget button unclickable when adding more than one widget

I have a widget which is basically a big button (with some images in the background). The button works fine if there's just one widget on the home screen (or more than one after a phone reboot), but if I try to add another widget, the button suddenly stops reacting (on the second widget).
Been struggling with this for months now. Hopefully you'll be able to assist.
public class StatsWidget extends AppWidgetProvider {
public static String ACTIONWIDGETCLICK = "MyWidgetClick";
#Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
Intent intentt = new Intent(context, StatsService.class);
context.startService(intentt);
final int N = appWidgetIds.length;
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.main);
Intent intent = new Intent(context, StatsWidgetActivity.class);
intent.setAction(ACTIONWIDGETCLICK);
intent.putExtra("widgetId", appWidgetId);
PendingIntent pendingIntent = PendingIntent.getActivity(context, appWidgetId, intent, PendingIntent.FLAG_UPDATE_CURRENT);
views.setOnClickPendingIntent(R.id.widget_button, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}

The only error I see in your code is you forgot to add
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
This must be used when starting an Activity from a service/broadcastreciever/etc. Otherwise are you updating the widget from anywhere else in your app? I recently had a problem with the pending intent unresistering itself because I updated the widget from within my app and didn't add the
views.setOnClickPendingIntent(R.id.widget_button, pendingIntent);
to the update code.
Hope this helps