本文牵涉kotlin和rxjava的相关知识
//查询wifi信息需要申请权限，权限工具类就不要在意了，重点在下面PermissionUtils.permission(PermissionConstants.LOCATION).callback(object : PermissionUtils.SimpleCallback { override fun onGranted() { //通过授权后，开启一个等待框 progressDialog.show() // 每2秒发送一次事件 connectObs = Observable.interval(2, TimeUnit.SECONDS) // 取30次，还没连上就结束，算这次超时 .take(30) .subscribeOn(Schedulers.computation()) .subscribe({ //开启扫描 WifiUtils.startScan() //连接 WifiUtils.connect(padHotspotSsid, padHotspotPwd) }, {}, { if (progressDialog.isShowing) progressDialog.dismiss() ToastUtils.showShort("连接屏热点超时") }) } override fun onDenied() { ToastUtils.showShort("您拒绝了请求位置权限，我们无法搜寻网络连接上屏，请在设置中打开") } }).request()复制代码 WifiUtils
object WifiUtils { val wifiManager: WifiManager = Utils.getApp().applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager val connectivityManager: ConnectivityManager = Utils.getApp().applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager fun startScan() { if (!wifiManager.isWifiEnabled) wifiManager.isWifiEnabled = true; wifiManager.startScan() } fun getScanResult() = wifiManager.scanResults fun connect(ssid: String, pwd: String): Boolean {// 之前的写法是之前有连接的话先断连，后来发现小米华为这种一旦断连会特别积极的重连，导致指定的wifi抢不到// 试过之后发现可以不用断，就注释掉了，直接走下面的代码进行连接// 如果已经连上wifi了// if(NetworkUtils.isWifiConnected()) { 直接忘掉// if(!wifiManager.removeNetwork(wifiManager.connectionInfo.networkId)) { 忘不掉，至少尝试断连// wifiManager.disconnect() 断连在某些手机依然可能会失败，或者返回true其实没断掉，或者断掉了立马又被重连。。等等// }// } //在扫描到的wifi中找ssid也就是wifi名相同的，如果没有说明没搜到，那么连不了，等下一次吧 val scanResult = wifiManager.scanResults.singleOrNull { it.SSID == ssid } if (scanResult == null) { return false } else { //如果找到了wifi了，从配置表中搜索该wifi的配置config，也就是以前有没有连接过 var success = false //注意configuredNetworks中的ssid，系统源码中加上了双引号，这里比对的时候要去掉 val config = wifiManager.configuredNetworks.singleOrNull { it.SSID.replace("\"", "") == ssid } if (config != null) { //如果找到了，那么直接连接，不要调用wifiManager.addNetwork 这个方法会更改config的！// val netId = wifiManager.addNetwork(config) success = wifiManager. enableNetwork(config.networkId,true) } else { // 没找到的话，就创建一个新的配置，然后正常的addNetWork、enableNetwork即可 val padWifiNetwork = createWifiConfig(scanResult.SSID, pwd, getCipherType(scanResult.capabilities)) val netId = wifiManager.addNetwork(padWifiNetwork) success = wifiManager. enableNetwork(netId,true) } LogUtils.d("连接${scanResult.SSID}...$success") return success } } fun isConnected(ssid: String): Boolean { return if (wifiManager.isWifiEnabled) { wifiManager.connectionInfo.ssid.replace("\"", "") == ssid } else { false } } private fun createWifiConfig(ssid: String, password: String, type: WifiCapability): WifiConfiguration { //初始化WifiConfiguration val config = WifiConfiguration() config.allowedAuthAlgorithms.clear() config.allowedGroupCiphers.clear() config.allowedKeyManagement.clear() config.allowedPairwiseCiphers.clear() config.allowedProtocols.clear() //指定对应的SSID config.SSID = "\"" + ssid + "\"" //如果之前有类似的配置 val tempConfig = wifiManager.configuredNetworks.singleOrNull { it.SSID == "\"$ssid\"" } if (tempConfig != null) { //则清除旧有配置 不是自己创建的network 这里其实是删不掉的 wifiManager.removeNetwork(tempConfig.networkId) wifiManager.saveConfiguration() } //不需要密码的场景 if (type == WifiCapability.WIFI_CIPHER_NO_PASS) { config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE) //以WEP加密的场景 } else if (type == WifiCapability.WIFI_CIPHER_WEP) { config.hiddenSSID = true config.wepKeys[0] = "\"" + password + "\"" config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN) config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED) config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE) config.wepTxKeyIndex = 0 //以WPA加密的场景，自己测试时，发现热点以WPA2建立时，同样可以用这种配置连接 } else if (type == WifiCapability.WIFI_CIPHER_WPA) { config.preSharedKey = "\"" + password + "\"" config.hiddenSSID = true config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN) config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP) config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK) config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP) config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP) config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP) config.status = WifiConfiguration.Status.ENABLED } return config } fun getCipherType(capabilities: String): WifiCapability { return if (capabilities.contains("WEB")) { WifiCapability.WIFI_CIPHER_WEP } else if (capabilities.contains("PSK")) { WifiCapability.WIFI_CIPHER_WPA } else if (capabilities.contains("WPS")) { WifiCapability.WIFI_CIPHER_NO_PASS } else { WifiCapability.WIFI_CIPHER_NO_PASS } } fun getDhcpInfo(): String { val dhcpInfo = wifiManager.dhcpInfo return intIP2StringIP(dhcpInfo.serverAddress) } fun intIP2StringIP(ip: Int): String { return (ip and 0xFF).toString() + "." + (ip shr 8 and 0xFF) + "." + (ip shr 16 and 0xFF) + "." + (ip shr 24 and 0xFF) }}enum class WifiCapability { WIFI_CIPHER_WEP, WIFI_CIPHER_WPA, WIFI_CIPHER_NO_PASS}}复制代码