《鸿蒙开发-答案之书》选择相册图片

《鸿蒙开发-答案之书》选择相册图片

选择相册图片，可以设定选择多少张。

直接上代码：

  /**
   * 选择图片
   * 注：官方说不用申请权限
   */
  public static  openGallery(maxSelectNumber:number,callBack:(result:string[])=>void) {
    if(maxSelectNumber){
      const photoSelectOptions = new photoAccessHelper.PhotoSelectOptions();
      photoSelectOptions.MIMEType = photoAccessHelper.PhotoViewMIMETypes.IMAGE_TYPE; // 过滤选择媒体文件类型为IMAGE
      photoSelectOptions.maxSelectNumber = maxSelectNumber; // 选择媒体文件的最大数目

      const photoViewPicker = new photoAccessHelper.PhotoViewPicker();
      photoViewPicker.select(photoSelectOptions).then((photoSelectResult: photoAccessHelper.PhotoSelectResult) => {
        if (photoSelectResult.photoUris.length > 0) {
          callBack(photoSelectResult.photoUris)
        }
      }).catch((err: BusinessError) => {
        console.error(`Invoke photoViewPicker.select failed, code is ${err.code}, message is ${err.message}`);
      })
    }else {
      showToast('已选素材数量达到上限')
    }
  }