从C++文件调用Objective-C的方法

Z时代
2024-01-10
分类：问答

我从UnityBridge.mm文件调用BLEObject.m中的方法。从C++文件调用Objective-C的方法

BLEObject.m具有

- (void) SendSetting:(NSData*)data forSelected:(NSString*)type with:(NSData*)clublength and:(NSData*)clubloft{ 
}

UnityBridge.mm具有

void bleplugin_sendSetting(unsigned char data, char* type, float clublength, float clubloft) 
{ 
    BLEObject *bleobj = [[BLEObject alloc] init]; 
    //NSString* objcstring = @(type); 
    NSString* string = [NSString stringWithUTF8String:type]; 
    NSData *data_ = [NSData dataWithBytes: &data length: sizeof(data)]; 
    NSData *clublength_ = [NSData dataWithBytes: &clublength length: sizeof(clublength)]; 
    NSData *clubloft_ = [NSData dataWithBytes: &clubloft length: sizeof(clubloft)]; 
    [bleobj SendSetting:data_ forSelected:string with:clublength_ and:clubloft_]; 
    return; 
}

我有一个错误;

[bleobj SendSetting:data_ forSelected:string with:clublength_ and:clubloft_];用如下面的图像中示出的期望的表达：

回答：

and在C关键字++;它在语法上与您写下&&相同。（类似地，对于or||，not为!，not_eq为!=，bitand为&，bitor为|，xor为^，compl为~，and_eq为&=，or_eq|=为，并xor_eq为^=）。