Calling the Bound Service from Main Activity

In the last Article you learnt how to bind MainActivity with BoundService.

Time for you to call the displayDistance method to display the distance traveled. You can create a new method which will return the distance computed. This method will create a Handler and invoke the Service every second.

private void displayDistance() {
    final Handler handler = new Handler();
    handler.post(new Runnable() {
        @Override
        public void run() {
            double distance = 0;
            if(mDistanceTraveledService != null){
                distance = mDistanceTraveledService.getDistanceTraveled();
            }
            distanceTraveled.setText(String.valueOf(distance));
            handler.postDelayed(this, 1000);
        }
    });
}

Next add a TextView in the Layout XML file to display this.

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:gravity="center"
    android:layout_margin="15dp"
    android:id="@+id/displayDistanceId"
    android:text="100metres"/>

Full source code is available here

Author: Ankur

I am Enthusiastic about Learning new things and sharing my Knowledge. I like programming and have a pretty good background in Computer Science. View all posts by Ankur