[Paweł]

Hi,
I’ve got problem with the AdMob plugin. When I call the showInterstitialIfLoaded method, the NullPointerException crashes my app:

E/AndroidRuntime(18094): java.lang.NullPointerException
E/AndroidRuntime(18094): at net.vplay.plugins.admob.AdMobInterstitialItem$3.run(AdMobInterstitialItem.java:85)
...

 

This can be reproduced within the following project:

import Felgo 3.0
import QtQuick 2.0

import Felgo 3.0

GameWindow {
    id: gameWindow

    licenseKey: "xxx"

    activeScene: scene

    screenWidth: 640
    screenHeight: 960

    Scene {
        id: scene

        width: 320
        height: 480

        ButtonVPlay {
            text: qsTr("Show ad");

            onClicked: adMobInterstitial.showInterstitialIfLoaded();
        }


    }

    AdMobInterstitial {
        id: adMobInterstitial

        adUnitId: "ca-app-pub-xxxx/xx"

        onInterstitialReceived: {
            console.debug("[AdMob] Video cached");
        }

        onInterstitialFailedToReceive: {
            console.debug("[AdMob] Video failed to load");
        }

        Component.onCompleted: {
            console.debug("[AdMob] Caching video");
            loadInterstitial();
        }

        function showVideo() {
            if(platformSupported && platformLoaded) {
               showInterstitialIfLoaded();
            } else {
                console.debug("[AdMob] Not supported :(");
            }
        }
    }
}

 

The build.gradle file:

buildscript {
    repositories {
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:1.1.0'
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url 'https://sdk.felgo.com/maven/' }
    }
}

apply plugin: 'com.android.application'

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])

    compile 'net.vplay.plugins:plugin-admob:2.+'
}

android {
    /*******************************************************
     * The following variables:
     * - androidBuildToolsVersion,
     * - androidCompileSdkVersion
     * - qt5AndroidDir - holds the path to qt android files
     *                   needed to build any Qt application
     *                   on Android.
     *
     * are defined in gradle.properties file. This file is
     * updated by QtCreator and androiddeployqt tools.
     * Changing them manually might break the compilation!
     *******************************************************/

    compileSdkVersion androidCompileSdkVersion.toInteger()

    buildToolsVersion androidBuildToolsVersion

    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = [qt5AndroidDir + '/src', 'src', 'java']
            aidl.srcDirs = [qt5AndroidDir + '/src', 'src', 'aidl']
            res.srcDirs = [qt5AndroidDir + '/res', 'res']
            resources.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            assets.srcDirs = ['assets']
            jniLibs.srcDirs = ['libs']
       }
    }

    lintOptions {
        abortOnError false
    }
}

 

AndroidManifest:

<application ... android:name="net.vplay.helper.VPlayApplication"

<activity ... android:name="net.vplay.helper.VPlayActivity"

with default permissions. I’ve tried also with custom permissions:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

[GüntherFelgo Team]

Hi Pawel!

I investigated the issue and noticed that the problem lies with the loadInterstitial call.
It seems that at the time the onCompleted handler runs the method, the plugin is not activated yet by our component that validates the plugin license. (so the item is actually not completed/usable). This results in an exception when calling showInterstitialIfLoaded.

The plugin works if you load the interstitial at a later time (e.g. when you press the button):

Scene {
    id: scene
    width: 320
    height: 480

    ButtonVPlay {
      text: qsTr("Load and show ad");
      onClicked: adMobInterstitial.loadInterstitial();

    }
  }

  AdMobInterstitial {
    id: adMobInterstitial

    adUnitId: "ca-app-pub-9155324456588158/9075427220"

    onInterstitialReceived: {
      console.debug("[AdMob] Video cached");
      // play interstitial after it was received
      adMobInterstitial.showInterstitialIfLoaded()
    }

    onInterstitialFailedToReceive: {
      console.debug("[AdMob] Video failed to load");
    }

    function showVideo() {
      if(platformSupported && platformLoaded) {
        showInterstitialIfLoaded();
      } else {
        console.debug("[AdMob] Not supported :(");
      }
    }
  }

 

I added this issue to our bug-tracking system, we will try to fix it for one of next updates.

 

Best,
Günther

[Paweł]

Hi Günther,
it’s ok. I will load the interstitial when the result scene is opened (5 – 10 sec) after launch. Thanks for help 🙂

Best regards,
Paweł

 

[AlexFelgo Team]

HI Pawel,

There is actually another signal for your use-case, you can use the pluginLoaded signal instead of Component.onCompleted for caching the interstitial.

Best,

Alex