【 Android11 WiFi开发 三 】WiFi信息获取与静态IP设置
前言
继续记录Android11上WiFi功能的开发，前面文章介绍了WiFi列表的获取展示，WiFi的连接与断开，那么本篇将介绍WiFi信息获取、静态IP设置。
相关文章
1、【 Android11 WiFi开发 一 】WiFi列表获取与展示
2、【 Android11 WiFi开发 二 】WiFi连接、断开
说明
WiFi信息获取针对的是已连接的WiFi，显示其ip地址、默认网关gateway、子网掩码subnetmask、dns服务器地址。需求相对较为简单，这里就不画流程图，直接看实现。
实现
1、获取连接对象
获取ConnectivityManager对象，这个是网络连接管理类，可获取网络是否连接，连接的网络类型、连接的网络的信息。
private val wifiManager:WifiManager = App.context.getSystemService(Context.WIFI_SERVICE) as WifiManager
private val connectivityManager = App.context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
声明无线网络数据类
/**
* 无线网络信息model
*/
data class Wireless(
//wifi名称
var SSID: String?,
//高级选项开关
var isDhcp: Boolean,
//IPv4
var ipv4: String?,
//子网掩码
var subnetMask: String?,
//默认网关
var gateway: String?,
//dns服务器
var dns :String?
)
2、获取WiFi信息
/**
* 获取已连接的WiFi信息
*/
fun getWiFiInfo(): Wireless {
var ip = "0.0.0.0"
var subnet = "0.0.0.0"
var gateway = "0.0.0.0"
var dns = "0.0.0.0"
val info = wifiManager.connectionInfo
val network = wifiManager.getCurrentNetwork()
val lp = connectivityManager.getLinkProperties(network)
if (lp != null) {
lp.linkAddresses.forEach {
if (it.address is Inet4Address) {
ip = it.address.hostAddress as String
subnet = ipv4PrefixLengthToSubnetMask(it.prefixLength).toString()
}
}
lp.routes.forEach {
if (it.isDefaultRoute && it.hasGateway()) {
gateway = it.gateway?.hostAddress.toString()
}
}
if(gateway.isEmpty()){ gateway = "0.0.0.0" }
dns = if(lp.dnsServers.size > 0){
lp.dnsServers[0].hostAddress as String
}else{
"0.0.0.0"
}
}
return Wireless(info?.ssid, isWiFiDHCP(), ip, subnet, gateway,dns)
}
/**
* 转为子网掩码
*/
private fun ipv4PrefixLengthToSubnetMask(prefixLength: Int): String? {
return try {
val all = InetAddress.getByAddress(byteArrayOf(255.toByte(), 255.toByte(), 255.toByte(), 255.toByte()))
NetworkUtils.getNetworkPart(all, prefixLength).hostAddress
} catch (e: UnknownHostException) {
null
}
}
/**
* WiFi ip是否是自动获取
*/
private fun isWiFiDHCP(): Boolean {
val dhcpInfo: DhcpInfo = wifiManager.dhcpInfo
return dhcpInfo.leaseDuration != 0
}
3、设置WiFi有静态ip地址
/**
* 设置WiFi为静态ip地址
*/
fun setWiFiWithStaticIP(w:Wireless,proxy:Boolean):Boolean{
var success = false
val ipConfig:IpConfiguration
if(!isWiFiEnabled()){ return false }
val wifiConfig = getWiFiConfig(w.SSID)
if(wifiConfig != null){
ipConfig = wifiConfig.getIpConfiguration()
}else{
ipConfig = IpConfiguration()
}
try {
var staticConfig = wifiConfig?.getStaticIpConfiguration()
if(w.isDhcp){
wifiConfig?.setIpAssignment(IpConfiguration.IpAssignment.DHCP)
staticConfig?.clear()
}else{
if("0.0.0.0" == w.ipv4 || "0.0.0.0" == w.subnetMask || "0.0.0.0" == w.gateway || "0.0.0.0" == w.dns){
return false
}
wifiConfig?.setIpAssignment(IpConfiguration.IpAssignment.STATIC)
if(staticConfig == null){
staticConfig = StaticIpConfiguration()
}else{
staticConfig.clear()
}
if(TextUtils.isEmpty(w.ipv4)){
App.context.toast(R.string.wifi_invalid_ip_address)
return false
}
val inetAddress: InetAddress
try {
inetAddress = NetworkUtils.numericToInetAddress(w.ipv4)
}catch (e:Exception){
App.context.toast(R.string.wifi_invalid_ip_address)
return false
}
val netmaskPrefixLength = TestUtils.parsePrefixLength(w.subnetMask!!)
