字符串按特殊字符截取其中一部分

        NSString * str = @"

<?xml version="1.0" encoding="utf-8"?>

<string xmlns="http://www.babycloud.me/">{"countTime":"3月共出勤4天","signINTime":"21,23,25,28"}</string>

";

     

        

        NSRange range = [str rangeOfString:@"{"];

        NSString * str1 = [str substringFromIndex:range.location];

        

        NSLog(@"str1 == == = = = =%@",str1);

        

        NSRange range1 = [str1 rangeOfString:@"<"];

        NSDictionary * dic = [str1 substringToIndex:range1.location];

        NSLog(@"str2 = ==  ====%@",dic);