Start a Service from an Activity

The application can start the service with the help of the Context.startService method. The method will call the onCreate method of the service if service is not already created; else onStart method will be called. Here is the code:

Intent serviceIntent = new Intent();
serviceIntent.setAction("com.testApp.service.MY_SERVICE");
startService(serviceIntent);

The API Demos have some examples that launch services.

Use a Context.startService() method.

And read this.

in kotlin you can start service from activity as follow :

   startService!!.setOnClickListener { startService() }
 
   private fun startService(){
    startService(Intent(this, HitroService::class.java))
   }