Android Programming Tutorials

More Home Cooking

Add the following lines to the end of the onHandleIntent() method in

WidgetService:

Intent i=new Intent(this, WidgetService.class);

PendingIntent pi=PendingIntent.getService(this, 0 , i, 0 );

updateViews.setOnClickPendingIntent(R.id.next, pi);

mgr.updateAppWidget(me, updateViews);

Here, we create a service PendingIntent and register it as the click handler

for the button.

Now, if you recompile and reinstall the project, you will see that pressing

the button gives you a new restaurant (unless it happens to randomly select

the current one again).

Step #5: Get Control on Name Clicks

Finally, we want to bring up the DetailForm activity on the currently-visible

restaurant if the user taps on the restaurant's name. To do this, we will need

another PendingIntent, but we also need a bit more data from the content

provider first.

Replace the current implementation of onHandleIntent() in WidgetService

with the following:

@Override

public void onHandleIntent(Intent intent) {

ComponentName me=new ComponentName(this, AppWidget.class);

RemoteViews updateViews=new RemoteViews("apt.tutorial",

R.layout.widget);

RestaurantHelper helper=new RestaurantHelper(this);

AppWidgetManager mgr=AppWidgetManager.getInstance(this);

try {

Cursor c=helper

.getReadableDatabase()

.rawQuery("SELECT COUNT(*) FROM restaurants", null);

c.moveToFirst();

int count=c.getInt( 0 );

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