Swift 判断是否安装某APP

首先要在项目的info.plist里面添加，你要判断的APP里面添加URL Schemes!

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//是否安装APP
    func isInstallation(urlString:String?) -> Bool {
        let url = URL(string: urlString!)
        if url == nil {
            return false
        }
        if UIApplication.shared.canOpenURL(url!) {
            return true
        }
        return false
    }

转载于:https://www.jianshu.com/p/52dec7333a96