How to start activity when user clicks a notification?

Question

I am attempting to convert some code I found in a tutorial for my own use. Originally, the code launched the system contacts list when the user would click a notification ge

Answer 1

check this code

            public class TestActivity extends Activity {
private static final int UNIQUE_ID = 882;

public static NotificationManager nm;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        Intent navigationIntent = new Intent();


    navigationIntent.setClass(classname.this, MainActivity.class);


    PendingIntent pi = PendingIntent.getActivity(this, 0, navigationIntent,
            0);

    String body = "New notificattion added!!!";
    String title = "Notification";


    Notification n = new Notification(R.drawable.icon, body,
            System.currentTimeMillis());

            //this is for giving number on the notification icon

    n.number = Integer.parseInt(responseText);

    n.setLatestEventInfo(this, title, body, pi);
    n.defaults = Notification.DEFAULT_ALL;

    nm.notify(UNIQUE_ID, n);

Answer 2

I figured out the problem. I forgot to include the package name in the activity declaration in the Manifest file.

Wrong:

activity android:name=".ViewTarget" android:label="@string/app_name" 

Correct:

activity android:name="com.kjdv.gpsVegas.ViewTarget" android:label="@string/app_name" 

Answer 3

Can you try removing the Intent filter, so it looks like this:

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

Also, not sure if this code will work:

ourClass = Class.forName("com.kjdv.gpsVegas.ViewTarget"); Intent startMyActivity = new Intent(context, ourClass);

Can you try it like this instead:

Intent startMyActivity = new Intent(context, ViewTarget.class);

Answer 4

Which Android version are you running on? You might wanna try using NotificationCompat instead. This class is include in the latest support package.

Intent notificationIntent = new Intent(context, ViewTarget.class);
PendingIntent contentIntent = PendingIntent.getActivity(context,
                0, notificationIntent,
                PendingIntent.FLAG_CANCEL_CURRENT);

NotificationManager nm = (NotificationManager) context
                .getSystemService(Context.NOTIFICATION_SERVICE);

Resources res = context.getResources();
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setContentIntent(contentIntent)
       .setSmallIcon(R.drawable.app_icon)
       .setLargeIcon(BitmapFactory.decodeResource(res, R.drawable.app_icon))
       .setTicker(payload)
       .setWhen(System.currentTimeMillis())
       .setAutoCancel(true)
       .setContentTitle("Message")
       .setContentText(payload);
Notification n = builder.getNotification();

n.defaults |= Notification.DEFAULT_ALL;
nm.notify(0, n);

EDIT: I know this is an old thread/question but this answer helped me for showing the activity when tapping the notification. For those people that this isn't working is probably because you haven't "registered" the activity in your manifest. For example:

<activity
   android:name="com.package.name.NameOfActivityToLaunch"
   android:label="Title of Activity" >
   <intent-filter>
     <action android:name="com.package.name.NAMEOFACTIVITYTOLAUNCH" />

     <category android:name="android.intent.category.DEFAULT" />
   </intent-filter>
</activity>

And, hopefully, this should work. Hope it helped...

Answer 5

In order to launch an Activity from an Intent, you need to add a flag:

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

This is true even if you declare the class in the Intent's constructor.

Answer 6

you should set action and category for Intent.

Intent startMyActivity = new Intent(context, ourClass);
startMyActivity .setAction(Intent.ACTION_MAIN);
startMyActivity .addCategory(Intent.CATEGORY_LAUNCHER);

it works