WIFI连接实现

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目录(?)[+]

实现目标：搜索WIFI，手动输入密码并保存，连接WIFI。第二次连接该WIFI信号不需要输入密码

首先在AndroidManifest.XML中开启响应的权限

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<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"></uses-permission><!-- 允许程序改变网络链接状态 --> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission><!--允许程序访问访问WIFI网络状态信息 --> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission><!-- 允许程序改变WIFI链接状态 --> <uses-permission android:name="android.permission.INTERNET"></uses-permission>

 来自CODE的代码片

wifiPermission

1、开启WIFI

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//开启WIFI public void WifiOpen(){ if(!localWifiManager.isWifiEnabled()){ localWifiManager.setWifiEnabled(true); } }

 来自CODE的代码片

OpenWIFI

2、扫描WIFI信号

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//扫描wifi public void WifiStartScan(){ localWifiManager.startScan(); }

 来自CODE的代码片

StartScan

3、得到扫描WIFI结果

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//得到Scan结果 public List<ScanResult> getScanResults(){ return localWifiManager.getScanResults();//得到扫描结果 }

 来自CODE的代码片

getScan

4、得到WIFi的配置好的信息，包含配置好的密码

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//得到Wifi配置好的信息 public void getConfiguration(){ wifiConfigList = localWifiManager.getConfiguredNetworks();//得到配置好的网络信息 for(int i =0;i<wifiConfigList.size();i++){ Log.i("getConfiguration",wifiConfigList.get(i).SSID); Log.i("getConfiguration",String.valueOf(wifiConfigList.get(i).networkId)); } }

 来自CODE的代码片

getConfig

5、根据WIFI的名称SSID判定指定WIFI是否已经配置好，配置好则返回其networkId，用于连接。之前尝试了BSSID地址没成功，所以只能使用SSID

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//判定指定WIFI是否已经配置好,依据WIFI的地址BSSID,返回NetId public int IsConfiguration(String SSID){ Log.i("IsConfiguration",String.valueOf(wifiConfigList.size())); for(int i = 0; i < wifiConfigList.size(); i++){ Log.i(wifiConfigList.get(i).SSID,String.valueOf( wifiConfigList.get(i).networkId)); if(wifiConfigList.get(i).SSID.equals(SSID)){//地址相同 return wifiConfigList.get(i).networkId; } } return -1; }

 来自CODE的代码片

IsConfiguration

6、如果需要连接的WIFI没有配置好，即没有保存密码。则为指定名称ssid的WIFI添加密码信息psw，添加成功后返回给其分配的networId，同于连接

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//添加指定WIFI的配置信息,原列表不存在此SSID public int AddWifiConfig(List<ScanResult> wifiList,String ssid,String pwd){ int wifiId = -1; for(int i = 0;i < wifiList.size(); i++){ ScanResult wifi = wifiList.get(i); if(wifi.SSID.equals(ssid)){ Log.i("AddWifiConfig","equals"); WifiConfiguration wifiCong = new WifiConfiguration(); wifiCong.SSID = "\""+wifi.SSID+"\"";//\"转义字符，代表" wifiCong.preSharedKey = "\""+pwd+"\"";//WPA-PSK密码 wifiCong.hiddenSSID = false; wifiCong.status = WifiConfiguration.Status.ENABLED; wifiId = localWifiManager.addNetwork(wifiCong);//将配置好的特定WIFI密码信息添加,添加完成后默认是不激活状态，成功返回ID，否则为-1 if(wifiId != -1){ return wifiId; } } } return wifiId; }

 来自CODE的代码片

AddWifiConfig

7、根据步骤6配置好需要连接的WIFI密码信息后，下面通过networkId连接指定WIFI。在连接经过步骤6刚添加配置信息的WIFI信号之前需要重新执行下步骤4，得到 新的配置好信息的列表。

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//连接指定Id的WIFI public boolean ConnectWifi(int wifiId){ for(int i = 0; i < wifiConfigList.size(); i++){ WifiConfiguration wifi = wifiConfigList.get(i); if(wifi.networkId == wifiId){ while(!(localWifiManager.enableNetwork(wifiId, true))){//激活该Id，建立连接 //status:0--已经连接，1--不可连接，2--可以连接 Log.i("ConnectWifi",String.valueOf(wifiConfigList.get(wifiId).status)); } return true; } } return false; }

 来自CODE的代码片

ConnectWifi

这只是简单的应用。

project源码：http://download.youkuaiyun.com/detail/liuhui_8989/7154671

有错误多多指出