Open android game from url with parameters

Development Platform & Builds Mobile
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1

Hi,

I want to make my android game open with a custom link like this:

http://www.example.com/open?custom_param1=val1

and retrieve the information of the custom_param1 and use it on my game. I tried to search info and I got the following setup:

on my game.Build.cs I added this:

string PluginPath = Utils.MakePathRelativeTo(ModuleDirectory, Target.RelativeEnginePath);
            AdditionalPropertiesForReceipt.Add(new ReceiptProperty("AndroidPlugin", System.IO.Path.Combine(PluginPath, "custom_APL.xml")));

then, the custom_APL.xml is the following:

<?xml version="1.0" encoding="utf-8"?>
<root xmlns:android="http://schemas.android.com/apk/res/android">
  <!-- init section is always evaluated once per architecture -->
  <init>
    <log text="test"/>
  </init>

  <!-- optional updates applied to AndroidManifest.xml -->
  <androidManifestUpdates>
    <!-- update the GameActivity activity -->
    <loopElements tag="activity">
      <setStringFromAttribute result="activityName" tag="$" name="android:name"/>
      <setBoolIsEqual result="bGameActivity" arg1="$S(activityName)" arg2="com.epicgames.ue4.GameActivity"/>    
      <if condition="bGameActivity">
        <true>
          <!-- Add App Tiles to manifest file. -->
          <addElements tag="$">
            <intent-filter>
              <category android:name="android.intent.category.DEFAULT" />
              <category android:name="android.intent.category.BROWSABLE" />
              <data android:scheme="http" android:host="www.example.com" />
            </intent-filter>
          </addElements>
        </true>
      </if>
    </loopElements>
  </androidManifestUpdates>
  <gameActivityOnCreateAdditions>
    <insert>
      Uri data = this.getIntent().getData();
      if (data != null){ 
        if(data.isHierarchical(){ 
          if(activity != null) {
            if (data.getQueryParameter("custom_param1") != null) {
              String param1 = data.getQueryParameter("custom_param1");
              Log.debug("now what??.");
            }
          }
        }
      }
    </insert>
  </gameActivityOnCreateAdditions>
</root>

I can see that the manifest of my game is getting the intent-filter additions, and when I start the game, I can see the debug line “now what??.” but I have no clue on what to do next. I don’t know how to access the custom_param1 from c++, and also, my game isn’t launching when I click on “http://www.example.com/open?custom_param1=val1” hyperlink

Can someone give me some hint or idea to follow? I’m really confused by this.

Thank you,
David.

2

You found any solution, how get parametr?

3

You need to create a trigger function using JNI which can bridge between c++ and java, and when you receive the data from url, you can trigger that function to get data on the android side.

4

Hey, for solving the issue of that the game is still not open for you.
You need to add this line

<action android:name="android.intent.action.VIEW" />

in the intent filter and add the (autoVerify= “true”) to the Intent-filter
so it would be like this

<intent-filter android:autoVerify= "true">
              <action android:name="android.intent.action.VIEW" />
              <category android:name="android.intent.category.DEFAULT" />
              <category android:name="android.intent.category.BROWSABLE" />
              <data android:scheme="http" android:host="www.example.com" />
</intent-filter>

second you need to get in your devices Settings->Apps->Default Apps->Opening Links->Your App->Supported web addresses
and allow those addresses if they are off.

then it should work for you.

I hope that helped.