iphone隐藏键盘代码

在View中使用UITextField时，经常需要输入完成后，隐藏键盘~~怎么实现呢？

要让ViewController实现UITextFieldDelegate代理，然后重写部分方法。

---------@interface ViewController---------

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UITextFieldDelegate>
{
    IBOutlet UILabel *label;
    IBOutlet UIButton *button;
    IBOutlet UITextField *txtField;
}

@property(nonatomic,retain) UILabel *label;
@property(nonatomic,retain) UIButton *button;
@property(nonatomic,retain) UITextField *txtField;
-(IBAction)changeLabel:(id)sender;

@end

---------ViewController.m---------

指定文本框的代理：

- (void)viewDidLoad
{
    [super viewDidLoad];
    txtField.delegate = self;
}

--------点击Enter的时候隐藏键盘-------

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;
}

--------点击view其他区域隐藏键盘--------

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