如何以编程方式检查并打开iOS 8中的现有应用程序？ [英] How to Programmatically check and open an existing app in iOS 8?

问题描述

我想检查我的iphone中是否有应用程序。如果它存在，我想启动它，否则打​​开应用程序的App Store链接。

I want to check whether an app is present in my iphone or not. If it is present I want to launch it else open the App Store link of the app.

请建议执行此操作所需的参数以及实现方法。

Please suggest the required parameters to do so and way to implement it.

我有App Store链接打开应用程序，但我需要检查手机中是否已有应用程序。

I have the App Store link to open the app but I need to check if app is already present in the phone.

推荐答案

试试此代码

swift 2.2

swift 2.2

 @IBAction func openInstaApp(sender: AnyObject) {
    var instagramHooks = "instagram://user?username=your_username"
    var instagramUrl = NSURL(string: instagramHooks)
    if UIApplication.sharedApplication().canOpenURL(instagramUrl!)
    {
        UIApplication.sharedApplication().openURL(instagramUrl!)

    } else {
        //redirect to safari because the user doesn't have Instagram
        println("App not installed")
        UIApplication.sharedApplication().openURL(NSURL(string: "https://itunes.apple.com/in/app/instagram/id389801252?m")!)

    }

}

swift 3

 @IBAction func openInstaApp(sender: AnyObject) {
    let instagramHooks = "instagram://user?username=your_username"
    let instagramUrl = URL(string: instagramHooks)
    if UIApplication.shared.canOpenURL(instagramUrl! as URL)
    {
        UIApplication.shared.open(instagramUrl!)

    } else {
        //redirect to safari because the user doesn't have Instagram
        print("App not installed")
        UIApplication.shared.open(URL(string: "https://itunes.apple.com/in/app/instagram/id389801252?m")!)
    }

}

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