1、NSString转std::string
NSString *str = @"it is nsstring";
std::string str = std::string([str UTF8String]);
2、std::string转NSString
如果是没有中文字符,就使用:
string path = string("原图17.png");
NSString* pathString = [NSString stringWithCString:str.c_str()
encoding:[NSString defaultCStringEncoding]];
有中文字符就使用:
string path = string("原图17.png");
NSString* pathString = [NSString stringWithCString:path.c_str()
encoding:NSUTF8StringEncoding];