Android学习笔记二十七：连接Wifi
2016-05-19 13:06
465 查看
出处：http://blog.chinaunix.net/uid-14753126-id-3221715.html
之前有一篇文章已经简单的讲过Wifi的基本知识，请见Android之Wifi学习(1)。本文主要在此基础上，进一步完善程序功能，主要功能有打开无线网卡、关闭无线网卡、检查网卡状态、扫描网络、扫描结果、连接Wifi、断开Wifi、Wifi连接状态。
运行效果图如下：
其中连接Wifi是比较让我头疼的。需要在程序中进行连接，这会有两种情况。第一，Wifi没有密码，可以直接连接；第二，Wifi有密码，在程序中给出密码，然后连接。第一种我查阅相关资料好像确实是可以实现的，第二种我没找到，我自己也不知道该怎么去搞。最后想出一个办法，直接让程序跳到系统设置的Wifi的页面，然后让人手动去设置。观察了一下Android版的QQ，也确实是这么做的。不信你瞧：
点击设置网络后跳转到系统设置页面：
所以此处设置网络我也可以这么做，不过还是有点不爽，可能自己对Wifi这块还不是很熟悉，我会继续查阅相关API文档，到时候再跟大家分享，好了，下面贴一下源代码：
主页面：
[java] view
plaincopyprint?
package org.sunchao;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ScrollView;
import android.widget.TextView;
public class Main extends Activity implements OnClickListener {
// 右侧滚动条按钮
private ScrollView sView;
private Button openNetCard;
private Button closeNetCard;
private Button checkNetCardState;
private Button scan;
private Button getScanResult;
private Button connect;
private Button disconnect;
private Button checkNetWorkState;
private TextView scanResult;
private String mScanResult;
private WifiAdmin mWifiAdmin;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mWifiAdmin = new WifiAdmin(Main.this);
init();
}
/**
* 按钮等控件的初始化
*/
public void init() {
sView = (ScrollView) findViewById(R.id.mScrollView);
openNetCard = (Button) findViewById(R.id.openNetCard);
closeNetCard = (Button) findViewById(R.id.closeNetCard);
checkNetCardState = (Button) findViewById(R.id.checkNetCardState);
scan = (Button) findViewById(R.id.scan);
getScanResult = (Button) findViewById(R.id.getScanResult);
scanResult = (TextView) findViewById(R.id.scanResult);
connect = (Button) findViewById(R.id.connect);
disconnect = (Button) findViewById(R.id.disconnect);
checkNetWorkState = (Button) findViewById(R.id.checkNetWorkState);
openNetCard.setOnClickListener(Main.this);
closeNetCard.setOnClickListener(Main.this);
checkNetCardState.setOnClickListener(Main.this);
scan.setOnClickListener(Main.this);
getScanResult.setOnClickListener(Main.this);
connect.setOnClickListener(Main.this);
disconnect.setOnClickListener(Main.this);
checkNetWorkState.setOnClickListener(Main.this);
}
/**
* WIFI_STATE_DISABLING 0 WIFI_STATE_DISABLED 1 WIFI_STATE_ENABLING 2
* WIFI_STATE_ENABLED 3
*/
public void openNetCard() {
mWifiAdmin.openNetCard();
}
public void closeNetCard() {
mWifiAdmin.closeNetCard();
}
public void checkNetCardState() {
mWifiAdmin.checkNetCardState();
}
public void scan() {
mWifiAdmin.scan();
}
public void getScanResult() {
mScanResult = mWifiAdmin.getScanResult();
scanResult.setText(mScanResult);
}
public void connect() {
mWifiAdmin.connect();
// startActivityForResult(new Intent(
// android.provider.Settings.ACTION_WIFI_SETTINGS), 0);
startActivity(new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS));
}
public void disconnect() {
mWifiAdmin.disconnectWifi();
}
public void checkNetWorkState() {
mWifiAdmin.checkNetWorkState();
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.openNetCard:
openNetCard();
break;
case R.id.closeNetCard:
closeNetCard();
break;
case R.id.checkNetCardState:
checkNetCardState();
break;
case R.id.scan:
