NSURL为参数字符串中的键提取单个值

Question

我有一个NSURL：serverCall？x = a＆y = b＆z = c获取y值的最快，最有效的方法是什么？谢谢

Answer 1

我很确定您必须自己解析它。但是，还算不错：

NSString * q = [myURL query];

NSArray * pairs = [q componentsSeparatedByString:@"&"];

NSMutableDictionary * kvPairs = [NSMutableDictionary dictionary];

for (NSString * pair in pairs) {

  NSArray * bits = [pair componentsSeparatedByString:@"="];

  NSString * key = [[bits objectAtIndex:0] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

  NSString * value = [[bits objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

  [kvPairs setObject:value forKey:key];

}

NSLog(@"y = %@", [kvPairs objectForKey:@"y"]);