Android Wifi开发Demo示例

package com.ethanco.wifitransmit; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.wifi.ScanResult; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.util.Log; import java.util.List; import java.util.Timer; import java.util.TimerTask; /** * Created by EthanCo on 2016/4/24. */ 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 WifiManager.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(); 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 .