Android opening specific tab fragment on notification click

Question

I have an android application which uses Action Bar Tabs. There is also a notification system.

I want to open a specific tab directly, on clicking the notification. How to do this(because notification pending intents can only open activities, and my main activity contains 3 fragments for 3 tabs) ?

Following is the code for the mainactivity for tabs.

    public class MaintabActivity extends Activity {
public static Context appContext;
public static MapView mMapView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.mainsc);
    appContext = getApplicationContext();

    startService(new Intent(this, MyService.class));


   //ActionBar
    ActionBar actionbar = getActionBar();
    actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    ActionBar.Tab ChatTab = actionbar.newTab().setText("Chat");
    ActionBar.Tab MapsTab = actionbar.newTab().setText("Maps");
    ActionBar.Tab SplashTab=actionbar.newTab().setText("Splash");

    Fragment ChatFrag = new ChatActivity();
    MapActivity mMapFragment = MapActivity.newInstance();
    Fragment SplashFrag = new SplashActivity();


    ChatTab.setTabListener(new MyTabsListener(ChatFrag));
    MapsTab.setTabListener(new MyTabsListener(mMapFragment));
    SplashTab.setTabListener(new MyTabsListener(SplashFrag));

    actionbar.addTab(ChatTab);
    actionbar.addTab(MapsTab);
    actionbar.addTab(SplashTab);

}




@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putInt("tab", getActionBar().getSelectedNavigationIndex());
}

    }

    class MyTabsListener implements ActionBar.TabListener {
public Fragment fragment;

public MyTabsListener(Fragment fragment) {
    this.fragment = fragment;
}

@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
    Toast.makeText(MaintabActivity.appContext, "Reselected!", Toast.LENGTH_LONG).show();
}

@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
    ft.replace(R.id.fragment_container, fragment);
}

@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
    ft.remove(fragment);
}

    }

This is the code from the service which shows notification.

    private void showNotification() {

        CharSequence text = getText(R.string.local_service_started);

        // Set the icon, scrolling text and timestamp
        Notification notification = new Notification(R.drawable.ic_launcher, text,
                System.currentTimeMillis());

        // The PendingIntent to launch our activity if the user selects this notification
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, MaintabActivity.class), 0);

        // Set the info for the views that show in the notification panel.
        notification.setLatestEventInfo(this, getText(R.string.local_service_label),
                       text, contentIntent);

        // Send the notification.
        mNM.notify(NOTIFICATION, notification);
    }

Answer 1

Pass action specifying tab to open, along with intent in pending intent. And in your activity retrieve action (see getIntent()) passed and based on it, open a specific tab.

Intent intent = new Intent(this, Home.class);
intent.setAction("OPEN_TAB_1");
PendingIntent pending intent = PendingIntent.getService(this, 0, intent, 0);              

// In OnCreate() or depending on implementation  
if(getIntent().getAction().equals("OPEN_TAB_1") {
     // Open Tab
}

Answer 2

Find my answer here: Launch a fragment in my Android application from the notification bar . I don't think it's much different than adding extras to your Intent, but it's good to make use of Android's action-idea.

Send the action to your notify function:

public static void notify(Context context, String message, String  action) {

    action = action.toUpperCase();

    //...

    Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(context.getPackageName());

    if(action != null && launchIntent != null){         
        launchIntent.setAction(action);         
    }

    PendingIntent pendingIntent = PendingIntent.getActivity(context, -1, launchIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    notification.when = System.currentTimeMillis();  
    notification.flags |= Notification.FLAG_AUTO_CANCEL; 

    // Set the notification and register the pending intent to it
    notification.setLatestEventInfo(context, appName, message, pendingIntent);

    // Trigger the notification
    notificationManager.notify(0, notification);
}

And then get the action and launch the appropriate fragment.