android_wifi
wifi权限
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
wifi处理类
public class WifiUtil {
//定义一个WifiManager对象
private WifiManager mWifiManager;
//定义一个WifiInfo对象
private WifiInfo mWifiInfo;
//扫描出的网络连接列表
private List<ScanResult> mWifiList;
//网络连接列表
private List<WifiConfiguration> mWifiConfigurations;
WifiLock mWifiLock;
public WifiAdmin(Context context){
//取得WifiManager对象
mWifiManager=(WifiManager) context.getSystemService(Context.WIFI_SERVICE);
//取得WifiInfo对象
mWifiInfo=mWifiManager.getConnectionInfo();
}
//打开wifi
public void openWifi(){
if(!mWifiManager.isWifiEnabled()){
mWifiManager.setWifiEnabled(true);
}
}
//关闭wifi
public void closeWifi(){
if(!mWifiManager.isWifiEnabled()){
mWifiManager.setWifiEnabled(false);
}
}
// 检查当前wifi状态
public int checkState() {
return mWifiManager.getWifiState();
}
//锁定wifiLock
public void acquireWifiLock(){
mWifiLock.acquire();
}
//解锁wifiLock
public void releaseWifiLock(){
//判断是否锁定
if(mWifiLock.isHeld()){
mWifiLock.acquire();
}
}
//创建一个wifiLock
public void createWifiLock(){
mWifiLock=mWifiManager.createWifiLock("test");
}
//得到配置好的网络
public List<WifiConfiguration> getConfiguration(){
return mWifiConfigurations;
}
//指定配置好的网络进行连接
public void connetionConfiguration(int index){
if(index>mWifiConfigurations.size()){
return ;
}
//连接配置好指定ID的网络
mWifiManager.enableNetwork(mWifiConfigurations.get(index).networkId, true);
}
public void startScan(){
mWifiManager.startScan();
//得到扫描结果
mWifiList=mWifiManager.getScanResults();
//得到配置好的网络连接
mWifiConfigurations=mWifiManager.getConfiguredNetworks();
}
//得到网络列表
public List<ScanResult> getWifiList(){
return mWifiList;
}
//查看扫描结果
public StringBuffer lookUpScan(){
StringBuffer sb=new StringBuffer();
for(int i=0;i<mWifiList.size();i++){
sb.append("Index_" + new Integer(i + 1).toString() + ":");
// 将ScanResult信息转换成一个字符串包
// 其中把包括：BSSID、SSID、capabilities、frequency、level
sb.append((mWifiList.get(i)).toString()).append("\n");
}
return sb;
}
public String getMacAddress(){
return (mWifiInfo==null)?"NULL":mWifiInfo.getMacAddress();
}
public String getBSSID(){
return (mWifiInfo==null)?"NULL":mWifiInfo.getBSSID();
}
public int getIpAddress(){
return (mWifiInfo==null)?0:mWifiInfo.getIpAddress();
}
//得到连接的ID
public int getNetWordId(){
return (mWifiInfo==null)?0:mWifiInfo.getNetworkId();
}
//得到wifiInfo的所有信息
public String getWifiInfo(){
return (mWifiInfo==null)?"NULL":mWifiInfo.toString();
}
//添加一个网络并连接
public void addNetWork(WifiConfiguration configuration){
int wcgId=mWifiManager.addNetwork(configuration);
mWifiManager.enableNetwork(wcgId, true);
}
//断开指定ID的网络
public void disConnectionWifi(int netId){
mWifiManager.disableNetwork(netId);
mWifiManager.disconnect();
}
}