设置与Facebook的连接未按预期工作(iPhone)
我正在尝试创建一个到Facebook的连接,但是我在处理openUrl时遇到了一个问题 过去,我可以在我的应用程序委派类中添加以下内容:设置与Facebook的连接未按预期工作(iPhone),iphone,ios,facebook,delegates,Iphone,Ios,Facebook,Delegates,我正在尝试创建一个到Facebook的连接,但是我在处理openUrl时遇到了一个问题 过去,我可以在我的应用程序委派类中添加以下内容: - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation { return [[viewController f
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
return [[viewController facebook] handleOpenURL:url];
}
正如我所期望的那样。然而,这次我有一个稍微不同的情况,即viewController在应用程序的其他地方加载。为了解决这个问题,我想出了一个主意,创建一个新类,负责处理连接,但也可以从我创建Facebook帖子的类访问
下面是我的应用程序委托类中的相关代码,以作进一步解释
.m
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
FacebookConnectionHandler *fbConnHandler = [[FacebookConnectionHandler alloc] init];
return [[fbConnHandler facebook] handleOpenURL:url];
}
#import "FacebookConnectionHandler.h"
@implementation FacebookConnectionHandler
@synthesize otherView;
@synthesize facebook;
static FacebookConnectionHandler *mySingleton = nil;
+ (id)sharedManager
{
@synchronized(self)
{
if (mySingleton == nil) mySingleton = [[self alloc] init];
}
return mySingleton;
}
- (void)fbDidLogin
{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:[facebook accessToken] forKey:@"FBAccessTokenKey"];
[defaults setObject:[facebook expirationDate] forKey:@"FBExpirationDateKey"];
[defaults synchronize];
// Allow the user to create a post
[self.otherView createFacebookPost];
}
@end
- (void)createFacebookPost
{
// Create the post
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
@"Blah", @"name",
@"", @"caption",
@"", @"description",
@"http://www.xyz.com", @"link",
@"", @"picture",
nil];
// Post it to the users feed
[facebook dialog:@"feed" andParams:params andDelegate:nil];
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
switch (buttonIndex)
{
case kFacebookButton:
{
if (facebook == nil || ![facebook isSessionValid])
{
// Setup Facebook connection
facebook = [[Facebook alloc] initWithAppId:@"1111111111" andDelegate:self];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults objectForKey:@"FBAccessTokenKey"]
&& [defaults objectForKey:@"FBExpirationDateKey"])
{
facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
}
// Set the connection handler
FacebookConnectionHandler *fbConnectionHandler = [[FacebookConnectionHandler alloc] init];
fbConnectionHandler.mapView = self;
fbConnectionHandler.facebook = self.facebook;
if (![facebook isSessionValid])
{
NSArray *permissions = [[NSArray alloc] initWithObjects:@"publish_actions", nil];
[facebook authorize:permissions];
}
}
else
{
// Create the post
[self createFacebookPost];
}
break;
}
default:
break;
}
}
下面是FacebookConnectionHandler
类中的代码:
.h
#import <Foundation/Foundation.h>
#import "Other_ViewController.h"
#import "Facebook.h"
@interface FacebookConnectionHandler : NSObject <FBSessionDelegate>
{
Other_ViewController *otherView;
Facebook *facebook;
}
@property(nonatomic, strong)Other_ViewController *otherView;
@property(nonatomic, strong)Facebook *facebook;
+ (id)sharedManager;
@end
#import "FBConnect.h"
@interface Other_ViewController : UIViewController <FBSessionDelegate>
{
Facebook *facebook;
}
@property(nonatomic, retain)Facebook *facebook;
- (void)createFacebookPost;
@end
最后。。。以下是Other_ViewController
类(创建帖子的地方)中的相关代码:
.h
#import <Foundation/Foundation.h>
#import "Other_ViewController.h"
#import "Facebook.h"
@interface FacebookConnectionHandler : NSObject <FBSessionDelegate>
{
Other_ViewController *otherView;
Facebook *facebook;
}
@property(nonatomic, strong)Other_ViewController *otherView;
@property(nonatomic, strong)Facebook *facebook;
+ (id)sharedManager;
@end
#import "FBConnect.h"
@interface Other_ViewController : UIViewController <FBSessionDelegate>
{
Facebook *facebook;
}
@property(nonatomic, retain)Facebook *facebook;
- (void)createFacebookPost;
@end
我可能用了完全错误的方法来处理这个问题,并且已经完全把问题复杂化了,但是我对整个facebook SDK都是新手,现在我真的很困惑。请问有人能提供一个解决方案吗
注意:需要明确的是,问题是没有调用方法
fbdilogin
,因此其余代码没有机会运行。如果在应用程序委托中没有使用单例,那么您正在创建连接处理程序类的新实例:
而不是
FacebookConnectionHandler *fbConnHandler = [[FacebookConnectionHandler alloc] init];
return [[fbConnHandler facebook] handleOpenURL:url];
试一试
您也没有在Other\u ViewController
类中使用单例
如果要使用单例体系结构模式,您必须记住始终使用sharedManager
,并且永远不要分配/初始化新模式:)
我有时会使init
抛出一个异常,以提醒我存在一个单例方法
static FacebookConnectionHandler *mySingleton = nil;
- (id)init {
@throw [NSException exceptionWithName:self.class.description reason:@"Please use the sharedManager, don't make a new one of these!" userInfo:nil];
}
- (id)initInternal {
// Put your real init stuff in here
}
+ (id)sharedManager
{
@synchronized(self)
{
if (mySingleton == nil) mySingleton = [[self alloc] initInternal];
}
return mySingleton;
}
PS使用单独的脸谱网类正是我在以前编写的应用程序中所做的事情-你的架构很好:)我也会考虑让脸谱网连接HANDER类负责它自己的脸谱网实例而不是视图控制器必须这样做: