适配Iphone5时在模拟器里测试一切正常但在真机上却还是留有黑框

今天说是把适配好iphone5的程序在真机上跑一下，不跑不知道，一跑吓一跳，本来在模拟器里测的好好的，在iphone5真机上一跑却还是留有黑框，弄好大一会，终于知道问题出在什么地方了：原来是美工在用photoshop做首页启动图 Default-568h@2x.png 的时候 ，图片有一个属性 interlaced  ，做好后应该是 no interlaced 这个才行，把图再给美工让她把这个属性值改一下就OK了！！！

下面附上搜到的资料吧，要是看到的朋友希望对你们有所帮助：

转载自：http://blog.youkuaiyun.com/niitlcj/article/details/7891931

神奇的錯誤：pngcrush caught libpng error: Not enough image data

因為 XCode 4 編譯時對圖片所做的檢查比以前還嚴格，所以原本沒有的錯誤就突然這樣冒出來了，第一次看到還真的是一頭霧水，解決方式也是非常神奇，只要用 Photoshop 打開有問題的圖檔，並且在儲存的時候選擇非交錯模式（Not interlaced）即可。

转载自：http://stackoverflow.com/questions/5287600/build-app-with-xcode-4-it-always-show-some-error-about-png-image

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When I build my app with Xcode 4 it always show this error message: CopyPNGFile /Users/michaelchen/Library/Developer/Xcode/DerivedData/iMusicBox-boeawugacmhacbdtyymnprzfobyq/ArchiveIntermediates/iMusicBox/InstallationBuildProductsLocation/Applications/iMusicBox.app/list_cell.png Images/list_cell.png cd /Volumes/WORK/Works/iMusicBox setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" "/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/PrivatePlugIns/iPhoneOS Build System Support.xcplugin/Contents/Resources/copypng" -compress "" /Volumes/WORK/Works/iMusicBox/Images/list_cell.png /Users/michaelchen/Library/Developer/Xcode/DerivedData/iMusicBox-boeawugacmhacbdtyymnprzfobyq/ArchiveIntermediates/iMusicBox/InstallationBuildProductsLocation/Applications/iMusicBox.app/list_cell.png While checking alphas in /Volumes/WORK/Works/iMusicBox/Images/list_cell.png pngcrush caught libpng error: Not enough image data but It's OK with Xcode 3.2 - why? xcode  xcode4 share | improve this question edited  Mar 13 '11 at 10:31 Paul R 72.4k 6 66 142 asked  Mar 13 '11 at 5:14 Michael Chen 283 1 3 5

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Found it!! You have to save your PNG files as NOT INTERLACED. Try to open the file in photoshop (or similar), save as, and select "Not interlaced". It is working in my case hope this helps