Android WiFiManager enableNetwork返回false
Android WiFiManager enableNetwork返回false
提问于 2018-12-04 19:36:08
需要澄清：
代码中最有可能出现问题的部分是connect函数，您可以在代码块中找到它。
编辑：
我在LogCat中进行了很好的挖掘，发现了一些有趣的东西(这发生在enableNetwork被调用的那一刻)：
2018-12-04 20:13:14.508 1315-7000/? I/WifiService: enableNetwork uid=10158 disableOthers=true
2018-12-04 20:13:14.508 1315-1607/? D/WifiStateMachine: connectToUserSelectNetwork netId 49, uid 10158, forceReconnect = false
2018-12-04 20:13:14.541 1315-1607/? D/WifiConfigStore: Writing to stores completed in 14 ms.
2018-12-04 20:13:14.541 1315-1607/? E/WifiConfigManager: UID 10158 does not have permission to update configuration "SKYD7F55"WPA_PSK
2018-12-04 20:13:14.541 1315-1607/? I/WifiStateMachine: connectToUserSelectNetwork Allowing uid 10158 with insufficient permissions to connect=49权限：
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />我的任务是创建一个应用程序的一部分，用户将能够看到扫描的WiFi访问点(ScanResult)列表，能够选择一个，如果需要的话，可以显示一个进入PSK的屏幕。输入PSK后，系统将尝试连接到访问点，方法是首先创建和配置WifiConfig对象，使用addNetwork将配置添加到Wifi配置表，然后是disconnect、enableNetwork和reconnect (按顺序排列)。
我使用RX-Java2，以便能够链接网络设置的各个步骤。例如，disconnect方法返回一个Completable，如果WifiManager.disconnect()成功，该Completable将发出一个已完成的事件。这样做的方法是注册一个BroadcastReceiver以侦听NETWORK_STATE_CHANGED_ACTION，然后如果networkInfo extra有详细的状态DISCONNECTED，则发出一个完成事件。同样的逻辑也适用于connect()函数。
现在，addNetwork()成功了(所以我的WiFi配置函数是正确的)，然后我使用andThen将Completable链接到连接Single。我在代码中放置了断点，可以看到一切都按正确的顺序运行，断开连接成功，然后它的广播接收器成功注册，但是enableNetwork()调用返回false (指示OS未能发出enableNetwork命令)。
我99%肯定这不是我如何使用RX的问题，但是，考虑到addNetwork和disconnect正在成功(表明我的wifi配置创建代码很好)，我开始怀疑我的RX代码是否错了，或者，B)我的WiFi配置创建是错误的。
因此，我将发布下面的所有代码以及用例，并将非常感谢任何建议。
Emitters.kt:
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import android.net.NetworkInfo
import android.net.wifi.SupplicantState
import android.net.wifi.WifiConfiguration
import android.net.wifi.WifiInfo
import android.net.wifi.WifiManager
import com.google.common.base.Optional
import io.reactivex.*
import io.reactivex.disposables.CompositeDisposable
import io.reactivex.schedulers.Schedulers
import java.lang.Exception
private const val TAG = "Emitters"
private const val SIGNAL_STRENGTH_RANGE = 4
/**
* Use case of these emitters (in presenter or interactor):
*
* // If network is open, then go ahead and connect to it, else show enter password form
* isNetworkOpen(context, scanResult).flatMapCompletable { isNetworkOpen ->
* if (isNetworkOpen) {
* connectToOpenWifi(context, scanResult.ssid, scanResult.bssid)
* } else {
* Completable.error(WifiException("The specified network requires a password")
* }
* }.subscribeOn(Schedulers.io())
* .observeOn(AndroidSchedulers.mainThread())
* .subscribe({
* view?.showSuccessfullyConnected()
* }, { error ->
* when (error) {
* is WifiAuthException -> {
* val auth = error.wifiScanResult.auth
* val keyManagement = error.wifiScanResult.keyManagement
* val security = "$auth/$keyManagement"
* viewStateStack.add(NetworkSummaryViewState(error.wifiScanResult, security))
* switchToViewState(viewStateStack.peek())
* } else -> {
* viewStateStack.add(FailedToConnectViewState(networkName))
* switchToViewState(viewStateStack.peek())
* }
* }
* }
* })
*
* // Called by view to connect to closed network with provided password
* connectToClosedWifi(context, scanResult, password)
* .subscribeOn(Schedulers.io())
