在iPhone上跟踪攻丝坐标

Question

我想移动UIImageView通过tappig屏幕上的位置。我如何获得攻牙手指的X，Y坐标？

在viewDidLoad.m

Answer 1

，这可能做的工作：

/* Create the Tap Gesture Recognizer */ 
self.tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTaps:)]; 

/* The number of fingers that must be on the screen */ 
self.tapGestureRecognizer.numberOfTouchesRequired = 1; 
/* The total number of taps to be performed before the gesture is recognized */ 
self.tapGestureRecognizer.numberOfTapsRequired = 1; 

/* Add this gesture recognizer to our view */ 
[self.view addGestureRecognizer:self.tapGestureRecognizer]; 

然后在handleTaps：方法

- (void) handleTaps:(UITapGestureRecognizer*)paramSender{ 
    NSUInteger touchCounter = 0; 
    for (touchCounter = 0; touchCounter < paramSender.numberOfTouchesRequired; touchCounter++) 
    { 
     CGPoint touchPoint = [paramSender locationOfTouch:touchCounter inView:paramSender.view]; 
     NSLog(@"Touch #%lu: %@", (unsigned long)touchCounter+1, NSStringFromCGPoint(touchPoint)); 
    } 
} 

当然，要实现对您的需求handleTaps方法。

Answer 2

您可以使用以下任何方法

如果你希望它是在移动感动开始活动，如果你希望它是在结束事件的触摸移动使用

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

，使用此

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

并放置粘贴下面

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
     CGPoint pt = [[touches anyObject] locationInView:self.view]; 
     imageView.center = CGPointMake(pt.x,pt.y); 
} 

的代码

在上面的代码中，pt包含触摸位置的x和y坐标。 此外，您也可以使用动画来平滑移动。