xcode 带有 xcassets 的 iPhone 4" 屏幕无法拉出正确的图像
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iPhone 4" screen with xcassets not pulling correct image
提问by Joel Bell
I am trying to implement using Images.xcassets into a project I am working on. From what I understand I can just put all the different sized images for different devices in there and then call [UIImage imageNamed:@"name_of_image_set"] and it will return the correct image for the device I am working on.
我正在尝试将 Images.xcassets 用于我正在处理的项目中。据我所知，我可以将不同设备的所有不同大小的图像放在那里，然后调用 [UIImage imageNamed:@"name_of_image_set"] 它将为我正在处理的设备返回正确的图像。
It seems to be pulling the correct image for everything except the iPhone 5/5s/5c with the 4" screen. For that screen size it gives me the image for the @2x iPhone with the 3.5" screen.
除了带有 4" 屏幕的 iPhone 5/5s/5c 之外，它似乎正在为所有内容提取正确的图像。对于该屏幕尺寸，它为我提供了带有 3.5" 屏幕的 @2x iPhone 的图像。
Here is the json that is included in the folder with the images.
这是包含在带有图像的文件夹中的 json。
{
"images" : [
{
"idiom" : "iphone",
"scale" : "1x",
"filename" : "bg.png"
},
{
"idiom" : "iphone",
"scale" : "2x",
"filename" : "[email protected]"
},
{
"idiom" : "iphone",
"filename" : "[email protected]",
"subtype" : "retina4",
"scale" : "2x"
},
{
"idiom" : "ipad",
"scale" : "1x",
"filename" : "bg~ipad.png"
},
{
"idiom" : "ipad",
"scale" : "2x",
"filename" : "bg@2x~ipad.png"
}
],
"info" : {
"version" : 1,
"author" : "xcode"
}
}
Everything seems to be in order, am I just misunderstanding how xcassets are supposed to work?
一切似乎都井井有条，我只是误解了 xcassets 应该如何工作吗？
Thanks
谢谢
Joel Bell
乔尔·贝尔
采纳答案by ale0xB
I came across this problem and the issue seems to be targeting iOS versions lower than 7.0 The solution for me was to create a separate image set with a single @2x image on it and instantiate the correct one programmatically by detecting the iPhone screen size in code like done here
我遇到了这个问题，问题似乎是针对低于 7.0 的 iOS 版本对我来说，解决方案是创建一个单独的图像集，上面有一个 @2x 图像，并通过在代码中检测 iPhone 屏幕大小以编程方式实例化正确的图像喜欢在这里完成
回答by Charles
I had the same issue but only in ios7 and I load the images programmatically, but it should be the same problem.
我有同样的问题，但只在 ios7 中，我以编程方式加载图像，但应该是同样的问题。
In my viewDidLoad I added:
在我的 viewDidLoad 中，我添加了：
if ([self respondsToSelector:@selector(setEdgesForExtendedLayout:)]) { // if iOS 7
self.edgesForExtendedLayout = UIRectEdgeNone; //layout adjustements
}
It basically just recognizes iOS7 and applies some layout adjustements. After I added this code, the correct picture got selected. Finally I load my image, which you don't have to do:
它基本上只识别 iOS7 并应用一些布局调整。添加此代码后，选择了正确的图片。最后我加载我的图像，你不必这样做：
[productview setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"background.png"]]];
Found this answer also here in stackoverflow, but didn't find it anymore.
在stackoverflow中也在这里找到了这个答案，但再也找不到了。
