应用程序获取iPod上的空白屏幕

当我在iPod 4G上运行我的应用程序时，它仅显示空白屏幕。这里是日志：应用程序获取iPod上的空白屏幕

run 
Running… 
[Switching to thread 11779] 
[Switching to thread 11779] 
Re-enabling shared library breakpoint 1 
continue 
objc[1014]: Class OutgoingMessage is implemented in both /System/Library/PrivateFrameworks/Message.framework/Message and /var/mobile/Applications/2930A145-7E61-4083-B893-FDBAE148FEF7/ABC.app/ABC. One of the two will be used. Which one is undefined. 
objc[1014]: Class Message is implemented in both /System/Library/PrivateFrameworks/MIME.framework/MIME and /var/mobile/Applications/2930A145-7E61-4083-B893-FDBAE148FEF7/ABC.app/ABC. One of the two will be used. Which one is undefined. 
Watchdog has expired. Remote device was disconnected? Debugging session terminated. 
Watchdog has expired. Remote device was disconnected? Debugging session terminated. 

The Debugger has exited due to signal 15 (SIGTERM).The Debugger has exited due to signal 15 (SIGTERM).

任何人都可以帮我解决这个问题吗？这是在iPhone 4，iPhone 3gs和iPad1上工作。

来源

2011-12-15 Vivek2012

我这一次发生在检查其功能（如canSendMail）当我在调试之间中途断开设备时。我得到这个错误信息，直到我重新启动设备。你已经尝试过了吗？ – 2011-12-15 06:42:23

是我尝试过。但仍然味精和黑屏出现..！沮丧在这个错误。 – Vivek2012 2011-12-15 06:52:22

尝试运行示例代码，看看这是否是您的代码或设备的问题。如果问题是你的代码，尝试逐步从didFinishLaunchingWithOptions

兼评出来的东西看出来的类（比如MFMailComposeViewController），你必须之前使用它们

来源

2011-12-15 07:05:01

应用程序获取iPod上的空白屏幕

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