HarmonyOS 鸿蒙Next：怎么监听整个app应用的运行状态，应用级别的前后台切换的监听

关于监听提供window.on(“windowEvent”)接口

参考文档：1.1 Ability Kit（程序框架服务）

参考Demo：

onWindowStageCreate(windowStage: window.WindowStage) { 
  // Main window is created, set main page for this ability 
  hilog.info(0x0000, ‘testTag’, ‘%{public}s’, ‘Ability onWindowStageCreate’); 
windowStage.loadContent(‘pages/AppGeoLocation’, (err, data) => {
if (err.code) {
hilog.error(0x0000, ‘testTag’, ‘Failed to load the content. Cause: %{public}s’, JSON.stringify(err) ?? ‘’);
return;
}
windowStage.getMainWindowSync().on(“windowEvent”, (data) => {
if (data == window.WindowEventType.WINDOW_SHOWN) {
console.log(“App is in Foreground”)
}
else if(data == window.WindowEventType.WINDOW_HIDDEN){
console.log(“App is in Background”)
}
})
hilog.info(0x0000, ‘testTag’, ‘Succeeded in loading the content. Data: %{public}s’, JSON.stringify(data) ?? ‘’);
});
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>