Question

我在UIViewcontroller上有两个不同的UIView。

UIView是UIView（leftScreenView）和右UIView（rightScreenView）。

它们区分子视图leftJoystickView（在leftScreenView上）和rightJoystickView（在rightScreenView上）。

但我发现下面的问题：

当我触摸leftScreenView并移动时，现在我触摸右侧屏幕上的其他手指。

现在触摸事件总是在leftScreenView上。这不能区分leftScreenView和rightScreenView事件。

我需要触摸leftScreenView并移动并触摸rightScreenView移动是同一时间的不同事件（做移动）。

如何处理区分不同移动事件和开始事件的多点触控？

 #pragma mark ----- touch action -----
 -(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
 {
 //    NSLog(@"------touchesBegan-------");
     UITouch *touch = [[event allTouches] anyObject];

     CGPoint touchViewPoint = [touch locationInView:touch.view];

     CGPoint  touchLeftScreenPoint = [touch.view convertPoint:touchViewPoint toView:self.leftScreenView];
     CGPoint  touchRightScreenPoint = [touch.view convertPoint:touchViewPoint toView:self.rightScreenView];

     NSLog(@"touch left:%d",[self.leftScreenView pointInside:touchLeftScreenPoint withEvent:event]);
      NSLog(@"touch right:%d",[self.rightScreenView pointInside:touchRightScreenPoint withEvent:event]);

     NSLog(@"touch.tapCount:%ld", touch.tapCount);

     if( [self.leftScreenView pointInside:touchLeftScreenPoint withEvent:event] )
     {
         NSLog(@"began click left screen");

         self.leftStickLfConstraint.constant = touchLeftScreenPoint.x ;
         self.leftStickTopStickConstraint.constant = touchLeftScreenPoint.y ;


         [self.leftJoystickView touchesBegan:touches   withEvent:event];
     }else if( [self.rightScreenView pointInside:touchRightScreenPoint withEvent:event] )
     {

         NSLog(@"began click right screen");

         self.rightStickLfConstraint.constant = touchRightScreenPoint.x ;
         self.rightStickTopConstraint.constant = touchRightScreenPoint.y ;
         [self.rightJoystickView touchesBegan:touches withEvent:event];

     }


     NSLog(@"  ");
 }

移动事件如下：

 -(void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
 {
     UITouch *touch = [[event allTouches] anyObject];
     CGPoint touchViewPoint = [touch locationInView:touch.view];

     NSLog(@"moved touch.tapCount:%ld", touch.tapCount);
     NSLog(@"moved touches count:%ld", [touches count]);

     CGPoint  touchLeftScreenPoint = [touch.view convertPoint:touchViewPoint toView:self.leftScreenView];
     CGPoint  touchRightScreenPoint = [touch.view convertPoint:touchViewPoint toView:self.rightScreenView];

     if( [self.leftScreenView pointInside:touchLeftScreenPoint withEvent:event] )
{
         NSLog(@"touchesMoved click left screen");

         [self.leftJoystickView touchesMoved:touches withEvent:event];

     }else if( [self.rightScreenView pointInside:touchRightScreenPoint withEvent:event] )
     {
         NSLog(@"touchesMoved click right screen");

