在我的 spritekit 游戏中，我试图使 2 个 UISwipeGestureRecognizers 可以同时被识别，但是，我无法这样做。任何帮助将不胜感激，在此先感谢。下面是我的代码...
在 ViewDidLoad 中:
UISwipeGestureRecognizer *leftSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(leftSwiped1:)];
[leftSwipe1 setDirection:UISwipeGestureRecognizerDirectionLeft];
[leftSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:leftSwipe1];
UISwipeGestureRecognizer *rightSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwiped1:)];
[rightSwipe1 setDirection:UISwipeGestureRecognizerDirectionRight];
[rightSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:rightSwipe1];
ViewDidLoad之后:
-(void)rightSwiped1:(UIGestureRecognizer *)gestureRecognizer {
CGPoint pt = [gestureRecognizer locationInView:self.view];
if(pt.x < (self.view.bounds.size.width/2))
{
SKNode *person1 = [self childNodeWithName:@"person1"];
SKAction *moveRight = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) - 90, CGRectGetMidY(self.frame) + 200) duration:0.1f];
[person1 runAction:moveRight];
} else if (pt.x > (self.view.bounds.size.width/2)) {
SKNode *person2 = [self childNodeWithName:@"person2"];
SKAction *moveRight2 = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) + 400, CGRectGetMidY(self.frame) + 200) duration:0.1f];
[person2 runAction:moveRight2];
}
}
-(void)leftSwiped1:(UIGestureRecognizer *)gestureRecognizer {
CGPoint pt = [gestureRecognizer locationInView:self.view];
if(pt.x < (self.view.bounds.size.width/2))
{
SKNode *person1 = [self childNodeWithName:@"person1"];
SKAction *moveLeft = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) - 400, CGRectGetMidY(self.frame) + 200) duration:0.1f];
[person1 runAction:moveLeft];
} else if (pt.x > (self.view.bounds.size.width/2)) {
SKNode *person2 = [self childNodeWithName:@"person2"];
SKAction *moveLeft2 = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) + 90, CGRectGetMidY(self.frame) + 200) duration:0.1f];
[person2 runAction:moveLeft2];
}
}
-(BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{
return YES;
}
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
return YES;
}
最佳答案
您从未分配 UISwipeGestureRecognizers 的 delegate 属性，因此您的委托(delegate)方法永远不会被调用。
您只需执行以下操作即可解决此问题:
UISwipeGestureRecognizer *leftSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(leftSwiped1:)];
leftSwipe1.delegate = self;
[leftSwipe1 setDirection:UISwipeGestureRecognizerDirectionLeft];
[leftSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:leftSwipe1];
UISwipeGestureRecognizer *rightSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwiped1:)];
rightSwipe1.delegate = self;
[rightSwipe1 setDirection:UISwipeGestureRecognizerDirectionRight];
[rightSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:rightSwipe1];
确保您也遵守 UIGestureRecognizerDelegate 协议(protocol):
@interface YourViewController <UIGestureRecognizerDelegate>
...
@end
关于ios - UISwipeGestureRecognizers 不会被同时识别，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35384193/