如何获取手机屏幕信息

import display from '@ohos.display'; 
 
@Entry 
@Component 
struct Index { 
  @State message: string = 'Hello World'; 
  private screenWidth: number = 0; 
  private screenHeight: number = 0; 
 
  aboutToAppear() { 
    try { 
      this.screenWidth = display.getDefaultDisplaySync().width; 
      this.screenHeight = display.getDefaultDisplaySync().height; 
    } catch (e) { 
      console.error('Fail with code: ' + JSON.stringify(e)); 
    } 
  } 
 
  build() { 
    Row() { 
      Column() { 
        Button(this.message) 
          .onClick(() => { 
            console.info('---->width: ' + this.screenWidth); 
            console.info('---->height: ' + this.screenHeight); 
          }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}