Android - howto pass data to the Runnable in runOnUiThread?

Question

I need to update some UI and do it inside of the UI thread by using runOnUiThread
Now the data for the UI comes from the other Thread, represented by

Answer 1

If you want to avoid using an intermediate final variable (as described by Dan S), you can implement Runnable with an additional method to set Data:

public class MyRunnable implements Runnable {
  private Data data;
  public void setData(Data _data) {
    this.data = _data;
  }

  public void run() {
    // do whatever you want with data
  }
}

You can then call the method like this:

public void OnNewSensorData(Data data) {
  MyRunnable runnable = new MyRunnable();
  runnable.setData(data);
  runOnUiThread(runnable);
}

you could also make MyRunnable's constructor take in the Data instance as an argument:

public class MyRunnable implements Runnable {
  private Data data;
  public MyRunnable(Data _data) {
    this.data = _data;
  }

  public void run() {
    ...
  }
}

and then just say runOnUiThread(new MyRunnable(data));