1.声明属性（记录将要编辑的输入框）
@property(nonatomic ,strong) UITextField * firstResponderTextF;(这里是记录将要编辑的输入框)
2.//监听键盘展示和隐藏的通知
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
//监听键盘展示和隐藏的通知
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}
3.#pragma maek UITextFieldDelegate
- (BOOL)textFieldShouldBeginEditingNew:(UITextField *)textField{
self.firstResponderTextF = textField;//当将要开始编辑的时候，获取当前的textField
return YES;
}
- (BOOL)textFieldShouldReturnNew:(UITextField *)textField{
[textFieldresignFirstResponder];
return YES;
}
4.#pragma mark : UIKeyboardWillShowNotification/UIKeyboardWillHideNotification
- (void)keyboardWillShow:(NSNotification*)notification{
CGRect rect = [self.firstResponderTextF.superview convertRect:self.firstResponderTextF.frame toView:self.view];//获取相对于self.view的位置
NSDictionary*userInfo = [notificationuserInfo];
NSValue* aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];//获取弹出键盘的fame的value值
CGRectkeyboardRect = [aValueCGRectValue];
keyboardRect = [self.view convertRect:keyboardRect fromView:self.view.window];//获取键盘相对于self.view的frame ，传window和传nil是一样的
CGFloatkeyboardTop = keyboardRect.origin.y;
NSNumber * animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];//获取键盘弹出动画时间值
NSTimeIntervalanimationDuration = [animationDurationValuedoubleValue];
if(keyboardTop
CGFloatgap = keyboardTop -CGRectGetMaxY(rect) -10;//计算需要网上移动的偏移量（输入框底部离键盘顶部为10的间距）
__weaktypeof(self)weakSelf =self;
[UIView animateWithDuration:animationDuration animations:^{
weakSelf.view.frame=CGRectMake(weakSelf.view.frame.origin.x, gap, weakSelf.view.frame.size.width, weakSelf.view.frame.size.height);
}];
}
}
- (void)keyboardWillHide:(NSNotification*)notification{
NSDictionary*userInfo = [notificationuserInfo];
NSNumber * animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];//获取键盘隐藏动画时间值
NSTimeIntervalanimationDuration = [animationDurationValuedoubleValue];
if (self.view.frame.origin.y < 0) {//如果有偏移，当影藏键盘的时候就复原
__weaktypeof(self)weakSelf =self;
[UIView animateWithDuration:animationDuration animations:^{
weakSelf.view.frame = CGRectMake(weakSelf.view.frame.origin.x, 0, weakSelf.view.frame.size.width, weakSelf.view.frame.size.height);
}];
}
}
5.// 退出键盘
-(void)touchesBegan:(NSSet *)toucheswithEvent:(UIEvent*)event{
if ([self.firstResponderTextF isFirstResponder])[self.firstResponderTextF resignFirstResponder];
[self.view endEditing:YES];
}
6.//移除键盘通知监听者
- (void)dealloc{
self.countDowntor.delegate = nil;
//移除键盘通知监听者
[[NSNotificationCenter defaultCenter]removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter]removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}
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