如何使用iOS6中的SLRequests将当前应用程序屏幕发布到Facebook和Twitter工作表

Question

我已经为Facebook和Twitter按钮整合了以下代码。

我目前在社交媒体表中有测试图片发布 - 但是我想发布当前的应用程序屏幕而不是预先确定的图像，因为屏幕一直在变化。

我该怎么办？

- (IBAction)postToTwitter:(id)sender {
    if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter])
    {
        SLComposeViewController *tweetSheet = [SLComposeViewController
                                               composeViewControllerForServiceType:SLServiceTypeTwitter];
        [tweetSheet setInitialText:@"Test Run!"];
        if (![tweetSheet addImage:[UIImage imageNamed:@"test1.jpg"]]) {
            NSLog(@"Unable to add the image!");
        }

        if (![tweetSheet addURL:[NSURL URLWithString:@"http://twitter.com/"]]){
            NSLog(@"Unable to add the URL!");
        }

        [self presentViewController:tweetSheet animated:YES completion:nil];
    }
}

- (IBAction)postToFacebook:(id)sender {
    if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
        SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];

        [controller setInitialText:@"Test Run"];
        [controller addURL:[NSURL URLWithString:@""]];
        [controller addImage:[UIImage imageNamed:@"test2.jpg"]];

        [self presentViewController:controller animated:YES completion:Nil];
    }