Android 网络信息和IP地址

Android 网络信息和IP地址

package com.example.java.m1202a;

import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        System.out.println(this.getClass().getCanonicalName());
        test_network();
        test_ipadd();
    }

    /**
     * <uses-permission android:name="android.permission.INTERNET"/>
     * <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
     */

    protected void test_network() {
        ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(getApplicationContext().CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
        System.out.println("toString  " + networkInfo.toString());
        System.out.println("getType  " + networkInfo.getType());
        System.out.println("getTypeName  " + networkInfo.getTypeName());
        System.out.println("getState  " + networkInfo.getState());
        System.out.println("getDetailedState  " + networkInfo.getDetailedState());
        System.out.println("getReason  " + networkInfo.getReason());
        System.out.println("getSubtypeName  " + networkInfo.getSubtypeName());
        System.out.println("getExtraInfo  " + networkInfo.getExtraInfo());
        System.out.println("describeContents  " + networkInfo.describeContents());
        System.out.println(networkInfo.getClass().getCanonicalName());
    }


    protected void test_ipadd() {
        System.out.println("test_ipadd 7777");
        try {
            Enumeration<NetworkInterface> networkInterfaces = null;
            networkInterfaces = NetworkInterface.getNetworkInterfaces();
            while (networkInterfaces.hasMoreElements()) {
                NetworkInterface networkInterface2 = networkInterfaces.nextElement();
                Enumeration<InetAddress> ipadd = networkInterface2.getInetAddresses();
                while (ipadd.hasMoreElements()) {
                    System.out.println(ipadd.nextElement().toString());
                }
            }
            System.out.println(networkInterfaces.getClass().getCanonicalName());
        } catch (SocketException e) {
            e.printStackTrace();
        }
    }
}