Ios UITouch触摸移动的手指位置通过关键帧动画设置视图动画

我正在重新写我的问题，因为它被修改了很多，现在它变成了一个新问题

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    location = [touch locationInView:self.view];
    CGPoint prevLocation = [touch previousLocationInView:self.view];
    CGFloat distanceFromPrevious = [self distanceBetweenPoints:location :prevLocation];
    NSTimeInterval timeSincePrevious = event.timestamp - self.previousTimestamp;
    if (locArray == NULL) {
        locArray = [[NSMutableArray alloc] init];
    }
    [locArray addObject:[NSValue valueWithCGPoint:prevLocation]];
    CGFloat speed = distanceFromPrevious/timeSincePrevious;
    self.previousTimestamp = event.timestamp;

    //NSLog(@"speed %f | time %f", speed, timeSincePrevious);

}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    CALayer *animLayer = ball.layer;
    animLayer.bounds = ball.bounds;
    animLayer.position = CGPointMake(self.view.frame.size.width/2, 0);
    CGMutablePathRef path = CGPathCreateMutable();
    CGPathMoveToPoint(path, NULL, self.view.frame.size.width/2, 380);

    for (int i=0; i<[locArray count]; i++) {
        NSValue *val = [locArray objectAtIndex:i];
        CGPoint p = [val CGPointValue];
        CGPathAddLineToPoint(path, NULL, p.x, p.y);

        NSLog(@"Points %f %d", p.y, i);
    }
    CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"path"];
    animation.duration = 4.0f;
    animation.path = path;
    animation.removedOnCompletion = NO;
    CGPathRelease(path);

    [animLayer addAnimation:animation forKey:@"path"];
    locArray = nil;

}

animationWithKeyPath值现在是位置，现在正在工作：）

我有一些小问题，但我已经解决了

但我的新问题是：

完成动画并停止后，“球视图”将返回到其起点

我希望它停留在路径的最后一点。

解决方案：我终于找到了解决方案

我添加了一个CGPoint finalPoint=[locArray count]-1值。 那么

---

这一切都解决了。现在，球停留在TouchsMoved事件捕获的手指触摸的最终位置。

更改中心属性Yok后，您无需重新绘制球！丹克，我删除了重画，但它仍然没有给我想要的。我希望动画在我完成触摸事件后开始。若要沿路径移动球，需要创建一个CAKeyframeAnimation并为其路径属性指定一个CGPath。它将无法与animateWithDuration一起工作。再次感谢！我现在正在尝试并将在这里告知结果。Phix，我尝试添加CAKeyframeAnimation，但它不起作用。这是我有生以来第一次尝试。我不知道现在有什么问题。

CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];

animLayer.position = finalPoint;