如何开始一项活动，允许用户从办公镜头中拾取pdf并接收它

Question

1. 我想为用户添加功能以从Microsoft Office Lens中选择pdf，并通过startActivityForResult()方法的帮助将其发送到我的应用程序。可能吗？

2. 以下代码允许用户从我的应用程序导航到Playstore，然后从Office Lens导航。我如何直接将用户导航到Office Lens

   val intent = Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=com.microsoft.office.officelens"))
   intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
   startActivityForResult(intent, IMAGE_PICK_CODE)
   

Answer 1

好吧，我发现评论很有用，并提出了解决我的第二个问题的方法

val isAppInstalled = appInstalledOrNot("com.microsoft.office.officelens")
        if (isAppInstalled)
        {
            //This intent will help you to launch if the package is already installed
            Toast.makeText(this@ScrollingActivity, "Its toast at if!", Toast.LENGTH_SHORT).show()
            val LaunchIntent = getPackageManager().getLaunchIntentForPackage("com.microsoft.office.officelens")
    startActivityForResult(LaunchIntent, IMAGE_PICK_CODE)
        }
        else
        {
            Toast.makeText(this@ScrollingActivity, "else executed!", Toast.LENGTH_SHORT).show()
            val intent = Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=com.microsoft.office.officelens"))
            intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
            startActivityForResult(intent, IMAGE_PICK_CODE)

        } 

此功能使您可以检查是否已安装该应用程序

 private fun appInstalledOrNot(uri:String):Boolean {
        val pm = getPackageManager()
        try
        {
            pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES)
            return true
        }
        catch (e:PackageManager.NameNotFoundException) {}
        return false
    }