Sending data from broadcastreceiver to a custom thread in android not working?

Question

I have 3 threads : UI Thread (MainActity thread), Thread1 and Thread2 . UI Thread starts Thread1 and Thread1 starts Thread2

There is a MainActity class variable that I want to instantiate. What I did was using MainActivity.this.runOnUiThread(new Runnable() {...} to instantiate a TextView from a broadcastReceiver. But I thought that Thread2 would have the new value of that text view. It does not. It still has the initial value (ie before the private boradcastreceiver alters it. How can I get the new value in Thread2 ?

Below is how my code looks like :

    public class MainActivity extends AppCompatActivity {

    TextView mytxtView; //Use to bind a TextView from UI layout

    @Override
        protected void onCreate(Bundle savedInstanceState) {

        mytxtView = (TextView) findViewById(R.id.mytxtView);
        mytxtView.setText("Value 1");
        Thread thread1 = new Thread(new Thread1());
                thread1.start();
        }

        public void onResume() {
            registerReceiver(myReceiver, new IntentFilter("android.provider.Telephony.SOME_TELEPHONY_INTENT_ACTION"))
        }

        private class Thread1 extends Thread{
           @Override
        public void run() {
           Thread thread2 = new Thread(new Thread2());
                thread2.start();
         }
        }

        private class Thread2 extends Thread{
           @Override
        public void run() {

         Thread.sleep(45000) ; //just to make sur myReceiver does its job
 Toast.makeText(getApplicationContext(),myTxtView.getText(),Toast.LENGTH_LONG).show(); 
// This shows "Value 1" instead of "Value 2"
         }
        }

        BroadcastReceiver myReceiver = new BroadcastReceiver() {

            @Override
            public void onReceive(Context context, Intent intent) {
              if (intent.getAction().
                    equals("android.provider.Telephony.SOME_TELEPHONY_INTENT_ACTION")){
              //do some work

               MainActivity.this.runOnUiThread(new Runnable() {

                            @Override
                            public void run() {
                                myTxtView.setText("Value 2");
                            }
            }}
    }

Answer 1

Issue : your are just registering your broadcast but your are never triggering it so you need to trigger the broadcast to to execute onReceive method using sendBroadcast(yourBroadcastIntent).

Try

public void onResume() {
    registerReceiver(myReceiver, new IntentFilter("android.provider.Telephony.SOME_TELEPHONY_INTENT_ACTION"));
    sendBroadcast(new Intent(""android.provider.Telephony.SOME_TELEPHONY_INTENT_ACTION""));        
   }

And no need of runOnUiThread in receiver , as @greenapps has already mentioned it as well

And it setText to set the text as

myTxtView.setText("Value 2");

though seems like a typo info.myTxtView("Value 2");

Update : Working Project files repo along with screenshot to demonstrate the working state with provided screenshot.