public class WifiAdmin {
private static final String TAG = WifiAdmin.class.getSimpleName();
// 定义WifiManager对象
private static WifiManager mWifiManager;
// 定义WifiInfo对象
private WifiInfo mWifiInfo;
// 扫描出的网络连接列表
private List<ScanResult> mWifiList = new ArrayList();
// 网络连接列表
private List<WifiConfiguration> mWifiConfiguration;
// 定义一个WifiLock
private WifiLock mWifiLock;
public static boolean isConnect = false;
// 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(Context context) {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(true);
} else if (mWifiManager.getWifiState() == 2) {
Toast.makeText(context, "亲，Wifi正在开启，不用再开了", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "亲，Wifi已经开启,不用再开了", Toast.LENGTH_SHORT).show();
}
}
// 关闭WIFI
public void closeWifi(Context context) {
if (mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(false);
} else if (mWifiManager.getWifiState() == 1) {
Toast.makeText(context, "亲，Wifi已经关闭，不用再关了", Toast.LENGTH_SHORT).show();
} else if (mWifiManager.getWifiState() == 0) {
Toast.makeText(context, "亲，Wifi正在关闭，不用再关了", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "请重新关闭", Toast.LENGTH_SHORT).show();
}
}
// 检查当前WIFI状态
public void checkState(Context context) {
if (mWifiManager.getWifiState() == 0) {
Toast.makeText(context, "Wifi正在关闭", Toast.LENGTH_SHORT).show();
} else if (mWifiManager.getWifiState() == 1) {
Toast.makeText(context, "Wifi已经关闭", Toast.LENGTH_SHORT).show();
} else if (mWifiManager.getWifiState() == 2) {
Toast.makeText(context, "Wifi正在开启", Toast.LENGTH_SHORT).show();
} else if (mWifiManager.getWifiState() == 3) {
Toast.makeText(context, "Wifi已经开启", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "没有获取到WiFi状态", Toast.LENGTH_SHORT).show();
}
}
public boolean getWifiState(Context context) {
if (mWifiManager.getWifiState() == 3) { // Wifi已经开启
return true;
}
return false;
}
// 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<WifiConfiguration> 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(Context context) {
mWifiManager.startScan();
//得到扫描结果
List<ScanResult> results = mWifiManager.getScanResults();
// 得到配置好的网络连接
mWifiConfiguration = mWifiManager.getConfiguredNetworks();
if (results == null) {
if (mWifiManager.getWifiState() == 3) {
Toast.makeText(context, "当前区域没有无线网络", Toast.LENGTH_SHORT).show();
} else if (mWifiManager.getWifiState() == 2) {
Toast.makeText(context, "wifi正在开启，请稍后扫描", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "WiFi没有开启", Toast.LENGTH_SHORT).show();
}
} else {
for (ScanResult result : results) {
if (result.SSID == null || result.SSID.length() == 0 || result.capabilities.contains("[IBSS]")) {
continue;
}
boolean found = false;
for (ScanResult item : mWifiList) {
if (item.SSID.equals(result.SSID) && item.capabilities.equals(result.capabilities)) {
found = true;
break;
}
}
if (!found) {
mWifiList.add(result);
}
}
}
}
// 得到网络列表
public List<ScanResult> getWifiList() {
return mWifiList;
}
// 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();
}
public String getSSID() {
mWifiInfo = mWifiManager.getConnectionInfo();
return (mWifiInfo == null) ? "NULL" : mWifiInfo.getSSID();
}
// 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();
}
public WifiInfo getWifiInfo(Context context) {
return (mWifiInfo == null) ? null : mWifiInfo;
}
public static boolean isConnect(Context context){
WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
if(wifiInfo != null){
NetworkInfo.DetailedState state = wifiInfo.getDetailedStateOf(wifiInfo.getSupplicantState());
Log.i(TAG, "state=" + state);
if (state == NetworkInfo.DetailedState.CONNECTED || state == NetworkInfo.DetailedState.OBTAINING_IPADDR) {
return true;
}
}
return false;
}
// 添加一个网络并连接
public int addNetwork(WifiConfiguration wcg) {
int wcgID = mWifiManager.addNetwork(wcg);
boolean b = mWifiManager.enableNetwork(wcgID, true);
Log.i(TAG, "wcgID=" + wcgID + " ,b=" + b + " ,connect=" + isConnect(null));
return wcgID;
}
// 断开指定ID的网络
public void disconnectWifi(int netId) {
mWifiManager.disableNetwork(netId);
mWifiManager.disconnect();
}
public void removeWifi(int netId) {
disconnectWifi(netId);
mWifiManager.removeNetwork(netId);
}
public int getWifiLevel() {
int level = mWifiInfo.getRssi();
if (level <= 0 && level >= -50) {
return 1;
} else if (level < -50 && level >= -70) {
return 2;
} else if (level < -70 && level >= -80) {
return 3;
} else if (level < -80 && level >= -100) {
return 4;
}
return 4;
}
//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 + "\"";
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);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
config.status = WifiConfiguration.Status.ENABLED;
}
return config;
}
private WifiConfiguration IsExsits(String SSID) {
List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks();
for (WifiConfiguration existingConfig : existingConfigs) {
if (existingConfig.SSID.equals("\"" + SSID + "\"")) {
return existingConfig;
}
}
return null;
}
}
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