当我点击UICollectionViewCell时,如何使其翻转并放大以显示模态视图的动画效果?
当我点击UICollectionViewCell时,如何使其翻转并放大以显示模态视图的动画效果?
这是我在另一个项目中使用过的内容,效果非常好:
- (BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
if (cell.selected) {
[collectionView deselectItemAtIndexPath:indexPath animated:YES];
[UIView transitionWithView:cell
duration:0.2
options:UIViewAnimationOptionTransitionFlipFromLeft
animations:^{
[cell setFrame:self.selectedCellDefaultFrame];
cell.transform = self.selectedCellDefaultTransform;
}
completion:^(BOOL finished) {
self.selectedCellDefaultFrame = CGRectZero;
[collectionView reloadItemsAtIndexPaths:@[indexPath]];
}];
return NO;
}
else {
return YES;
}
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
[cell.superview bringSubviewToFront:cell];
self.selectedCellDefaultFrame = cell.frame;
self.selectedCellDefaultTransform = cell.transform;
[UIView transitionWithView:cell
duration:0.2
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
[cell setFrame:collectionView.bounds];
cell.transform = CGAffineTransformMakeRotation(0.0);
}
completion:^(BOOL finished) {}];
}
以下是需要翻译的内容:
这里有不同的事情:
bringSubviewToFront:
消息调用用于防止单元格在其他单元格后面动画展示selectedCellDefaultFrame
和selectedCellDefaultTransform
来保存单元格的默认状态,并在取消选择时重新初始化它们UICollectionView
的reloadItemsAtIndexPaths:
方法,以确保位置重置完全完成如果您有任何问题,请告知我。
祝你好运!
UICollectionViewCell* cell = [collectionView cellForItemAtIndexPath:indexPath];
[UIView animateWithDuration:1.0
delay:0
options:(UIViewAnimationOptionAllowUserInteraction)
animations:^
{
NSLog(@"starting animation");
[UIView transitionFromView:cell.contentView
toView:newView
duration:.5
options:UIViewAnimationOptionTransitionFlipFromRight
completion:nil];
}
completion:^(BOOL finished)
{
NSLog(@"animation end");
}
];