WifiManager使用

WifiManager mWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);

1.打开wifi:
mWifi.setWifiEnabled(false)

2.扫描wifi列表：
1)mWifi.startScan()  --- 可监听广播获取结果：android.net.wifi.SCAN_RESULTS
mWifi.getScanResults

2)也可以直接获取列表结果
mWifi.getScanResults

3.根据列表判断连接
mWifi.connect(config, listener)
注：
listener回调状态结果

4.关键点为WifiCongituration怎么来？
可以根据/data/misc/wifi/wpa_supplicant.conf来处理
            public AccessPoint(ScanResult result, String password) {

                config = new WifiConfiguration();
                config.SSID = convertToQuotedString(result.SSID);
                config.BSSID = result.BSSID;
                config.shared = true;

                int security = getSecurity(result);
                switch (security) {
                    case SECURITY_NONE:
                        config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
                        break;

                    case AccessPoint.SECURITY_WEP:
                        config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
                        config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
                        config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);

                        int length = password.length();

                        // WEP-40, WEP-104, and 256-bit WEP (WEP-232?)
                        if ((length == 10 || length == 26 || length == 58)
                                && password.matches("[0-9A-Fa-f]*")) {
                            config.wepKeys[0] = password;
                        } else {
                            config.wepKeys[0] = '"' + password + '"';
                        }
                        break;
                    case SECURITY_PSK:
                        config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
                        if (password.matches("[0-9A-Fa-f]{64}")) {
                            config.preSharedKey = password;
                        } else {
                            config.preSharedKey = '"' + password + '"';
                        }
                        break;
                    default:
                        Log.w(TAG, "security "+security+" do not supported");
                        break;
                }

                config.setIpConfiguration(getDefaultIpConfiuration());
                Log.w(TAG, " config "+config.toString());
            }