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I have an android application that starts pandora by voice command. It works great, but I want the activity to switch back to my application, leaving pandora running in the background. I'm using this code to launch pandora:

PackageManager pm = getPackageManager()
try{
String packageName = "com.pandora.android";
launchIntent = pm.getLaunchIntentForPackage(packageName);
startActivity(launchIntent);
}
catch (Exception e1)
{}

Any thoughts?

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1 Answer 1

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First glance I thought you could use Activity.startActivities, as in:

 final PackageManager pm = getPackageManager();
try {
startActivities(new Intent[] {
pm.getLaunchIntentForPackage("com.pandora.android"),
pm.getLaunchIntentForPackage("com.your.packagename")
});
} catch (final Exception ignored) {
// Nothing to do
} finally {
finish();
}

But Pandora needs a little time to start playback and in that case, I think you best bet is to set up a NotificationListenerService and wait for Pandora's notification to be posted, which would indicate playback has started, then launch your app.

Here's an example:

public class PandoraNotificationListener extends NotificationListenerService {
@Override
public void onNotificationPosted(StatusBarNotification sbn) {
final String packageName = sbn.getPackageName();
if (!TextUtils.isEmpty(packageName) && packageName.equals("com.pandora.android")) {
startActivity(new Intent(this, YourActivity.class)
.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
}
}
@Override
public void onNotificationRemoved(StatusBarNotification sbn) {
// Nothing to do
}
}

In your AndroidManifest

<service
android:name="your.path.to.PandoraNotificationListener"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE" >
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>

Also, your users will need to enable your app to listen for notifications to be posted under:

  • Settings --> Security --> Notification access

But you can direct your users straight there by using the following Intent:

startActivity(new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS"));
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