Loading of Admob Native ads failed to load with error code 0

Question

I've faced with some kind of an issue.

I tried to integrate the Admob Native ads (recently added to Google Play Services as I realized) using

manual

https://developers.google.com/admob/android/native

quick start

https://developers.google.com/admob/android/quick-start.

It was OK for a simple banner loaded by AdView but I really stuck when I changed to loading native ads by AdLoader.

I'm using Idea + Gradle and Android Annotations.

Here is the Logcat (updated, kindly see to the end of the question):

07-13 17:12:32.260    2548-2580/com.clockbyte.vkgroupwatcher D/dalvikvm﹕ DexOpt: --- BEGIN 'ads-1439082442.jar' (bootstrap=0) ---
07-13 17:12:32.350    2548-2548/com.clockbyte.vkgroupwatcher I/Ads﹕ CsiReporterFactory: CSI is not enabled. No CSI reporter created.
07-13 17:12:32.350    2548-2548/com.clockbyte.vkgroupwatcher I/Ads﹕ Starting ad request.
07-13 17:12:32.840    2548-2580/com.clockbyte.vkgroupwatcher D/dalvikvm﹕ DexOpt: --- END 'ads-1439082442.jar' (success) ---
07-13 17:12:32.840    2548-2580/com.clockbyte.vkgroupwatcher D/dalvikvm﹕ DEX prep '/data/data/com.clockbyte.vkgroupwatcher/cache/ads-1439082442.jar': unzip in 0ms, rewrite 580ms
07-13 17:12:35.100    1798-1826/com.google.android.gms I/Ads﹕ CsiReporterFactory: CSI is not enabled. No CSI reporter created.
07-13 17:12:36.360    2548-2548/com.clockbyte.vkgroupwatcher I/dalvikvm﹕ Could not find method android.webkit.WebSettings.setMixedContentMode, referenced from method com.google.android.gms.ads.internal.t.h.<init>
07-13 17:13:36.351    2548-2612/com.clockbyte.vkgroupwatcher W/Ads﹕ Timed out waiting for native ad.
07-13 17:13:36.351    2548-2613/com.clockbyte.vkgroupwatcher W/Ads﹕ Timeout when loading native ad.
    java.util.concurrent.TimeoutException: CallbackFuture timed out.
            at com.google.android.gms.ads.internal.util.a.a.get(SourceFile:108)
            at com.google.android.gms.ads.internal.o.a.a.b(SourceFile:156)
            at com.google.android.gms.ads.internal.o.a.a.call(SourceFile:70)
            at com.google.android.gms.ads.internal.util.n.run(SourceFile:75)
            at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:841)
07-13 17:13:36.351    2548-2548/com.clockbyte.vkgroupwatcher W/Ads﹕ Failed to load ad: 2
07-13 17:13:36.351    2548-2548/com.clockbyte.vkgroupwatcher I/com.clockbyte.vkgroupwatcher.ads.AdmobFetcher﹕ Fetching Ad now
07-13 17:13:36.391    1798-1825/com.google.android.gms I/Ads﹕ CsiReporterFactory: CSI is not enabled. No CSI reporter created.
07-13 17:13:36.741    2548-2548/com.clockbyte.vkgroupwatcher I/chromium﹕ [INFO:CONSOLE(0)] "Document was loaded from Application Cache with manifest http://googleads.g.doubleclick.net/mads/static/mad/sdk/native/sdk-core-v40.appcache", source: http://googleads.g.doubleclick.net/mads/static/mad/sdk/native/native_ads.html (0)
07-13 17:13:36.751    2548-2548/com.clockbyte.vkgroupwatcher I/chromium﹕ [INFO:CONSOLE(0)] "Application Cache Checking event", source: http://googleads.g.doubleclick.net/mads/static/mad/sdk/native/native_ads.html (0)
07-13 17:13:36.861    2548-2548/com.clockbyte.vkgroupwatcher I/chromium﹕ [INFO:CONSOLE(0)] "Application Cache NoUpdate event", source: http://googleads.g.doubleclick.net/mads/static/mad/sdk/native/native_ads.html (0)
07-13 17:13:36.881    2548-2548/com.clockbyte.vkgroupwatcher W/Ads﹕ Failed to load ad: 0

