键盘位置改变View跟着变化

键盘位置改变View跟着变化

1、订阅键盘的frame即将改变的通知

//监听键盘frame变化

[[NSNotificationCenter  defaultCenter] addObserver:selfselector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification  object:nil];

2、通知到达后执行的方法,通知到达改变view的位置

- (void)keyboardWillChangeFrame:(NSNotification*)noti

{

//NSLog(@"%@",noti.userInfo);

//键盘弹出/消失的时候。获取最终位置

CGRectkeyBoardFrame =

[noti.userInfo[@"UIKeyboardFrameEndUserInfoKey"]  CGRectValue];

//用键盘的最终的y值- view自身的高度,就是要移动的距离

CGFloat  ct = keyBoardFrame.origin.y-self.view.frame.size.height;

//获取键盘的动画时间

CGFloatduration =

[noti.userInfo[@"UIKeyboardAnimationDurationUserInfoKey"]  floatValue];

[UIView animateWithDuration:duration  animations:^{//平移view

self.view.transform=CGAffineTransformMakeTranslation(0, ct);

}];}

3、在销毁方法中取消通知

- (void)dealloc

{

//取消订阅通知

[[NSNotificationCenter defaultCenter]  removeObserver:self];

}

4、拖动tableView取消键盘

#pragma mark -scrollView的代理方法-- UITableViewDelegate -》UIScrollViewDelegate

- (void)scrollViewWillBeginDragging:(UIScrollView*)scrollView

{

    //退出键盘

    [self.view endEditing:YES];

}

5、点击cell 取消键盘

     //点击cell,取消键盘

- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event

{

      [self.superview.superview.superview endEditing:YES];

}