How to manage an activity from an AsyncTask

Question

I have two activities (Activity1 and Activity2) and one AsyncTask (AsyncTask1)

Activity1 has a button that on click gives control to Activity2, Activity2 has an AsyncTask and in that task's onPostExecute() I want to handle a TextView that is in Activity1.

Example:

Activity1

public class Activity1 extends RoboSherlockActivity {
  @Inject (R.id.name) EditText name;
  @Inject (R.id.mybutton) Button button;

  public void onCreate (Bundle savedInstanceState) {
   ...
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent activity2 = new Intent(context, Activity2.class);
                startActivity(activity2);
            }
        });
   ....
  }
}

Activity2

 public class Activity2 extends RoboSherlockActivity {
    @InjectView (R.id.name) EditText secret;

....
public boolean onCreateOptionsMenu(Menu menu) {
    menu.add("Save")
    return true;
}
...
@Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
    if (menuItem.getTitle().toString().equalsIgnoreCase("Save")) {
        new AsyncTask1(this, secret.getText().toString()).execute();
    }
    return true;
  }
}

AsyncTask1

public class AsyncTask1 extends RoboAsyncTask<String> {

   Activity2 activity;
   String secret;

   public AsyncTask1 (Activity2 activity, String secret) {
     this.activity = activity;
     this.secret = secret;
   }

   public String call() throws Exception {
     //call the server here
     return "";
   }

   protected void onSuccess(String result) {
     activity.finis();
     //HERE I WANT TO SET THE NAME: name.setText(result); //How can I do this??
   }
} 

Question

How can I set the name in the onSuccess of the AsyncTask?

Answer 1

Activity2 has an AsyncTask and in that task's onPostExecute() I want to handle a TextView that is in Activity1.

No you can't. You can use startActivtiyForResult in Activtiy1 and update textview

In Activity1

  Intent intent=new Intent(Activity.this,Activity2.class);  
  startActivityForResult(intent, 2);

Then

   @Override  
   protected void onActivityResult(int requestCode, int resultCode, Intent data)  
   {  
             super.onActivityResult(requestCode, resultCode, data);  

              // check if the request code is same as what is passed  here it is 2  
               if(requestCode==2)  
                     {  
                        String message=data.getStringExtra("key");   
                        textView1.setText(message);  

                     }  

 }  

In Activity2

 Intent intent;
   @Override
   protected void onCreate(Bundle savedInstanceState)
   super.onCreate(savedInstanceState);
   setContentView(R.layout.second);
   intent = getIntent();
   ...// rest of the code
 }

In onSuccess

 protected void onSuccess(String result) {
   intent.putExtra("key",value);  
   setResult(2,intent);  
   activity.finish();
 }