scan();
break;
case R.id.getScanResult:
getScanResult();
break;
case R.id.connect:
connect();
break;
case R.id.disconnect:
disconnect();
break;
case R.id.checkNetWorkState:
checkNetWorkState();
break;
default:
break;
}
}
}
package org.sunchao; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener;
import android.widget.Button; import android.widget.ScrollView; import android.widget.TextView; public class Main extends Activity implements OnClickListener { // 右侧滚动条按钮 private ScrollView sView; private Button openNetCard; private Button closeNetCard; private
Button checkNetCardState; private Button scan; private Button getScanResult; private Button connect; private Button disconnect; private Button checkNetWorkState; private TextView scanResult; private String mScanResult; private WifiAdmin mWifiAdmin; /** Called
when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mWifiAdmin = new WifiAdmin(Main.this); init(); } /** * 按钮等控件的初始化 */ public void init() { sView
= (ScrollView) findViewById(R.id.mScrollView); openNetCard = (Button) findViewById(R.id.openNetCard); closeNetCard = (Button) findViewById(R.id.closeNetCard); checkNetCardState = (Button) findViewById(R.id.checkNetCardState); scan = (Button) findViewById(R.id.scan);
getScanResult = (Button) findViewById(R.id.getScanResult); scanResult = (TextView) findViewById(R.id.scanResult); connect = (Button) findViewById(R.id.connect); disconnect = (Button) findViewById(R.id.disconnect); checkNetWorkState = (Button) findViewById(R.id.checkNetWorkState);
openNetCard.setOnClickListener(Main.this); closeNetCard.setOnClickListener(Main.this); checkNetCardState.setOnClickListener(Main.this); scan.setOnClickListener(Main.this); getScanResult.setOnClickListener(Main.this); connect.setOnClickListener(Main.this);
disconnect.setOnClickListener(Main.this); checkNetWorkState.setOnClickListener(Main.this); } /** * WIFI_STATE_DISABLING 0 WIFI_STATE_DISABLED 1 WIFI_STATE_ENABLING 2 * WIFI_STATE_ENABLED 3 */ public void openNetCard() { mWifiAdmin.openNetCard(); } public void
closeNetCard() { mWifiAdmin.closeNetCard(); } public void checkNetCardState() { mWifiAdmin.checkNetCardState(); } public void scan() { mWifiAdmin.scan(); } public void getScanResult() { mScanResult = mWifiAdmin.getScanResult(); scanResult.setText(mScanResult);
} public void connect() { mWifiAdmin.connect(); // startActivityForResult(new Intent( // android.provider.Settings.ACTION_WIFI_SETTINGS), 0); startActivity(new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS)); } public void disconnect() { mWifiAdmin.disconnectWifi();
} public void checkNetWorkState() { mWifiAdmin.checkNetWorkState(); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.openNetCard: openNetCard(); break; case R.id.closeNetCard: closeNetCard(); break; case R.id.checkNetCardState: checkNetCardState();
break; case R.id.scan: scan(); break; case R.id.getScanResult: getScanResult(); break; case R.id.connect: connect(); break; case R.id.disconnect: disconnect(); break; case R.id.checkNetWorkState: checkNetWorkState(); break; default: break; } } } Wifi工具类：
[java] view
plaincopyprint?
