ios - UIActivity 自定义分享，触摸更多按钮时不显示缩略图图标

Question

我的应用支持 iOS 7+，我使用 UIActivity 图片大小:iPhone 60pt，iPad iOS 76pt，

当触摸更多按钮重新排序项目时，它无法在列表中显示图标。

代码如下:

class ZYShare {
class ActivityItem {
    init() {
        self.title = ""
        self.icon = ""
    }

    var title: String?
    var icon: String?
    var type: ShareType = ShareTypeAny
}

class CommonActivity: UIActivity {
    lazy var itemInfo = ActivityItem()

    override func prepareWithActivityItems(activityItems: [AnyObject]) {
        // do something

    }

    override func canPerformWithActivityItems(activityItems: [AnyObject]) -> Bool {
        return true
    }

    override class func activityCategory() -> UIActivityCategory {
        return UIActivityCategory.Action
    }

    override func activityType() -> String? {

        return NSLocalizedString(itemInfo.title ?? "", comment: "")
    }

    override func activityTitle() -> String? {
        return NSLocalizedString(itemInfo.title ?? "", comment: "")
    }

    override func activityImage() -> UIImage? {
        println(itemInfo.icon)

        if let icon = itemInfo.icon {
            return UIImage(named: icon)
        } else {
            return nil
        }
    }

    override func performActivity() {
        ShareSDK.showShareViewWithType(itemInfo.type
            , container: nil
            , content: publishContent
            , statusBarTips: false
            , authOptions: authOptions
            , shareOptions: options
            , result: handle)

        self.activityDidFinish(true)
    }
}

class QQActivity: CommonActivity {
    override init() {
        super.init()

        self.itemInfo.icon = "ShareToQQ"
        self.itemInfo.title = "QQ"
        self.itemInfo.type = ShareTypeQQ
    }
}

class WeChatSessionActivity: CommonActivity {
    override init() {
        super.init()

        self.itemInfo.icon = "ShareToWeChat"
        self.itemInfo.title = "微信"
        self.itemInfo.type = ShareTypeWeixiSession
    }
}

class WeChatTimelineActivity: CommonActivity {
    override init() {
        super.init()

        self.itemInfo.icon = "ShareToWeChatTimeLine"
        self.itemInfo.title = "朋友圈"
        self.itemInfo.type = ShareTypeWeixiTimeline
    }
}

class QQSpaceActivity: CommonActivity {
    override init() {
        super.init()

        self.itemInfo.icon = "ShareToQzone"
        self.itemInfo.title = "QQ空间"
        self.itemInfo.type = ShareTypeQQSpace
    }
}
}

Answer 1

很老的问题，但也许解决方案对其他人也有帮助!

在您的UIActivity 子类中实现/覆盖该方法

- (UIImage *)activityImage {
    return [UIImage imageNamed:@"Activity Icon"];
}

返回要在 UIActivityViewController 本身中显示的图像(正如您所做的那样)。

除了这个实现/覆盖方法

- (UIImage *)activitySettingsImage {
    return [UIImage imageNamed:@"Activity Settings Icon"];
}

返回要在更多/设置 View 中显示的(其他或相同的)图像。

我没有在文档中找到第二种方法，但它不是 UIAction 的“_xx”方法，所以我猜它不是私有(private)的...