CODEWITHSUNDEEP
android
Bob Last
Bob Last

Reputation: 83

onBackPressed takes user back to main activity

Below I have a method that cancel my asynctask and ProgressDialog. The code works well but when you press the back button it stops everything as its suppose too but it will just leave the user staring at a unpopulated listview. So the idea here is that when the user clicks the back button it stops the asynctask and ProgressDialog and instead of just leaving them looking at a unpopulated listview I want it to also take them back to the main activity as well. Can anybody help me to make this possible?

@Override
public void onBackPressed() 
{              
    /** If user Pressed BackButton While Running Asynctask
        this will close the ASynctask.
     */
    if (mTask != null && mTask.getStatus() != AsyncTask.Status.FINISHED)
    {
        mTask.cancel(true);
    }          
    super.onBackPressed();
}


@Override
protected void onDestroy() {
    // TODO Auto-generated method stub


/** If Activity is Destroyed While Running Asynctask
        this will close the ASynctask.   */

 if (mTask != null && mTask.getStatus() != AsyncTask.Status.FINISHED)
 {
    mTask.cancel(true);
  }  

    super.onDestroy();

}

@Override
protected void onPause() {
    // TODO Auto-generated method stub


 if (pDialog != null)
 {
     if(pDialog.isShowing())
     {
         pDialog.dismiss();
     }
        super.onPause();

  }  

}

Upvotes: 1

Views: 1186

Answers (3)

abbasalim
abbasalim

Reputation: 3232

use this : getActivity = for fragment, for activity use ActivityName.this

 Intent intent = new Intent(getActivity(), MainActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);
            finishActivity(false);

Upvotes: 0

Squonk
Squonk

Reputation: 48871

Simply calling mTask.cancel(true); won't immediately cancel your AsyncTask. You need to periodically call isCancelled() in doInBackground(...) - if the result is true you need to return from doInBackground(...).

In this case, onPostExecute(...) will not be called and instead onCancelled() will be called and you can call finish() to terminate the Activity.

Upvotes: 0

prc
prc

Reputation: 860

Add finish(); after super.onBackPressed();

Upvotes: 1

Related Questions