我正在使用 Xcode 5.1.1
在 images.xassets 中，我正在尝试上传我的启动图像。这是 iPhone 肖像 iOS 7 2x 的 640x960 启动图像，我收到一条错误消息，指出“需要适用于 IOS7 及更高版本的 iPhone Retina（4 英寸）启动图像”。问题是我创建了一个名为 LaunchImage-1 的新启动图像，并在同一个 iPhone 肖像 iOS 7 2x 中上传了我的 640x960 启动图像，但它没有给我这个错误。实际上，我只是在常规 LaunchImage 文件夹中有一个该大小的图像，只是我决定更改启动图像，现在我收到此错误。我不知道为什么我会突然出现这个错误。另外，当我输入 640x960 图像（如所需尺寸所述）时，我打开模拟器，我的 4 英寸模拟器会上传一个顶部和底部黑色的 3.5 英寸屏幕。
我当前的部署目标是 7.1。为什么我会收到此错误？
我从项目中删除了对GoogleMobileAdsSDKiOS-7.1的所有引用,并添加了7.4.1.当我在模拟器上运行应用程序时一切正常但在设备上运行时我得到App Mach-O链接器错误.
duplicate symbol l017 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS- 7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADAdNetworkJavaScriptAdViewDelegate.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADRewardBasedVideoAd+Mediation.o)
duplicate symbol l018 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADMRAIDPicture.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADRewardBasedVideoAd+Mediation.o)
duplicate symbol l016 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADBannerAdViewDelegate.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADAdAppViewController.o)
duplicate symbol l021 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADLocation.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADNativeAdAttribution.o)
duplicate symbol l016 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADBannerAdViewDelegate.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADNativeAdImage.o)
duplicate symbol l005 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADMWebViewRenderedChecker.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADAdViewRenderedChecker.o)
duplicate symbol l006 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADMWebViewRenderedChecker.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADAdViewRenderedChecker.o)
duplicate symbol l012 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADPinger.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADCSIReporter.o)
duplicate symbol l016 in:
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADBannerAdViewDelegate.o)
/Users/ib/Desktop/Monster GoogleAds7.4.1/GoogleMobileAdsSdkiOS-7.4.1/GoogleMobileAds.framework/GoogleMobileAds(GADAdNetworkJavaScriptAdViewDelegate.o)
duplicate symbol l021 in:
/Users/ib/Desktop/Monster …