检测触摸并按住屏幕iPhone（Xcode）[重复]

Posted 2023-02-27

【中文标题】检测触摸并按住屏幕iPhone（Xcode）[重复]

【英文标题】：Detecting Touch and hold on screen IPhone (Xcode) [duplicate]

【发布时间】：2017-06-19 11:22:11

【问题描述】：

我正在尝试找出如何在我制作的游戏中检测触摸并按住屏幕的方法。我使用触摸开始进行单击（使角色向上移动）当他们触摸并保持按住时，我希望角色直接向前移动。

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

 //code to make him move up

    

关于如何检测触摸和按住的任何想法？

【问题讨论】：

我认为您需要使用 UILongPressGestureRecognizer 触摸并按住屏幕

你知道我应该怎么写吗？

我的意思是代码

请在下方查看我的回答，了解更多详情***.com/questions/6179347/uibutton-long-press-event 或***.com/questions/34548263/…

【参考方案1】：

Objective-c

// Add guesture recognizer
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(buttonDidLongPress:)];
    [self.button addGestureRecognizer:longPress];

// Call back event
- (void)buttonDidLongPress:(UILongPressGestureRecognizer*)gesture

    switch (gesture.state) 
        case UIGestureRecognizerStateBegan:
        
            // Code
        
            break;
        case UIGestureRecognizerStateEnded:
        
            //Code
        
            break;
        default:
            break;
    

斯威夫特

// Add guesture recognizer
        let longPress = UILongPressGestureRecognizer(target: self, action: #selector(longPress(_:)))
        self.button.addGestureRecognizer(longPress)

// Call back event
func longPress(guesture: UILongPressGestureRecognizer) 

        switch guesture.state 
        case UIGestureRecognizerState.began:
            //Code
            break

        case UIGestureRecognizerState.ended:
            //Code
            break

        default:
            break
        
    

别忘了用 UIGestureRecognizerDelegate 扩展你的类

【参考方案2】：

试试：

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)];
[self.view addGestureRecognizer:longPress];

-(void) handleLongPress: (UIGestureRecognizer *)longPress 
switch (longPress.state) 
    case UIGestureRecognizerStateBegan:
        // Called when long press for minimum time duration
        break;
    case UIGestureRecognizerStateChanged:
        // Long pressed and dragged 
        break;
    case UIGestureRecognizerStateRecognized:
        // Successfully recognised Long touch
        break;

    default:
        break;

if (longPress.state==UIGestureRecognizerStateEnded) 
    NSLog(@"LONG PRESSED");

【讨论】：

我试过没有运气，我应该在哪里放置：UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)]; [self.view addGestureRecognizer:longPress];

我把它放在 touchesbegan 中，但没有用..

UILongPressGestureRecognizer 将替代 touchesbegan，你应该使用其中一个

在UIGestureRecognizerStateEnd 做你的事情。代码更新