遇到这么一个蛋疼的问题：dyld: lazy symbol binding failed: Symbol not found: _objc_setProperty_nonatomic
Referenced from: /Users/imove-1/Library/Application Support/iPhone Simulator/5.1/Applications/24E4730A-9DB0-44F7-97E0-2D08F4AEC9DD/iMove.app/iMove

Expected in: /Applications/Xcode.app/Contents/Developer/
Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/
Frameworks/Foundation.framework/Foundation

经过一番研究，发现出错原因：项目中，我是用cocoapods管理第三方包的。其中第三方包SwipeView的iOS Deployment Target 默认为iOS 6.1，改成4.3就可以了。