《c++和oc 转换 NSString》

1.  string 转换为 NSString  

  std::string str("hello");

  NSString *str=[NSString stringWithString:str.c_str()];

  NSString *istr=[NSString stringWithString:@"zsh"];

    str=[istr cStringUsingEncoding: NSUTF8StringEncoding];

    NSString *path= [[NSBundle mainBundle]pathForResource:@"nokia" ofType:@"mp3"];

    char *tempPath=(char*)malloc(sizeof(path)+1);

    NSString *soundPath=[[NSBundle mainBundle] pathForResource:@mp3"];

    NSString* dirStr = [NSString stringWithFormat:@"%s",path];

    NSString* filepath = [[NSBundle mainBundle] pathForResource:dirStr ofType:nil];

    NSLog(filepath);

 2.  //NSString 转换为C 字符串

    const char* destDir = [filepath UTF8String];

  //  NSURL *soundUrl=[[NSURL alloc] initFileURLWithPath:s];

3.const char * to NSString

char *str ="abc";

NSString *s = [NSString stringWithUTF8String:str];