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我是 MonoTouch iPhone 应用程序的新手，当我尝试从 Xamarin 示例运行 Social Framework Demo 时，单击任何按钮会使应用程序崩溃并出现未处理的异常，请帮助我

MonoDevelop 3.0.4.7

安装UUID：d9012fd4-f121-4a57-839d-50ccdf232e64

运行：

Mono 2.10.9 (tarball)
GTK 2.24.10
GTK# (2.12.0.0)
Package version: 210090011

苹果开发者工具：

 Xcode 4.2.1 (834)
 Build 4D502

适用于 Android 的单声道：4.2.7

Android SDK：/Users/ravichandra/Library/Developer/Xamarin/android-sdk-mac_x86

Supported Android versions:
    2.1   (API level 7)
    2.2   (API level 8)
    2.3   (API level 10)
    3.1   (API level 12)
    4.0   (API level 14)
    4.0.3 (API level 15)

Java SDK：/usr Monotouch：6.0.0

构建信息：

Release ID: 30004007
Git revision: ea0108260c6a376ecaeffcdb7d03387bd51edda3
Build date: 2012-09-17 14:09:17+0000
Xamarin addins: ec43fd5cb223ead4234a9858d1b56eef03dad53a-dirty

操作系统：

Mac OS X 10.7.5
Darwin Ravi-Chandras-iMac.local 11.4.2 Darwin Kernel Version 11.4.2
    Thu Aug 23 16:25:48 PDT 2012
    root:xnu-1699.32.7~1/RELEASE_X86_64 x86_64

[错误] 致命的未处理异常：System.ArgumentNullException：参数不能为空。参数名称：服务类型

at MonoTouch.Social.SLComposeViewController.IsAvailable (MonoTouch.Foundation.NSString serviceType) [0x0000c] in /Developer/MonoTouch/Source/monotouch/src/Social/SLComposeViewController.g.cs:93

at MonoTouch.Social.SLComposeViewController.IsAvailable (SLServiceKind serviceKind) [0x00000] in /Developer/MonoTouch/Source/monotouch/src/Social/SLComposeViewController.cs:25

at SocialFrameworkDemo.SocialFrameworkDemoViewController.m__1 (System.Object , System.EventArgs ) [0x00000] in /Users/ravichandra/Downloads/SocialFrameworkDemo 2/SocialFrameworkDemo/SocialFrameworkDemoViewController.cs:52

at MonoTouch.UIKit.UIControlEventProxy.Activated () [0x00000] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIControl.cs:30

at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr) at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0004c] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38

at SocialFrameworkDemo.Application.Main (System.String[] args) [0x00000] in /Users/ravichandra/Downloads/SocialFrameworkDemo 2/SocialFrameworkDemo/Main.cs:17

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1 回答 1

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Xcode 4.2.1 (834)

The new Social framework is available on iOS 6.0 (and later). This SDK is only available if you install Xcode 4.5 (or later).

Without it you're missing the required libraries to support the new features. In this case you're getting some missing strings as null values - and that throws an exception in the sample.

于 2012-11-21T13:33:12.670 回答