如何设置沉浸式状态栏
==========

1.  获取应用主窗口。通过getMainWindow接口获取应用主窗口。
2.  实现沉浸式效果。有以下两种方式：
    *   方式一：调用setWindowSystemBarEnable接口，设置导航栏、状态栏不显示，从而达到沉浸式效果。
    *   方式二：调用setWindowLayoutFullScreen接口，设置应用主窗口为全屏布局；然后调用setWindowSystemBarProperties接口，设置导航栏、状态栏的透明度、背景/文字颜色以及高亮图标等属性，使之保持与主窗口显示协调一致，从而达到沉浸式效果。
3.  加载显示沉浸式窗口的具体内容。通过loadContent接口加载沉浸式窗口的具体内容。
    
    import { UIAbility } from '@kit.AbilityKit';
    import { window } from '@kit.ArkUI';
    import { BusinessError } from '@kit.BasicServicesKit';
    
    
    export default class EntryAbility extends UIAbility {
      onWindowStageCreate(windowStage: window.WindowStage) {
        // 1.Get the main window of the application.
        let windowClass: window.Window | undefined = undefined;
        windowStage.getMainWindow((err: BusinessError, data) => {
          if (err.code) {
            console.error('Failed to obtain the main window. Cause: ' + JSON.stringify(err));
            return;
          }
          windowClass = data;
          console.info('Succeeded in obtaining the main window. Data: ' + JSON.stringify(data));
    
    
          // 2.Realize immersive effects. Method 1: Set the navigation bar and status bar to not display.
          let names = \[\];
          windowClass.setWindowSystemBarEnable(names).then(() => {
            console.info('Succeeded in setting the system bar to be visible.');
          }).catch((err: BusinessError) => {
            console.error('Failed to setting the system bar to be visible. Cause: ' + JSON.stringify(err));
          });
          // 2.Realize immersive effects. Method 2: Set the window to a full screen layout, and coordinate with the transparency, background/text color, and highlighted icons of the navigation bar and status bar to maintain consistency with the main window display.
          let isLayoutFullScreen = true;
          windowClass.setWindowLayoutFullScreen(isLayoutFullScreen).then(() => {
            console.info('Succeeded in setting the window layout to full-screen mode.');
          }).catch((err: BusinessError) => {
            console.error('Failed to setting the window layout. Cause: ' + JSON.stringify(err));
          });
          let sysBarProps: window.SystemBarProperties = {
            statusBarColor: '#ff00ff',
            navigationBarColor: '#00ff00',
            // The following two attributes are supported starting from API Version 8
            statusBarContentColor: '#ffffff',
            navigationBarContentColor: '#ffffff'
          };
          windowClass.setWindowSystemBarProperties(sysBarProps).then(() => {
            console.info('Succeeded in setting the system bar properties.');
          }).catch((err: BusinessError) => {
            console.error('Failed to setting the system bar properties. Cause: ' + JSON.stringify(err));
          });
        })
        // 3.Load the corresponding target page for the immersive window.
        windowStage.loadContent("pages/page2", (err) => {
          if (err.code) {
            console.error('Failed to load the content. Cause:' + JSON.stringify(err));
            return;
          }
          console.info('Succeeded in loading the content.');
        });
      }
    };