目标-C和SWIFT URL编码

Question

目标-C和SWIFT URL编码我有一个NSString就像这样：http://www.但我想把它转换成：http%3A%2F%2Fwww.我该怎么做？

Answer 1

它叫URL编码..更多这里.

-(NSString *)urlEncodeUsingEncoding:(NSStringEncoding)encoding {
    return (NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,
           (CFStringRef)self,
           NULL,
           (CFStringRef)@"!*'\"();:@&=+$,/?%#[]% ",
           CFStringConvertNSStringEncodingToEncoding(encoding));}