在代码中插入一段查询网址即可获取app信息以及版本信息。
查询命令：http://itunes.apple.com/lookup?id=xxxxxxxxx（9位appid数字）
获取设备上所有app (为LSApplicationProxy 对象)
Class LSApplicationWorkspace_class = objc_getClass("LSApplicationWorkspace");
NSObject *workspace = [LSApplicationWorkspace_class performSelector:@selector(defaultWorkspace)];
NSArray *apps = [workspace performSelector:@selector(allInstalledApplications)];
NSLog(@"apps: %@", apps);
获取版本信息
[apps[0] performSelector:NSSelectorFromString(@"shortVersionString")]
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