A Extension of Android Lifecycle Management for Kotlin

init {
       onStart {
           service.start()
       }
       onResume {
           service.refresh()
       }
 }

Get Started

add maven url in to your build.gradle (Normally in root project)

repositories {
    maven {
        url  "http://harrytylenol97.bintray.com/maven"
    }
}

And add library into module dependencies

<!> You should use support lifecycle library beacuse it needed

compile 'com.tylenol.library:lifecyclin:0.2.1'

---

Features

Add User Defined LifecycleObserver to LifecycleRegistry

First you should define class which inherits LifecycleObserver

class SampleActivity : LifecycleCompatActivity() {
    var myListener = MyListener()
    // ...
}

// ...
class MyListener : LifecycleObserver { /**/ }

addObserver(myListener) // Method 1
val myListener = MyListener().registerObserver(this) // Method 2

You can also add 2 more Observers as vararg

addObserver(myListener).addObserver(myLocationListener).addObserver(myGoogleApiClientListener)
addObserver(myListener, myLocationListener, myGoogleApiClientListener)

Define Units(functions) to each lifecycle components at once (Automatically Add it as Observer to LifecycleRegistry)

init {
    val listener : MyLocationListener
    onCreate { 
       listener = MyLocationListener()     
    }
    onStart { 
       listener.start()
    }
    onStop { 
       listener.stop()
    }
}

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    
    val service = MyService()
    onResume {
        service.resume()
    }
    onPause {
        service.pause()
    }
    
}

Check Lifecycle Status

check current lifecycle status and return true if current status is matched

if (isCreated()) { // Do something cooler }

ViewModel

From ViewModelProviders

val myViewModel = MyViewModel().asViewModel(this) // 'this' is AppCompatActivity
myViewModel.getUsers().initObserver(this) {
    user -> doSomething(user)
}