TextView随键盘弹出上移高度

 1 - (void)viewDidLoad 
 2 { 
 3     [super viewDidLoad]; 
 4     // Do any additional setup after loading the view, typically from a nib. 
 5     self.textView=[[UITextView alloc]initWithFrame:self.view.frame]; 
 6     self.textView.text=@"请输入文字"; 
 7     [self.view addSubview:self.textView]; 
 8 } 
 9  
10 - (void)didReceiveMemoryWarning 
11 { 
12     [super didReceiveMemoryWarning]; 
13     // Dispose of any resources that can be recreated. 
14 } 
15  
16 - (void)viewWillAppear:(BOOL)animated 
17 { 
18     //注册通知,监听键盘出现 
19     [[NSNotificationCenter defaultCenter]addObserver:self 
20                                             selector:@selector(handleKeyboardDidShow:) 
21                                                 name:UIKeyboardDidShowNotification 
22                                               object:nil]; 
23     //注册通知，监听键盘消失事件 
24     [[NSNotificationCenter defaultCenter]addObserver:self 
25                                             selector:@selector(handleKeyboardDidHidden) 
26                                                 name:UIKeyboardDidHideNotification 
27                                               object:nil]; 
28     [super viewWillAppear:YES]; 
29 } 
30  
31 //监听事件 
32 - (void)handleKeyboardDidShow:(NSNotification*)paramNotification 
33 { 
34     //获取键盘高度 
35     NSValue *keyboardRectAsObject=[[paramNotification userInfo]objectForKey:UIKeyboardFrameEndUserInfoKey]; 
36      
37     CGRect keyboardRect; 
38     [keyboardRectAsObject getValue:&keyboardRect]; 
39      
40     self.textView.contentInset=UIEdgeInsetsMake(0, 0,keyboardRect.size.height, 0); 
41 } 
42  
43 - (void)handleKeyboardDidHidden 
44 { 
45     self.textView.contentInset=UIEdgeInsetsZero; 
46 } 
47  
48 - (void)viewDidDisappear:(BOOL)animated 
49 { 
50     [[NSNotificationCenter defaultCenter] removeObserver:self]; 
51 }