监听iPad键盘显示和隐藏事件

定义键盘显示事件

-(void)keyboardWillShow:(NSNotification *)notification

{

.....

}

定义输入完成后，按return键键盘隐藏

-(BOOL)textFieldShouldReturn:(UITextField *)textField

{

if([textField tag]==1)

{

[textField resignFirstResponder];

}

if(textField == editTextField)

{

[textField resignFirstResponder];

}

......

}

为虚拟键盘的右下角按钮定义事件

-(void)keyboardWillHide:(NSNotification *)notification

{

....

}

注册事件

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];

头文件中必须要有：

UITextFieldDelegate