Android编程实现连接Wifi(运用Wifi 相关 API)
2012-08-02 16:49
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原地址:http://blog.csdn.net/cscmaker/article/details/7032277
最近,由于作业要求要做一个android应用。其中一个功能模块是通过程序来实现wifi的自动连接。之前没有接触过android,但是以前用过java(菜鸟级)……呵呵,扯远了。
这两天对android的wifi功能研究了一下。下面共享出自己封装的WifiConnect类。(这里参考了ZXing开源项目中wifi模块)
首先,要了解android关于wifi的API.
如果你喜欢看English API,这是android关于wifi的API地址:
http://developer.android.com/reference/android/net/wifi/package-summary.html(配置Wifi,还需要设定权限,android中关于wifi的API文档中说明了要添加什么权限)
如果你一看英语就头疼,这里有关于wifi的api的中文解释
http://note.sdo.com/u/1500295617/n/prb71~jGAHfpnM0l000bgN
切入正题,这里贴出一个封装了的类(WifiConnect),在实例化WifiConnect对象时,需要传入一个WifiManager对象。WifiConnect类向外部提供一个Connect方法,参数是无线的SSID,password,还有加密类型。
[java] view
plaincopy
/*
* WifiConnect.java
* Author: cscmaker
*/
package com.wifi.connect;
import java.util.List;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.util.Log;
public class WifiConnect {
WifiManager wifiManager;
//定义几种加密方式,一种是WEP,一种是WPA,还有没有密码的情况
public enum WifiCipherType
{
WIFICIPHER_WEP,WIFICIPHER_WPA, WIFICIPHER_NOPASS, WIFICIPHER_INVALID
}
//构造函数
public WifiConnect(WifiManager wifiManager)
{
this.wifiManager = wifiManager;
}
//打开wifi功能
private boolean OpenWifi()
{
boolean bRet = true;
if (!wifiManager.isWifiEnabled())
{
bRet = wifiManager.setWifiEnabled(true);
}
return bRet;
}
//提供一个外部接口,传入要连接的无线网
public boolean Connect(String SSID, String Password, WifiCipherType Type)
{
if(!this.OpenWifi())
{
return false;
}
//开启wifi功能需要一段时间(我在手机上测试一般需要1-3秒左右),所以要等到wifi
//状态变成WIFI_STATE_ENABLED的时候才能执行下面的语句
while(wifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLING )
{
try{
//为了避免程序一直while循环,让它睡个100毫秒在检测……
Thread.currentThread();
Thread.sleep(100);
}
catch(InterruptedException ie){
}
}
WifiConfiguration wifiConfig = this.CreateWifiInfo(SSID, Password, Type);
//
if(wifiConfig == null)
{
return false;
}
WifiConfiguration tempConfig = this.IsExsits(SSID);
if(tempConfig != null)
{
wifiManager.removeNetwork(tempConfig.networkId);
}
int netID = wifiManager.addNetwork(wifiConfig);
boolean bRet = wifiManager.enableNetwork(netID, false);
return bRet;
}
//查看以前是否也配置过这个网络
private WifiConfiguration IsExsits(String SSID)
{
List<WifiConfiguration> existingConfigs = wifiManager.getConfiguredNetworks();
for (WifiConfiguration existingConfig : existingConfigs)
{
if (existingConfig.SSID.equals("\""+SSID+"\""))
{
return existingConfig;
}
}
return null;
}
private WifiConfiguration CreateWifiInfo(String SSID, String Password, WifiCipherType Type)
{
WifiConfiguration config = new WifiConfiguration();
config.allowedAuthAlgorithms.clear();
config.allowedGroupCiphers.clear();
config.allowedKeyManagement.clear();
config.allowedPairwiseCiphers.clear();
config.allowedProtocols.clear();
config.SSID = "\"" + SSID + "\"";
if(Type == WifiCipherType.WIFICIPHER_NOPASS)
{
config.wepKeys[0] = "";
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
config.wepTxKeyIndex = 0;
}
if(Type == WifiCipherType.WIFICIPHER_WEP)
{
config.preSharedKey = "\""+Password+"\"";
config.hiddenSSID = true;
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
config.wepTxKeyIndex = 0;
}
if(Type == WifiCipherType.WIFICIPHER_WPA)
{
config.preSharedKey = "\""+Password+"\"";
config.hiddenSSID = true;
//config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
//config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
//config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
//config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
//config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
//config.status = WifiConfiguration.Status.ENABLED;
}
else
{
return null;
}
return config;
}
}
最近,由于作业要求要做一个android应用。其中一个功能模块是通过程序来实现wifi的自动连接。之前没有接触过android,但是以前用过java(菜鸟级)……呵呵,扯远了。
这两天对android的wifi功能研究了一下。下面共享出自己封装的WifiConnect类。(这里参考了ZXing开源项目中wifi模块)
首先,要了解android关于wifi的API.
