android - 如何启动允许用户从 office lens 中选择 pdf 并接收它的 Activity

Question

1. 我想添加功能，让用户可以通过 startActivityForResult() 方法从 microsoft office lens 中选择 pdf 并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，然后导航到 office lens。我如何将用户直接导航到办公室镜头

   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，想出了这个来解决我的第二个问题

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)

        } 

此函数让您检查应用程序是否已安装

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