Here is the code for fetching the ad (I call the method prefetchAds from my extended BaseAdapter to publish the loaded ad to the ListView).

package com.clockbyte.vkgroupwatcher.ads;

import android.content.Context;
import android.provider.Settings;
import android.text.TextUtils;
import com.clockbyte.vkgroupwatcher.CbLog;
import com.clockbyte.vkgroupwatcher.Crypt;
import com.clockbyte.vkgroupwatcher.GroupWatcherApplication;
import com.clockbyte.vkgroupwatcher.R;
import com.google.android.gms.ads.AdListener;
import com.google.android.gms.ads.AdLoader;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.formats.NativeAd;
import com.google.android.gms.ads.formats.NativeAdOptions;
import com.google.android.gms.ads.formats.NativeAppInstallAd;
import com.google.android.gms.ads.formats.NativeContentAd;

public class AdmobFetcher {

 private AdLoader adLoader;
 private WeakReference<Context> mContext = new WeakReference<>(null);

...
//I call this method once, just to setup AdLoader and fetch the ad.
 public synchronized void prefetchAds(Context context) {
        mContext = new WeakReference<>(context);
        setupAds();
        fetchAd();
    }

  private synchronized void setupAds() {
        String admobUnitId = "ca-app-pub-3940256099942544/2247696110"; // the test ad unit id that is pointed in the manual
        adLoader = new AdLoader.Builder(mContext.get(), admobUnitId)
                .forAppInstallAd(new NativeAppInstallAd.OnAppInstallAdLoadedListener() {
                    @Override
                    public void onAppInstallAdLoaded(NativeAppInstallAd appInstallAd) {
                        onAdFetched(appInstallAd); // Can't get here
                    }
                })
                .forContentAd(new NativeContentAd.OnContentAdLoadedListener() {
                    @Override
                    public void onContentAdLoaded(NativeContentAd contentAd) {
                        onAdFetched(contentAd); // Can't get here
                    }
                })
                .withAdListener(new AdListener() {
                    @Override
                    public void onAdFailedToLoad(int errorCode) {
                        // Here I got errorCode = 0 each time (kindly check Logcat)
                    }
                })
                .withNativeAdOptions(new NativeAdOptions.Builder()
                        // Methods in the NativeAdOptions.Builder class can be
                        // used here to specify individual options settings.
                        //.setReturnUrlsForImageAssets(true)
                        .build())
                .build();
    }

 /**
     * Fetches a new native ad.
     */
    private synchronized void fetchAd() {
        Context context = mContext.get();
        if (context != null) {
            adLoader.loadAd(getAdRequest()); //Fetching the ads item
        } else {
            mFetchFailCount++;
        }
    }

     /**
     * Setup and get an AdRequest instance
     */
    private synchronized AdRequest getAdRequest() {
        String deviceId = "XXXXXXXXXXXXXXX";
        return new AdRequest.Builder()
                .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)        // All emulators are added by default as test devices
                .addTestDevice(deviceId)
                .build();
    }

...
}

The app's manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.clockbyte.vkgroupwatcher"
    android:versionCode="4"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="22" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="com.android.vending.CHECK_LICENSE" />

    <application
        android:name="GroupWatcherApplication"
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme">

        <!--This meta-data tag is required to use Google Play Services.-->
        <meta-data android:name="com.google.android.gms.version"
                   android:value="@integer/google_play_services_version" />

        <activity
            android:name=".activities.LoginActivity_"
            android:configChanges="keyboardHidden|orientation"
            android:launchMode="standard"
            android:noHistory="false" >
        </activity>
        <activity
            android:name=".activities.MainContainerActivity_"
            android:launchMode="standard" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".activities.PreferencesActivity_"
            android:theme="@style/SettingsTheme" >
        </activity>
        <activity
            android:name=".activities.WatcherEditActivity_"
            android:launchMode="standard" >
        </activity>
        <activity
            android:name=".activities.AddGroupsActivity_"
            android:launchMode="standard" >
        </activity>
        <activity
            android:name=".activities.MessageDetailsActivity_"
            android:launchMode="standard" >
        </activity>
        <!--Include the AdActivity configChanges and theme. -->
        <activity android:name="com.google.android.gms.ads.AdActivity"
                  android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
                  android:theme="@android:style/Theme.Translucent" />

