React Native SDK

Step 1: Initial build

On your project go over to the app gradle and add the url "https://dl.appnext.com/" Under all projects as follows:

allprojects {
    repositories {
        maven {
            url "https://dl.appnext.com/"
        }
    }
}

In package.json add the npm package dependency to add the react native appnext sdk to your project.

Build the project.

Step 2: Add Ads to your app

Interstitial

Import {Interstitial} from 'react-native-appnext';

Use the config params to set your preferences (See more options on main documentation).
For example:

const config = {specificCategories:'SHOPPING' };
Interstitial.setConfig(config);

Add listeners for onAdLoaded (See more options on main documentation):

Interstitial.onAdLoaded((msg: String) => {  
    console.log(msg);  
});

Load the ad:

Interstitial.load('placementID',
(err: String) => {
console.log(err);
},
(msg: String) => {
 console.log(msg);
 })

Finally, show the ad:
Interstitial.showAd();

FullScreen

Import {FullScreen} from 'react-native-appnext';

Use the config params to set your preferences (See more options on main documentation).
For example:

const config = {specificCategories:'SHOPPING' };
FullScreen.setConfig(config);

Add listeners for onAdLoaded (See more options on main documentation)

FullScreen.onAdLoaded((msg: String) => {
    console.log(msg);
});

Load the ad:

FullScreen.load('placementID',
(err: String) => {
console.log(err);
},
(msg: String) => {
 console.log(msg);
 });

Finally, show the ad:

FullScreen.showAd();

Rewarded

Import {Rewarded} from 'react-native-appnext';

Use the config params to set your preferences (See more options on main documentation).
For example:

const config = {specificCategories:'SHOPPING' };
Rewarded.setConfig(config);

Add listeners for onAdLoaded (See more options on main documentation)

Rewarded.onAdLoaded((msg: String) => {
    console.log(msg);
});

Load the ad:

Rewarded.load('placementID',
(err: String) => {
console.log(err);
},
(msg: String) => {
 console.log(msg);
 });

Finally, show the ad:

Rewarded.showAd();

Banner

Import {BannerView}from 'react-native-appnext';
Place the view in the selected location on the screen by adding
<BannerView placementId="pid"/>

See more options for all of the above on Appnext main documentation.