/**********1.通过通知中心监听键盘显隐***************/
//监听键盘显隐
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWithShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWithHidden:) name:UIKeyboardWillHideNotification object:nil];
#pragma mark 键盘显隐
-(void)keyboardWithShow:(NSNotification *)noti
{
//获取键盘大小 获得键盘坐标
CGSize keyBoardSize = [[noti.userInfo objectForKey:UIKeyboardFrameEndUserInfoKey]CGRectValue].size;
}
-(void)keyboardWithHidden:(NSNotification *)noti
{}
/***********2.使用view的touchesBegan:触摸事件来实现对键盘的隐藏，当点击view的区域就会触发这个事件************/
- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent *)event{
[_searchTextField resignFirstResponder];
}
/***********修改xib中UIView的Custom class为UIControl，UIControl是一些常用控件如UIButton的父类，是UIView的派生类，实现了对触摸和下按的封装。********/
1、首先设置xib中得UIView的Custom class为UIControl
2、设置关系事件，将xib中得UIView拖到.h区中
3、编写隐藏代码：
- (IBAction)touchView:(id)sender {
[self.view endEditing:YES];
}