        <service
            android:name=".service.WatcherService_"
            android:enabled="true" />

        <receiver
            android:name="com.clockbyte.vkgroupwatcher.environment.EnvironmentStateReceiver_"
            android:enabled="true" >
            <intent-filter>
                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
                <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
                <action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
                <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

And finally my build.gradle of the module

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.2.2'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.4'
    } }

repositories {
    jcenter()
    mavenCentral()
    mavenLocal() }

apply plugin: 'com.android.application' apply plugin: 'android-apt' def AAVersion = '3.3.1'

apt {
    arguments {
        androidManifestFile variant.outputs[0].processResources.manifestFile
        resourcePackageName 'com.clockbyte.vkgroupwatcher'
    } }

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"
    defaultConfig {
        applicationId "com.clockbyte.vkgroupwatcher"
        minSdkVersion 11
        targetSdkVersion 22
        versionCode 6
        versionName "1.1"
        multiDexEnabled = true
    }

    packagingOptions {
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
    }

}

dependencies {
    apt "org.androidannotations:androidannotations:$AAVersion"
    compile "org.androidannotations:androidannotations-api:$AAVersion"
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.loopj.android:android-async-http:1.4.7'
    compile 'com.google.code.gson:gson:2.3.1'
    compile 'org.jsoup:jsoup:1.8.2'
    compile 'org.ocpsoft.prettytime:prettytime:4.0.0.Final'
    compile 'com.android.support:support-v4:22.2.0'
    compile 'com.android.support:appcompat-v7:22.2.0'
    compile 'com.google.android.gms:play-services-ads:7.5.0'
    compile 'com.google.android.gms:play-services-appinvite:7.5.0'
    compile project(':google-licensing') }

Have I missed something?

Or the Native ads still not supported by Admob?

Also I tried such things as changing my app unit id from test to real one, testing on the emulator/device and clearing the cache data of Google Play Services on the device - the same result.

Any help/ideas will be highly appreciated...

Updated: I've removed multidex mode from gradle's config and changed the buildToolsVersion to the latest one (22.0.1), the logcat is updated to the top of the question. Now the first call of the method fetchAd fails with code 2 (timeout) and the next calls fail with code 0 as earlier. Kindly take a look at the updated Logcat

Updated2: A log for a real device (android api level 15):

