android 自动连接WiFi
很久没有写博客了，今天记录下做项目中发现的问题，关于自动连接WiFi问题，本来在网上找了许多，发现测试下来不太好用，于是找了找原因，再次记录一下。
先说工具类吧，包含了许多，网上也能找到类似的
public class WifiAdmin {
// 定义WifiManager对象
private WifiManager mWifiManager;
// 定义WifiInfo对象
private WifiInfo mWifiInfo;
// 扫描出的网络连接列表
private List mWifiList;
// 网络连接列表
private List mWifiConfiguration;
// 定义一个WifiLock
WifiManager.WifiLock mWifiLock;
public WifiManager getmWifiManager() {
return mWifiManager;
}
public void setmWifiManager(WifiManager mWifiManager) {
this.mWifiManager = mWifiManager;
}
// 构造器
public WifiAdmin(Context context) {
// 取得WifiManager对象
mWifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
// 取得WifiInfo对象
mWifiInfo = mWifiManager.getConnectionInfo();
}
// 打开WIFI
public void openWifi() {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(true);
}
}
// 关闭WIFI
public void closeWifi() {
if (mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(false);
}
}
// 检查当前WIFI状态
public int checkState() {
return mWifiManager.getWifiState();
}
// 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);
}
public void startScan() {
mWifiManager.startScan();
// 得到扫描结果
mWifiList = mWifiManager.getScanResults();
// 得到配置好的网络连接
mWifiConfiguration = mWifiManager.getConfiguredNetworks();
}
// 得到网络列表
public List getWifiList() {
return mWifiManager.getScanResults();
}
// 查看扫描结果
public StringBuilder lookUpScan() {
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < mWifiList.size(); i++) {
stringBuilder
.append("Index_" + new Integer(i + 1).toString() + ":");
// 将ScanResult信息转换成一个字符串包
// 其中把包括：BSSID、SSID、capabilities、frequency、level
stringBuilder.append((mWifiList.get(i)).toString());
stringBuilder.append("/n");
}
return stringBuilder;
}
// 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IP地址
public int getIPAddress() {
return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();
}
// 得到连接的ID
public int getNetworkId() {
return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();
}
// 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 void addNetwork(WifiConfiguration wcg) {
int wcgID = mWifiManager.addNetwork(wcg);
mWifiManager.disconnect();
boolean b = mWifiManager.enableNetwork(wcgID, true);
mWifiManager.saveConfiguration();
mWifiManager.reconnect();
System.out.println("b--" + b);
}
// 断开指定ID的网络
public void disconnectWifi(int netId) {
mWifiManager.disableNetwork(netId);
mWifiManager.disconnect();
}
//然后是一个实际应用方法，只验证过没有密码的情况：
public WifiConfiguration CreateWifiInfo(String SSID, String Password, int Type) {
WifiConfiguration config = new WifiConfiguration();
config.allowedAuthAlgorithms.clear();
config.allowedGroupCiphers.clear();
config.allowedKeyManagement.clear();
config.allowedPairwiseCiphers.clear();
config.allowedProtocols.clear();
// config.SSID = "\"" + SSID + "\"";
config.SSID = "\"" + getTrueSSID(SSID) + "\"";
移除掉之前的wifi
WifiConfiguration tempConfig = this.IsExsits(SSID);
if (tempConfig != null) {
mWifiManager.removeNetwork(tempConfig.networkId);
}
if (Type == 1)// WIFICIPHER_NOPASS
{
// config.wepKeys[0] = "";
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
// config.wepTxKeyIndex = 0;
}
if (Type == 2) //WIFICIPHER_WEP
{
config.hiddenSSID = true;
config.wepKeys[0] = "\"" + Password + "\"";
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 == 3) // 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);
这里需要注意下有的文章是注释掉的这一句话，这是不可以的，找了半天才发现原因
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
config.allowedPairwiseCiphers
.set(WifiConfiguration.PairwiseCipher.CCMP);
config.status = WifiConfiguration.Status.ENABLED;
}
return config;
}
public int getCipherType(String ssid) {
List list = mWifiManager.getScanResults();
for (ScanResult scResult : list) {
if (!TextUtils.isEmpty(scResult.SSID)
&& (scResult.SSID.trim().equalsIgnoreCase(
"\"" + ssid + "\"") || scResult.SSID.trim()
.equalsIgnoreCase(ssid))) {
String capabilities = scResult.capabilities;
LogUtil.i("hefeng", "capabilities=" + capabilities);
if (!TextUtils.isEmpty(capabilities)) {
if (capabilities.contains("WPA")
|| capabilities.contains("wpa")) {
return 3;
} else if (capabilities.contains("WEP")
|| capabilities.contains("wep")) {
return 2;
} else {
return 1;
}
}
}
}
return -1;
}
private WifiConfiguration IsExsits(String ssid) {
List existingConfigs = mWifiManager
.getConfiguredNetworks();
for (WifiConfiguration existingConfig : existingConfigs) {
// if (existingConfig.SSID.equals("\"" + SSID + "\"")) {
if (existingConfig.SSID.equalsIgnoreCase("\"" + ssid + "\"")
|| existingConfig.SSID.equalsIgnoreCase(ssid)) {
return existingConfig;
}
}
return null;
}
public boolean ifWifiExsits(String ssid) {
mWifiList = getWifiList();
if (mWifiList == null) {
return false;
}
for (int i = 0; i < mWifiList.size(); i++) {
if (mWifiList.get(i).SSID.equalsIgnoreCase("\"" + ssid + "\"")
|| mWifiList.get(i).SSID.equalsIgnoreCase(ssid)) {
return true;
}
}
return false;
}
public String getTrueSSID(String ssid) {
LogUtil.e("", ssid + "");
mWifiList = getWifiList();
if (mWifiList == null) {
return ssid;
}
for (int i = 0; i < mWifiList.size(); i++) {
if (mWifiList.get(i).SSID.equalsIgnoreCase("\"" + ssid + "\"")
|| mWifiList.get(i).SSID.equalsIgnoreCase(ssid)) {
return mWifiList.get(i).SSID;
}
}
return ssid;
}
public boolean isConnect(String ssid) {
WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
if (wifiInfo != null) {
return wifiInfo.getSSID().equalsIgnoreCase("\"" + ssid + "\"")
|| wifiInfo.getSSID().equalsIgnoreCase(ssid);
}
return false;
}
public WifiInfo getCurrentWifiInfo() {
return mWifiManager.getConnectionInfo();
}
public boolean isWifiEnable() {
return mWifiManager.isWifiEnabled();
}
这个大部分和网上的还是一致的，这里记录下。
接下来是使用
WifiAdmin wifiAdmin = new WifiAdmin(getActivity());
if (!wifiAdmin.isWifiEnable()) {
wifiAdmin.openWifi();
}
if (wifiAdmin.getmWifiManager().isWifiEnabled()) {
if (!wifiAdmin.isConnect("wifi名称")) {
if (wifiAdmin.ifWifiExsits("wifi名称")) {
wifiAdmin.addNetwork(wifiAdmin.CreateWifiInfo("wifi名称", "wifi密码", wifiAdmin.getCipherType("wifi名称")));
}
}
}
这里一定要加获取wifi和改变wifi的权限!!!!!!!!!
写到这里差不多就要结束了，本来开开心心的去试验，发现在6.0之前的版本是可以的，6.0之后的版本是不可以的，找了一下发现是6.0之后获取wifi的列表，需要获取地理位置，进而才能获取到周围的WiFi的列表.这里需要加申请地址位置权限，这里就不太多阐述了。
最后一定要加上获取地理位置权限