Android 所有应用程序中的全屏切换

在上一篇文章中，我尝试了下一个代码：

if (isChecked)
            {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
            }
        else
            {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }

---

这是工作，但只有一项活动。如何为所有应用程序执行此操作？

创建一个

活动

类，其他所有类

都扩展它。比如说

public abstract class BaseActivity extends AppCompatActivity {
    protected abstract boolean toggleFullScreen();

    @Override protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (toggleFullScreen()) {
            //fullScreen
        }
    }
}

现在，不要在您的另一个
活动中扩展
AppCompatActivity
，而是扩展
BaseActivity
创建一个
活动
类，其他所有类都扩展它。比如说

public abstract class BaseActivity extends AppCompatActivity {
    protected abstract boolean toggleFullScreen();

    @Override protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (toggleFullScreen()) {
            //fullScreen
        }
    }
}

现在，不要在其他
活动中扩展
AppCompatActivity
，而是扩展
BaseActivity
始终在应用程序类下执行通用初始化

public class App extends Application {

    @Override
    public void onCreate() {
        super.onCreate();       
        onActivityLifecycleCallback();

    }

    private void onActivityLifecycleCallback() {
        registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {

           @Override
            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {

 if (isChecked)
            {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
            }
        else
            {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }
            }


        });
    }

}

或

始终在应用程序类下执行通用初始化

public class App extends Application {

    @Override
    public void onCreate() {
        super.onCreate();       
        onActivityLifecycleCallback();

    }

    private void onActivityLifecycleCallback() {
        registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {

           @Override
            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {

 if (isChecked)
            {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
            }
        else
            {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }
            }


        });
    }

}

或