Android widget onclick listener for several buttons

Question

I am trying to create a widget for my application. From my reading an android developer site your onclick listeners all need to have an Intent. But what if I just want my button to update data in the widget itself and I don't want to start a new activity?

Here is some Android demo code:

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); 

I want a button that when I click makes a http web call and then displays the results in the widget. How do I go about doing this if I have to use intents? Also I need to be able to differentiate between which buttons where clicked.

Why do widgets use intents and not the normal onclick listener where it calls a function like activities?

EDIT

My widget provider:

public class MyWidgetProvider extends AppWidgetProvider {  private static final String MyOnClick1 = "myOnClickTag1"; private static final String MyOnClick2 = "myOnClickTag2"; private static final String MyOnClick3 = "myOnClickTag3";  @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {      // Get all ids     ComponentName thisWidget = new ComponentName(context, MyWidgetProvider.class);     int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);      for (int widgetId : allWidgetIds) {          RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);          remoteViews.setOnClickPendingIntent(R.id.widget_button_stayarm, getPendingSelfIntent(context, MyOnClick1));         remoteViews.setOnClickPendingIntent(R.id.widget_button_awayarm, getPendingSelfIntent(context, MyOnClick2));         remoteViews.setOnClickPendingIntent(R.id.widget_button_dissarm, getPendingSelfIntent(context, MyOnClick3));          remoteViews.setTextViewText(R.id.widget_textview_gpscoords, "gps cords");          appWidgetManager.updateAppWidget(widgetId, remoteViews);     } }  protected PendingIntent getPendingSelfIntent(Context context, String action) {     Intent intent = new Intent(context, getClass());     intent.setAction(action);     return PendingIntent.getBroadcast(context, 0, intent, 0); }  @Override public void onReceive(Context context, Intent intent) {      if (MyOnClick1.equals(intent.getAction())) {         // your onClick action is here         Toast.makeText(context, "Button1", Toast.LENGTH_SHORT).show();         Log.w("Widget", "Clicked button1");     } else if (MyOnClick2.equals(intent.getAction())) {         Toast.makeText(context, "Button2", Toast.LENGTH_SHORT).show();         Log.w("Widget", "Clicked button2");     } else if (MyOnClick3.equals(intent.getAction())) {         Toast.makeText(context, "Button3", Toast.LENGTH_SHORT).show();         Log.w("Widget", "Clicked button3");     } }; } 

My Android manifest:

<receiver     android:name="widget.MyWidgetProvider"     android:icon="@drawable/fsk"     android:label="FSK Widget" >     <intent-filter>         <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />     </intent-filter>      <meta-data         android:name="android.appwidget.provider"         android:resource="@xml/example_appwidget_info" /> </receiver> 

Answer 1

It is possible to make an onClick event for Views in Widgets. You can create as many onClick events as you want.

On top of your Widget class, create a static variable, which will be your onClick name tag:

private static final String MyOnClick = "myOnClickTag"; 

Define a helper method to automate the creation of each PendingIntent:

protected PendingIntent getPendingSelfIntent(Context context, String action) {     Intent intent = new Intent(context, getClass());     intent.setAction(action);     return PendingIntent.getBroadcast(context, 0, intent, 0); } 

Set this onClick tag to your view as below:

    remoteViews.setOnClickPendingIntent(R.id.button,                        getPendingSelfIntent(context, MyOnClick)); 

create an onReceive method in your Widget class and set this onClick event inside it:

public void onReceive(Context context, Intent intent) {      if (MyOnClick.equals(intent.getAction())){         //your onClick action is here     } }; 

Whenever the view that you set the tag is pressed, onReceive will capture that and will do the action just the same as our everyday, standard onClick event.

Edit: According to your answer, can you replace your onUpdate content with following lines and try again:

    RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_det);     thisWidget = new ComponentName(context, MyWidgetProvider.class);         remoteViews.setOnClickPendingIntent(R.id.widget_button_stayarm, getPendingSelfIntent(context, MyOnClick1));     remoteViews.setOnClickPendingIntent(R.id.widget_button_awayarm, getPendingSelfIntent(context, MyOnClick2));     remoteViews.setOnClickPendingIntent(R.id.widget_button_dissarm, getPendingSelfIntent(context, MyOnClick3));     remoteViews.setTextViewText(R.id.widget_textview_gpscoords, "gps cords");     appWidgetManager.updateAppWidget(thisWidget, remoteViews); 

Answer 2

just call the super in your onReceive method

@Override public void onReceive(Context context, Intent intent) {     super.onReceive(context, intent);//add this line     if (MyOnClick1.equals(intent.getAction())) {         // your onClick action is here         Toast.makeText(context, "Button1", Toast.LENGTH_SHORT).show();         Log.w("Widget", "Clicked button1");     } else if (MyOnClick2.equals(intent.getAction())) {         Toast.makeText(context, "Button2", Toast.LENGTH_SHORT).show();         Log.w("Widget", "Clicked button2");     } else if (MyOnClick3.equals(intent.getAction())) {         Toast.makeText(context, "Button3", Toast.LENGTH_SHORT).show();         Log.w("Widget", "Clicked button3");     } }