代碼的最終2錯誤需要解決。 _CGRectIntersectsRect

Question

我有一個測試應用程序，從2年前，我現在試圖進入我的當前應用程序，我已經清除了大部分的問題，除了2我已經難倒了（3時）。也許我只是忽略了一些東西，但是我對XCode有些生疏，因爲我從測試應用程序開始就沒有使用它。使用Eclipse開發了過去幾年

Error 1: Undefined symbols for architecture i386:
"_CGRectIntersectsRect", referenced from: -[GameViewController gameStatePlayNormal] in GameViewController.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)

錯誤2：

Undefined symbols for architecture i386: "_CGRectIntersectsRect", referenced from: -[GameViewController gameStatePlayNormal] in GameViewController.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

#import <UIKit/UIKit.h> 

或者更直接：

#import <CoreGraphics/CoreGraphics.h>