main代码
public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); boolean b = NetWorkUtil.isNetWorkAvailable(this); String ip = getPhoneIp();
//吐司提示 if (b){ Toast.makeText(getApplicationContext(), "当前有可用网络!IP为"+ip, Toast.LENGTH_LONG).show(); }else { Toast.makeText(getApplicationContext(), "当前没有可用网络!", Toast.LENGTH_LONG).show(); } }
//获取IP的方法 private String getPhoneIp() { try { for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) { //if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet6Address) { return inetAddress.getHostAddress().toString(); } } } } catch (Exception e) { } return null; } }
//判断网络连接的工具类
public class NetWorkUtil { //判断网络是否连接 public static boolean isNetWorkAvailable(Context context) { //网络连接管理器 ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); //网络信息 NetworkInfo info = connectivityManager.getActiveNetworkInfo(); if (info != null) { return true; } return false; } }希望大家多多支持,评论!!!!