ios 字符串截取

按给定字符串截取原有字符串，并输出截取结果

例：截取字符串“20 ｜http://www.621life.com”中字符‘|'前后的字符串，并输出

NSString *str = @"20 ｜http://www.621life.com";

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

int location = range.location;

NSString *str1 = [str subStringToIndex:location];

NSString *str2 = [str substringFromIndex:location+1];