public class AppAplication extends Application {
    public static RequestQueue sRequestQueue;

    @Override
    public void onCreate() {
        super.onCreate();
        sRequestQueue = RequestQueueUtil.getRequestQueue(this);
//        Tencent tencent = Tencent.createInstance("1106553928",this);
        registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {
            @Override
            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {

            }

            @Override
            public void onActivityStarted(Activity activity) {

            }

            @Override
            public void onActivityResumed(Activity activity) {
                ScreenLightUtil.screenLighting(activity,true);

            }

            @Override
            public void onActivityPaused(Activity activity) {

            }

            @Override
            public void onActivityStopped(Activity activity) {

            }

            @Override
            public void onActivitySaveInstanceState(Activity activity, Bundle outState) {

            }

            @Override
            public void onActivityDestroyed(Activity activity) {

            }
        });
    }
}
 

螢幕常亮工具類

/**
 * 螢幕常亮工具類
 * Created by bianshaopeng
 * on 2018/1/29.
 */

public class ScreenLightUtil {
    public static boolean IsLighting = false;

    /**
     *
     * @param activity 當前物件
     * @param IsLingt 螢幕常亮開關 true 螢幕常亮開啟 false 螢幕常亮關閉
     */
    public static void screenLighting(Activity activity,boolean IsLingt){
        Window window = activity.getWindow();
        if (IsLingt != IsLighting){
            window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        }else {
            window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        }


    }
}