如何延长点击以处理连续触摸？

Posted 2023-02-27

【中文标题】如何延长点击以处理连续触摸？

【英文标题】：How to extend tap to handle continuous touches?

【发布时间】：2014-01-16 09:40:00

【问题描述】：

当屏幕被“点击”时，我正在使用下面的代码发射弹丸（在基于 Sprite Kit 的游戏中），这一切正常。但是我想扩展它，以便在用户“触摸并按住屏幕”时重复调用 handleTap 有人能指出我正确的方向吗？

// INITIAL SETUP
UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];
[tapRecognizer setNumberOfTapsRequired:1];
[tapRecognizer setNumberOfTouchesRequired:1];
[view addGestureRecognizer:tapRecognizer];

.

// WHEN TAPPED
- (void)handleTap:(UITapGestureRecognizer *)recognizer 
    NSLog(@"%s", __PRETTY_FUNCTION__);
    [self setupAndFireProjectile];

【参考方案1】：

改用UILongPressGestureRecognizer：

// INITIAL SETUP
UILongPressGestureRecognizer *recognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleTouch:)];
[view addGestureRecognizer:recognizer];

.

// WHEN TAPPED
- (void)handleTouch:(UILongPressGestureRecognizer *)recognizer 
    NSLog(@"%s", __PRETTY_FUNCTION__);
    [self setupAndFireProjectile];

或者使用UIResponder'stouchesBegan:withEvent:和touchesEnded:withEvent:方法：

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


- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 
     // End shooting

【讨论】：

谢谢安德烈，非常感谢。