07-14 00:23:26.985    7698-7698/com.clockbyte.vkgroupwatcher I/Ads﹕ CsiReporterFactory: CSI is not enabled. No CSI reporter created.
07-14 00:23:27.015    7698-7698/com.clockbyte.vkgroupwatcher I/Ads﹕ Starting ad request.
07-14 00:23:27.225    7698-7823/com.clockbyte.vkgroupwatcher D/dalvikvm﹕ DexOpt: --- BEGIN 'ads833267715.jar' (bootstrap=0) ---
07-14 00:23:27.365    7698-7823/com.clockbyte.vkgroupwatcher D/dalvikvm﹕ DexOpt: --- END 'ads833267715.jar' (success) ---
07-14 00:23:27.365    7698-7823/com.clockbyte.vkgroupwatcher D/dalvikvm﹕ DEX prep '/data/data/com.clockbyte.vkgroupwatcher/cache/ads833267715.jar': unzip in 0ms, rewrite 139ms
07-14 00:23:36.424    7433-7443/? I/Ads﹕ CsiReporterFactory: CSI is not enabled. No CSI reporter created.
07-14 00:23:36.454    7433-7863/? I/Ads﹕ CsiReporterFactory: CSI is not enabled. No CSI reporter created.
07-14 00:23:36.504    7433-7863/? I/dalvikvm﹕ Could not find method android.net.ConnectivityManager.isActiveNetworkMetered, referenced from method com.google.android.gms.ads.internal.request.a.r.a
07-14 00:23:36.584    7433-7433/? I/dalvikvm﹕ Could not find method android.webkit.WebSettings.setMixedContentMode, referenced from method com.google.android.gms.ads.internal.t.h.<init>
07-14 00:23:36.584    7433-7433/? I/dalvikvm﹕ Could not find method android.webkit.WebView.evaluateJavascript, referenced from method com.google.android.gms.ads.internal.t.h.evaluateJavascript
07-14 00:23:36.594    7433-7433/? I/dalvikvm﹕ Could not find method com.google.android.gms.ads.internal.t.h.isAttachedToWindow, referenced from method com.google.android.gms.ads.internal.t.h.onDraw
07-14 00:23:36.594    7433-7433/? W/dalvikvm﹕ VFY: unable to resolve virtual method 6452: Lcom/google/android/gms/ads/internal/t/h;.isAttachedToWindow ()Z
07-14 00:23:36.624    7433-7857/? D/skia﹕ WebFrame::loadStarted (1) https://googleads.g.doubleclick.net/mads/static/mad/sdk/native/sdk-core-v40.html
07-14 00:23:37.295    7433-7857/? D/skia﹕ WebFrame::loadStarted (0) gmsg://mobileads.google.com/loadAdURL?drt_include=1&request_id=d72e3527-8d9a-4f0c-b771-18f9f922403c&request_scenario=online_request&type=admob&url=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma%3Fsession_id%3D157010986198
07-14 00:23:37.295    7433-7433/? W/Ads﹕ JS: The page at about:blank displayed insecure content from gmsg://mobileads.google.com/loadAdURL?drt_include=1&request_id=d72e3527-8d9a-4f0c-b771-18f9f922403c&request_scenario=online_request&type=admob&url=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma%3Fsession_id%3D15701098619806543204%26seq_num%3D1%26rm%3D1%26fdz%3D-1%26adtest%3Don%26js%3Dafma-sdk-a-v7574000.7571000.1%26eid%3D46621077%252C46621098%252C318474371%26hl%3Dru%26submodel%3DHTC%2520Sensation%2520XE%2520with%2520Beats%2520Audio%2520Z715e%26gnt%3D0%26native_templates%3D1%252C2%26ma%3D0%26platform%3DHTC%26forceHttps%3Dtrue%26u_sd%3D1.5%26sp%3D0%26cnt%3D1%26native_version%3D3%26muv%3D15%26riv%3D0%26ms%3DbBaKMM241P7ZUZbIw630exH1iY80ufKc8Z12nKVbEOI4eDpWg2KlW24F0xUKsi7r1FLSD9ISfYeAdN8C_jtjpY6xx5wG5BARDyrZUgeW_qnHTavdTzBzrpSaI1-3y19EgkD3mrsTe5XMetskcd4lTidQnf63xhT8BeE9u1LAJb1pTp_N8TssVCQNtBBRk59fPAK8olxqwKJm-nDWnLngOBSH0F_dXlmb_-ZhxT0VwHw8Hv406I5dXx2jh6YAvc0kd_cJwwBfLhCXEnxqcNCgAhLJWbdnzqf2kYziboXI8BGqqPbVNRNeKqzWB149Ri-q0no25qbKdZIbT0yuMNMkgA%26mv%3D80321300.com.android.vending%26format%3D320x50_mb%26coh%