apicloud实现图片保存

      savePicture (imgUrl) {
        let that = this
        this.$vux.confirm.show({
          title: '提示',
          content: '确认保存图片到相册',
          onConfirm () {
            let timestamp = new Date().getTime()
            let format = 'kedui' + timestamp + '.jpg'
            api.download({
              url: imgUrl,
              savePath: 'fs://' + format,
              encode: false,
              report: false,
              cache: false,
              allowResume: true
            },function(ret, err){
              if (ret.state == 1) {
                api.saveMediaToAlbum({
                  path: 'fs://' + format
                }, function(ret, err) {
                  if (ret && ret.status) {
                    that.$vux.toast.text('图片已经保存到相册')
                  } else {
                    that.$vux.toast.text('保存失败')
                  }
                });
              }
            })
          }
        })
      },