android Wifi自動連接

lifei_szdz 2013-03-13

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android Wifi自動連接

分類： Android 2012-04-24 13:34 1464人閱讀評論(0) 收藏舉報

android string api null 加密 class

通過程序來實現(xiàn)wifi的自動連接。

這兩天對android的wifi功能研究了一下。下面共享出自己封裝的WifiConnect類。（這里參考了ZXing開源項目中wifi模塊）

首先，要了解android關(guān)于wifi的API.

如果你喜歡看English API，這是android關(guān)于wifi的API地址：

http://developer./reference/android/net/wifi/package-summary.html（配置Wifi，還需要設(shè)定權(quán)限，android中關(guān)于wifi的API文檔中說明了要添加什么權(quán)限）

如果你一看英語就頭疼，這里有關(guān)于wifi的api的中文解釋

http://note.sdo.com/u/1500295617/n/prb71~jGAHfpnM0l000bgN

切入正題,這里貼出一個封裝了的類(WifiConnect)，在實例化WifiConnect對象時，需要傳入一個WifiManager對象。WifiConnect類向外部提供一個Connect方法，參數(shù)是無線的SSID，password，還有加密類型。

[java] view plain copy ?

/*
* 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;
//定義幾種加密方式，一種是WEP，一種是WPA，還有沒有密碼的情況
public enum WifiCipherType
{
WIFICIPHER_WEP,WIFICIPHER_WPA, WIFICIPHER_NOPASS, WIFICIPHER_INVALID
}
//構(gòu)造函數(shù)
public WifiConnect(WifiManager wifiManager)
{
this.wifiManager = wifiManager;
}
//打開wifi功能
private boolean OpenWifi()
{
boolean bRet = true;
if (!wifiManager.isWifiEnabled())
{
bRet = wifiManager.setWifiEnabled(true);
}
return bRet;
}
//提供一個外部接口，傳入要連接的無線網(wǎng)
public boolean Connect(String SSID, String Password, WifiCipherType Type)
{
if(!this.OpenWifi())
{
return false;
}
//開啟wifi功能需要一段時間(我在手機上測試一般需要1-3秒左右)，所以要等到wifi
//狀態(tài)變成WIFI_STATE_ENABLED的時候才能執(zhí)行下面的語句
while(wifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLING )
{
try{
//為了避免程序一直while循環(huán)，讓它睡個100毫秒在檢測……
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過這個網(wǎng)絡(luò)
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;
}
}