How to implement your own like button in Android?

How to implement a Button on an Android Widget

• I am just getting started with Android development and I have created a nice little widget that displays some info on my home screen. However, I now want to implement a Button on my widget that updates the info in my widget TextView. Can anyone advise how to go about doing this? Thanks

• Answer:

  Solved - I can confirm that an Activity is NOT needed if you want create a Button to update an Android AppWidget. I have been able to implement my AppWidgetProvider class such that it registers an android.appwidget.action.APPWIDGET_UPDATE intent-filter with the Broadcast receiver in the AndroidManifest.xml, which then fires the onUpdate event in the AppWidgetProvider class (which in turn then runs the UpdateService). <!-- Broadcast Receiver that will process AppWidget updates --> <receiver android:name=".MyWidget" android:label="@string/widget_name"> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> </intent-filter> <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget" /> </receiver> The UpdateService in my AppWidgetProvider class then uses onHandleIntent to run a private buildUpdate method - which registers the onClick event with a call to setOnClickPendingIntent as follows: // set intent and register onclick Intent i = new Intent(this, MyWidget.class); PendingIntent pi = PendingIntent.getBroadcast(context,0, i,0); updateViews.setOnClickPendingIntent(R.id.update_button,pi); Here is a link to some source code of a working example, which shows how an update button can be used to update a Twitter widget: https://github.com/commonsguy/cw-advandroid/tree/b01438e7f0fed8f795ddec4be43066905f03d0cc/AppWidget/TwitterWidget