手指离开手机屏幕后UIView自动向上滑动

Posted 2023-03-13

【中文标题】手指离开手机屏幕后UIView自动向上滑动

【英文标题】：UIView sliding upward direction automatically after removing the finger from the phone screen

【发布时间】：2016-07-25 05:14:28

【问题描述】：

这是我目前正在处理的屏幕。正如您在下面看到的那样，我使用了标签和四个按钮的 UIView。在此之下，我使用了表格视图来显示菜单。我使用 SwipeGesture 来上下滑动视图。每当我触摸背景图像时，我现在想要的 UIView 完全向下滑动并且当我移开手指时 从屏幕上，UIView 会自动反弹到如图所示的相同位置。谁能帮帮我？？

这是我迄今为止工作的代码-

UISwipeGestureRecognizer *gestureRecognizerUp = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeHandlerUp:)];
[gestureRecognizerUp setDirection:(UISwipeGestureRecognizerDirectionUp)];
[self.subview addGestureRecognizer:gestureRecognizerUp];

UISwipeGestureRecognizer *gestureRecognizerDown = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeHandleDown:)];
[gestureRecognizerDown setDirection:(UISwipeGestureRecognizerDirectionDown)];
[self.subview addGestureRecognizer:gestureRecognizerDown];


- (void)swipeHandlerUp:(UISwipeGestureRecognizer *)sender 
    if (sender.direction == UISwipeGestureRecognizerDirectionUp)
        [UIView animateWithDuration:0.3 animations:^
            CGPoint Position = CGPointMake(self.view.frame.origin.x, self.view.frame.origin.y+20);
            self.subview.frame = CGRectMake(Position.x , Position.y , self.subview.frame.size.width, self.subview.frame.size.height);
            [self.navigationController popViewControllerAnimated:YES];
        ];
    


- (void)swipeHandleDown:(UISwipeGestureRecognizer *)sender 
    if (sender.direction == UISwipeGestureRecognizerDirectionDown)
        [UIView animateWithDuration:0.3 animations:^
            CGPoint Position = CGPointMake(self.view.frame.origin.x , self.view.frame.origin.y+430);
            self.subview.frame = CGRectMake(Position.x , Position.y , self.subview.frame.size.width, self.subview.frame.size.height);
            [self.navigationController popViewControllerAnimated:YES];
        ];
    

【问题讨论】：

你能不能用touchEnd方法来识别手指松开。

我不太清楚。这行得通吗？？

在您的 swipeHandlerUp 方法中，您必须向上移动框架。因此，对于 Y 轴，请执行以下操作 - self.view.frame.origin.y -200。然后对于 swipeHandleDown 方法，-self.view.frame.origin.y +200。

对我不起作用 :( @Signare

显示任何错误？ @pri 你的方法正在执行？。

【参考方案1】：

你可以在-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event;这样做

并确保取消选择所有三个手势行为，例如您的 swipeGestures。

Your_Swipe_gesture_Object.delaysTouchesBegan = NO;
Your_Swipe_gesture_Object.delaysTouchesEnded = NO;
Your_Swipe_gesture_Object.cancelsTouchesInView = NO;

【参考方案2】：

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

[super touchesBegan:touches withEvent:event];
   [UIView animateWithDuration:0.3 animations:^
            CGPoint Position = CGPointMake(self.view.frame.origin.x, self.view.frame.origin.y+20);
            self.subview.frame = CGRectMake(Position.x , Position.y , self.subview.frame.size.width, self.subview.frame.size.height);
            [self.navigationController popViewControllerAnimated:YES];
        ];

-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

[super touchesBegan:touches withEvent:event];
   [UIView animateWithDuration:0.3 animations:^
            CGPoint Position = CGPointMake(self.view.frame.origin.x , self.view.frame.origin.y+430);
            self.subview.frame = CGRectMake(Position.x , Position.y , self.subview.frame.size.width, self.subview.frame.size.height);
            [self.navigationController popViewControllerAnimated:YES];
        ];

【讨论】：

抱歉 saurabh 不是子视图必须通过拖动视图完全下降。当手指松开时，它应该会自动出现

当你拖动手指查看..你想查看显示吗？

我不明白你在说什么。

这里没有办法发送视频吗？这样我就可以展示我到底想要什么

@pri 我的代码中的主要问题是什么？在我身边工作得很好。