ios SLComposeViewController 分享教程

Tutorial for SLComposeViewController sharing

提问by Mick MacCallum

What are the steps I need to follow to use iOS 6's new SLComposeViewControllerto post to Facebook, Twitter or Sina Weibo?

使用 iOS 6 的新SLComposeViewController功能发布到 Facebook、Twitter 或新浪微博需要遵循哪些步骤？

回答by Mick MacCallum

For details on this framework please see Apple's Social Framework Class Reference

有关此框架的详细信息，请参阅 Apple 的社交框架类参考

Additional tutorials:

附加教程：

1. http://soulwithmobiletechnology.blogspot.com/2012/07/tutorial-how-to-use-inbuilt.html
2. http://www.mobile.safilsunny.com/iphone/integrating-facebook-ios/
3. https://rudeboy-quickies.blogspot.com/2012/06/steps-to-integrate-facebook-in-ios6.html

1. http://soulwithmobiletechnology.blogspot.com/2012/07/tutorial-how-to-use-inbuilt.html
2. http://www.mobile.safilsunny.com/iphone/integrating-facebook-ios/
3. https://rudeboy-quickies.blogspot.com/2012/06/steps-to-integrate-facebook-in-ios6.html

For this example, we will be using the SLComposeViewController's SLServiceTypeFacebook. If you wish to use Twitter or SinaWeibo just change out the SLServiceType to one of the following:

在这个例子中，我们将使用SLComposeViewController's SLServiceTypeFacebook。如果您想使用 Twitter 或新浪微博，只需将 SLServiceType 更改为以下之一：

• SLServiceTypeFacebook
• SLServiceTypeSinaWeibo
• SLServiceTypeTwitter

• SL服务类型Facebook
• SL服务类型新浪微博
• SLServiceTypeTwitter

iOS 6 has made it very easy to post directly to Facebook, Twitter or Sina Weibo using the SLComposeViewController. This works very similarly to iOS 5's TWTweetComposeViewController.

iOS 6 使得使用SLComposeViewController. 这与 iOS 5 的TWTweetComposeViewController.

First, in your view controller's header file (.h) #importthe Social Framework and the Accounts Framework.

首先，在您的视图控制器的头文件 (.h) 中#import，社交框架和帐户框架。

#import <Social/Social.h>

#import <Social/Social.h>

#import <Accounts/Accounts.h>

#import <Accounts/Accounts.h>

Here we will declare a simple UIButtonand an IBActionthat we will later link to that button and a void(sharingStatus) which will be used to check that the selected sharing service is available.

在这里，我们将声明一个 simpleUIButton和 an IBAction，稍后将链接到该按钮和一个void(sharingStatus)，用于检查所选共享服务是否可用。

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UIButton *easyFacebookButton;
- (IBAction)facebookPost:(id)sender;
- (void)sharingStatus;
@end

@implementation ViewController

Then, in your implementation file (.m), we'll start by implementing the (sharingStatus) void that we declared in the header file. sharingStatus uses SLComposeViewController's isAvailableForServiceTypeBOOL to return whether or not you can post to the service specified in its argument. In this case, we will use the service type SLServiceTypeFacebook. If the service is available the post button will be enabled with an alpha value of 1.0f, and if the service isn't available the button will be disabled its alpha value set to 0.5f.

然后，在您的实现文件 (.m) 中，我们将首先实现我们在头文件中声明的 (sharingStatus) void。sharedStatus 使用SLComposeViewController's isAvailableForServiceTypeBOOL 返回您是否可以发布到其参数中指定的服务。在这种情况下，我们将使用服务类型SLServiceTypeFacebook。如果服务可用，发布按钮将被启用，alpha 值为 1.0f，如果服务不可用，按钮将被禁用，其 alpha 值设置为 0.5f。

- (void)sharingStatus {
    if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
        NSLog(@"service available");
        self.easyFacebookButton.enabled = YES;
        self.easyFacebookButton.alpha = 1.0f;
    } else {
        self.easyFacebookButton.enabled = NO;
        self.easyFacebookButton.alpha = 0.5f;
    }
}

Here we will set up the IBActionthat will call up the composer. For good practice, we will check isAvailableForServiceTypeagain to avoid calling up the composer for a service type that isn't available. (Incase something went wrong during the last check, or if availability somehow changed in the fraction of a second in between tapping the post button and the composers all/init. The code below has been set up to display a Facebook composers sheet with text, an image, and a link. This action also utilises a completion handler for the composer's cancelled and done results.

