Code.txt

react-native init RNVideoVoiceCall
cd RNVideoVoiceCall
npm install

Package:
https://reactnavigation.org/docs/intro/
https://github.com/voximplant/react-native-voximplant
https://github.com/joinspontaneous/react-native-loading-spinner-overlay

npm install --save react-navigation
npm install --save react-native-loading-spinner-overlay@latest
npm install react-native-voximplant@latest --save
react-native link

Usage Stack Navigator:
import { StackNavigator } from "react-navigation";

and

return (
          <View>
            <Boiler navigation={this.props.navigation} />
          </View>
);

and

const app = StackNavigator({
  Boiler: {
    screen: HomeScreen,
    navigationOptions: {
      title: "Boiler"
    }
  }
});

Usage spinner:
import Spinner from "react-native-loading-spinner-overlay";

    this.state = {
      loading: false
    };

<Spinner visible={this.state.loading} />

when need to show spinner: this.setState({ loading: true });
when need to hide spinner: this.setState({ loading: false });

Usage voximplant:

react-native link react-native-voximplant

In android/src/main/AndroidManifest.xml add user permissions:

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.INTERNET" />


DeviceEventEmitter.addListener("ConnectionSuccessful", () => {
  console.log("Connection successful");
});

DeviceEventEmitter.addListener("LoginSuccessful", () => {
  console.log("Login successful ");
});

DeviceEventEmitter.addListener("LoginFailed", () => {
  console.log("Login failed");
});

  componentDidMount() {
    VoxImplant.SDK.connect();
  }

      const responseM = await fetch(
      "https://api.voximplant.com/platform_api/Logon/?account_email=" +
        Vemail +
        "&account_password=" +
        Vpassword
    );
    const jsonM = await responseM.json();
    const api_key = jsonM.api_key;
    const account_id = JSON.stringify(jsonM.account_id);
    await AsyncStorage.setItem("API", api_key);
    await AsyncStorage.setItem("ACC_ID", account_id);

    VoxImplant.SDK.login(
      usernameValue +
        "@" +
        appnameValue +
        "." +
        accnameValue +
        ".voximplant.com",
      passwordValue
    );