7.apicloud 保存图片到相册

var filename = "aaa_" + new Date().getTime() + ".jpg";
        var url = 'http://b-ssl.duitang.com/uploads/item/201803/30/20180330234706_stfoo.jpg';
        api.download({
            url: url,
            savePath: "fs://" + filename
        }, function(ret, err) {
            if (ret.state == 1) {
                api.saveMediaToAlbum({
                    path: "fs://" + filename
                }, function(ret, err) {
                    if (ret && ret.status) {
                        alert("保存成功");
                    } else {
                        alert('保存失败');
                    }
                });
            } else {
                alert("保存失败");
            }
        });