获取窗口内容规避的区域值全部都是0

public static getStatusHeight(): Promise<number> { 
return this.windowStage.getMainWindow()…then(currentWindow => { 
let avoidArea = currentWindow.getWindowAvoidArea(window.AvoidAreaType.TYPE_SYSTEM) 
let statusHeight = avoidArea.topRect.height; 
console.log("statusHeight: ", JSON.stringify(avoidArea)); 
return statusHeight; 
}).catch((e) => { 
hilog.error(0x0000, TAG, ‘%{public}s’, 'Failed to obtain the default display object. Code: ’ + JSON.stringify(e)); 
return 0; 
}) 
}

onWindowStageCreate(windowStage: window.WindowStage): void { 
  // Main window is created, set main page for this ability 
  hilog.info(0x0000, ‘testTag’, ‘%{public}s’, ‘Ability onWindowStageCreate’); 
windowStage.loadContent(‘pages/Page1’, (err, data) => { 
if (err.code) { 
hilog.error(0x0000, ‘testTag’, ‘Failed to load the content. Cause: %{public}s’, JSON.stringify(err) ?? ‘’); 
return; 
} 
// 将windowStage进行持久化以便子窗口调用 
AppStorage.setOrCreate(“windowStage”,windowStage); 
hilog.info(0x0000, ‘testTag’, ‘Succeeded in loading the content. Data: %{public}s’, JSON.stringify(data) ?? ‘’); 
}); 
}