ios - 如何从 UIActivityViewController 仅获取操作按钮共享 facebook

Question

我有一个案例如下:

在应用程序中，我创建了一个 UIButton，当单击时会显示一个弹出共享 facebook，如 UIActivityViewController。但我不知道从 UIActivityViewController 获取弹出共享 facebook。我需要每个人的帮助。

太感谢了 !!!

Answer 1

您需要创建一个 UIActivityViewController 并指定要共享的项目:

- (IBAction)buttonPressed:(id)sender
{
    NSString *textToShare = @"Put text here";
    UIImage *imageToShare = _img;
    NSArray *itemsToShare = @[textToShare, imageToShare];

    UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:itemsToShare applicationActivities:nil];
    [self presentViewController:activityViewController animated:TRUE completion:nil];
}

如果您希望排除任何 activity types您可以通过添加:

// add an array of activity types to exclude
activityViewController.excludedActivityTypes = @[UIActivityTypeMail, UIActivityTypeAssignToContact, UIActivityTypePrint, UIActivityTypePostToTwitter, UIActivityTypePostToWeibo];

在展示 activityViewController 之前。

此外，要查看“在 Facebook 上分享”选项，您需要在设备上登录 Facebook，如 this answer 中所述。 .

///

选项 2 - 没有 UIActivityController

如果您不想使用 Activity Controller，而是直接打开 iOS 社交分享对话框，您可以通过导入 Social 来实现。框架，然后使用 Social Compose View Controller (SLComposeViewController)

// import Social framework
#import <Social/Social.h>    

// check if there is an account for Facebook
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook])    
{

    SLComposeViewController *fbController=[SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];

    // set up a completion handler (optional)   
    SLComposeViewControllerCompletionHandler __block completionHandler=^(SLComposeViewControllerResult result){

        [fbController dismissViewControllerAnimated:YES completion:nil];

        switch(result){
            case SLComposeViewControllerResultCancelled:
            default:
                break;
            case SLComposeViewControllerResultDone:
                break;
    }};

    [fbController addImage:imageToPost];
    [fbController setInitialText:textToPost];
    [fbController addURL:urlToPost];
    [fbController setCompletionHandler:completionHandler];
    [self presentViewController:fbController animated:YES completion:nil];
}