相关疑难解决方法(0)

我正在使用iOS 6的新方式来分享信息: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:

- (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 …