ios - 如何扩展tap来处理连续触摸？

Question

当屏幕被“点击”时，我使用下面的代码来发射射弹(在基于 Sprite Kit 的游戏中)，这一切都工作正常。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，有人能给我指出正确的方向吗？

// 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];
}

Answer 1

使用UILongPressGestureRecognizer相反:

// 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];
}

或使用UIResponder's touchesBegan:withEvent: 和 touchesEnded:withEvent: 方法:

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

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