使用ImageView和touchesBegan制作图库的问题

Question

我正在尝试为我的iPhone应用创建图片库。我已经布局了imageViews，我希望它们在用户点击它们时增加大小，然后在它们发布时恢复正常。我制作的代码适用于第一张图片，但其余图片完全没有响应。即使我完全删除了第一个。

以下是我一直在尝试使用的代码，有没有人知道为什么它可能无法正常工作？

谢谢！

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
if ([touch view] == _imageOne)
{
CGRect newFrame = _imageOne.frame;
newFrame.size.width += 280;
newFrame.size.height += 280;
_imageOne.frame = newFrame;
}
if ([touch view] == _imageTwo)
{
    CGRect newFrame2 = _imageTwo.frame;
    newFrame2.size.width += 280;
    newFrame2.size.height += 280;
    _imageTwo.frame = newFrame2;
}
}

- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
if ([touch view] == _imageOne)
{
    CGRect newFrame = _imageOne.frame;
    newFrame.size.width -= 280;
    newFrame.size.height -= 280;
    _imageOne.frame = newFrame;
}
if ([touch view] == _imageTwo)
{
    CGRect newFrame2 = _imageTwo.frame;
    newFrame2.size.width -= 280;
    newFrame2.size.height -= 280;
    _imageTwo.frame = newFrame2;
}
}