android 创建热点

【实例简介】android 热点创建
【实例截图】
【核心代码】public abstract class WifiAdmin {

private static final String TAG = "WifiAdmin";

private WifiManager mWifiManager;
private WifiInfo mWifiInfo;
// 扫描出的网络连接列表
private List<ScanResult> mWifiList;
private List<WifiConfiguration> mWifiConfiguration;

private WifiLock mWifiLock;

private String mPasswd = "";
private String mSSID = "";

private Context mContext = null;

public WifiAdmin(Context context) {

mContext = context;

// 取得WifiManager对象
mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
// 取得WifiInfo对象
mWifiInfo = mWifiManager.getConnectionInfo();

Log.v(TAG, "getIpAddress = " mWifiInfo.getIpAddress());
}

// 打开WIFI
public void openWifi() {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(true);
}
}

// 关闭WIFI
public void closeWifi() {
if (mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(false);
}
}

    public abstract Intent myRegisterReceiver(BroadcastReceiver receiver, IntentFilter filter);
    
    public abstract void myUnregisterReceiver(BroadcastReceiver receiver);
    
    public abstract void onNotifyWifiConnected();
    
    public abstract void onNotifyWifiConnectFailed();

// 添加一个网络并连接
public void addNetwork(WifiConfiguration wcg) {

register();

closeWifi();
WifiApAdmin.closeWifiAp(mContext);

int wcgID = mWifiManager.addNetwork(wcg);
boolean b = mWifiManager.enableNetwork(wcgID, true);
}

public static final int TYPE_NO_PASSWD = 0x11;
public static final int TYPE_WEP = 0x12;
public static final int TYPE_WPA = 0x13;

public void addNetwork(String ssid, String passwd, int type) {
if (ssid == null || passwd == null || ssid.equals("")) {
Log.e(TAG, "addNetwork() ## nullpointer error!");
return;
}

if (type != TYPE_NO_PASSWD && type != TYPE_WEP && type != TYPE_WPA) {
Log.e(TAG, "addNetwork() ## unknown type = " type);
}

stopTimer();
unRegister();

addNetwork(createWifiInfo(ssid, passwd, type));
}

private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
if (intent.getAction().equals(WifiManager.RSSI_CHANGED_ACTION)) {
Log.d(TAG, "RSSI changed");

//有可能是正在获取，或者已经获取了
Log.d(TAG, " intent is " WifiManager.RSSI_CHANGED_ACTION);

if (isWifiContected(mContext) == WIFI_CONNECTED) {
stopTimer();
onNotifyWifiConnected();
unRegister();
} else if (isWifiContected(mContext) == WIFI_CONNECT_FAILED) {
stopTimer();
closeWifi();
onNotifyWifiConnectFailed();
unRegister();
} else if (isWifiContected(mContext) == WIFI_CONNECTING) {

}
}
}
};

private final int STATE_REGISTRING = 0x01;
private final int STATE_REGISTERED = 0x02;
private final int STATE_UNREGISTERING = 0x03;
private final int STATE_UNREGISTERED = 0x04;

private int mHaveRegister = STATE_UNREGISTERED;
private synchronized void register() {
Log.v(TAG, "register() ##mHaveRegister = " mHaveRegister);

if (mHaveRegister == STATE_REGISTRING 
|| mHaveRegister == STATE_REGISTERED) {
return ;
}

mHaveRegister = STATE_REGISTRING;
myRegisterReceiver(mBroadcastReceiver, new IntentFilter(WifiManager.RSSI_CHANGED_ACTION));
mHaveRegister = STATE_REGISTERED;

startTimer();
}

private synchronized void unRegister() {
Log.v(TAG, "unRegister() ##mHaveRegister = " mHaveRegister);

if (mHaveRegister == STATE_UNREGISTERED 
|| mHaveRegister == STATE_UNREGISTERING) {
return ;
}

mHaveRegister = STATE_UNREGISTERING;
myUnregisterReceiver(mBroadcastReceiver);
mHaveRegister = STATE_UNREGISTERED;
}

private Timer mTimer = null;
private void startTimer() {
if (mTimer != null) {
stopTimer();
}

mTimer = new Timer(true);
// mTimer.schedule(mTimerTask, 0, 20 * 1000);// 20s
mTimer.schedule(mTimerTask, 30 * 1000);
}

private TimerTask mTimerTask = new TimerTask() {

@Override
public void run() {
// TODO Auto-generated method stub
Log.e(TAG, "timer out!");
onNotifyWifiConnectFailed();
unRegister();
}
};

private void stopTimer() {
if (mTimer != null) {
mTimer.cancel();
mTimer = null;
}
}

@Override
protected void finalize() {
try {
super.finalize();
unRegister();
} catch (Throwable e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

public WifiConfiguration createWifiInfo(String SSID, String password, int type) {

Log.v(TAG, "SSID = " SSID "## Password = " password "## Type = " 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);
}

// 分为三种情况：1没有密码2用wep加密3用wpa加密
if (type == TYPE_NO_PASSWD) {// WIFICIPHER_NOPASS
config.wepKeys[0] = "";
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
config.wepTxKeyIndex = 0;

} else if (type == TYPE_WEP) {  //  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;
} else if (type == TYPE_WPA) {   // 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;
}

public static final int WIFI_CONNECTED = 0x01;
public static final int WIFI_CONNECT_FAILED = 0x02;
public static final int WIFI_CONNECTING = 0x03;
/**
* 判断wifi是否连接成功,不是network
* 
* @param context
* @return
*/
public int isWifiContected(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo wifiNetworkInfo = connectivityManager
.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

Log.v(TAG, "isConnectedOrConnecting = " wifiNetworkInfo.isConnectedOrConnecting());
Log.d(TAG, "wifiNetworkInfo.getDetailedState() = " wifiNetworkInfo.getDetailedState());
if (wifiNetworkInfo.getDetailedState() == DetailedState.OBTAINING_IPADDR
|| wifiNetworkInfo.getDetailedState() == DetailedState.CONNECTING) {
return WIFI_CONNECTING;
} else if (wifiNetworkInfo.getDetailedState() == DetailedState.CONNECTED) {
return WIFI_CONNECTED;
} else {
Log.d(TAG, "getDetailedState() == " wifiNetworkInfo.getDetailedState());
return WIFI_CONNECT_FAILED;
}
}

private WifiConfiguration IsExsits(String SSID) {
List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks();
for (WifiConfiguration existingConfig : existingConfigs) {
if (existingConfig.SSID.equals("\"" SSID "\"") /*&& existingConfig.preSharedKey.equals("\"" password "\"")*/) {
return existingConfig;
}
}
return null;
}



// 断开指定ID的网络
public void disconnectWifi(int netId) {
mWifiManager.disableNetwork(netId);
mWifiManager.disconnect();
}

// 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<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() {
mWifiManager.startScan();
mWifiList = mWifiManager.getScanResults();
mWifiConfiguration = mWifiManager.getConfiguredNetworks();
}

// 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();
}

// 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();
}
}