1.获取app的info.plist详细信息
版本号：Bundle version
 NSString *version = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];
应用标识：Bundle identifier
NSString *bundleId = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleIdentifier"];
应用名称：Bundle display name
NSString *appName = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleDisplayName"];
Bundle name
NSString *appName = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleName"];
 
2.应用程序语言本地化
app本地化宏
#define XLocalizedString(key, comment)        [[NSBundle mainBundle] localizedStringForKey:(key) value:@"" table:nil]
中英文两个Localizable.strings文件中键值对，例如
"none" = "确定";
"none" = "none";
宏的用法：(返回NSString *)
localizedString("none", "这是注释")
 
3.获取包内文件路径和文件
获取app包路径
NSString *path = [[NSBundle mainBundle] bundlePath];
app资源目录路径
NSString *resPath = [[NSBundle mainBundle] resourcePath];
 
获取资源目录下a.bundle
NSString* path = [resPath stringByAppendingPathComponent:@"a.bundle"];
NSBundle *bundle = [NSBundle bundleWithPath:path];
 
获取app包的readme.txt文件路径
NSString *path = [[NSBundle mainBundle] pathForResource:@"readme" ofType:@"txt"];

app info.plist