Android ProcessLifecycleOwner

这个杀手不太累2025-10-21 15:39

Android ProcessLifecycleOwner

针对整个应用程序生命周期的监听，和activity数量没有关系
onCreate只会调用一次，onDestory不会调用

实现 DefaultLifecycleObserver

kotlin 复制代码

class ApplicationObserver : DefaultLifecycleObserver {

    companion object{
        const val TAG ="ApplicationObserver"
    }
    
    override fun onCreate(owner: LifecycleOwner) {
        Log.i(TAG,"onCreate")
    }

    override fun onStart(owner: LifecycleOwner) {
        Log.i(TAG,"onStart")
    }

    override fun onResume(owner: LifecycleOwner) {
        Log.i(TAG,"onResume")
    }

    override fun onPause(owner: LifecycleOwner) {
        Log.i(TAG,"onPause")
    }

    override fun onStop(owner: LifecycleOwner) {
        Log.i(TAG,"onStop")
    }

    override fun onDestroy(owner: LifecycleOwner) {
        Log.i(TAG,"onDestroy")
    }
}

在Application中添加

kotlin 复制代码

class MyApplication : Application() {

    override fun onCreate() {
        super.onCreate()
        ProcessLifecycleOwner.get().lifecycle
            .addObserver(ApplicationObserver())
    }
}

通过日志观察，在应用启动会调用 onCreate 方法，退出后台或者kill进程，不会调用 onDestory 方法