在真機調試時遇到 atal error: file '/Applications/Xcode6.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIWebView.h' has been modified since the precompiled header '/Users/wdl/Library/Developer/Xcode/DerivedData/ModuleCache/97F16MVNSP3M/UIKit-35TDUEIBFI6H.pcm' was built
note: please rebuild precompiled header '/Users/wdl/Library/Developer/Xcode/DerivedData/ModuleCache/97F16MVNSP3M/UIKit-35TDUEIBFI6H.pcm'
1 error generated.
是由於Xcode引起的，將/Users/wdl/Library/Developer/Xcode/DerivedData/ModuleCache/97F16MVNSP3M/UIKit-35TDUEIBFI6H.pcm 即xcode 菜單Window-Organizer -DerivedData刪掉即可。