//获取系统info.plist文件中的信息
NSDictionary *info = [[NSBundle mainBundle] infoDictionary];
//获取软件的版本号
NSString *nowversion = [infoDict objectForKey:@"CFBundleVersion"];
NSLog(@"当前版本号是=%@",nowversion);
for (id key in info) {
NSLog(@"key:%@,value:%@",key,[info objectForKey:key]);
//打印所有信息
}