问题描述
我在iPad上运行项目时添加图像时出现以下错误。
它在所有图像的模拟器上运行良好但在iPad上运行但没有显示图像。
I am getting following error while adding images the running the project on iPad.It worked fine on simulator with all images but on iPad its running but showing no images.
CopyPNGFile /Users/user/Library/Developer/Xcode/DerivedData/RImageGallery-cmwaittvclhwgxfpcoarddipyliv/Build/Products/Debug-iphoneos/RImageGallery.app/Default.png PhotoBrowserDemo/Default.png
cd /Users/user/Desktop/Demo
setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/copypng -compress "" /Users/user/Desktop/Demo/PhotoBrowserDemo/Default.png /Users/user/Library/Developer/Xcode/DerivedData/RImageGallery-cmwaittvclhwgxfpcoarddipyliv/Build/Products/Debug-iphoneos/RImageGallery.app/Default.png
Not a PNG filCommand /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/copypng emitted errors but did not return a nonzero exit code to indicate failure
(null): While reading /Users/user/Desktop/Demo/PhotoBrowserDemo/Default.png pngcrush caught libpng error:
(null): Could not find file: /Users/user/Library/Developer/Xcode/DerivedData/RImageGallery-cmwaittvclhwgxfpcoarddipyliv/Build/Products/Debug-iphoneos/RImageGallery.app/Default.png
Command /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/copypng emitted errors but did not return a nonzero exit code to indicate failure
推荐答案
案例1：格式差异
当我更改图像时，它有效从jpg到png，使用预览。以前它可能不起作用，因为.png作为名称而不是格式。
这有帮助。
It worked when i changed the images from jpg to png, using Preview. Previously It might not be working due to .png as name only not as format.This link helped.
还可以在单步使用终端中将多个图像转换为文件夹中的png。
使用cd goto包含图像的文件夹（JPG或任何类型）。
run代码：
Also to convert the multiple images to png in a folder in single step use terminal.Using cd goto the folder containing the images (JPGs or any type).run Code:
mkdir pngs; sips -s format png *.* --out pngs
它会将你的图像转换为.png和将创建一个pngs文件夹，其中包含已转换的图像。
It will convert your images to .png and will create a pngs folder contain the converted images.
案例2：两个同名的图像或一个图像添加两次：
作为Rajneesh071& Himanshu建议：可以为同一图像添加两个或多个具有相同名称的图像或两个目标。
转到项目目标 - >构建阶段 - >复制捆绑资源并搜索您的图像文件名。并删除重复的文件。
As Rajneesh071 & Himanshu suggested: There can be two or more images with same name or two targets were added for same image.Goto project target ->Build Phases -> Copy Bundle Resources and search for your image file name. and remove the repeated file.
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