来源：http://www.open-open.com/lib/view/open1341882439838.html
这次讲的内容很简单：
1.首先我们还是创建一个Single View Application，然后打开MainStoryboard_iphone.storyboard,在里面放入俩lable和两个TextFiled:
2.接着开始写代码：ViewController.h:
1 #import <uikit uikit.h=""> 2 3 @interface ViewController : UIViewController{ 4 UITextField *nameField; 5 UITextField *numberField; 6 } 7 @property (nonatomic,retain) IBOutlet UITextField *nameField; 8 @property (nonatomic,retain) IBOutlet UITextField *numberField; 9 - (IBAction)backgroundTap:(id)sender; 10 - (IBAction)textFiledReturnEditing:(id)sender; 11 @end</uikit>
ViewController.m:
1 #import "ViewController.h" 2 3 @interface ViewController () 4 5 @end 6 7 @implementation ViewController 8 @synthesize nameField; 9 @synthesize numberField; 10 - (void)viewDidLoad 11 { 12 [super viewDidLoad]; 13 // Do any additional setup after loading the view, typically from a nib. 14 } 15 16 - (void)viewDidUnload 17 { 18 [super viewDidUnload]; 19 // Release any retained subviews of the main view. 20 } 21 //点击屏幕空白view时触发的事件 22 - (IBAction)backgroundTap:(id)sender{ 23 24 [nameField resignFirstResponder];//通知文本失去第一响应者状态 25 [numberField resignFirstResponder]; 26 } 27 28 //点击return时触发的事件? 29 - (IBAction)textFiledReturnEditing:(id)sender { 30 [sender resignFirstResponder]; 31 } 32 33 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 34 { 35 if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { 36 return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); 37 } else { 38 return YES; 39 } 40 } 41 @end
3.接着我们连接操作和输出口：
将背景view的类别设置为UIControl，这样我们就能对屏幕的事件进行处理了，将Control的touch down输出连接到backgroundTap事件上，因为点击软键盘会触发did end on exit，那我们就把两个textFiled的did end on exit输出连接到textFiledReturnEditing事件上。当然我们不要忘记将两个textFiled控件的输出与 ViewController的相应控件接口连接在一起。
4.运行程序看看效果：
点击textFiled时：
点击return或点击界面空白时：
转自：http://blog.csdn.net/itachi85/article/details/7664563
本文转自夏雪冬日博客园博客，原文链接：http://www.cnblogs.com/heyonggang/p/3465355.html，如需转载请自行联系原作者
