Jetpack学习之Lifecycle

class MyLocationListener: LifecycleObserver{
    private val TAG = MyLocationListener::class.java.simpleName
    private lateinit var onLocationChangedCallback: OnLocationChangedCallback

    @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
    private fun startGetLocation(){
        Log.d(TAG, "startGetLocation()")
    }

    @OnLifecycleEvent(Lifecycle.Event.ON_STOP)
    private fun stopGetLocation(){
        Log.d(TAG, "stopGetLocation()")
    }

    fun setOnLocationChangedCallback(callback: OnLocationChangedCallback){
        this.onLocationChangedCallback = callback
    }

}

class LifecycleActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_lifecycle)

        val listener = MyLocationListener()
        listener.setOnLocationChangedCallback(object : OnLocationChangedCallback {
            override fun onChange() {

            }
        })
        // 将观察者与被观察者绑定
        lifecycle.addObserver(listener)
   }  
}