1.获取bundleID：
[[NSBundle mainBundle] bundleIdentifier];
2.获取版本号：
[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
3.获取build号：
[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];
4.获取App显示名称：
[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleDisplayName"];
其实[[NSBundle mainBundle] infoDictionary]获得的是一个字典，里面放着info.plist文件中的各种信息，根据不同的键去取即可，如：CFBundleDevelopmentRegion、CFBundleDisplayName、CFBundleExecutable、CFBundleExecutablePath、CFBundleIdentifier、CFBundleInfoDictionaryVersion、CFBundleInfoPlistURL、 CFBundleName、CFBundlePackageType、CFBundleShortVersionString、CFBundleSignature、CFBundleSupportedPlatforms
