iOS設置移動手勢識別器的移動容差

Question

有沒有辦法確保任何包含超過一定移動量的敲擊被丟棄？就這一點而言，作爲水龍頭的重要性可能涉及手指的大量滑動。我想通過使用touchesBegan :, touchesMoved：等來處理不同的「點按和移動」。

Answer 1

可能不是您正在尋找的答案。但我已經解決了這個問題，而是通過常規觸摸順序自己來做。對於這個工作，你也希望有self.multipleTouchEnabled = NO

@interface myView(){ 
    CGPoint _touchStartPoint; 
} 
@end 

@implementation myView 

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ 
    _touchStartPoint = [[touches anyObject] locationInView:self]; 
} 

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ 
    [self checkDistance: [[touches anyObject] locationInView:self]]; 
} 


-(void)checkDistance:(CGPoint)p{ 

    static CGFloat dX; 
    dX = p.x - _touchStartPoint.x; 

    static CGFloat dY; 
    dY = p.y - _touchStartPoint.y; 

    static CGFloat dist; 
    dist = sqrt(dX*dX + dY*dY); 

    /* movement of less than 10 pixels */ 
    if(dist < 10){ 
     [self tap]; 
    } 
} 

-(void)tap{ 
    /* do something with your tap*/ 
} 


@end