ios在UILongPressGestureRecognizer

Question

如何获得多点触控和单点触控事件？

我尝试使用左手触摸移动（不要触摸），现在我在屏幕上单击右手指，但我尝试右手指触摸事件或触摸点（此时左手指仍然在屏幕上移动）

我设置了日志[gesture numberOfTouches]或[gesture numberOfTouchesRequired]。我仍然得到1，而不是得到2。

在我的ViewDidLoad方法中，我设置了以下代码：

 - (void)viewDidLoad {
     [super viewDidLoad];
 self.view.multipleTouchEnabled =  YES;
 self.view.exclusiveTouch = NO;

 UILongPressGestureRecognizer *panelLongPressGestureRecognizer =
 [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(panelLongPressRecgonizerAction:)];
 panelLongPressGestureRecognizer.delegate = self;

//panelLongPressGestureRecognizer.numberOfTapsRequired = 1;
//panelLongPressGestureRecognizer.numberOfTouchesRequired = 1;
panelLongPressGestureRecognizer.minimumPressDuration = 0.001;
 [self.view addGestureRecognizer:panelLongPressGestureRecognizer];


 UILongPressGestureRecognizer *panelLongDoublePressGestureRecognizer =
 [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(panelLongPressRecgonizerAction:)];
 panelLongDoublePressGestureRecognizer.delegate = self;
 panelLongDoublePressGestureRecognizer.numberOfTapsRequired = 2;
 panelLongDoublePressGestureRecognizer.numberOfTouchesRequired = 2;
 panelLongDoublePressGestureRecognizer.minimumPressDuration = 0.001;
 [self.view addGestureRecognizer:panelLongDoublePressGestureRecognizer];
 }

 - (void)panelLongPressRecgonizerAction:(UILongPressGestureRecognizer *) gestureRecognizer
 {
 switch (gestureRecognizer.state) {
    case UIGestureRecognizerStateBegan:
        NSLog(@" === long press began ===");
        break;
    case UIGestureRecognizerStatePossible:
        break;
    case UIGestureRecognizerStateChanged:
        NSLog(@" === long press changed ===");
        [self pressChanged:gestureRecognizer];
        break;
    case UIGestureRecognizerStateEnded:
        NSLog(@" === long press end ===");
        break;
    case UIGestureRecognizerStateCancelled:
        NSLog(@" === long press cancell ===");
        break;
    case UIGestureRecognizerStateFailed:
        NSLog(@" === long press failed ===");
        break;


}
NSLog(@" ");

}

- (void) pressChanged:(UILongPressGestureRecognizer *) gesture
{
    NSLog(@"moved guesture.number of touches:%ld", [gesture numberOfTouches]);
    NSLog(@"moved numberOfTouchesRequired of touches:%ld", [gesture numberOfTouchesRequired]);

}

我仍然得到日志：

 2015-05-11 14:25:46.117 DroneG2[7521:1149008]  === long press changed ===
 2015-05-11 14:25:46.118 DroneG2[7521:1149008] moved guesture.number of touches:1
 2015-05-11 14:25:46.118 DroneG2[7521:1149008] moved numberOfTouchesRequired of touches:1

有人知道我的代码中的问题在哪里吗？

我想在移动时获得其他手指触摸点或事件？

或者有其他方法可以实现多点触控坐标序列？

非常感谢你。

Answer 1

对于复杂的触摸事件使用 UIResponder的方法..

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;

计算和区分触摸事件。

Apple Doc for multitouch