Android AdMob Mediation Adapter

Android AdMob Mediation Adapter supports all our ad units including the unique Interscroller ad unit. 

AdMob/ display.io ad units mapping:

	display.io	AdMob
	Interscroller	Banner
	Outstream Video	Banner
	Interstitial	Interstitial
	Infeed	Banner
	Medium Rectangle	Banner
	Banner	Banner

To set it up:

1. Add the adapter to your project

Edit your project's build.gradle file in order to declare our maven repository:

 repositories {
    google()
    jcenter()
    maven { url "http://maven.display.io/" }
 }

Add the following dependencies to your app-module's build.gradle file:

implementation ‘com.brandio.ads:sdk:4.5.0’
implementation ‘com.brandio.ads:adapters-admob:4.5.2'

Follow guide to initialize DisplayIO SDK.

2. Create a Google AdMob account and register an app.

3. Use Quick start from Google to setup AdMob SDK.

4. Create a mediation group.

5. In Ad sources section switch off AdMob Network and add a custom event for each ad unit using Class Name com.brandio.ads.adapters.admob.InterstitialAdapter for Interstitial ad unit or com.brandio.ads.adapters.admob.InfeedAdapter for Infeed ad unit or com.brandio.ads.adapters.admob.InterscrollerAdapter for Interscroller ad unit or com.brandio.ads.adapters.admob.BannerAdapter for Banner ad unit or com.brandio.ads.adapters.admob.MediumRectangleAdapter for Medium Rectangle ad unit
and Parameter: <PLACEMENT_ID> where <PLACEMENT_ID> parameter taken from display.io apps page.

Note: Interscroller unit also requires position of ad in your RecyclerView custom event data:

6. Use Banner (Infeed) or Interstitial tutorials to get ads from AdMob.

7. Infeed could be added in RecyclerView by passing it as adapter’s constructor argument:

RecyclerViewAdapter( ... , @NonNull AdView adView) {

...

    this.adView = adView;

}

And be shown in particular position with help of RecyclerView.ViewHolder subclass in RecyclerView.Adapter.onCreateViewHolder method: 

...

static class AdHolder extends RecyclerView.ViewHolder {
   AdHolder(View itemView) {
       super(itemView);
   }
}

...

@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull final
ViewGroup parent, int viewType) {

...

   return new AdHolder(adView);
}

...

 9. Interscroller could be added in RecyclerView with a few steps which require some modifications  of RecyclerView adapter:

• First create nested static class for ad holder inside your adapter with field to store reference to parent (RecyclerView object):

static class AdHolder extends RecyclerView.ViewHolder {
    public ViewGroup parent;
    AdHolder(View itemView) {
        super(itemView);
    }
    public void setParent(ViewGroup parent) {
        this.parent = parent;
    }
}

• Second step is to create the holder for Ad at the proper position using AdHolder. Very important to set the parent for it as shown below:

public RecyclerView.ViewHolder onCreateViewHolder(@NonNull final ViewGroup parent, int viewType) {
    switch (viewType) {
        case AD_VIEW_TYPE:
            AdHolder adHolder = new AdHolder(adView);
            adHolder.setParent(parent);
            return adHolder;

        default:
            // your default list item
    }
}

•  The last step is to bind our ViewHolder with the ad

public void onBindViewHolder(@NonNull final RecyclerView.ViewHolder holder, final int position) {
    if (position == AD_POSITION) {

      InterscrollerAdapter.bindTo(
             (ViewGroup)holder.itemView,
             ((AdHolder)holder).parent,
             position);
}