Java – Android broadcastreceiver onReceive updates textview in mainactivity

In mainactivity, I have a textview: textv1 I also have a method in mainactivity to update the text view:

public void updateTheTextView(final String t) {
    MainActivity.this.runOnUiThread(new Runnable() {
        public void run() {
            TextView textV1 = (TextView) findViewById(R.id.textV1);
            textV1.setText(t);
        }
    });
}

In the broadcasterreceiver, I need to update the text in textv1 in mainactivity

public class NotifAlarm extends BroadcastReceiver {
    @Override
    public void onReceive(Context context,Intent intent) {
            // other things done here like notification

            // NEED TO UPDATE TEXTV1 IN MAINACTIVITY HERE
    }
}

How can this be done? Broadcastreceiver runs from a service I can't change this code Can textv1 in mainactivity be accessed and changed from onreceive()? I tried many things but failed

Solution

In mainactivity, initialize the variables of mainactivity class as shown below

public class MainActivity extends Activity {
    private static MainActivity ins;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ins = this;     
    }

    public static MainActivity  getInstace(){
        return ins;
    }

    public void updateTheTextView(final String t) {
        MainActivity.this.runOnUiThread(new Runnable() {
            public void run() {
                TextView textV1 = (TextView) findViewById(R.id.textV1);
                textV1.setText(t);
            }
        });
    }
}


public class NotifAlarm extends BroadcastReceiver {
    @Override
    public void onReceive(Context context,Intent intent) {
        try {
            MainActivity  .getInstace().updateTheTextView("String");
        } catch (Exception e) {

        }           
    }
}