3D1%26gl%3DRU%26request_id%3Dd72e3527-8d9a-4f0c-b771-18f9f922403c%26am%3D0%26native_image_orientation%3Dany%26u_w%3D360%26u_h%3D640%26msid%3Dcom.clockbyte.vkgroupwatcher%26app_name%3D6.android.com.clockbyte.vkgroupwatcher%26an%3D6.android.com.clockbyte.vkgroupwatcher%26net%3Dwi%26u_audio%3D3%26u_so%3Dp%26preqs%3D0%26support_transparent_background%3Dtrue%26pimp%3D0%26currts%3D4989768%26pclick%3D0%26basets%3D4989768%26output%3Dhtml%26region%3Dmobile_app%26u_tz%3D180%26client_sdk%3D1%26ex%3D1%26client%3Dca-app-pub-3940256099942544%26slotname%3D6300978111%26gsb%3Dwi%26bisch%3Dtrue%26blev%3D0.55%26cans%3D-1%26canm%3Dfalse%26caps%3DinlineVideo_interactiveVideo_mraid1_mraid2_th_autoplay_mediation_transparentBackground_sdkAdmobApiForAds_di%26_efs%3Dfalse%26blockAutoClicks%3D0%26forceGmsDoritos%3D1%26tcar%3D46%26jsv%3D176%26urll%3D1435&base_uri=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma&use_webview_loadurl=0&enable_auto_click_protection=0&google.afma.Notify_dt=1436822617303.
    (null:1)
07-14 00:23:37.295    7433-7433/? W/Web Console﹕ The page at about:blank displayed insecure content from gmsg://mobileads.google.com/loadAdURL?drt_include=1&request_id=d72e3527-8d9a-4f0c-b771-18f9f922403c&request_scenario=online_request&type=admob&url=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma%3Fsession_id%3D15701098619806543204%26seq_num%3D1%26rm%3D1%26fdz%3D-1%26adtest%3Don%26js%3Dafma-sdk-a-v7574000.7571000.1%26eid%3D46621077%252C46621098%252C318474371%26hl%3Dru%26submodel%3DHTC%2520Sensation%2520XE%2520with%2520Beats%2520Audio%2520Z715e%26gnt%3D0%26native_templates%3D1%252C2%26ma%3D0%26platform%3DHTC%26forceHttps%3Dtrue%26u_sd%3D1.5%26sp%3D0%26cnt%3D1%26native_version%3D3%26muv%3D15%26riv%3D0%26ms%3DbBaKMM241P7ZUZbIw630exH1iY80ufKc8Z12nKVbEOI4eDpWg2KlW24F0xUKsi7r1FLSD9ISfYeAdN8C_jtjpY6xx5wG5BARDyrZUgeW_qnHTavdTzBzrpSaI1-3y19EgkD3mrsTe5XMetskcd4lTidQnf63xhT8BeE9u1LAJb1pTp_N8TssVCQNtBBRk59fPAK8olxqwKJm-nDWnLngOBSH0F_dXlmb_-ZhxT0VwHw8Hv406I5dXx2jh6YAvc0kd_cJwwBfLhCXEnxqcNCgAhLJWbdnzqf2kYziboXI8BGqqPbVNRNeKqzWB149Ri-q0no25qbKdZIbT0yuMNMkgA%26mv%3D80321300.com.android.vending%26format%3D320x50_mb%26coh%3D1%26gl%3DRU%26request_id%3Dd72e3527-8d9a-4f0c-b771-18f9f922403c%26am%3D0%26native_image_orientation%3Dany%26u_w%3D360%26u_h%3D640%26msid%3Dcom.clockbyte.vkgroupwatcher%26app_name%3D6.android.com.clockbyte.vkgroupwatcher%26an%3D6.android.com.clockbyte.vkgroupwatcher%26net%3Dwi%26u_audio%3D3%26u_so%3Dp%26preqs%3D0%26support_transparent_background%3Dtrue%26pimp%3D0%26currts%3D4989768%26pclick%3D0%26basets%3D4989768%26output%3Dhtml%26region%3Dmobile_app%26u_tz%3D180%26client_sdk%3D1%26ex%3D1%26client%3Dca-app-pub-3940256099942544%26slotname%3D6300978111%26gsb%3Dwi%26bisch%3Dtrue%26blev%3D0.55%26cans%3D-1%26canm%3Dfalse%26caps%3DinlineVideo_interactiveVideo_mraid1_mraid2_th_autoplay_mediation_transparentBackground_sdkAdmobApiForAds_di%26_efs%3Dfalse%26blockAutoClicks%3D0%26forceGmsDoritos%3D1%26tcar%3D46%26jsv%3D176%26urll%3D1435&base_uri=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma&use_webview_loadurl=0&enable_auto_click_protection=0&google.afma.Notify_dt=1436822617303.
            at null:1
07-14 00:23:37.335    7433-7857/? D/skia﹕ WebFrame::loadStarted (0) gmsg://mobileads.google.com/loadAdURL?drt_include=1&request_id=d72e3527-8d9a-4f0c-b771-18f9f922403c&request_scenario=online_request&type=admob&url=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma%3Fsession_id%3D157010986198
