监听Activity的生命周期的方式。

分享一个利用ActivityLifecycleCallbacks 监听android Activity 生命周期的方法。

实现步骤如下：

1、实现ActivityLifecycleCallbacks.java 类在对应的生命周期方法里面实现自己需要做的事情 （我这里只打印一个Log）。

public class ActivityLifecycle implements Application.ActivityLifecycleCallbacks {
    private static final String TAG = "ActivityLife";
    @Override
    public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
        android.util.Log.d(TAG,activity.getClass().getSimpleName()+"...onCreate");
    }
    @Override
    public void onActivityResumed(Activity activity) {
        android.util.Log.d(TAG,activity.getClass().getSimpleName()+"...onResumed");
    }

    @Override
    public void onActivityPaused(Activity activity) {
        android.util.Log.d(TAG,activity.getClass().getSimpleName()+"...onPaused");
    }

    @Override
    public void onActivityStopped(Activity activity) {
        android.util.Log.d(TAG,activity.getClass().getSimpleName()+"...onStopped");
    }
    @Override
    public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
        android.util.Log.d(TAG,activity.getClass().getSimpleName()+"...onSaveInstanceState");
    }

    @Override
    public void onActivityDestroyed(Activity activity) {
        android.util.Log.d(TAG,activity.getClass().getSimpleName()+"...onActivityDestroyed");

    }
}

2、继承Applicaton 在onCreate 方面里面注册下即可：

public class MyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        registerActivityLifecycleCallbacks(new ActivityLifecycle());
    }

}

3、接下来看下打印的Log

01-01 15:14:59.869 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onCreate
01-01 15:14:59.908 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onStarted
01-01 15:14:59.913 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onResumed
01-01 15:15:03.511 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onPaused
01-01 15:15:04.072 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onStopped
01-01 15:15:06.412 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onCreate
01-01 15:15:06.450 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onStarted
01-01 15:15:06.454 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onResumed
01-01 15:15:54.377 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onPaused
01-01 15:15:54.382 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onSaveInstanceState
01-01 15:15:54.398 7484-7484/com.transsion.androiddemofactory D/ActivityLife: MainActivity...onStopped

就这么简单的完成了对activity 生命周期的监听是不是很简单呢! 笑脸.jpg