UIActivityItemSource Protocole设置复杂对象 [英] UIActivityItemSource Protocole set complex object

问题描述

我正在使用iOS 6的新方式来共享信息： UIActivityViewController 。要根据媒体（Facebook，Twitter或邮件）选择共享数据，我的视图控制器实现 UIActivityItemSource 协议，如下所示：

I'm using iOS 6 new way to share information : UIActivityViewController. To select the shared data depending on the media (facebook, twitter or mail) my view controller implement the UIActivityItemSource Protocol as follow :

- (IBAction)onShareButton:(UIButton *)sender
{

    UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[self] applicationActivities:nil];

    activityViewController.excludedActivityTypes = @[UIActivityTypeMessage, UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypeMessage, UIActivityTypePostToWeibo, UIActivityTypePrint, UIActivityTypeSaveToCameraRoll];
    [self presentViewController:activityViewController animated:YES completion:^{}];
}

#pragma mark - UIActivityItemSource Protocol

- (id)activityViewController:(UIActivityViewController *)activityViewController itemForActivityType:(NSString *)activityType {
    if ([activityType isEqualToString:UIActivityTypePostToFacebook]) {
        NSArray *items = @[@"message facebook", [NSURL URLWithString:@"http://www.myUrlFacebook.com"]];
        return items;
    } else if ([activityType isEqualToString:UIActivityTypePostToTwitter]) {
        NSArray *items = @[@"message twitter", [NSURL     URLWithString:@"http://www.myUrlTwitter.com"]];
        return items;
    } else if ([activityType isEqualToString:UIActivityTypeMail]) {
        NSArray *items = @[@"message mail", [NSURL URLWithString:@"http://www.myUrlMail.com"]];
        return items;
    }

        NSArray *items = @[@"Not a proper Activity", [NSURL URLWithString:@"http://www.myUrlMail.com"]];
    return items;
}

- (id)activityViewControllerPlaceholderItem:(UIActivityViewController *)activityViewController {
    return @"PlaceHolder";
}

当我为返回一个简单的NSString时，activityViewController ：itemForActivityType：我的 UIActivityViewController 很好地使用了该字符串，但我找不到使用数组的方法！

When I'm returning a simple NSString for activityViewController:itemForActivityType: the string is well used by my UIActivityViewController, but I can't find a way to use an Array !

根据Apple文档，它应该是可能的：

According to Apple Documentation it should be possible :

此方法返回活动对象要执行的实际数据对象
Apple文档

有没有人使用过这个 UIActivityItemSource 带数组的协议，还是有一个使用完整的教程来做到这一点？

Does anyone ever use this UIActivityItemSource Protocol with Arrays, or is there a use full tutorial to do that ?

注意：我也遇到了这个错误控制台，它可能有帮助...

Note : I also got this error on the console, it may help ...

启动服务：注册未知的应用程序标识符com.apple.mobilemail失败ed

Launch Services: Registering unknown app identifier com.apple.mobilemail failed

启动服务：无法找到应用程序标识符com.apple.mobilemail

Launch Services: Unable to find app identifier com.apple.mobilemail

推荐答案

在花了大量时间试图弄清楚这个之后，似乎无法将它传递给 NSArray 项目。所以我扩展了 UIActivityViewController 以使其成为可能。

After spending a significant amount of time trying to figure this one out, it seems it isn't possible to pass it an NSArray of items. So I extended UIActivityViewController to make it possible.

RDActivityViewController

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