try {
staticConfig!!.ipAddress = LinkAddress(inetAddress,netmaskPrefixLength)
}catch (e:Exception){
App.context.toast(R.string.wifi_invalid_ip_address)
return false
}
if(!TextUtils.isEmpty(w.gateway)){
try {
staticConfig!!.gateway = NetworkUtils.numericToInetAddress(w.gateway) as Inet4Address
} catch (e: Exception) {
App.context.toast(R.string.wifi_invalid_gateway)
return false
}
}
if(!TextUtils.isEmpty(w.dns)){
try {
staticConfig!!.dnsServers.add(NetworkUtils.numericToInetAddress(w.dns))
}catch (e:Exception){
App.context.toast(R.string.wifi_invalid_dns)
return false
}
}
if(!TextUtils.isEmpty(w.dns)){
try {
staticConfig!!.dnsServers.add(NetworkUtils.numericToInetAddress(w.dns))
}catch (e:Exception){
App.context.toast(R.string.wifi_invalid_dns)
return false
}
}
ipConfig.setStaticIpConfiguration(staticConfig)
}
if(!proxy){
wifiConfig?.setIpConfiguration(IpConfiguration(wifiConfig.getIpAssignment(), IpConfiguration.ProxySettings.NONE, staticConfig, null))
saveConfiguration(wifiConfig!!)
updateConfiguration(wifiConfig)
disconnectWiFi()
reconnectWiFi()
}
success = true
}catch (e:Exception){
e.printStackTrace()
}
return success
}
设置静态ip地址需要的类有WifiConfiguration 用于保存WiFi配置。 IpConfiguration 用于IP状态配置，动态或者是静态。StaticIpConfiguration主要用于配置静态IP地址等。
/**
* 保存WiFi配置
*/
private fun saveConfiguration(config:WifiConfiguration){
wifiManager.save(config,null)
}
/**
* 更新WiFi配置
*/
private fun updateConfiguration(config:WifiConfiguration){
wifiManager.updateNetwork(config)
}
/**
* WiFi断开连接
*/
private fun disconnectWiFi():Boolean{
return wifiManager.disconnect()
}
/**
* 重新连接
*/
private fun reconnectWiFi():Boolean{
return wifiManager.reconnect()
}
设置WiFi自动获取ip和静态ip设置流程是一致的，只是不需要用到StaticIpConfiguration去设置静态ip，将IpConfiguration配置设为动态即可。
/**
* 设置WiFi自动获取ip
*/
fun setWiFiWithDHCP(proxy:Boolean,w:Wireless?):Boolean{
if(!isWiFiEnabled()){ return false }
val wifiConfig = getWiFiConfig(w?.SSID)
val staticConfig = wifiConfig?.getStaticIpConfiguration()
staticConfig?.clear()
wifiConfig?.setIpAssignment(IpConfiguration.IpAssignment.DHCP)
val ipConfig:IpConfiguration
if(wifiConfig != null){
ipConfig = wifiConfig.getIpConfiguration()
}else{
ipConfig = IpConfiguration()
}
ipConfig.setStaticIpConfiguration(staticConfig)
wifiConfig?.setIpConfiguration(ipConfig)
if(!proxy){
wifiConfig?.setIpConfiguration(IpConfiguration(wifiConfig.getIpAssignment(), IpConfiguration.ProxySettings.NONE, wifiConfig.getStaticIpConfiguration(), null))
saveConfiguration(wifiConfig!!)
updateConfiguration(wifiConfig)
disconnectWiFi()
reconnectWiFi()
}
return true
}
/**
* 获取当前SSID的WiFi配置
* @param[ssid] 字符串或一串16进制的数字
*/
fun getWiFiConfig(ssid: String?): WifiConfiguration? {
val configs = wifiManager.configuredNetworks
if(App.DEBUG) Log.i(TAG,"configs size = ${configs.size}")
if (configs != null && configs.size > 0 ) {
for( config in configs){
if(App.DEBUG) Log.i(TAG,"config = $config")
val configSSID = config.SSID.replace("\"", "")
if (ssid == configSSID) return config
}
}
return null
}
结尾
以上介绍了WiFi信息的获取，可获取到ip地址、默认网关gateway、子网掩码subnetmask、dns服务器地址等。通过IpConfiguration和StaticIpConfiguration设置动态和静态ip地址。