Question

当我尝试整合来自SpeakHere的记录/播放代码时，我的编译器报告了很多错误。我已经遵循建议使用.mm文件来包含cpp包含文件，唯一的例外是我使用启用了ARC的iOS 5。

我的代码是：

//header file
#import "AQPlayer.h"
#import "AQRecorder.h"

@interface MyClass : NSObject {

UIButton *record;
UIButton *cancel;
UIButton *stop;
UIButton *play;

//
AQPlayer*                   player;
AQRecorder*                 recorder;
BOOL                        playbackWasInterrupted;
BOOL                        playbackWasPaused;

CFStringRef                 recordFilePath; 
}

@property (nonatomic, retain) IBOutlet DrawerAudioNote *dnote;
@property (nonatomic, retain) IBOutlet UIButton *record;
@property (nonatomic, retain) IBOutlet UIButton *cancel;
@property (nonatomic, retain) IBOutlet UIButton *stop;
@property (nonatomic, retain) IBOutlet UIButton *play;

- (IBAction) doRecord:(id)sender;
- (IBAction) doStop:(id)sender;
- (IBAction) doCancel:(id)sender;
- (IBAction) doPlay:(id)sender;

//
@property (readonly)            AQPlayer            *player;
@property (readonly)            AQRecorder          *recorder;

//.mm file (no compile error)
@import "MyClass.h"
@implementation MyClass

@synthesize record, cancel, stop, play;
@synthesize playbackWasInterrupted;
@synthesize player, recorder;

//CAXException.h (an example cpp file with compile errors)
......
class CAX4CCString { 
//ERROR: Expect ';' after top level declarator
//ERROR: Unknown type name; do you mean 'Class'?
public:
    CAX4CCString(OSStatus error) {
        // see if it appears to be a 4-char-code
        char *str = mStr;
        *(UInt32 *)(str + 1) = CFSwapInt32HostToBig(error);
        if (isprint(str[1]) && isprint(str[2]) && isprint(str[3]) && isprint(str[4])) {         
            str[0] = str[5] = '\'';
            str[6] = '\0';
        } else if (error > -200000 && error < 200000)
            // no, format it as an integer
            sprintf(str, "%d", (int)error);
        else
            sprintf(str, "0x%x", (int)error);
    }
    const char *get() const { return mStr; }
    operator const char *() const { return mStr; }
private:
    char mStr[16];
};

通过类'CAX4CCString'中的编译错误，编译器似乎不理解他正在处理CPP文件。我知道我会错过任何地方的东西，任何人都可以指出？

提前致谢，

肖恩

Answer 1

为什么不为特定文件禁用ARC？您的项目仍然使用ARC，但有问题的文件除外。将-fno-objc-arc添加到您不希望使用ARC的文件的编译器标志中。在Xcode中，您可以在目标下执行此操作 - ＆gt;构建阶段 - ＆gt;编译来源。

Answer 2

您正在声明C ++类

class CAX4CCString {

在Objective-C类MyClass内部。我担心Objective-C不支持这一点。

我认为您可以在全局范围内声明CAX4CCString，然后从Objective-C类中实例化并使用它：

//.mm file

class CAX4CCString { 
   ....
};


@implementation MyClass

@synthesize record, cancel, stop, play;
@synthesize playbackWasInterrupted;
@synthesize player, recorder;
...
   <do something with CAX4CCString>
@end

是否有人成功将SpeakHere移植到ARC？

2 个答案: