android - Interstitial not loading.? -

public class mainactivity extends actionbaractivity { interstitialad minterstitialad; @override public void onbackpressed() {     showad();     finish(); } @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     minterstitialad = new interstitialad(this);     //minterstitialad.setadunitid(string.valueof(r.string.interstitial_ad_unit_id));     //minterstitialad.setadunitid(getstring(r.string.interstitial_ad_unit_id));     minterstitialad.setadunitid("ca-app-pub-6342248862135370/7323606247");     requestnewinterstitial();     minterstitialad.setadlistener(new adlistener() {         @override         public void onadfailedtoload(int errorcode) {             toast.maketext(getapplicationcontext(),"ad failed load", toast.length_short).show();         }         @override         public void onadloaded() {             toast.maketext(getapplicationcontext(),"ad loaded", toast.length_short).show();         }         @override         public void onadclosed(){requestnewinterstitial();}     });     //load ad starts     adview madview=(adview) findviewbyid(r.id.adview);     adrequest adrequest = new adrequest.builder().build();     madview.loadad(adrequest);     //load ad stops } public void second(view view){     intent = new intent(getapplicationcontext(), second.class);     startactivity(i); } public void showad(){     if(minterstitialad.isloaded()){         toast.maketext(getapplication(), "the ad has loaded.", toast.length_short).show();         minterstitialad.show();     }     else         toast.maketext(getapplication(), "the ad has not loaded yet.", toast.length_short).show();   } public void requestnewinterstitial() {     adrequest adrequest = new adrequest.builder().build();     minterstitialad.loadad(adrequest); } 

}

my problem shows toast "ad failed load".i don't know missing in code. please help!!. , have searched lot on please don't post links questions.

manifest

<?xml version="1.0" encoding="utf-8"?> 

<!-- include required permissions google mobile ads run --> <uses-permission android:name="android.permission.internet" /> <uses-permission android:name="android.permission.access_network_state" />  <application     android:allowbackup="true"     android:icon="@mipmap/ic_launcher"     android:label="@string/app_name"     android:theme="@style/apptheme">      <!-- meta-data tag required use google play services. -->     <meta-data         android:name="com.google.android.gms.version"         android:value="@integer/google_play_services_version" />      <activity         android:name=".mainactivity"         android:label="@string/app_name">         <intent-filter>             <action android:name="android.intent.action.main" />              <category android:name="android.intent.category.launcher" />         </intent-filter>     </activity>     <!-- include adactivity configchanges , 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" />     <activity         android:name=".second"         android:label="@string/title_activity_second"></activity>     <activity         android:name=".third"         android:label="@string/title_activity_third"></activity> </application> 

logcat

http://pastebin.com/w5hdmt3b

logcat says:

06-01 00:59:20.883  16251-16326/abc.myapplication i/ads﹕ no fill ad server. 

that why not getting ads. there none available @ time, place , device. if want test need set test adunitid. given logcat:

06-01 00:59:20.159  16251-16251/abc.myapplication i/ads﹕ use adrequest.builder.addtestdevice("1cc3c3cdc4d015059d600fe0d095eae5") test ads on device.