如何以编程方式关闭沉浸式阅读器？

import android.view.View;

// 获取当前活动的窗口对象
Window window = getWindow();

// 移除全屏标志位
window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

// 显示系统UI
window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);

// 获取当前应用程序对象
UIApplication *application = [UIApplication sharedApplication];

// 显示状态栏
[application setStatusBarHidden:NO];

// 修改CSS样式
document.documentElement.style.overflow = 'auto';
document.body.style.overflow = 'auto';

// 使用JavaScript API
if (document.exitFullscreen) {
  document.exitFullscreen();
} else if (document.mozCancelFullScreen) {
  document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
  document.webkitExitFullscreen();
}