package org.sunchao;
import java.util.List;
import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;
import android.util.Log;
public class WifiAdmin {
private final static String TAG = "WifiAdmin";
private StringBuffer mStringBuffer = new StringBuffer();
private List listResult;
private ScanResult mScanResult;
// 定义WifiManager对象
private WifiManager mWifiManager;
// 定义WifiInfo对象
private WifiInfo mWifiInfo;
// 网络连接列表
private List mWifiConfiguration;
// 定义一个WifiLock
WifiLock mWifiLock;
/**
* 构造方法
*/
public WifiAdmin(Context context) {
mWifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
mWifiInfo = mWifiManager.getConnectionInfo();
}
/**
* 打开Wifi网卡
*/
public void openNetCard() {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(true);
}
}
/**
* 关闭Wifi网卡
*/
public void closeNetCard() {
if (mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(false);
}
}
/**
* 检查当前Wifi网卡状态
*/
public void checkNetCardState() {
if (mWifiManager.getWifiState() == 0) {
Log.i(TAG, "网卡正在关闭");
} else if (mWifiManager.getWifiState() == 1) {
Log.i(TAG, "网卡已经关闭");
} else if (mWifiManager.getWifiState() == 2) {
Log.i(TAG, "网卡正在打开");
} else if (mWifiManager.getWifiState() == 3) {
Log.i(TAG, "网卡已经打开");
} else {
Log.i(TAG, "---_---晕......没有获取到状态---_---");
}
}
/**
* 扫描周边网络
*/
public void scan() {
mWifiManager.startScan();
listResult = mWifiManager.getScanResults();
if (listResult != null) {
Log.i(TAG, "当前区域存在无线网络，请查看扫描结果");
} else {
Log.i(TAG, "当前区域没有无线网络");
}
}
/**
* 得到扫描结果
*/
public String getScanResult() {
// 每次点击扫描之前清空上一次的扫描结果
if (mStringBuffer != null) {
mStringBuffer = new StringBuffer();
}
// 开始扫描网络
scan();
listResult = mWifiManager.getScanResults();
if (listResult != null) {
for (int i = 0; i < listResult.size(); i++) {
mScanResult = listResult.get(i);
mStringBuffer = mStringBuffer.append("NO.").append(i + 1)
.append(" :").append(mScanResult.SSID).append("->")
.append(mScanResult.BSSID).append("->")
.append(mScanResult.capabilities).append("->")
.append(mScanResult.frequency).append("->")
.append(mScanResult.level).append("->")
.append(mScanResult.describeContents()).append("\n\n");
}
}
Log.i(TAG, mStringBuffer.toString());
return mStringBuffer.toString();
}
/**
* 连接指定网络
*/
public void connect() {
mWifiInfo = mWifiManager.getConnectionInfo();
}
/**
* 断开当前连接的网络
*/
public void disconnectWifi() {
int netId = getNetworkId();
mWifiManager.disableNetwork(netId);
mWifiManager.disconnect();
mWifiInfo = null;
}
/**
* 检查当前网络状态
*
* @return String
*/
public void checkNetWorkState() {
if (mWifiInfo != null) {
Log.i(TAG, "网络正常工作");
} else {
Log.i(TAG, "网络已断开");
}
}
/**
* 得到连接的ID
*/
public int getNetworkId() {
return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();
}
/**
* 得到IP地址
*/
public int getIPAddress() {
return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();
}
// 锁定WifiLock
public void acquireWifiLock() {
mWifiLock.acquire();
}
// 解锁WifiLock
public void releaseWifiLock() {
// 判断时候锁定
if (mWifiLock.isHeld()) {
mWifiLock.acquire();
}
}
// 创建一个WifiLock
public void creatWifiLock() {
mWifiLock = mWifiManager.createWifiLock("Test");
}
// 得到配置好的网络
public List getConfiguration() {
return mWifiConfiguration;
}
// 指定配置好的网络进行连接
public void connectConfiguration(int index) {
// 索引大于配置好的网络索引返回
if (index >= mWifiConfiguration.size()) {
return;
}
// 连接配置好的指定ID的网络
mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId,
true);
}
// 得到MAC地址
public String getMacAddress() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();
}
// 得到接入点的BSSID
public String getBSSID() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();
}
// 得到WifiInfo的所有信息包
public String getWifiInfo() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();
}
// 添加一个网络并连接
public int addNetwork(WifiConfiguration wcg) {
int wcgID = mWifiManager.addNetwork(mWifiConfiguration.get(3));
mWifiManager.enableNetwork(wcgID, true);
return wcgID;
}
}
AndroidManifest.xml:(注意需要添加的权限)
[html] view
plaincopyprint?
xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.sunchao" android:versionCode="1" android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Main" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
intent-filter>
activity>
application>
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE">uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE">uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE">uses-permission>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE">uses-permission>
manifest>
布局文件就不贴了，我想看界面你都可以自己写出来，如果有需要，这里可以下载源代码：http://download.csdn.net/source/3449837
之前有一篇文章已经简单的讲过Wifi的基本知识，请见Android之Wifi学习(1)。本文主要在此基础上，进一步完善程序功能，主要功能有打开无线网卡、关闭无线网卡、检查网卡状态、扫描网络、扫描结果、连接Wifi、断开Wifi、Wifi连接状态。
运行效果图如下：
其中连接Wifi是比较让我头疼的。需要在程序中进行连接，这会有两种情况。第一，Wifi没有密码，可以直接连接；第二，Wifi有密码，在程序中给出密码，然后连接。第一种我查阅相关资料好像确实是可以实现的，第二种我没找到，我自己也不知道该怎么去搞。最后想出一个办法，直接让程序跳到系统设置的Wifi的页面，然后让人手动去设置。观察了一下Android版的QQ，也确实是这么做的。不信你瞧：
点击设置网络后跳转到系统设置页面：
所以此处设置网络我也可以这么做，不过还是有点不爽，可能自己对Wifi这块还不是很熟悉，我会继续查阅相关API文档，到时候再跟大家分享，好了，下面贴一下源代码：
主页面：
[java] view
plaincopyprint?
package org.sunchao;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ScrollView;
import android.widget.TextView;
public class Main extends Activity implements OnClickListener {
// 右侧滚动条按钮
private ScrollView sView;
private Button openNetCard;
private Button closeNetCard;
private Button checkNetCardState;
private Button scan;
private Button getScanResult;
private Button connect;
private Button disconnect;
private Button checkNetWorkState;
private TextView scanResult;
private String mScanResult;
private WifiAdmin mWifiAdmin;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mWifiAdmin = new WifiAdmin(Main.this);
init();
}
/**
* 按钮等控件的初始化
*/
public void init() {
sView = (ScrollView) findViewById(R.id.mScrollView);
openNetCard = (Button) findViewById(R.id.openNetCard);
closeNetCard = (Button) findViewById(R.id.closeNetCard);
checkNetCardState = (Button) findViewById(R.id.checkNetCardState);
scan = (Button) findViewById(R.id.scan);
getScanResult = (Button) findViewById(R.id.getScanResult);
scanResult = (TextView) findViewById(R.id.scanResult);
connect = (Button) findViewById(R.id.connect);
disconnect = (Button) findViewById(R.id.disconnect);
checkNetWorkState = (Button) findViewById(R.id.checkNetWorkState);
openNetCard.setOnClickListener(Main.this);
closeNetCard.setOnClickListener(Main.this);
checkNetCardState.setOnClickListener(Main.this);
scan.setOnClickListener(Main.this);
getScanResult.setOnClickListener(Main.this);
connect.setOnClickListener(Main.this);
disconnect.setOnClickListener(Main.this);
checkNetWorkState.setOnClickListener(Main.this);
}
/**
* WIFI_STATE_DISABLING 0 WIFI_STATE_DISABLED 1 WIFI_STATE_ENABLING 2
* WIFI_STATE_ENABLED 3
*/
public void openNetCard() {
mWifiAdmin.openNetCard();
}
public void closeNetCard() {
mWifiAdmin.closeNetCard();
}
public void checkNetCardState() {
mWifiAdmin.checkNetCardState();
}
public void scan() {
mWifiAdmin.scan();
}
public void getScanResult() {
mScanResult = mWifiAdmin.getScanResult();
scanResult.setText(mScanResult);
}
public void connect() {
mWifiAdmin.connect();
// startActivityForResult(new Intent(
// android.provider.Settings.ACTION_WIFI_SETTINGS), 0);
startActivity(new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS));
}
public void disconnect() {
mWifiAdmin.disconnectWifi();
}
public void checkNetWorkState() {
