WIFI连接实现

转载地址： http://blog.csdn.net/liuhui_8989/article/details/22962537

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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.csdn.net/detail/liuhui_8989/7154671

有错误多多指出