动画后UITableViewCell位置关闭

Question

我在-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)进行动画制作。细胞基本上旋转（下面的代码）。他们每次加载到屏幕上时都会这样做。最初旋转的单元格（即开头屏幕上可见的单元格）看起来像＆＃34;之前＆＃34;快照如下。小（正常）缩进。向下滚动或向左滚动后，新单元格会在屏幕上显示动画，但它们看起来像＆＃34; After＆＃34;射击。它们被几个像素所取代。一旦我再次向上滚动，上部单元格将被重新加载，并且还有更大的缩进。所有这些都没问题，除了取决于滚动行为，有时一些单元格是缩进的，而其他单元格则不是，它看起来很糟糕。我尝试重置UITableViewCell的缩进属性，但它没有做任何事情。什么可能导致这种奇怪行为的想法？也许我不知道我应该设置的属性？谢谢！

在：

后：

//Animation Code Borrowed From http://www.thinkandbuild.it/animating-uitableview-cells/
//1. Setup the CATransform3D structure
CATransform3D rotation;
rotation = CATransform3DMakeRotation( (90.0*M_PI)/180, 0.0, 0.7, 0.4);
rotation.m34 = 1.0/ -600;

//2. Define the initial state (Before the animation)
cell.layer.shadowColor = [[UIColor blackColor]CGColor];
cell.layer.shadowOffset = CGSizeMake(10, 10);
cell.alpha = 0;

cell.layer.transform = rotation;
cell.layer.anchorPoint = CGPointMake(0, 0.5);

//3. Define the final state (After the animation) and commit the animation
[UIView beginAnimations:@"rotation" context:NULL];
[UIView setAnimationDuration:0.8];
cell.layer.transform = CATransform3DIdentity;
cell.alpha = 1;
cell.layer.shadowOffset = CGSizeMake(0, 0);
[UIView commitAnimations];

修改 在再次访问原始网站的源代码后，我注意到代码的更新，我应用了它：

if(cell.layer.position.x != 0){
    cell.layer.position = CGPointMake(0, cell.layer.position.y);
}

然而，它似乎没有解决这个问题，我认为这是解决这个动画的另一个定位问题。

Answer 1

我不确定只是尝试一下，

只需将图层位置强制为原点，请参见下面的代码

//1. Setup the CATransform3D structure
CATransform3D rotation;
rotation = CATransform3DMakeRotation( (90.0*M_PI)/180, 0.0, 0.7, 0.4);
rotation.m34 = 1.0/ -600;


//2. Define the initial state (Before the animation)
cell.layer.shadowColor = [[UIColor blackColor]CGColor];
cell.layer.shadowOffset = CGSizeMake(10, 10);
cell.alpha = 0;

cell.layer.transform = rotation;
cell.layer.anchorPoint = CGPointMake(0, 0.5);

if(cell.layer.position.x != 0)
{
    cell.layer.position = CGPointMake(0, cell.layer.position.y);
}

//add this and try
CGPoint point = cell.layer.position;
point.x = 0.0f; //setting the position back to original (for your case)
cell.layer.position = point;


//4. Define the final state (After the animation) and commit the animation
[UIView beginAnimations:@"rotation" context:NULL];
[UIView setAnimationDuration:0.8];
cell.layer.transform = CATransform3DIdentity;
cell.alpha = 1;
cell.layer.shadowOffset = CGSizeMake(0, 0);
[UIView commitAnimations];