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Android Threads and Services Threads in Android Handle it!

Gangadhar Vukkesala
Gangadhar Vukkesala
3,172 Points

not able to send message from main activity to thread

not able to send message from main activity to thread

MainActivity.java
public class MainActivity extends Activity {
  Button button;
  TwitterClient twitterClient = new TwitterClient();

  @Override
  public void onCreate(Bundle savedInstanceState) {
    setContentView(R.layout.activity_main);

    final TwitterThread twitterThread = new TwitterThread();
    twitterThread.setName("TwitterThread");
    twitterThread.start();

    button = (Button) findViewById(R.id.update_button);
    button.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v){

      }
    });
  }

  class TwitterThread extends Thread {
    @Override
    public void run() {
      TwitterHandler handler = new TwitterHandler();
      handler.sendEmptyMessage(0);
    }
  }

  public class TwitterHandler extends android.os.Handler {
        @Override
        public void handleMessage(Message msg) {
            twitterClient.update();
        }
    }
}

1 Answer

Raveesh Agarwal
Raveesh Agarwal
2,994 Points

Can you try initialising your twitter client inside onCreate?

public class MainActivity extends Activity {
  Button button;
  private TwitterClient twitterClient;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    setContentView(R.layout.activity_main);
     twitterClient = new TwitterClient();

    final TwitterThread twitterThread = new TwitterThread();
    twitterThread.setName("TwitterThread");
    twitterThread.start();

    button = (Button) findViewById(R.id.update_button);
    button.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v){

      }
    });
  }

  class TwitterThread extends Thread {
    @Override
    public void run() {
      TwitterHandler handler = new TwitterHandler();
      handler.sendEmptyMessage(0);
    }
  }

  public class TwitterHandler extends android.os.Handler {
        @Override
        public void handleMessage(Message msg) {
            twitterClient.update();
        }
    }
}

I haven't completed this course yet, but see if it fixes your issue. (Trying to punch above my weight class ATM.) Sorry if I couldn't help but try it and please tell me if it worked.