Difference between service and intent service in android.

Service :

             1. Service is using for complete the task in background. 

             2. It's a component of android. 

             3. All the component runs on main thread(ui thread). Hence Service also runs on main thread.                  It means that if we access the network content(like HttpUrlConnection) by using service,

                 then  ANR(Application Not Responding) may occur. If we want to access network content,                  then we have to make  separate thread in service. 

             4. The main thing about the service is that it runs always whether the given task is done or                      not. 

             5. For stopping the service,we have to stop this using stopService() method. 

Intent Service :

             1. Intent Service is a subclass of Service,which is used for complete the task in                                          background.

             2. It runs on a separate thread,means it doesn't block the main thread so that ANR error                            doesn't occur.

             3. Intent service use worker thread for execute the task,means if  we give it a lot of task to                        execute then it makes a  queue for all the task and perform all the task one by one. If all the                  task is completed then it destroy itself. We don't need to call the stop function.