设置UItextField的边框
[resultTextFieldsetBorderStyle:UITextBorderStyleRoundedRect];
弹出数字键盘：
将UITextField的keyboardType设置为：
UIKeyboardTypeNumberPad
就能弹出数字键盘
键盘类型
typedef enum {
UIKeyboardTypeDefault, 默认键盘，支持所有字符
UIKeyboardTypeASCIICapable, 支持ASCII的默认键盘
UIKeyboardTypeNumbersAndPunctuation, 标准电话键盘，支持＋＊＃字符
UIKeyboardTypeURL, URL键盘，支持.com按钮 只支持URL字符
UIKeyboardTypeNumberPad, 数字键盘
UIKeyboardTypePhonePad, 电话键盘
UIKeyboardTypeNamePhonePad, 电话键盘，也支持输入人名
UIKeyboardTypeEmailAddress, 用于输入电子 邮件地址的键盘
UIKeyboardTypeDecimalPad, 数字键盘 有数字和小数点
UIKeyboardTypeTwitter, 优化的键盘，方便输入@、#字符
UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable,
} UIKeyboardType;
隐藏键盘：
1、点击空白处隐藏键盘
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[resultTextFieldresignFirstResponder];
[resultTextFieldresignFirstResponder];//点击空白处也要隐藏键盘
}
2、点击return按钮键盘消失
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
returnYES;
}
-(void)textFieldDidEndEditing:(UITextField *)textField
{
[textField resignFirstResponder];
}