07-14 00:23:37.345    7433-7433/? W/Ads﹕ JS: The page at about:blank displayed insecure content from gmsg://mobileads.google.com/loadAdURL?drt_include=1&request_id=d72e3527-8d9a-4f0c-b771-18f9f922403c&request_scenario=online_request&type=admob&url=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma%3Fsession_id%3D15701098619806543204%26seq_num%3D1%26rm%3D1%26fdz%3D-1%26adtest%3Don%26js%3Dafma-sdk-a-v7574000.7571000.1%26eid%3D46621077%252C46621098%252C318474371%26hl%3Dru%26submodel%3DHTC%2520Sensation%2520XE%2520with%2520Beats%2520Audio%2520Z715e%26gnt%3D0%26native_templates%3D1%252C2%26ma%3D0%26platform%3DHTC%26forceHttps%3Dtrue%26u_sd%3D1.5%26sp%3D0%26cnt%3D1%26native_version%3D3%26muv%3D15%26riv%3D0%26ms%3DbBaKMM241P7ZUZbIw630exH1iY80ufKc8Z12nKVbEOI4eDpWg2KlW24F0xUKsi7r1FLSD9ISfYeAdN8C_jtjpY6xx5wG5BARDyrZUgeW_qnHTavdTzBzrpSaI1-3y19EgkD3mrsTe5XMetskcd4lTidQnf63xhT8BeE9u1LAJb1pTp_N8TssVCQNtBBRk59fPAK8olxqwKJm-nDWnLngOBSH0F_dXlmb_-ZhxT0VwHw8Hv406I5dXx2jh6YAvc0kd_cJwwBfLhCXEnxqcNCgAhLJWbdnzqf2kYziboXI8BGqqPbVNRNeKqzWB149Ri-q0no25qbKdZIbT0yuMNMkgA%26mv%3D80321300.com.android.vending%26format%3D320x50_mb%26coh%3D1%26gl%3DRU%26request_id%3Dd72e3527-8d9a-4f0c-b771-18f9f922403c%26am%3D0%26native_image_orientation%3Dany%26u_w%3D360%26u_h%3D640%26msid%3Dcom.clockbyte.vkgroupwatcher%26app_name%3D6.android.com.clockbyte.vkgroupwatcher%26an%3D6.android.com.clockbyte.vkgroupwatcher%26net%3Dwi%26u_audio%3D3%26u_so%3Dp%26preqs%3D0%26support_transparent_background%3Dtrue%26pimp%3D0%26currts%3D4989768%26pclick%3D0%26basets%3D4989768%26output%3Dhtml%26region%3Dmobile_app%26u_tz%3D180%26client_sdk%3D1%26ex%3D1%26client%3Dca-app-pub-3940256099942544%26slotname%3D6300978111%26gsb%3Dwi%26bisch%3Dtrue%26blev%3D0.55%26cans%3D-1%26canm%3Dfalse%26caps%3DinlineVideo_interactiveVideo_mraid1_mraid2_th_autoplay_mediation_transparentBackground_sdkAdmobApiForAds_di%26_efs%3Dfalse%26blockAutoClicks%3D0%26forceGmsDoritos%3D1%26tcar%3D46%26jsv%3D176%26urll%3D1435&base_uri=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma&use_webview_loadurl=0&enable_auto_click_protection=0&google.afma.Notify_dt=1436822617303.
    (null:1)
07-14 00:23:37.345    7433-7433/? W/Web Console﹕ The page at about:blank displayed insecure content from gmsg://mobileads.google.com/loadAdURL?drt_include=1&request_id=d72e3527-8d9a-4f0c-b771-18f9f922403c&request_scenario=online_request&type=admob&url=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma%3Fsession_id%3D15701098619806543204%26seq_num%3D1%26rm%3D1%26fdz%3D-1%26adtest%3Don%26js%3Dafma-sdk-a-v7574000.7571000.1%26eid%3D46621077%252C46621098%252C318474371%26hl%3Dru%26submodel%3DHTC%2520Sensation%2520XE%2520with%2520Beats%2520Audio%2520Z715e%26gnt%3D0%26native_templates%3D1%252C2%26ma%3D0%26platform%3DHTC%26forceHttps%3Dtrue%26u_sd%3D1.5%26sp%3D0%26cnt%3D1%26native_version%3D3%26muv%3D15%26riv%3D0%26ms%3DbBaKMM241P7ZUZbIw630exH1iY80ufKc8Z12nKVbEOI4eDpWg2KlW24F0xUKsi7r1FLSD9ISfYeAdN8C_jtjpY6xx5wG5BARDyrZUgeW_qnHTavdTzBzrpSaI1-3y19EgkD3mrsTe5XMetskcd4lTidQnf63xhT8BeE9u1LAJb1pTp_N8TssVCQNtBBRk59fPAK8olxqwKJm-nDWnLngOBSH0F_dXlmb_-ZhxT0VwHw8Hv406I5dXx2jh6YAvc0kd_cJwwBfLhCXEnxqcNCgAhLJWbdnzqf2kYziboXI8BGqqPbVNRNeKqzWB149Ri-q0no25qbKdZIbT0yuMNMkgA%26mv%3D80321300.com.android.vending%26format%3D320x50_mb%26coh%3D1%26gl%3