回缩键盘

一、键值监听

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWillShow:)

name:UIKeyboardWillShowNotification

object:nil];

//增加监听，当键退出时收出消息

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWillHide:)

name:UIKeyboardWillHideNotification

object:nil];

#pragma mark ------- Action

- (void)keyboardWillShow:(NSNotification *)aNotification

{

//获取键盘的高度

NSDictionary *userInfo = [aNotification userInfo];

NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];

CGRect keyboardRect = [aValue CGRectValue];

CGFloat keyHeight = keyboardRect.size.height;

self.view.top=100-keyHeight;

//    if ([_emailText isFirstResponder]) {

//        if(kDeviceHeight<_emailText.bottom+keyHeight+64)

//            self.view.top=64+(kDeviceHeight-_emailText.bottom-keyHeight-64);

//    }

}

- (void)keyboardWillHide:(NSNotification *)aNotification

{

//获取键盘的高度

self.view.top=64;

}

二、手势监听

UITapGestureRecognizer *tap1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(viewTapped:)];

tap1.cancelsTouchesInView = NO;

[self.view addGestureRecognizer:tap1];

#pragma mark----点击空白处收起键盘

-(void)viewTapped:(UITapGestureRecognizer*)tap1

{

[self.view endEditing:YES];

}