mWifiAdmin.checkNetWorkState();
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.openNetCard:
openNetCard();
break;
case R.id.closeNetCard:
closeNetCard();
break;
case R.id.checkNetCardState:
checkNetCardState();
break;
case R.id.scan:
scan();
break;
case R.id.getScanResult:
getScanResult();
break;
case R.id.connect:
connect();
break;
case R.id.disconnect:
disconnect();
break;
case R.id.checkNetWorkState:
checkNetWorkState();
break;
default:
break;
}
}
}
package org.sunchao; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener;
import android.widget.Button; import android.widget.ScrollView; import android.widget.TextView; public class Main extends Activity implements OnClickListener { // 右侧滚动条按钮 private ScrollView sView; private Button openNetCard; private Button closeNetCard; private
Button checkNetCardState; private Button scan; private Button getScanResult; private Button connect; private Button disconnect; private Button checkNetWorkState; private TextView scanResult; private String mScanResult; private WifiAdmin mWifiAdmin; /** Called
when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mWifiAdmin = new WifiAdmin(Main.this); init(); } /** * 按钮等控件的初始化 */ public void init() { sView
= (ScrollView) findViewById(R.id.mScrollView); openNetCard = (Button) findViewById(R.id.openNetCard); closeNetCard = (Button) findViewById(R.id.closeNetCard); checkNetCardState = (Button) findViewById(R.id.checkNetCardState); scan = (Button) findViewById(R.id.scan);
getScanResult = (Button) findViewById(R.id.getScanResult); scanResult = (TextView) findViewById(R.id.scanResult); connect = (Button) findViewById(R.id.connect); disconnect = (Button) findViewById(R.id.disconnect); checkNetWorkState = (Button) findViewById(R.id.checkNetWorkState);
openNetCard.setOnClickListener(Main.this); closeNetCard.setOnClickListener(Main.this); checkNetCardState.setOnClickListener(Main.this); scan.setOnClickListener(Main.this); getScanResult.setOnClickListener(Main.this); connect.setOnClickListener(Main.this);
disconnect.setOnClickListener(Main.this); checkNetWorkState.setOnClickListener(Main.this); } /** * WIFI_STATE_DISABLING 0 WIFI_STATE_DISABLED 1 WIFI_STATE_ENABLING 2 * WIFI_STATE_ENABLED 3 */ public void openNetCard() { mWifiAdmin.openNetCard(); } public void
closeNetCard() { mWifiAdmin.closeNetCard(); } public void checkNetCardState() { mWifiAdmin.checkNetCardState(); } public void scan() { mWifiAdmin.scan(); } public void getScanResult() { mScanResult = mWifiAdmin.getScanResult(); scanResult.setText(mScanResult);
} public void connect() { mWifiAdmin.connect(); // startActivityForResult(new Intent( // android.provider.Settings.ACTION_WIFI_SETTINGS), 0); startActivity(new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS)); } public void disconnect() { mWifiAdmin.disconnectWifi();
} public void checkNetWorkState() { mWifiAdmin.checkNetWorkState(); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.openNetCard: openNetCard(); break; case R.id.closeNetCard: closeNetCard(); break; case R.id.checkNetCardState: checkNetCardState();
break; case R.id.scan: scan(); break; case R.id.getScanResult: getScanResult(); break; case R.id.connect: connect(); break; case R.id.disconnect: disconnect(); break; case R.id.checkNetWorkState: checkNetWorkState(); break; default: break; } } } Wifi工具类：
[java] view
plaincopyprint?
