Android 关于wifi管理的代码

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开启和关闭wifi的代码

1、需要申请的权限
　　android.permission.ACCESS_WIFI_STATE
　　android.permission.CHANGE_WIFI_STATE
　　android.permission.WAKE_LOCK
2、获取WifiManager
　　wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
3、开启、关闭wifi
　　if (wifiManager.isWifiEnabled()) {
　　wifiManager.setWifiEnabled(false);
　　} else {
　　wifiManager.setWifiEnabled(true);
　　}

Android设置wifi

1.new 一个wificonfiguration对象。

2.设置这个对象的一些属性。

WifiConfiguration wc = new WifiConfiguration();wc.SSID = "\""+sr.SSID+"\"";      //<span style="color: rgb(255, 0, 0); ">这个地方一定要注意了。旁边的“是不能够省略的。密码的地方也一样。</span>wc.preSharedKey = "\""+etPassword.getText().toString()+"\"";      //该热点的密码wc.hiddenSSID = true;wc.status = WifiConfiguration.Status.ENABLED;wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);wc.allowedProtocols.set(WifiConfiguration.Protocol.WPA);

3.判断wifi是否加密：

    public static int getSecurity(ScanResult result) {        if (result.capabilities.contains("WEP")) {            return 1;        } else if (result.capabilities.contains("PSK")) {            return 2;        } else if (result.capabilities.contains("EAP")) {            return 3;        }        return 0;    }

4.连接未加密wifi连接：

<pre name="code" class="java">WifiConfiguration config = new WifiConfiguration();config.SSID = "\"" + sr.SSID + "\"";config.allowedKeyManagement.set(KeyMgmt.NONE);int networkId = wifiManager.addNetwork(config);if(networkId != -1){    wifiManager.enableNetwork(networkId, false);    wifiManager.saveConfiguration();}</pre><p></p><pre></pre><p></p>