Question by Dixcipuli · Jun 19, 2018 at 09:10 AM · android activity

Open the right android activity with arguments

Hi!

In my application, I would like to open another android app (Adobe Reader) to read a pdf file. I have to mention that I developed most of my apps on Unity, and therefore I am not very familiar with the intents and the activities. However, by searching on the internet, I have found those lines of code, which allow me to open correctly the Adobe Reader application.

 public void DocumentDisplay(){
         
     bool fail = false;
     string bundleId = "com.adobe.reader"; // your target bundle id
     AndroidJavaClass up = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
     AndroidJavaObject ca = up.GetStatic<AndroidJavaObject>("currentActivity");
     AndroidJavaObject packageManager = ca.Call<AndroidJavaObject>("getPackageManager");
 
     AndroidJavaObject launchIntent = null;
     try
     {
         launchIntent = packageManager.Call<AndroidJavaObject>("getLaunchIntentForPackage",bundleId);
     }
     catch (System.Exception e)
     {
         fail = true;
     }
 
     if (fail)
     { //open app in store
         Application.OpenURL("https://google.com");
     }
     else //open the app
         ca.Call("startActivity",launchIntent);
 
     up.Dispose();
     ca.Dispose();
     packageManager.Dispose();
     launchIntent.Dispose();
 
     }

What I would like to do now is to open directly the right file, instead of opening the main "start" activity of adobe Reader. First I don't know which activity of the Adobe Reader app corresponds to the one which reads the file. I downloaded the apk file of the app, and analyzed it in Android studio, to access to the manisfest file, but it didn't help me to find a solution. I don't really understand how I am supposed to call the right function with the right argument without knowing how the applications is coded.

So could you help me and show me the way to do such a thing?

Thanks!

Antoine

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