open apps after click on notification, but I need to open my MainActivity instead of RegisterActivity

Question

I am new in android programming, I want to open my MainActivity after click on Notification, But I am not getting how to do that, and I defined action.Main and category.LAUNCHER in RegisterActivity which I open first on launch of apps, but I want to open MainActivity when I click on Notification, Please help me out and Thanks

<activity
            android:name=".RegisterActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>
        </activity>

        <activity
            android:name=".MainActivity"
            android:configChanges="orientation|keyboardHidden"
            android:label="@string/app_name" >
        </activity>

        <activity
            android:name=".UnregisterActivity"
            android:label="@string/app_name">
        </activity>

Answer 1

try this code snippet.

Intent intent = new Intent(context, MainActivity.class);
int requestID = (int) System.currentTimeMillis();
PendingIntent contentIntent = PendingIntent.getActivity(context, requestID,
            intent, 0); 
NotificationCompat.Builder builder = new NotificationCompat.Builder(
                    context);
            notification = builder.setContentIntent(contentIntent)
                    .setSmallIcon(icon).setTicker(appname).setWhen(when)
                    .setAutoCancel(true).setContentTitle(appname)
                    .setContentText(message).build();

            notificationManager.notify((int) when, notification);

I think it will help.

Answer 2

In the activity where you are creating the notification you must declare a pending intent which will be the class triggered on click using:

Intent intent = new Intent(this, NotificationReceiverActivity.class); PendingIntent pIntent = PendingIntent.getActivity(this, 0, intent, 0);

In case of GCM notification

you can use something like this

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    // Explicitly specify that GcmIntentService will handle the intent.
    ComponentName comp = new ComponentName(context.getPackageName(),
            GcmIntentService.class.getName());
    // Start the service, keeping the device awake while it is launching.
    startWakefulService(context, (intent.setComponent(comp)));
    setResultCode(Activity.RESULT_OK);
}

}

where GcmIntentService.class can be your activity to be called on notification click

public class GcmIntentService extends IntentService {
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;

public GcmIntentService() {
    super("GcmIntentService");
}

@Override
protected void onHandleIntent(Intent intent) {
    Bundle extras = intent.getExtras();
    GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
    // The getMessageType() intent parameter must be the intent you received
    // in your BroadcastReceiver.
    String messageType = gcm.getMessageType(intent);

    if (!extras.isEmpty()) {  // has effect of unparcelling Bundle
        /*
         * Filter messages based on message type. Since it is likely that GCM
         * will be extended in the future with new message types, just ignore
         * any message types you're not interested in, or that you don't
         * recognize.
         */
        if (GoogleCloudMessaging.
                MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
            sendNotification("Send error: " + extras.toString());
        } else if (GoogleCloudMessaging.
                MESSAGE_TYPE_DELETED.equals(messageType)) {
            sendNotification("Deleted messages on server: " +
                    extras.toString());
        // If it's a regular GCM message, do some work.
        } else if (GoogleCloudMessaging.
                MESSAGE_TYPE_MESSAGE.equals(messageType)) {
            // This loop represents the service doing some work.
            for (int i=0; i<5; i++) {
                Log.i(TAG, "Working... " + (i+1)
                        + "/5 @ " + SystemClock.elapsedRealtime());
                try {
                    Thread.sleep(5000);
                } catch (InterruptedException e) {
                }
            }
            Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());
            // Post notification of received message.
            sendNotification("Received: " + extras.toString());
            Log.i(TAG, "Received: " + extras.toString());
        }
    }
    // Release the wake lock provided by the WakefulBroadcastReceiver.
    GcmBroadcastReceiver.completeWakefulIntent(intent);
}
}