在按下UIButton之前预先加载动画图像

Question

我在一个视图控制器上有5个动画。这已经是非常强烈的记忆强度，因为它们是视网膜质量。

这是我的密码

//Panel 1 Animation
    NSArray *panel1Frames = [NSArray array];
    panel1Frames = [[NSArray alloc] initWithObjects:
                 [UIImage imageNamed:@"origami_panel010001.png"],
                 [UIImage imageNamed:@"origami_panel010002.png"],
                 [UIImage imageNamed:@"origami_panel010004.png"],
                 [UIImage imageNamed:@"origami_panel010005.png"],
                 [UIImage imageNamed:@"origami_panel010006.png"],
                 [UIImage imageNamed:@"origami_panel010007.png"],
                 [UIImage imageNamed:@"origami_panel010008.png"],
                 [UIImage imageNamed:@"origami_panel010009.png"],
                 [UIImage imageNamed:@"origami_panel010010.png"],
                 [UIImage imageNamed:@"origami_panel010011.png"],
                 [UIImage imageNamed:@"origami_panel010012.png"],
                 [UIImage imageNamed:@"origami_panel010013.png"],
                 [UIImage imageNamed:@"origami_panel010014.png"],
                 [UIImage imageNamed:@"origami_panel010015.png"],
                 [UIImage imageNamed:@"origami_panel010016.png"],
                 [UIImage imageNamed:@"origami_panel010017.png"],
                 [UIImage imageNamed:@"origami_panel010018.png"],
                 [UIImage imageNamed:@"origami_panel010019.png"],
                 [UIImage imageNamed:@"origami_panel010020.png"],
                 [UIImage imageNamed:@"origami_panel010021.png"],
                 [UIImage imageNamed:@"origami_panel010022.png"],
                 [UIImage imageNamed:@"origami_panel010023.png"],
                 [UIImage imageNamed:@"origami_panel010024.png"],
                 [UIImage imageNamed:@"origami_panel010025.png"],
                 [UIImage imageNamed:@"origami_panel010026.png"],
                 [UIImage imageNamed:@"origami_panel010027.png"],
                 [UIImage imageNamed:@"origami_panel010028.png"],
                 [UIImage imageNamed:@"origami_panel010029.png"],
                 [UIImage imageNamed:@"origami_panel010030.png"],
                 [UIImage imageNamed:@"origami_panel010031.png"],
                 [UIImage imageNamed:@"origami_panel010032.png"],
                 [UIImage imageNamed:@"origami_panel010033.png"],
                 [UIImage imageNamed:@"origami_panel010034.png"],
                 [UIImage imageNamed:@"origami_panel010035.png"],
                 [UIImage imageNamed:@"origami_panel010036.png"],
                 [UIImage imageNamed:@"origami_panel010037.png"],
                 [UIImage imageNamed:@"origami_panel010038.png"],
                 [UIImage imageNamed:@"origami_panel010039.png"],
                 [UIImage imageNamed:@"origami_panel010040.png"],
                 [UIImage imageNamed:@"origami_panel010041.png"],
                 [UIImage imageNamed:@"origami_panel010042.png"],
                 [UIImage imageNamed:@"origami_panel010043.png"],
                 [UIImage imageNamed:@"origami_panel010044.png"],
                 [UIImage imageNamed:@"origami_panel010045.png"],
                 [UIImage imageNamed:@"origami_panel010046.png"],
                 [UIImage imageNamed:@"origami_panel010047.png"],
                 [UIImage imageNamed:@"origami_panel010048.png"],
                 [UIImage imageNamed:@"origami_panel010049.png"],
                 [UIImage imageNamed:@"origami_panel010050.png"],
                 [UIImage imageNamed:@"origami_panel010051.png"],
                 [UIImage imageNamed:@"origami_panel010052.png"],
                 [UIImage imageNamed:@"origami_panel010053.png"],
                 [UIImage imageNamed:@"origami_panel010054.png"],
                 [UIImage imageNamed:@"origami_panel010055.png"],
                 [UIImage imageNamed:@"origami_panel010056.png"],
                 [UIImage imageNamed:@"origami_panel010057.png"],
                 [UIImage imageNamed:@"origami_panel010058.png"],
                 [UIImage imageNamed:@"origami_panel010059.png"],
                 [UIImage imageNamed:@"origami_panel010060.png"],
                 [UIImage imageNamed:@"origami_panel010061.png"],
                 [UIImage imageNamed:@"origami_panel010062.png"],
                 [UIImage imageNamed:@"origami_panel010063.png"],
                 [UIImage imageNamed:@"origami_panel010064.png"],
                 [UIImage imageNamed:@"origami_panel010065.png"],
                 nil];
    panel1Image.animationImages = panel1Frames;
    panel1Image.animationDuration = 3.0;
    panel1Image.animationRepeatCount = 1;

这将加载当一个UIButton被按下，是否仍然有加载前的图像吗？

此外，是否有办法使它只有一个动画可以一次播放？这会减少内存使用量吗？

谢谢!

Answer 1

您的问题是ios延迟图像的实际加载，直到它们需要呈现。与您所拥有的不同，创建一个名称数组，迭代这些名称，像现在一样创建一个图像，请求它的CGImage，然后使用它创建另一个您保存在可变数组中的uiimage。如果这个方法适用于您添加一个注释，那么就有一个带有比例的微妙之处。

如果你担心内存总量的问题，你可以把uiimages放到NSCache中。

如果您只想有一个动画播放，然后设置为关闭其他按钮，而一个正在播放。

编辑:如果你真的不能克服记忆的冲击，创建一个演示项目，每个按钮按一个动画，并将它张贴到一个公共网站，然后更新你的原始问题与一个项目的参考。