DRU%26request_id%3Dd72e3527-8d9a-4f0c-b771-18f9f922403c%26am%3D0%26native_image_orientation%3Dany%26u_w%3D360%26u_h%3D640%26msid%3Dcom.clockbyte.vkgroupwatcher%26app_name%3D6.android.com.clockbyte.vkgroupwatcher%26an%3D6.android.com.clockbyte.vkgroupwatcher%26net%3Dwi%26u_audio%3D3%26u_so%3Dp%26preqs%3D0%26support_transparent_background%3Dtrue%26pimp%3D0%26currts%3D4989768%26pclick%3D0%26basets%3D4989768%26output%3Dhtml%26region%3Dmobile_app%26u_tz%3D180%26client_sdk%3D1%26ex%3D1%26client%3Dca-app-pub-3940256099942544%26slotname%3D6300978111%26gsb%3Dwi%26bisch%3Dtrue%26blev%3D0.55%26cans%3D-1%26canm%3Dfalse%26caps%3DinlineVideo_interactiveVideo_mraid1_mraid2_th_autoplay_mediation_transparentBackground_sdkAdmobApiForAds_di%26_efs%3Dfalse%26blockAutoClicks%3D0%26forceGmsDoritos%3D1%26tcar%3D46%26jsv%3D176%26urll%3D1435&base_uri=https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fmads%2Fgma&use_webview_loadurl=0&enable_auto_click_protection=0&google.afma.Notify_dt=1436822617303.
            at null:1
07-14 00:23:37.365    7433-7433/? W/Ads﹕ JS: The page at https://googleads.g.doubleclick.net/mads/static/mad/sdk/native/sdk-core-v40.html displayed insecure content from file:///android_asset/webkit/android-weberror.png.
    (null:1)
07-14 00:23:37.365    7433-7433/? W/Web Console﹕ The page at https://googleads.g.doubleclick.net/mads/static/mad/sdk/native/sdk-core-v40.html displayed insecure content from file:///android_asset/webkit/android-weberror.png.
            at null:1
07-14 00:23:38.155    7433-7857/? D/skia﹕ WebFrame::loadStarted (1) about:blank
07-14 00:23:38.276    7698-7698/com.clockbyte.vkgroupwatcher I/dalvikvm﹕ Could not find method android.webkit.WebSettings.setMixedContentMode, referenced from method com.google.android.gms.ads.internal.t.h.<init>
07-14 00:23:38.286    7698-7698/com.clockbyte.vkgroupwatcher I/dalvikvm﹕ Could not find method android.webkit.WebView.evaluateJavascript, referenced from method com.google.android.gms.ads.internal.t.h.evaluateJavascript
07-14 00:23:38.286    7698-7698/com.clockbyte.vkgroupwatcher I/dalvikvm﹕ Could not find method com.google.android.gms.ads.internal.t.h.isAttachedToWindow, referenced from method com.google.android.gms.ads.internal.t.h.onDraw
07-14 00:23:38.286    7698-7698/com.clockbyte.vkgroupwatcher W/dalvikvm﹕ VFY: unable to resolve virtual method 6452: Lcom/google/android/gms/ads/internal/t/h;.isAttachedToWindow ()Z
07-14 00:23:38.336    7698-7827/com.clockbyte.vkgroupwatcher D/skia﹕ WebFrame::loadStarted (1) https://googleads.g.doubleclick.net/mads/static/mad/sdk/native/native_ads.html
07-14 00:23:38.916    7698-7827/com.clockbyte.vkgroupwatcher D/skia﹕ WebFrame::loadStarted (0) gmsg://mobileads.google.com/nativeAdPreProcess?failure=true&google.afma.Notify_dt=1436822618925
07-14 00:23:38.926    7698-7698/com.clockbyte.vkgroupwatcher W/Ads﹕ JS: The page at about:blank displayed insecure content from gmsg://mobileads.google.com/nativeAdPreProcess?failure=true&google.afma.Notify_dt=1436822618925.
    (null:1)
07-14 00:23:38.926    7698-7698/com.clockbyte.vkgroupwatcher W/Web Console﹕ The page at about:blank displayed insecure content from gmsg://mobileads.google.com/nativeAdPreProcess?failure=true&google.afma.Notify_dt=1436822618925.
            at null:1
07-14 00:23:38.946    7698-7698/com.clockbyte.vkgroupwatcher W/Ads﹕ Failed to load ad: 0

