适用于iOS的Facebook SDK，适用于iOS 4.0设备 [英] Facebook SDK for iOS , on iOS 4.0 device

问题描述

Facebook SDK文档表明此SDK可在iOS 4.0及更高版本上运行。然后我在iPhone 3GS iOS 4.0设备上测试了他们的Scrumptions示例。但似乎这个应用程序不起作用。尽管我已经登录，它仍然向我显示登录屏幕。

Facebook SDK documents indicates that this SDK will work on iOS 4.0 and later. Then I tested their Scrumptions sample on a iPhone 3GS iOS 4.0 device. But it seems this application doesn't work. It keeps showing me the login screen although I logged in.

然后我调试并注意到 FBSessionState 总是返回 FBSessionStateClosedLoginFailed 。
它永远不会返回 FBSessionStateOpen 。

Then I debugged and noticed FBSessionState always returnsFBSessionStateClosedLoginFailed. It never returns FBSessionStateOpen.

可能是什么原因？但是，当我在iOS 5.1模拟器中运行它时它工作正常。是因为SDK不支持iOS 4.0或其他一些问题吗？

What could be the reason? However when I run this in iOS 5.1 emulator it works fine. Is it because SDK doesn't support iOS 4.0 or some other issue?

推荐答案

您是否声明了

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation;

和

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url;

？

第一个是iOS 4.2及更高版本因此，如果您的设备使用4.2之前的版本运行，则将使用第二种方法。

The first one is iOS 4.2 and later so if your device is running with a version prior 4.2,the second method will be used instead.

这篇关于适用于iOS的Facebook SDK，适用于iOS 4.0设备的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！