//判断是否有中文-(BOOL)IsChinese:(NSString *)str {    for(int i=0; i< [str length];i++){        int a = [str characterAtIndex:i];        if( a > 0x4e00 && a < 0x9fff)        {            return YES;        }            }    return NO;    }

用法

if ([self PanDuan:@"aa!@#$%^&*(我)"]) {        NSLog(@"--->有中文");    }