iOS 使用已添加的AppIcon和LaunchImage

目前，项目使用Assert.xcassets管理AppIcon和LaunchImage。一旦设置以后，这个图片就会被拷贝一份到应用程序中，存放在一个单独的文件夹内。因此，应用中其他的地方如Resource不需要再存储这些图片，最好不要先复制到工程中，再设置，建议直接从外面的文件夹设置。

这些图片有点特殊，被单独存放以后，我们想要使用的话如何去获取呢？

打印一下

NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
NSLog(@"%@", infoDictionary);

输出结果

{
    BuildMachineOSBuild = 15G1004;
    CFBundleDevelopmentRegion = "zh_CN";
    CFBundleExecutable = CTQProject;
    CFBundleIcons =     {
        CFBundlePrimaryIcon =         {
            CFBundleIconFiles =             (
                AppIcon29x29,
                AppIcon40x40,
                AppIcon60x60
            );
        };
    };
    CFBundleIdentifier = "com.chuangtoubang.ctb";
    CFBundleInfoDictionaryVersion = "6.0";
    CFBundleName = "\U732b\U6295\U9e70";
    CFBundleNumericVersion = 620789760;
    CFBundlePackageType = APPL;
    CFBundleShortVersionString = "1.0.7";
    CFBundleSignature = "????";
    CFBundleSupportedPlatforms =     (
        iPhoneSimulator
    );
    CFBundleURLTypes =     (
                {
            CFBundleTypeRole = Editor;
            CFBundleURLName = weixinPay;
            CFBundleURLSchemes =             (
                wxb14d804bd2c92f26
            );
        },
                {
            CFBundleTypeRole = Editor;
            CFBundleURLName = alipay;
            CFBundleURLSchemes =             (
                chuangtoubang
            );
        }
    );
    CFBundleVersion = 25;
    DTCompiler = "com.apple.compilers.llvm.clang.1_0";
    DTPlatformBuild = "";
    DTPlatformName = iphonesimulator;
    DTPlatformVersion = "10.0";
    DTSDKBuild = 14A345;
    DTSDKName = "iphonesimulator10.0";
    DTXcode = 0800;
    DTXcodeBuild = 8A218a;
    LSApplicationQueriesSchemes =     (
        weixin,
        wechat
    );
    LSRequiresIPhoneOS = 1;
    MinimumOSVersion = "7.0";
    NSAppTransportSecurity =     {
        NSAllowsArbitraryLoads = 1;
    };
    NSCameraUsageDescription = "\U732b\U6295\U9e70\U9700\U8981\U8c03\U7528\U60a8\U7684\U624b\U673a\U76f8\U673a\Uff0c\U53ef\U4ee5\U5417\Uff1f";
    NSLocationWhenInUseUsageDescription = "\U732b\U6295\U9e70\U9700\U8981\U4f7f\U7528\U5b9a\U4f4d\U670d\U52a1\U6765\U641c\U7d22\U9879\U76ee\U548c\U6295\U8d44\U4eba";
    NSMicrophoneUsageDescription = "\U732b\U6295\U9e70\U9700\U8981\U4f7f\U7528\U60a8\U7684\U9ea6\U514b\U98ce\Uff0c\U53ef\U4ee5\U5417\Uff1f";
    NSPhotoLibraryUsageDescription = "\U732b\U6295\U9e70\U9700\U8981\U8bbf\U95ee\U60a8\U7684\U624b\U673a\U76f8\U518c\Uff0c\U53ef\U4ee5\U5417\Uff1f";
    UIDeviceFamily =     (
        1
    );
    UILaunchImages =     (
                {
            UILaunchImageMinimumOSVersion = "8.0";
            UILaunchImageName = "LaunchImage-800-Portrait-736h";
            UILaunchImageOrientation = Portrait;
            UILaunchImageSize = "{414, 736}";
        },
                {
            UILaunchImageMinimumOSVersion = "8.0";
            UILaunchImageName = "LaunchImage-800-667h";
            UILaunchImageOrientation = Portrait;
            UILaunchImageSize = "{375, 667}";
        },
                {
            UILaunchImageMinimumOSVersion = "7.0";
            UILaunchImageName = "LaunchImage-700";
            UILaunchImageOrientation = Portrait;
            UILaunchImageSize = "{320, 480}";
        },
                {
            UILaunchImageMinimumOSVersion = "7.0";
            UILaunchImageName = "LaunchImage-700-568h";
            UILaunchImageOrientation = Portrait;
            UILaunchImageSize = "{320, 568}";
        }
    );
    UIRequiredDeviceCapabilities =     (
        armv7
    );
    UIStatusBarHidden = 0;
    UISupportedInterfaceOrientations =     (
        UIInterfaceOrientationPortrait
    );
    UIViewControllerBasedStatusBarAppearance = 1;
}

其中

 CFBundleIcons =     {
     CFBundlePrimaryIcon =         {
        CFBundleIconFiles =             (
            AppIcon29x29,
            AppIcon40x40,
            AppIcon60x60
        );
    };
};
...

UILaunchImages =     (
            {
        UILaunchImageMinimumOSVersion = "8.0";
        UILaunchImageName = "LaunchImage-800-Portrait-736h";
        UILaunchImageOrientation = Portrait;
        UILaunchImageSize = "{414, 736}";
    },
            {
        UILaunchImageMinimumOSVersion = "8.0";
        UILaunchImageName = "LaunchImage-800-667h";
        UILaunchImageOrientation = Portrait;
        UILaunchImageSize = "{375, 667}";
    },
            {
        UILaunchImageMinimumOSVersion = "7.0";
        UILaunchImageName = "LaunchImage-700";
        UILaunchImageOrientation = Portrait;
        UILaunchImageSize = "{320, 480}";
    },
            {
        UILaunchImageMinimumOSVersion = "7.0";
        UILaunchImageName = "LaunchImage-700-568h";
        UILaunchImageOrientation = Portrait;
        UILaunchImageSize = "{320, 568}";
    }
);

记录的就有图片的名称，可以通过imageNamed直接调用。

具体代码可以参考：https://www.ianisme.com/ios/1825.html