Question

我做了一个动画，淡入并淡出一个单元格。当我按下单元格（整个单元格上的一个按钮）时，动作通过collectionView上的协议委托并弹出到另一个控制器（detailController）。

细胞

 - (IBAction)cellButtonPressed:(id)sender {
    [self fadeIn];
}

-(void)fadeIn {
    [UIView animateWithDuration:0.5
                          delay:0.0
                        options:0.0
                     animations:^{
                         self.coverAlbumPhoto.alpha = 0.0f;
                         self.shadowView.alpha = 0.0f;
                         self.mountainBorderImageView.alpha = 0.0f;

                     } completion:^(BOOL finished) {
                         [self fadeOut];
                     }];
}
-(void)fadeOut {
    [UIView animateWithDuration:0.5
                          delay:0.0
                        options:0.0
                     animations:^{
                         self.coverAlbumPhoto.alpha = 1.0f;
                         self.shadowView.alpha = 1.0f;
                         self.mountainBorderImageView.alpha = 1.0f;

                     } completion:^(BOOL finished) {
                         if ([self.delegate respondsToSelector:@selector(tapCellButtonAtIndexPath:)]) {
                             [self.delegate tapCellButtonAtIndexPath:self.indexPath];
                         }
                     }];
}

收藏视图

(void)tapCellButtonAtIndexPath:(NSIndexPath *)indexPath {
    ArtworkModel *artworkModel = (ArtworkModel *)[listOfArtworks objectAtIndex:indexPath.row];

    FBWorkDetailsViewController *dvc = [[FBWorkDetailsViewController alloc] initWithArtwork:artworkModel];
    FBLeftMenuViewController *left = [[FBLeftMenuViewController alloc] init];
    MFSideMenuContainerViewController *container = [MFSideMenuContainerViewController
                                                    containerWithCenterViewController: dvc
                                                    leftMenuViewController: left
                                                    rightMenuViewController:nil
                                                    withHeader: YES];
    [container.titleLabel setText:@"WORK DETAILS"];
    [self.navigationController pushViewController: container animated: YES];
}

问题是动画太慢了。谁能解释一下为什么？感谢。

Answer 1

你有2个动画，每个动画的持续时间为.5秒。这总持续时间为1秒。如果您希望它更快，请使用更短的持续时间。总动画时间为.2到.3秒可能是一个很好的起点，所以请尝试将每个步骤的持续时间缩短为0.15秒（总共0.3秒）。

淡入和淡出动画太慢了

1 个答案: