1. Choose a destination with a supported architecture in order to run on this device.  
   
    
   
   
   解決：
   
   Target -> Build Settings -> Build Options set the "Compiler for C/C++/Objective-C" -   選擇"Default compiler (Apple LLVM 5.0)"
   
    
   
   
   
   
   2.clang: error: invalid deployment target for -stdlib 
   解決：
   
    
   
   
   
   3.ios使用AdMob出錯-[GADObjectPrivate changeState:]: unrecognized selector sent
   解決：在Build Settings 中的Other Linker Flags中加入-ObjC
   
   
   4.'Undefined symbols for architecture i386:
   _OBJC_CLASS_$_Reachability", referenced  from objc-class-ref inViewController.o
   ld: symbol(s) not found for architecture i386
   clang: error: linker command failed with exit code 1 (use -v to see invocation)'
   
   解決：問題原因：我xcode版本為4.5.1,在引入Reachability時候，4.5.1預設沒有勾選targert，所以導致上述錯誤。
   
   
   5.ios6.0 storyboard編繹出錯：'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate
   
   解決：storyboard or XIB tonot use Autolayout
   
   
   6.使用SDWebImage 第三方庫出錯
   Undefined symbols for architecture i386: "_OBJC_CLASS_$_MKAnnotationView", referenced from: l_OBJC_$_CATEGORY_MKAnnotationView_$_WebCache in MKAnnotationView+WebCache.o "_CGImageSourceCreateIncremental", referenced from: -[SDWebImageDownloader connection:didReceiveData:] in SDWebImageDownloader.o "_CGImageSourceUpdateData", referenced from: -[SDWebImageDownloader connection:didReceiveData:] in SDWebImageDownloader.o "_CGImageSourceCopyPropertiesAtIndex", referenced from: -[SDWebImageDownloader connection:didReceiveData:] in SDWebImageDownloader.o "_CGImageSourceCreateImageAtIndex", referenced from: -[SDWebImageDownloader connection:didReceiveData:] in SDWebImageDownloader.o "_kCGImagePropertyPixelHeight", referenced from: -[SDWebImageDownloader connection:didReceiveData:] in SDWebImageDownloader.o "_kCGImagePropertyPixelWidth", referenced from: -[SDWebImageDownloader connection:didReceiveData:] in SDWebImageDownloader.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)
   
   解決：加入 MapKit  和  ImageIO 
   
   
   
   7.錯誤提示：* Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '* -[NSCFArray insertObject:atIndex:]: mutating method sent to immutable object'
   問題出現在語句：
   [saveArray addObject:[NSNumber numberWithInt:saveNum]];
   可變的方法傳送給一個不可變的物件
   
   ps:@property(nonatomic,retain) NSMutableArray * saveArray;
   前面已經賦值：
   
   NSMutableArray *array = [[NSMutableArray alloc] init];
   self.saveArray = array;
   [array release];
   
   
   
   解決方法：
   NSMutableArray *mutaArray = [[NSMutableArray alloc] init];
   [mutaArray addObjectsFromArray:saveArray];
   
   [mutaArray addObject:[NSNumber numberWithInt:saveNum]];
   
   self.saveArray = mutaArray
   [mutaArray release];
   
   
   
   

build 出現Dependency Analysis Error，Product.app出錯，解決方法   

build 出現Dependency Analysis Error，Product.app出錯，解決方法


Unable to run command ‘Cpresource  Product.app' - this target might include its own product.




  




解決方法：
TARGETS - Build Phases－Copy Bundle Resources－把Product.app刪掉