Updated 3 I tried to get the Content ads only (by commenting the corresponding block in the AdLoader.Builder) as @RedBrogdon adviced. Here is the log

08-17 12:07:16.806    4918-5025/com.engineers.admobtest54321 D/dalvikvm﹕ DexOpt: --- BEGIN 'ads-973066727.jar' (bootstrap=0) ---
08-17 12:07:16.926    4918-5025/com.engineers.admobtest54321 D/dalvikvm﹕ DexOpt: --- END 'ads-973066727.jar' (success) ---
08-17 12:07:16.926    4918-5025/com.engineers.admobtest54321 D/dalvikvm﹕ DEX prep '/data/data/com.engineers.admobtest54321/cache/ads-973066727.jar': unzip in 0ms, rewrite 123ms
08-17 12:07:16.946    4918-4918/com.engineers.admobtest54321 I/Ads﹕ Starting ad request.
08-17 12:07:17.566    4918-5055/com.engineers.admobtest54321 I/Ads﹕ Trying mediation network:
08-17 12:07:17.576    4918-4918/com.engineers.admobtest54321 I/Ads﹕ Instantiating mediation adapter: com.google.DummyAdapter
08-17 12:07:17.576    4918-4918/com.engineers.admobtest54321 W/Ads﹕ Could not instantiate mediation adapter: com.google.DummyAdapter. com.google.DummyAdapter
08-17 12:07:17.576    4918-5055/com.engineers.admobtest54321 I/Ads﹕ No fill from any mediation ad networks.
08-17 12:07:17.576    4918-4918/com.engineers.admobtest54321 W/Ads﹕ Failed to load ad: 3

Answer 1

Note from documentation

Note: At the current time, publishers should not use the addTestDevice method with native ad requests. Using the above ad unit ID with calls to addTestDevice is the current best practice for testing.

So try removing calls to addTestDevice(deviceId). I've had same issue and its start working after I've done that.