@Override
    public DownloadStreamTask(Context _c) {
      mContext = new WeakReference<Context>(_c);
      // dialog = new ProgressDialog(myact.this);

      text1 = (TextView) findViewById(R.id.textView1);

      Button cancelbtn = (Button) findViewById(R.id.ButtonCancel);
      cancelbtn.setOnClickListener(
          new View.OnClickListener() {
            @Override
            public void onClick(View v) {
              // Do something in response to button click
              cancel(true);
            }
          });

      cancelbtn.setEnabled(true);
    }