iOS 5.1和Default.png [英] iOS 5.1 and Default.png

问题描述

我正在使用iOS 5.1开发一个应用程序，我在default.png文件中遇到了一些奇怪的行为。

I am developing an application using iOS 5.1 and I am experiencing some strange behavior with the default.png files.

我已将以下文件添加到我的应用程序中：

I have added the following files to my application:

Default.png - （iPhone）

Default.png - (iPhone)

[e-mail] - （iPhone Retina）

[e-mail] - (iPhone Retina)

Default-Portrait~ipad.png - （iPad）

Default-Portrait~ipad.png - (iPad)

Default-Portrait @ 2x ~ipad.png - （iPad Retina）

Default-Portrait@2x~ipad.png -(iPad Retina)

当应用程序启动时，它似乎选择了正确的Default.png图像用于每个场合。但是在我的AppDelegate中，我有一个简单的启动画面，可以使应用程序的加载更顺畅，并转换到应用程序，执行以下操作：

When the application starts it seems that it selects the correct Default.png image to use for each occasion. However in my AppDelegate I have a simple splash screen to make smoother the loading of the application and the transition to the app, doing something like:

UIImageView *splashView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,window.frame.size.width, window.frame.size.height)]; 
splashView.image = [UIImage imageNamed:@"Default"]; 

[window addSubview:splashView]; 
[window bringSubviewToFront:splashView]; 

然而 [UIImage imageNamed：@Default] 反过来没有为每个设备选择正确的文件，我认为问题是 -Portrait 部分文件名。

However the [UIImage imageNamed:@"Default"] in turn does not select the correct file for each device, and I believe the problem is the -Portrait part of the filename.

所以作为一个快速解决方案，我做到了这一点：

So as a quick solution I did this:

if( ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) ) {
    // Force the image used by ipads
    if( [[UIScreen mainScreen] respondsToSelector:@selector(scale)] && [[UIScreen mainScreen] scale] == 2.0) {
       splashView.image = [UIImage imageNamed:@"Default-Portrait@2x~ipad"];
    }
    else {
        splashView.image = [UIImage imageNamed:@"Default-Portrait~ipad"];
    }
}
else
   splashView.image = [UIImage imageNamed:@"Default"];

这是我应该这样做的吗？这看起来有趣吗？

Is this how I should be doing this? Does this look funny to you?

推荐答案

有关官方信息，请查看：应用相关资源

For official information here take a look at: App-Related Resources

对于启动图像，请使用以下格式：

For Launch images use this format:

<basename><orientation_modifier><scale_modifier><device_modifier>.png

看起来您最好使用：

Default.png - (iPad)

[e-mail] - (iPad Retina)

Default~iphone.png - (iPhone)

Default@2x~iphone.png -(iPhone Retina)

即使使用简单，这也可以给你正确的图像：

This should give you proper image even if using simply:

splashView.image = [UIImage imageNamed:@"Default"]; 

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