获取android设备的IP地址

直接贴代码，功能介绍代码里注释：packagecom.hui.wang;importandroid.app.activity;importandroid.app.alertdialog;importandroid.content.dialoginterface;importandroid.net.connectivitym -

直接贴代码，功能介绍代码里注释：

package com.hui.wang;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.ArrayList;
import java.util.Collections;
import java.net.SocketException;
import org.apache.http.conn.util.InetAddressUtils;
import android.widget.TextView;

/**
*
* @author hui.wang
*
*/
public class FindAdressActivity extends Activity {
private TextView ipTextView = null;
private TextView nameTextView = null;
// 定义一个ConnectivityManager对象
private ConnectivityManager mConnectivityManager = null;
// 定义一个NetworkInfo对象
private NetworkInfo mActiveNetInfo = null;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

nameTextView = (TextView) findViewById(R.id.text_name);
ipTextView = (TextView) findViewById(R.id.text_ip);
// 实例化mConnectivityManager对象
mConnectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);// 获取系统的连接服务
// 实例化mActiveNetInfo对象
mActiveNetInfo = mConnectivityManager.getActiveNetworkInfo();// 获取网络连接的信息
if (mActiveNetInfo == null)
myDialog();
else
setUpInfo();

}

// 获取本地IP函数
public String getLocalIpAddress() {
try {
String ipv4;

ArrayList<NetworkInterface> mylist = Collections
.list(NetworkInterface.getNetworkInterfaces());

for (NetworkInterface ni : mylist) {

ArrayList<InetAddress> ialist = Collections.list(ni
.getInetAddresses());
for (InetAddress address : ialist) {
if (!address.isLoopbackAddress()
&& InetAddressUtils.isIPv4Address(ipv4 = address
.getHostAddress())) {
return ipv4;
}
}

}

} catch (SocketException ex) {

}
return null;
}

// 显示IP信息
public void setUpInfo() {
// 如果是WIFI网络
if (mActiveNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {
nameTextView.setText("网络类型：WIFI");

ipTextView.setText("IP地址：" + getLocalIpAddress());
}
// 如果是手机网络
else if (mActiveNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
nameTextView.setText("网络类型：手机");
ipTextView.setText("IP地址：" + getLocalIpAddress());
} else {
nameTextView.setText("网络类型：未知");
ipTextView.setText("IP地址：");
}

}

// 显示对话框
private void myDialog() {
AlertDialog mDialog = new AlertDialog.Builder(FindAdressActivity.this)
.setTitle("注意").setMessage("当前网络不可用，请检查网络！")
.setPositiveButton("确定", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
// 关闭对话框
dialog.dismiss();
// 结束Activity
FindAdressActivity.this.finish();
}
}).create();// 创建这个对话框
mDialog.show();// 显示这个对话框
}

// 获取本地IP函数
public String getLocalIpAddress()方法里面判断IPV4和IPV6如果IPV4不为空返回IPV4。

因为如果不加判断默认返回时IPV6的地址，也就是一串字符串。那是IPV6的IP表示方式。

}

main.XML文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

</LinearLayout>

AndroidManifest.xml添加权限

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.hui.wang"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="12" />

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>

获取android设备的IP地址

获取android设备的IP地址

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