        [self.rightJoystickView touchesMoved:touches withEvent:event];
     }

 }

当我在移动时保持leftScreenView，然后触摸rightScreenView。

我总是左手触摸：1触摸右：0。

日志：

 2015-05-08 14:20:30.946 DroneG2[3606:942222] touchesMoved click left screen
 2015-05-08 14:20:30.947 DroneG2[3606:942222] touches count:1
 2015-05-08 14:20:30.962 DroneG2[3606:942222] moved touch.tapCount:1
 2015-05-08 14:20:30.962 DroneG2[3606:942222] moved touches count:1
 2015-05-08 14:20:30.962 DroneG2[3606:942222] touchesMoved click left screen
 2015-05-08 14:20:30.963 DroneG2[3606:942222] touches count:1
 2015-05-08 14:20:30.982 DroneG2[3606:942222] moved touch.tapCount:1
 2015-05-08 14:20:30.982 DroneG2[3606:942222] moved touches count:1
 2015-05-08 14:20:30.983 DroneG2[3606:942222] touchesMoved click left screen
 2015-05-08 14:20:30.983 DroneG2[3606:942222] touches count:1
 2015-05-08 14:20:30.984 DroneG2[3606:942222] touch left:1
 2015-05-08 14:20:30.985 DroneG2[3606:942222] touch right:0

如何在不同的uiview上处理多点触控？

我在viewdidload中添加了以下内容：

 self.leftScreenView.multipleTouchEnabled = NO;
 self.rightScreenView.multipleTouchEnabled = NO;
 //    self.leftScreenView.exclusiveTouch = NO;
 //    self.rightScreenView.exclusiveTouch = NO;

self.view.multipleTouchEnabled =  YES;

我的故事板截图：

enter image description here

非常感谢。

Answer 1

在UIGestureRecognizer内的每个观看次数中添加-viewDidLoad。使用UIGestureRecognizer，您可以跟踪手势的状态。例如，您可以使用以下内容。

//Add a gesture recognizer to each view
UIPanGestureRecognizer *panGesture = 
[[UIPanGestureRecognizer alloc] initWithTarget:self                                                                   
                                        action: @selector(handlePan:)];
panGesture.minimumNumberOfTouches = 1;
[self.myView addGestureRecognizer:panGesture];

现在-handlePan内部，您可以跟踪包含手势的状态和视图。

- (void)handlePan:(UIPanGestureRecognizer *)gesture{

    UIView *view = gesture.view; //View that contains gesture

    if(gesture.state == UIGestureRecognizerStateBegan){

    }else if(gesture.state == UIGestureRecognizerStateChanged){

    }else if(gesture.state == UIGestureRecognizerStateEnded){

    }

}

修改

要区分左视图和右视图，您可以为每个视图添加tag。

leftView.tag = 0; rightView.tag = 1;

然后在-handlePan:
内
UIView *view = gesture.view; //View that contains gesture if(view.tag == 0) //... if(view.tag == 1) //...

<强> EDIT2：

您需要将手势添加到左视图和右视图，而不是视图控制器的视图。

- (void)viewDidLoad { [super viewDidLoad]; self.leftScreenView.tag = 0; self.rightScreenView.tag = 1; UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action: @selector(handlePan:)]; panGesture.minimumNumberOfTouches = 1; [self.leftScreenView addGestureRecognizer:panGesture]; UIPanGestureRecognizer *panGesture1 = [[UIPanGestureRecognizer alloc] initWithTarget:self action: @selector(handlePan:)]; panGesture1.minimumNumberOfTouches = 1; [self.rightScreenView addGestureRecognizer:panGesture1]; }

Answer 2

您可以使用- touchesForView:的{{1}}处理此情况。 UIEvent会返回- touchesForView:集。检查返回的集合是否包含leftSideView或RightSideView，如果是，则处理move事件。以下是代码段：

UITouch

}

这也可以通过使用-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{ // get the touch set of leftside view NSSet *eventTouches1 = [event touchesForView:leftSideView]; // get the touch set of rightside view NSSet *eventTouches2 = [event touchesForView:rightSideView]; // check if the eventTouches1 is not null if (eventTouches1) { UITouch *touch1 = [[eventTouches1 allObjects] objectAtIndex:0]; if ([touch1.view isEqual:leftSideView]) { // handle drag event for left side view } } // check if the eventTouches2 is not null if (eventTouches2) { UITouch *touch2 = [[eventTouches2 allObjects] objectAtIndex:0]; if ([touch2.view isEqual:rightSideView]) { // handle drag event for right side view } }来实现。

iOS MultiTouch事件在不同的uiview中

2 个答案: