CODEWITHSUNDEEP
androidnotifications
Ritu
Ritu

Reputation: 1105

delete notification from android

I want to give option of deleting my notification in the activity which gets opened after clicking it from notification bar. I am using the following code:

nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        Log.i(TAG, "after NotificationManager");
        Intent intent = new Intent(this,test.class);
        intent.putExtra("title", title);
        intent.putExtra("subject", subject);
        intent.putExtra("notificationid", count);
        Log.i(TAG, title);
        Log.i(TAG, subject);
        PendingIntent pi = PendingIntent.getActivity(this, count, intent,0);



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

        n.setLatestEventInfo(this, title, subject, pi);
        n.defaults = Notification.DEFAULT_LIGHTS;

        nm.notify(count, n);

And my test.java looks like this:

public class test extends Activity {


    TextView Title;
    TextView Subject;
    Button Clear;
    protected int notificationid;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.test);  

        String title="";
        String subject="";



        Bundle extras = getIntent().getExtras();

        if(extras !=null) {
             title = extras.getString("title");
             subject = extras.getString("subject");
             notificationid = extras.getInt("notificationid");
        }
        Title = (TextView) findViewById(R.id.Title);
        Subject = (TextView) findViewById(R.id.Subject);
        Title.setText(title);
        Subject.setText(subject);
      Clear.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View view)
            {     

                  NotificationManager nm ;
                 nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
                Log.i(getClass().getSimpleName(), " onClick inside test caled....");
                nm.cancel(notificationid);


            }
        });

    }
}

But application is getting closed unexpectedly. Can anyone help me out in this? Thanks!!

Upvotes: 1

Views: 936

Answers (4)

mac_cz
mac_cz

Reputation: 171

Try to use FLAG_AUTO_CANCEL:

n.flags |= Notification.FLAG_AUTO_CANCEL;

Bit to be bitwise-ored into the flags field that should be set if the notification should be canceled when it is clicked by the user.

Upvotes: 0

Kartik Domadiya
Kartik Domadiya

Reputation: 29968

You are missing 

Clear=(Button) findViewById(R.id.ClearButtonId);

this in your test Class ?

It must be the problem. You might be getting NullPointerException as you have not parsed the Button component and you are trying to use it directly.

Upvotes: 2

Amos M. Carpenter
Amos M. Carpenter

Reputation: 4958

Without being able to see your LogCat output, it's hard to tell what exactly the error is, but from looking at the code (this may of course be wrong if you've only pasted partial code), you're not initialising your notificationid variable in the case where extras == null. If you're developing with Eclipse, have a look in the LogCat view and find the error stacktrace.

Edit after seeing Kyle's answer: what he said about LogCat ;-)

Upvotes: 1

Kyle Clegg
Kyle Clegg

Reputation: 39480

What is the error associated with the unexpected code? Can you give details on the exception causing the crash?

Do you use LogCat? If not, check out http://developer.android.com/guide/developing/tools/logcat.html. To view the logcat logs directly in the command prompt, open the command prompt and go to the directory where your android sdk is found. Run adb logcat. You should start seeing a printout of the errors, warnings, etc. generated by logcat.

Once you're able to see what the problem is using logcat (it will tell you NullPointerException, ResourceNotFoundException, etc and the line of code that caused the problem), if you can't figure out the source of the crash from that then paste the error info here.

Upvotes: 1

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