iOS 获取版本信息的小部分问题

iOS 获取版本信息之类的问题，整理一小部分

1：获取bundle Id信息：[[NSBundle mainBundle]bundleIdentifier]；

2: 获取App显示名：[[[NSBundle mainBundle]infoDictionary] objectForKey:@"CFBundleDisplayName"];

3：获取版本号：[[[NSBundle mainBundle]infoDictionary] objectForKey:@"CFBundleVersion"];

[[NSBundle mainBundle]infoDictionary] 获得的是一个字典，里边放着Info.plist文件中的各种信息，根据不同的键去即可，如：

CFBundleDevelopmentRegion

CFBundleDisplayName

CFBundleExecutable

CFBundleExecutablePath

CFBundleIdentifier

CFBundleInfoDictionaryVersion = "6.0";

CFBundleInfoPlistURL

CFBundleName

CFBundlePackageType

CFBundleShortVersionString

CFBundleSignature

CFBundleSupportedPlatforms