iOS 中的 Facebook 分享对话框

Question

我正在尝试在示例应用程序中实现来自 Facebook 的 native Share dialog。

这样做似乎有一些问题。

到目前为止我做过的事情：

1. 包含最新的 Facebook SDK
2. 包括 AdSupport、Social、Account、Security 和 libsqlite3.dylib。
3. 添加了来自 Facebook 的示例代码。
4. 还向其他链接器标志添加了 -lsqlite3.0 -ObjC
5. 将应用 ID 添加到 plist 中
6. 将 FBUserSettingsViewResources 包和 FacebookSDKResources.bundle 添加到项目中

但我似乎无法分享网址。共享对话框甚至没有出现。

我的代码如下所示：

Viewcontroller.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UIButton *buttonShare;
}
- (IBAction)shareButtonClicked:(id)sender;
@end

ViewController.m

#import "ViewController.h"
#import <FacebookSDK/FacebookSDK.h>

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}



- (IBAction)shareButtonClicked:(id)sender
{
    FBShareDialogParams *params = [[FBShareDialogParams alloc] init];
    params.link = [NSURL URLWithString:@"https://developers.facebook.com/ios"];
    params.picture = [NSURL URLWithString:@"https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png"];
    params.name = @"Facebook SDK for iOS";
    params.caption = @"Build great apps";
    [FBDialogs presentShareDialogWithParams:params clientState:nil handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
        if(error) {
            NSLog(@"Error: %@", error.description);
        } else {
            NSLog(@"Success!");
        }
    }];
}
@end

无法分享网址。在这方面需要一些指导。

Answer 1

- (IBAction)btn_facebook:(id)sender {
    [self performSelector:@selector(fb_func) withObject:nil afterDelay:0.0];
}

-(void)fb_func
{
    // if the session is closed, then we open it here, and establish a handler for state changes

    [FBSession openActiveSessionWithReadPermissions:nil allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState state, NSError *error)
     {
         if (error)
         {
             UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
             [alertView show];
         }
         else if(session.isOpen)
         {
             NSString *str_link = @"";
             NSLog(@"%@",str_link);

             NSDictionary *params = @{
                                      @"name" :@"name",
                                      @"caption" : @"Description",
                                      @"description" :@"test",
                                      @"picture" : PostimageToPintresrAndFacebook,
                                      @"link" : @"url",
                                      };

             // Invoke the dialog
             [FBWebDialogs presentFeedDialogModallyWithSession:nil
                                                    parameters:params
                                                       handler:
              ^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
                  if (error) {
                      NSLog(@"Error publishing story.");
                  } else {
                      if (result == FBWebDialogResultDialogNotCompleted) {
                          NSLog(@"User canceled story publishing.");
                      } else {
                          NSLog(@"Story published.");
                      }
                  }}];
         }
     }];
    return;

}

Answer 2

这对我有用：

NSString *url = @"myUrl";
FBLinkShareParams* params = [[FBLinkShareParams alloc]init];
params.link = [NSURL URLWithString:url];

if([FBDialogs canPresentShareDialogWithParams:params]){
        [FBDialogs presentShareDialogWithLink:  [NSURL URLWithString:url]
        name:   @"Name"
        caption:    @"Caption"
        description:    @"Description"
        picture:    nil
        clientState:    nil
        handler:    nil];
    }

    else{
          [...]
    }

Answer 3

- (IBAction)shareButtonClicked:(id)sender
{
    // if the session is closed, then we open it here, and establish a handler for state changes

    [FBSession openActiveSessionWithReadPermissions:nil allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState state, NSError *error)
     {
         if (error)
         {
             UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
             [alertView show];
         }
         else if(session.isOpen)
         {
             NSString *str_img = [NSString stringWithFormat:@"https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png"];

             NSDictionary *params = @{
                                      @"name" :[NSString stringWithFormat:@"Facebook SDK for iOS"],
                                      @"caption" : @"Build great Apps",
                                      @"description" :@"Welcome to iOS world",
                                      @"picture" : str_img,
                                      @"link" : @"",
                                      };

             // Invoke the dialog
             [FBWebDialogs presentFeedDialogModallyWithSession:nil
                                                    parameters:params
                                                       handler:
              ^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
                  if (error) {
                      //NSLog(@"Error publishing story.");
                      [self.indicator stopAnimating];
                  } else {
                      if (result == FBWebDialogResultDialogNotCompleted) {
                          //NSLog(@"User canceled story publishing.");
                          [self.indicator stopAnimating];
                      } else {
                          //NSLog(@"Story published.");
                          [self.indicator stopAnimating];
                      }
                  }}];
         }

     }];

    return;
}

Answer 4

您的设备上是否安装了 Facebook 应用程序？共享对话框仅在您安装了 Facebook 应用程序时才有效。

来自共享对话框文档：

提示 1：如果人们没有安装 Facebook 应用怎么办？

如果人们没有安装 Facebook 应用，则无法显示“分享”对话框。应用程序可以通过调用[FBDialogs canPresentShareDialogWithParams:nil]; 检测到这一点，并且可以禁用或隐藏共享按钮或退回到 Feed 对话框以在网络上共享。有关示例，请参阅 iOS SDK 中包含的 HelloFacebookSample。

据我所见，iOS 6 将返回NO 为+ canPresentShareDialogWithParams:。它只响应+ canPresentOSIntegratedShareDialogWithSession:。但我在这里可能是错的。

不管怎样，我就是这样做的- 1. 分享链接：

if ([FBDialogs canPresentShareDialogWithParams:nil]) {

    NSURL* url = [NSURL URLWithString:link.url];
    [FBDialogs presentShareDialogWithLink:url
                              handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
                 if(error) {
                       NSLog(@"Error: %@", error.description);
                 } else {
                       NSLog(@"Success");
                 }
     }];
}

2.对于 OpenGraph 调用：

id<FBGraphObject> pictureObject =
    [FBGraphObject openGraphObjectForPostWithType:@"your_namespace:picture"
                                            title:image.title
                                            image:image.thumbnailUrl
                                              url:image.url
                                      description:@""];

    id<FBOpenGraphAction> action = (id<FBOpenGraphAction>)[FBGraphObject graphObject];
    [action setObject:pictureObject forKey:@"picture"];

    [FBDialogs presentShareDialogWithOpenGraphAction:action
                                          actionType:@"your_namespace:action_name"
                                 previewPropertyName:@"picture"
                                             handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
                                                 if(error) {
                                                     NSLog(@"Error: %@", error.description);
                                                 } else {
                                                     NSLog(@"Success");
                                                 }
                                             }];

查看其他在 iOS 上分享的方式here

希望这会有所帮助。