react-native-network-info getBroadcast() could be null in android on some interfaces

    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.net.InetAddress.toString()' on a null object reference
        at com.pusherman.networkinfo.RNNetworkInfo.getBroadcast(RNNetworkInfo.java:63)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:372)
        at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:160)
        at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
        at android.os.Handler.handleCallback(Handler.java:754)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29)
        at android.os.Looper.loop(Looper.java:163)
        at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:192)
        at java.lang.Thread.run(Thread.java:760)

A possible fix would be add some check to broadcast address

    @ReactMethod
    public void getBroadcast(/*@NonNull String ip, */final Callback callback) {
        String ipAddress = null;

        for (InterfaceAddress address : getInetAddresses()) {
            if (!address.getAddress().isLoopbackAddress()/*address.getAddress().toString().equalsIgnoreCase(ip)*/) {
                InetAddress broadCast = address.getBroadcast();
                if (broadCast != null){
                    ipAddress = broadCast.toString();
                }
            }
        }

        callback.invoke(ipAddress);
    }

Jul 14 '18 07:07 xmeow

also seeing the same issue when running on GenyMotion Emulator

07-17 00:19:44.076  8432  8473 E unknown:ReactNative: Exception in native call
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.net.InetAddress.toString()' on a null object reference
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at com.pusherman.networkinfo.RNNetworkInfo.getBroadcast(RNNetworkInfo.java:63)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at java.lang.reflect.Method.invoke(Native Method)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:372)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:160)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at android.os.Handler.handleCallback(Handler.java:789)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at android.os.Handler.dispatchMessage(Handler.java:98)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at android.os.Looper.loop(Looper.java:164)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:192)
07-17 00:19:44.076  8432  8473 E unknown:ReactNative: 	at java.lang.Thread.run(Thread.java:764)