Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

public class Main {
    public static String checkWifiConnection(final Activity activity) throws Exception {
        ConnectivityManager connManager = (ConnectivityManager) activity
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (!mWifi.isConnected()) {
            new AlertDialog.Builder(activity).setIcon(android.R.drawable.ic_dialog_alert).setTitle("Error")
                    .setMessage("Wifi not connected. Application will exit.")
                    .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            //activity.finish();
                        }
                    }).show();
            throw new Exception("Wifi");
        }
        WifiManager wifiMgr = (WifiManager) activity.getSystemService(Activity.WIFI_SERVICE);
        WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
        int ip = wifiInfo.getIpAddress();
        return String.format("%d.%d.%d.%d", (ip & 0xff), (ip >> 8 & 0xff), (ip >> 16 & 0xff), (ip >> 24 & 0xff));
    }
}