iOS 隐藏手机号码中间的四位数字

//验证手机号码

-(NSString *)numberSuitScanf:(NSString*)number{

//首先验证是不是手机号码

NSString *MOBILE = @"^1(3[0-9]|4[57]|5[0-35-9]|8[0-9]|7[06-8])\\\\d{8}$";

NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];

BOOL isOk = [regextestmobile evaluateWithObject:number];

if (isOk) {//如果是手机号码的话

NSString *numberString = [number stringByReplacingCharactersInRange:NSMakeRange(3, 4) withString:@"****"];

return numberString;

}

return number;

}