Question

I have a simple AsyncTask whose doInBackground() calls a function fn1 which in turn simply calls another fn2. The result is a “Activity has leaked window” crash! When I call fn2 directly from doInBackground() everything works fine. Does that mean in a thread one cannot have more than 1 level of fn calling?( Thread-> fn1->fn2)

I am new to Java and android, so please bear with me if that is a basic question! Thnx.

My code algo is something ike this :

MyActivity:

MyLibrary myLib;

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.myXML);

    myLib = new MyLibrary(MyActivity.this);
    new myTask().execute();

}

private class myTask extends AsyncTask<Void, Void, Void> 
{

    @Override
    protected void onPreExecute() {
        progressDialog = ProgressDialog.show(MyActivity.this, "", "Fetching Data...");
    }
    @Override
    protected Void doInBackground(Void... params) {

            myLib.fn1();        
            return null;

    }

    @Override
    protected void onPostExecute(Void result) {

        progressDialog.dismiss();
    }
}

MyLibrary :

Context ctx;
String iVar;

public MyLibrary(Context context){
    this.ctx = context;
}

public void fn1()
{

  fn2();
  Log.d("TAG", "Function 1";
}

public void fn2()
{
   iVar = "100"; 
   Log.d("TAG", "Function 2";
}

Answer 1

Add the following in your Activity’s code:

@Override
protected void onPause() {
    super.onPause();

    if(progressDialog != null)
        progressDialog.dismiss();
}

It will dismiss the dialog window in case you move away from activity.