* .observeOn(AndroidSchedulers.mainThread())
* .subscribe({
* view?.showSuccessfullyConnected()
* }, { error ->
* view?.showFailedToConnect()
* })
*/
/**
* Creates a Flowable that emits WiFiScanResults
*/
fun wifiScanResults(context: Context): Flowable<Set<WiFiScanResult>> = Flowable.create<Set<WiFiScanResult>> ({ emitter ->
val wifiManagerWrapper = WifiManagerWrapper(context.applicationContext)
if (!wifiManagerWrapper.wifiManager.isWifiEnabled && !wifiManagerWrapper.wifiManager.setWifiEnabled(true)) {
wifiManagerWrapper.dispose()
emitter.onError(WiFiException("WiFi not enabled and couldn't enable it"))
return@create
}
// Broadcast receiver that handles wifi scan results
val wifiScanReceiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
if (intent.action == WifiManager.SCAN_RESULTS_AVAILABLE_ACTION) {
val scanResults = wifiManagerWrapper.wifiManager.scanResults
if (scanResults !== null) {
emitter.onNext(scanResults.map { scanResult ->
val signalStrength = WifiManager.calculateSignalLevel(scanResult.level, SIGNAL_STRENGTH_RANGE)
val capabilities = scanResult.capabilities.substring(1, scanResult.capabilities.indexOf(']') -1)
.split('-')
.toSet()
WiFiScanResult(scanResult.SSID,
scanResult.BSSID,
capabilities.elementAtOrNull(0) ?: "",
capabilities.elementAtOrNull(1) ?: "",
capabilities.elementAtOrNull(2) ?: "",
signalStrength)
}.toSet())
}
}
if (!wifiManagerWrapper.wifiManager.startScan()) {
emitter.onError(WiFiException("WiFi not enabled"))
}
}
}
val wifiScanResultsIntentFilter = IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)
context.applicationContext.registerReceiver(wifiScanReceiver, wifiScanResultsIntentFilter)
emitter.setCancellable {
context.unregisterReceiver(wifiScanReceiver)
wifiManagerWrapper.dispose()
}
if (!wifiManagerWrapper.wifiManager.startScan()) {
emitter.onError(WiFiException("WiFi not enabled"))
}
}, BackpressureStrategy.LATEST).subscribeOn(Schedulers.io())
/**
* Returns a single indicating if the [scanResult] is open
*/
fun isNetworkOpen(context: Context,
scanResult: WiFiScanResult): Single<Boolean> = Single.create<Boolean> { emitter ->
val wifiManagerWrapper = WifiManagerWrapper(context.applicationContext)
emitter.setCancellable {
wifiManagerWrapper.dispose()
}
if (scanResult.auth.contains("WEP")) {
emitter.onSuccess(true)
} else {
emitter.onSuccess(false)
}
}
/**
* Attempts to connect to an open wifi access point specified by [scanResult]
* Emits a completed event if successful, else emits an error
*/
fun connectToOpenWifi(context: Context,
scanResult: WiFiScanResult): Completable = Completable.create { emitter ->
val ssid = scanResult.ssid
val bssid = scanResult.bssid
val wifiManagerWrappper = WifiManagerWrapper(context.applicationContext)
if (!wifiManagerWrappper.wifiManager.isWifiEnabled && !wifiManagerWrappper.wifiManager.setWifiEnabled(true)) {
wifiManagerWrappper.dispose()
emitter.onError(WiFiException("Wifi not enabled"))
}
val updateWifiStateObs = getExistingConfiguration(wifiManagerWrappper.wifiManager, ssid, bssid).flatMap { existingConfig ->
if (!existingConfig.isPresent) {
createOpenWifiConfiguration(scanResult).flatMap { wifiConfig ->
val newNetworkId = wifiManagerWrappper.wifiManager.addNetwork(wifiConfig)
if (newNetworkId < 0)
throw WiFiException("Failed to add new access point ${scanResult.ssid}")
