Android, java - Unable to update variable from asynctask

Question

Here is the code

Variable declared

 public String gpu2dcurent = \"1234567\";

Asynctask, after finished it should update variable gpu2dc

Answer 1

I have a doubt you are trying to set text of TextView before completion of your Asynctask.

Yes, either make it, static public String gpu2dcurent = "1234567";

Or, set Text of TextView in onPostExecute()

protected void onPostExecute(String result) {
         // Pass the result data back to the main activity
        gpu2dcurent = result;
         //Toast.makeText(getBaseContext(), result,
                //Toast.LENGTH_SHORT).show();
         gpu.this.data = result;  
         if (gpu.this.pd != null) {
             //gpu.this.pd.dismiss();
         }
      tx.setText(gpu2dcurent);
     }
    }

Update:

After update your code in question,

change this line,

new readgpu2d().execute("blablabla");

to

new readgpu2d().execute("blablabla").get();