IOS 关闭键盘

如果你用interface builder，那么下面的这片文章很值得参考：

http://www.howzhi.com/group/iosDevelop/discuss/1880

如果是用村纯代码：

先实现UITextFiledDelegate:

@interface LoginPageViewController : UIViewController <UITextFieldDelegate>

加入如下方法：

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [usernameTextFiled resignFirstResponder ];
    [passwdTextFiled resignFirstResponder ];
}

将文本框的代理设为自己：

usernameTextFiled.delegate = self;
passwdTextFiled.delegate = self;

也可以用GestureRecongnizer实现：

 - (void)viewDidLoad

{   

    UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self    action:@selector(backupgroupTap:)];
    tapGestureRecognizer.numberOfTapsRequired = 1;
    [self.view addGestureRecognizer: tapGestureRecognizer];   //只需要点击非文字输入区域就会响应    
    [tapGestureRecognizer setCancelsTouchesInView:NO]; 
}
-(void)backupgroupTap:(id)sender{
[textField1 resignFirstResponder]; //关闭所有UITextField控件的键盘。。。
[textField2 resignFirstResponder]; 
}