如果你喜欢看English API,这是android关于wifi的API地址:
http://developer.android.com/reference/android/net/wifi/package-summary.html(配置Wifi,还需要设定权限,android中关于wifi的API文档中说明了要添加什么权限)
如果你一看英语就头疼,这里有关于wifi的api的中文解释
http://note.sdo.com/u/1500295617/n/prb71~jGAHfpnM0l000bgN
切入正题,这里贴出一个封装了的类(WifiConnect),在实例化WifiConnect对象时,需要传入一个WifiManager对象。WifiConnect类向外部提供一个Connect方法,参数是无线的SSID,password,还有加密类型。
[java] view
plaincopy
/*
* WifiConnect.java
* Author: cscmaker
*/
package com.wifi.connect;
import java.util.List;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.util.Log;
public class WifiConnect {
WifiManager wifiManager;
//定义几种加密方式,一种是WEP,一种是WPA,还有没有密码的情况
public enum WifiCipherType
{
WIFICIPHER_WEP,WIFICIPHER_WPA, WIFICIPHER_NOPASS, WIFICIPHER_INVALID
}
//构造函数
public WifiConnect(WifiManager wifiManager)
{
this.wifiManager = wifiManager;
}
//打开wifi功能
private boolean OpenWifi()
{
boolean bRet = true;
if (!wifiManager.isWifiEnabled())
{
bRet = wifiManager.setWifiEnabled(true);
}
return bRet;
}
//提供一个外部接口,传入要连接的无线网
public boolean Connect(String SSID, String Password, WifiCipherType Type)
{
if(!this.OpenWifi())
{
return false;
}
//开启wifi功能需要一段时间(我在手机上测试一般需要1-3秒左右),所以要等到wifi
//状态变成WIFI_STATE_ENABLED的时候才能执行下面的语句
while(wifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLING )
{
try{
//为了避免程序一直while循环,让它睡个100毫秒在检测……
Thread.currentThread();
Thread.sleep(100);
}
catch(InterruptedException ie){
}
}
WifiConfiguration wifiConfig = this.CreateWifiInfo(SSID, Password, Type);
//
if(wifiConfig == null)
{
return false;
}
WifiConfiguration tempConfig = this.IsExsits(SSID);
if(tempConfig != null)
{
wifiManager.removeNetwork(tempConfig.networkId);
}
int netID = wifiManager.addNetwork(wifiConfig);
boolean bRet = wifiManager.enableNetwork(netID, false);
return bRet;
}
//查看以前是否也配置过这个网络
private WifiConfiguration IsExsits(String SSID)
{
List<WifiConfiguration> existingConfigs = wifiManager.getConfiguredNetworks();
for (WifiConfiguration existingConfig : existingConfigs)
{
if (existingConfig.SSID.equals("\""+SSID+"\""))
{
return existingConfig;
}
}
return null;
}
private WifiConfiguration CreateWifiInfo(String SSID, String Password, WifiCipherType Type)
{
WifiConfiguration config = new WifiConfiguration();
config.allowedAuthAlgorithms.clear();
config.allowedGroupCiphers.clear();
config.allowedKeyManagement.clear();
config.allowedPairwiseCiphers.clear();
config.allowedProtocols.clear();
config.SSID = "\"" + SSID + "\"";
if(Type == WifiCipherType.WIFICIPHER_NOPASS)
{
config.wepKeys[0] = "";
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
config.wepTxKeyIndex = 0;
}
if(Type == WifiCipherType.WIFICIPHER_WEP)
{
config.preSharedKey = "\""+Password+"\"";
config.hiddenSSID = true;
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
config.wepTxKeyIndex = 0;
}
if(Type == WifiCipherType.WIFICIPHER_WPA)
{
config.preSharedKey = "\""+Password+"\"";
config.hiddenSSID = true;
//config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
//config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
//config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
//config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
//config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
//config.status = WifiConfiguration.Status.ENABLED;
}
else
{
return null;
}
return config;
}
}
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