在这里，我们将设置IBAction调用作曲家的 。作为良好的实践，我们将isAvailableForServiceType再次检查以避免为不可用的服务类型调用 Composer。（以防在上次检查期间出现问题，或者如果在点击发布按钮和作曲家全部/初始化之间的几分之一秒内可用性以某种方式发生变化。下面的代码已设置为显示带有文本的 Facebook 作曲家表，一个图像和一个链接。这个动作还利用一个完成处理程序来处理作曲家的取消和完成结果。

- (IBAction)facebookPost:(id)sender {

    if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {

        SLComposeViewController *mySLComposerSheet = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];

        [mySLComposerSheet setInitialText:@"iOS 6 Social Framework test!"];

        [mySLComposerSheet addImage:[UIImage imageNamed:@"myImage.png"]];

        [mySLComposerSheet addURL:[NSURL URLWithString:@"http://stackoverflow.com/questions/12503287/tutorial-for-slcomposeviewcontroller-sharing"]];

        [mySLComposerSheet setCompletionHandler:^(SLComposeViewControllerResult result) {

             switch (result) {
                 case SLComposeViewControllerResultCancelled:
                     NSLog(@"Post Canceled");
                     break;
                 case SLComposeViewControllerResultDone:
                     NSLog(@"Post Sucessful");
                     break;

                 default:
                     break;
             }
         }];

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

In viewWillAppearwe will register an observer to ACAccountStoreDidChangeNotificationso the application can be notified when account information changes. This observer will then be removed in viewDidDisappear.

在viewWillAppear我们的观察员注册到ACAccountStoreDidChangeNotification这样的应用程序可以在账户信息发生变化的通知。然后将在 中删除此观察者viewDidDisappear。

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sharingStatus) name:ACAccountStoreDidChangeNotification object:nil];
}

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
    [[NSNotificationCenter defaultCenter] removeObserver:ACAccountStoreDidChangeNotification];
}

And finally, open up interface builder and add a UIButtonwhich will be the post button. Then in the connections inspector link the IBOutletand IBActionwe created earlier to the button, and that's it! You're done!

最后，打开界面构建器并添加一个UIButton将作为发布按钮的按钮。然后在连接检查器中将我们之前创建的IBOutlet和链接IBAction到按钮，就是这样！你完成了！

回答by Desert Rose

Just use this code to share on Facebook.

只需使用此代码在 Facebook 上分享即可。

SLComposeViewController *controllerSLC = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
[controllerSLC setInitialText:@"First post from my iPhone app"];
[controllerSLC addURL:[NSURL URLWithString:@"http://www.appcoda.com"]];
[controllerSLC addImage:[UIImage imageNamed:@"test.jpg"]];
[self presentViewController:controllerSLC animated:YES completion:Nil];

If you want this for Twitter then just change SLServiceTypeTwitter.

如果你想要这个 Twitter，那么只需更改 SLServiceTypeTwitter。

回答by A R

Safe Use of SLComposeViewController

SLComposeViewController 的安全使用

if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook])
    {
        SLComposeViewController *fbPost = [SLComposeViewController
                                               composeViewControllerForServiceType: SLServiceTypeFacebook];
        [fbPost setInitialText:@"Text You want to Share"];
        [fbPost addImage:[UIImage imageNamed:@"shareImage.png"]];
        [self presentViewController:fbPost animated:YES completion:nil];
        [fbPost setCompletionHandler:^(SLComposeViewControllerResult result) {
            switch (result) {
                case SLComposeViewControllerResultCancelled:
                    NSLog(@"Post Canceled");
                    break;
                case SLComposeViewControllerResultDone:
                    NSLog(@"Post Sucessful");
                    break;
                default:
                    break;
            }
            [self dismissViewControllerAnimated:YES completion:nil];
        }];
    }