iOS 正則表達(dá)式判斷UITextField是否為全漢字，全字母，全數(shù)字，數(shù)字和字母

判斷全漢字（這個問題苦惱了我很久，現(xiàn)在很方便，幾行代碼就搞定）：

if ([self deptNameInputShouldChinese]) {
    [DemonAlertHelper showToastWithMessage:@"只能是中文"];
    return;
}

調(diào)用這個方法就可

pragma mark--

pragma mark 輸入中文

• (BOOL) deptNameInputShouldChinese
  {
  NSString *regex = @"[\u4e00-\u9fa5]+";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
  if (![pred evaluateWithObject:inputTextField.text]) {
  return YES;
  }
  return NO;
  }
  判斷全數(shù)字：

• (BOOL) deptNumInputShouldNumber
  {
  NSString regex =@"[0-9]";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
  if (![pred evaluateWithObject:inputTextField.text]) {
  return YES;
  }
  return NO;
  }
  判斷全字母：

• (BOOL) deptPassInputShouldAlpha
  {
  NSString regex =@"[a-zA-Z]";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
  if (![pred evaluateWithObject:inputTextField.text]) {
  return YES;
  }
  return NO;
  }
  判斷僅輸入字母或數(shù)字：

• (BOOL) deptIdInputShouldAlphaNum
  {
  NSString regex =@"[a-zA-Z0-9]";
  NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
  if (![pred evaluateWithObject:inputTextField.text]) {
  return YES;
  }
  return NO;
  }