title: Admob banner not showing (Android0
body: <p>Did your account banner, ordered all of the keys, the layout, the startup code, etc. As a result, advertising is not showing any test advertising, nor my banner. <strong>The logs this error appears:</strong></p>
  
  <pre><code>There was a problem getting an ad response. ErrorCode: 0
  W / Ads: Failed to load ad: 0
  </code></pre>
  
  <p>What to do? I have searched through the entire Internet with this problem, but have not solved it. Banner was established on 10 hours ago. Tried on Android 4.2.2, 4.4.2, 6.0.1</p>
  
  <p>MainActivity:</p>
  
  <pre><code>  MobileAds.initialize(getApplicationContext(), "my code");
          AdView mAdView = (AdView) findViewById(R.id.adView);
          AdRequest adRequest = new AdRequest.Builder().build();
          mAdView.loadAd(adRequest);
  </code></pre>
  
  <p>main.xml:</p>
  
  <pre><code> &lt;com.google.android.gms.ads.AdView
          android:id="@+id/adView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          ads:adSize="BANNER"
          ads:adUnitId="@string/banner_ad_unit_id"&gt;
      &lt;/com.google.android.gms.ads.AdView&gt;
  </code></pre>
  
  <p>grandle:</p>
  
  <pre><code>dependencies {
      compile project(':ambilWarna')
      compile 'com.android.support:support-v4:21.0.3'
      compile 'com.android.support:appcompat-v7:23.4.0'
      compile 'com.android.support:design:23.4.0'
      compile 'com.google.firebase:firebase-ads:10.0.1'
  
  }
  apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p>manifest.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.minin.floatbatpercentage"
      android:versionCode="2"
      android:versionName="1.1" &gt;
  &lt;uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /&gt;
      &lt;uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/&gt;
         &lt;uses-permission android:name="android.permission.BOOT_COMPLETED"/&gt;
      &lt;uses-permission android:name="android.permission.INTERNET"/&gt;
  &lt;uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/&gt;
  &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/&gt;
      &lt;uses-permission android:name="android.permission.BATTERY_STATS"/&gt;
      &lt;uses-sdk
          android:minSdkVersion="14"
          android:targetSdkVersion="22" /&gt;
  
      &lt;application
          android:allowBackup="true"
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@style/AppTheme" &gt;
          &lt;service android:name=".FloatingText"
              android:enabled="true"
              android:exported="true" &gt;
          &lt;/service&gt;
          &lt;activity android:name=".Main"&gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
             &lt;activity
              android:name=".About"
                 android:configChanges="keyboardHidden|orientation|screenSize"
                 android:label="@string/app_name"
              &gt;
  
          &lt;/activity&gt; 
           &lt;receiver
              android:name=".BootReceiver"
              android:enabled="true"
              android:exported="false" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.BOOT_COMPLETED" /&gt;
              &lt;/intent-filter&gt;
          &lt;/receiver&gt;
          &lt;receiver
              android:name=".BatteryReceiver"
              android:enabled="true"
              android:exported="false" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.battery_changed" /&gt;
              &lt;/intent-filter&gt;
          &lt;/receiver&gt;
  
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>