Android background service

In order to accept incoming calls while applicaiton in background you should set notifications property to true (true by default). This will make PJSIP service run in the foreground, supplying the ongoing notification to be shown to the user while in this state. Without foreground notification, Android could kill PJSIP service to reclaim more memory.

let configuration = {
  service: {
    ua: Platform.select({ios: "Reachify iOS", android: "Reachify Android"}), // Default: React Native PjSip (version)
    notifications: true,  // Creates peding notification that will allow service work while your app in background
    notifications: false, // Disables pending notification
    notifications: {      
      account: true,
      call: false         // Disables only call notification
    },
    notifications: {
      account: {
        title: "My cool react native app", // Default: account name
        text: "Here we go",    // Default: account registration status
        info: null,
        ticker: null,
        smallIcon: null,
        largeIcon: null 
      },
      call: {
        title: "Active call",   // Default: "Call in Progress - %Account Name%"
        text: "John Doe",       // Default: "%Caller Name% (%Number%)"
        info: null,
        ticker: null,           // Default: "Call in Progress"
        smallIcon: "icon_call", // Default: R.drawable.stat_sys_phone_call
        largeIcon: null
      }
    }
  },
  network: {
    useAnyway: false,           // Default: true
    useWifi: true,              // Default: true
    use3g: true,                // Default: false
    useEdge: false,             // Default: false
    useGprs: false,             // Default: false
    useInRoaming: false,        // Default: false
    useOtherNetworks: true      // Default: false
  }
};
let endpoint = new Endpoint();
let state = await endpoint.start(configuration);
// ...

smallIcon & largeIcon

To use own images for nofitications, copy them into android/app/src/main/res/mipmap-XXXX/ and set thier names into smallIcon and largeIcon without extension. For more info: ui_guidelines/icon_design_status_bar

Handle clicks to call notifications

Typically you should contain code that will change "route" in react-native app depending on result of endpoint.start command

let state = await endpoint.start(configuration);
let calls = state.calls; // A list of active calls

if (state.hasOwnProperty("notificationCallId")) {
    for (let c of calls) {
        if (c.getId() == state['notificationCallId']) {
            route = {name:'call', call: c};
            break;
        }
    }
}

//...

// If true you should use slider instead of buttons for incoming call, because device was in sleep when this call comes.
if (state.notificationIsFromForeground) {
  //...
}