开发小技巧之在Application中监听App中的Activity的生命周期

来源：互联网发布：长沙unity3d招聘编辑：程序博客网时间：2024/05/22 01:35

在有一些场景下，需要我们在app从后台进程到前台进程的切换过程中，做一些操作，如展示一个公司广告页面等等情况。这个时候，我们可以在我们的Application中来监听当前App的状态，Google已经给我们封装好了方法:

public class MyApplication extends Application {    @Override    public void onCreate() {        super.onCreate();        Log.i("justh","application oncreate");        registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {            @Override            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {                Log.i("justh","onActivityCreated");            }            @Override            public void onActivityStarted(Activity activity) {                Log.w("justh","onActivityStarted");            }            @Override            public void onActivityResumed(Activity activity) {                Log.e("justh","onActivityResumed");            }            @Override            public void onActivityPaused(Activity activity) {                Log.i("justh","onActivityPaused");            }            @Override            public void onActivityStopped(Activity activity) {                Log.i("justh","onActivityStopped");            }            @Override            public void onActivitySaveInstanceState(Activity activity, Bundle outState) {                Log.i("justh","onActivitySaveInstanceState");            }            @Override            public void onActivityDestroyed(Activity activity) {            }        });    }}

对，就是这个registerActivityLifecycleCallbacks方法，具体的生命周期该调用的方法应该就不需要过多说明了吧，嘿嘿!

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