Adding ads in Android Studio

Question

I'm new to Android development and want to know about adding ads in Android app. I researched through various Firebase and Android Developers links and finally added the code(s).

ActivityMain.XML:

<com.google.android.gms.ads.AdView
    android:id="@+id/adView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_alignParentBottom="true"
    ads:adSize="BANNER"
    ads:adUnitId="@string/banner_ad_unit_id">
</com.google.android.gms.ads.AdView>

AndroidManifest.XML:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="my.package.name">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

App-level gradle:

    apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "my.ID"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 2
        versionName "2"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    dexOptions {
        javaMaxHeapSize "4g"
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.3.0'
    compile 'com.android.support:support-v4:23.3.0'
    compile 'com.android.support:design:23.3.0'
    compile 'com.google.firebase:firebase-core:10.0.1'
    compile 'com.google.android.gms:play-services:10.0.1'
    compile 'com.google.android.gms:play-services-ads:10.0.1'
    compile 'com.android.support:multidex:1.0.0'
}
apply plugin: 'com.google.gms.google-services'

Project-level build.gradle:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.3'
        classpath 'com.google.gms:google-services:3.0.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

Strings.XML:

<string name="banner_ad_unit_id">AppID from AdMob</string>

MainActivity.JAVA:

MobileAds.initialize(getApplicationContext(), "ca-app-pub-APPID from ADMob");

AdView mAdView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);

Is there something which I'm missing? Will I be able to see ads when I publish it as an update to the already published app in Play Store? Also, how will Admob pay me?

There're no errors after running the app.

Thanks, Kvaibhav01.

Update: I tried to publish the app-release.apk file in the Developer Console and it says:

You uploaded an APK that is signed with a different certificate to your previous APKs. You must use the same certificate.

How to fix this?

your problem is because you use different key to sign the apk. Not because of the admob. — ישו אוהב אותך, Dec 05 '16 at 13:38
please read here https://guides.codepath.com/android/Publishing-to-the-Play-Store — ישו אוהב אותך, Dec 05 '16 at 14:16
@ישואוהבאותך that didn't gave solution! My app is suffering from _same certificate_ error. — Kvaibhav01, Dec 10 '16 at 07:12

score 0 · Accepted Answer · edited May 23 '17 at 12:01

You uploaded an APK that is signed with a different certificate to your previous APKs. You must use the same certificate. How to fix this?

I searched other StackOverflow questions and got to know that the answer for above query is only one. That is, the APK-release file must be signed with the same private key or what you call a KeyStore. (Java KeyStore to be more specific.)

The mistake I committed was that I accidentally deleted the original KeyStore file. Now if I upload the updated APK with a new KeyStore, Google Developer Console won't recognize it as an update to the already existing app. Instead it assumes that you're uploading a fresh app's APK. That's why you get the above error. Even updating versionCode the error persists.

You can read the solution in detail here: https://stackoverflow.com/a/26296942/3647180

Adding ads in Android Studio

1 Answers1