平移手势正在进行时更改选择器

时间:2012-11-28 09:45:01

标签: objective-c ios uipangesturerecognizer

我有一个UIView C是UIView B的子视图,它是UIView A的子视图。我使用一个名为“selectorX”的选择器向UIView C添加一个UIPanGestureRecogizer,当UIView C离开UIView A帧时我想要它,然后它的superview更改为UIView A,我也想用另一个选择器“selectorY”更改其UIPanGestureRecognizer。

这是我的代码:

-(void)selectorX:(UIPanGestureRecognizer*)sender{


     CGPoint translation = [sender translationInView:self.view];
     sender.view.center = CGPointMake(sender.view.center.x, sender.view.center.y +translation.y);
    [sender setTranslation:CGPointMake(0, 0) inView:sender.view];

    UIView *uiViewC=(ImagenFichaView *)sender.view;
    if (sender.view.center.y+translation.y<-50) {
         [uiViewC removeFromSuperView]
         CGPoint newCenter=[sender locationInView:uiViewA];
         [uiViewA addSubview:uiViewC];
         uiViewC.center=newCenter;
         UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(selectorY:)];
    panRecognizer.delegate=self;
    [uiViewC removeGestureRecognizer:sender];
    [uiViewC addGestureRecognizer:panRecognizer];
    }

}

一切顺利但2 UIPanGestureRecognizers之间的过渡并不是连续的。当uiViewC更改其superView时,拖动操作将停止。我必须从屏幕上取下手指并再次开始运动。我该怎么做才能使机芯继续运转? 非常感谢你

1 个答案:

答案 0 :(得分:0)

为了获得连续移动,我没有从uiViewB中删除uiViewC,我只是将它添加到uiViewA并解决了问题。