package org.sunchao;
import java.util.List;
import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;
import android.util.Log;
public class WifiAdmin {
private final static String TAG = "WifiAdmin";
private StringBuffer mStringBuffer = new StringBuffer();
private List listResult;
private ScanResult mScanResult;
// 定义WifiManager对象
private WifiManager mWifiManager;
// 定义WifiInfo对象
private WifiInfo mWifiInfo;
// 网络连接列表
private List mWifiConfiguration;
// 定义一个WifiLock
WifiLock mWifiLock;
/**
* 构造方法
*/
public WifiAdmin(Context context) {
mWifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
mWifiInfo = mWifiManager.getConnectionInfo();
}
/**
* 打开Wifi网卡
*/
public void openNetCard() {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(true);
}
}
/**
* 关闭Wifi网卡
*/
public void closeNetCard() {
if (mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(false);
}
}
/**
* 检查当前Wifi网卡状态
*/
public void checkNetCardState() {
if (mWifiManager.getWifiState() == 0) {
Log.i(TAG, "网卡正在关闭");
} else if (mWifiManager.getWifiState() == 1) {
Log.i(TAG, "网卡已经关闭");
} else if (mWifiManager.getWifiState() == 2) {
Log.i(TAG, "网卡正在打开");
} else if (mWifiManager.getWifiState() == 3) {
Log.i(TAG, "网卡已经打开");
} else {
Log.i(TAG, "---_---晕......没有获取到状态---_---");
}
}
/**
* 扫描周边网络
*/
public void scan() {
mWifiManager.startScan();
listResult = mWifiManager.getScanResults();
if (listResult != null) {
Log.i(TAG, "当前区域存在无线网络，请查看扫描结果");
} else {
Log.i(TAG, "当前区域没有无线网络");
}
}
/**
* 得到扫描结果
*/
public String getScanResult() {
// 每次点击扫描之前清空上一次的扫描结果
if (mStringBuffer != null) {
mStringBuffer = new StringBuffer();
}
// 开始扫描网络
scan();
listResult = mWifiManager.getScanResults();
if (listResult != null) {
for (int i = 0; i < listResult.size(); i++) {
mScanResult = listResult.get(i);
mStringBuffer = mStringBuffer.append("NO.").append(i + 1)
.append(" :").append(mScanResult.SSID).append("->")
.append(mScanResult.BSSID).append("->")
.append(mScanResult.capabilities).append("->")
.append(mScanResult.frequency).append("->")
.append(mScanResult.level).append("->")
.append(mScanResult.describeContents()).append("\n\n");
}
}
Log.i(TAG, mStringBuffer.toString());
return mStringBuffer.toString();
}
/**
* 连接指定网络
*/
public void connect() {
mWifiInfo = mWifiManager.getConnectionInfo();
}
/**
* 断开当前连接的网络
*/
public void disconnectWifi() {
int netId = getNetworkId();
mWifiManager.disableNetwork(netId);
mWifiManager.disconnect();
mWifiInfo = null;
}
/**
* 检查当前网络状态
*
* @return String
*/
public void checkNetWorkState() {
if (mWifiInfo != null) {
Log.i(TAG, "网络正常工作");
} else {
Log.i(TAG, "网络已断开");
}
}
/**
* 得到连接的ID
*/
public int getNetworkId() {
return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();
}
/**
* 得到IP地址
*/
public int getIPAddress() {
return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();
}
// 锁定WifiLock
public void acquireWifiLock() {
mWifiLock.acquire();
}
// 解锁WifiLock
public void releaseWifiLock() {
// 判断时候锁定
if (mWifiLock.isHeld()) {
mWifiLock.acquire();
}
}
// 创建一个WifiLock
public void creatWifiLock() {
mWifiLock = mWifiManager.createWifiLock("Test");
}
// 得到配置好的网络
public List getConfiguration() {
return mWifiConfiguration;
}
// 指定配置好的网络进行连接
public void connectConfiguration(int index) {
// 索引大于配置好的网络索引返回
if (index >= mWifiConfiguration.size()) {
return;
}
// 连接配置好的指定ID的网络
mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId,
true);
}
// 得到MAC地址
public String getMacAddress() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();
}
// 得到接入点的BSSID
public String getBSSID() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();
}
// 得到WifiInfo的所有信息包
public String getWifiInfo() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();
}
// 添加一个网络并连接
public int addNetwork(WifiConfiguration wcg) {
int wcgID = mWifiManager.addNetwork(mWifiConfiguration.get(3));
mWifiManager.enableNetwork(wcgID, true);
return wcgID;
}
}
AndroidManifest.xml:(注意需要添加的权限)
[html] view
plaincopyprint?
xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.sunchao" android:versionCode="1" android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Main" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
intent-filter>
activity>
application>
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE">uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE">uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE">uses-permission>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE">uses-permission>
manifest>
布局文件就不贴了，我想看界面你都可以自己写出来，如果有需要，这里可以下载源代码：http://download.csdn.net/source/3449837
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