IOS 弹出键盘移动视图

最新推荐文章于 2021-10-28 12:46:22 发布

原创最新推荐文章于 2021-10-28 12:46:22 发布 · 2.6k 阅读

1 ·

CC 4.0 BY-SA版权

iOS 专栏收录该内容

384 篇文章

订阅专栏

本文探讨了如何在iOS应用中实现键盘显示时的视图动画，并通过代码实例展示了隐藏键盘、调整窗口背景颜色以及视图动画的具体实现过程。

- (void)viewDidLoad {
[super viewDidLoad];

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

//隐藏键盘

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self.view endEditing:YES];
}

- (void)keyboardWillShow:(NSNotification *)notification {

    //改变window的背景颜色
    self.view.window.backgroundColor = self.view.backgroundColor;

    // 键盘退出的frame
    CGRect frame = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];

    //键盘实时y
    CGFloat keyY = frame.origin.y;


    if (_nextBtny <= keyY-LTloginInset ) {

        return;
    }

    CGFloat screenh = keyY-_nextBtny-LTloginInset;

    //动画时间
    CGFloat keyDuration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];

        //执行动画
    [UIView animateWithDuration:keyDuration animations:^{
        self.view.transform = CGAffineTransformMakeTranslation(0,screenh );
    }];
}

- (void)keyboardWillHide:(NSNotification *)notification {

    //动画时间
    CGFloat keyDuration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];

    //执行动画
    [UIView animateWithDuration:keyDuration animations:^{
        self.view.transform = CGAffineTransformMakeTranslation(0,0);
    }];

}

- (void)dealloc
{

    [[NSNotificationCenter defaultCenter] removeObserver:self name:nil object:nil];

}