In the last Article you learnt about Android Services and the difference between a bound and a started service. In this Article you will learn how to call the IntentService you created earlier.
To create a started service you need to extend the IntentService class.
public class SampleService extends IntentService
Let’s take a simple example to illustrate how this works.
In the onHandleIntent method you will add a Log.
@Override
protected void onHandleIntent(Intent intent) {
Log.v(TAG, "In onHandleIntent. Message will be printed after 10sec");
if (intent != null) {
synchronized (this){
try {
wait(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.v(TAG, "Service started");
}
}
}
To call this service you will add a button to the content_main.xml file
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:layout_margin="15dp"
android:id="@+id/callSampleServiceId"
android:text="Start Service"
android:background="@android:color/holo_blue_dark"
android:textColor="@android:color/white"/>
On click of this button an explicit intent will be called.
if(v.getId() == R.id.callSampleServiceId){
Log.v(TAG, "Service Button Clicked");
Intent intent = new Intent(this, SampleService.class);
startService(intent);
}
View the complete source code here.
