iOS5键盘弹出view自适应

Java代码  

1. [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];  
2.     [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];  
3.       
4. #ifdef __IPHONE_5_0  
5.     float version = [[[UIDevice currentDevice] systemVersion] floatValue];  
6.     if (version >= 5.0) {  
7.         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillChangeFrameNotification object:nil];  
8.     }  
9. #endif  

Java代码  

1. #pragma -  
2. #pragma keyboard notification  
3. - (void)keyboardWillShow:(NSNotification*)notification {  
4.     NSDictionary *userInfo = [notification userInfo];  
5.       
6.     NSValue* aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];  
7.       
8.     CGRect keyboardRect = [aValue CGRectValue];  
9.       
10.     NSValue *animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];  
11.     NSTimeInterval animationDuration;  
12.     [animationDurationValue getValue:&animationDuration];  
13.       
14.     [UIView beginAnimations:nil context:nil];  
15.     [UIView setAnimationDuration:animationDuration];  
16.       
17.     ... do something ...  
18.       
19.     [UIView commitAnimations];  
20. }  
21.   
22. - (void)keyboardWillHide:(NSNotification*)notification {  
23.     NSDictionary *userInfo = [notification userInfo];  
24.       
25.     NSValue* aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];  
26.       
27.     CGRect keyboardRect = [aValue CGRectValue];  
28.       
29.     NSValue *animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];  
30.     NSTimeInterval animationDuration;  
31.     [animationDurationValue getValue:&animationDuration];  
32.   
33.     [UIView beginAnimations:nil context:nil];  
34.     [UIView setAnimationDuration:animationDuration];  
35.       
36.     ... do something ...  
37.       
38.     [UIView commitAnimations];  
39. }  

改变键盘大小时也会更新视图