val currentWifiConnection = wifiManagerWrappper.wifiManager.connectionInfo
if (currentWifiConnection !== null) {
disconnect(context, wifiManagerWrappper.wifiManager).andThen(
connect(context, wifiManagerWrappper.wifiManager, wifiConfig.SSID, newNetworkId)
)
} else {
connect(context, wifiManagerWrappper.wifiManager, wifiConfig.SSID, newNetworkId)
}
}
} else {
Single.just(existingConfig.get())
}
}
val compositeDisposable = CompositeDisposable()
emitter.setCancellable {
compositeDisposable.clear()
wifiManagerWrappper.dispose()
}
try {
compositeDisposable.add(updateWifiStateObs.subscribe({
emitter.onComplete()
}, { error ->
emitter.onError(error)
}))
} catch (ex: Exception) {
compositeDisposable.clear()
wifiManagerWrappper.dispose()
emitter.onError(ex)
}
}
/**
* Attempts to connect to an closed [scanResult] by providing the given [preSharedKey]
* Emits a completed event if successful, else emits an error
*/
fun connectToClosedWifi(context: Context,
scanResult: WiFiScanResult,
preSharedKey: String): Completable = Completable.create { emitter ->
val ssid = scanResult.ssid
val bssid = scanResult.bssid
val wifiManagerWrappper = WifiManagerWrapper(context.applicationContext)
if (!wifiManagerWrappper.wifiManager.isWifiEnabled && !wifiManagerWrappper.wifiManager.setWifiEnabled(true)) {
wifiManagerWrappper.dispose()
emitter.onError(WiFiException("Wifi not enabled"))
}
val updateWifiStateObs =
getExistingConfiguration(wifiManagerWrappper.wifiManager, ssid, bssid).flatMap { existingConfig ->
if (!existingConfig.isPresent) {
createClosedWifiConfiguaration(scanResult, preSharedKey).flatMap { wifiConfig ->
val newNetworkId = wifiManagerWrappper.wifiManager.addNetwork(wifiConfig)
if (newNetworkId < 0)
throw WiFiException("Failed to add new access point ${scanResult.ssid}")
val currentWifiConnection = wifiManagerWrappper.wifiManager.connectionInfo
if (currentWifiConnection !== null) {
disconnect(context, wifiManagerWrappper.wifiManager).andThen(
connect(context, wifiManagerWrappper.wifiManager, wifiConfig.SSID, newNetworkId)
)
} else {
connect(context, wifiManagerWrappper.wifiManager, wifiConfig.SSID, newNetworkId)
}
}
} else {
Single.just(existingConfig.get())
}
}
val compositeDisposable = CompositeDisposable()
emitter.setCancellable {
compositeDisposable.clear()
wifiManagerWrappper.dispose()
}
try {
compositeDisposable.add(updateWifiStateObs.subscribe({
emitter.onComplete()
}, { error ->
emitter.onError(error)
}))
} catch (ex: Exception) {
compositeDisposable.clear()
wifiManagerWrappper.dispose()
emitter.onError(ex)
}
}
/**
* Wrapper class for WiFiManager that creates a multicast lock to make the app handle multicast wifi packets
* Handles disposing of the lock and cleaning up of resources via the dispose method
*/
private class WifiManagerWrapper(context: Context) {
val wifiManager = context.applicationContext.getSystemService(Context.WIFI_SERVICE)
as? WifiManager ?: throw IllegalStateException("Could not get system Context.WIFI_SERVICE")
// Create and acquire a multicast lock to start receiving multicast wifi packets
private var lock = wifiManager.createMulticastLock(TAG + "_lock").apply {
acquire()
}
// Dispose of the lock
fun dispose() {
if (lock.isHeld) {
try {
lock.release()
} catch (ignore: Exception) {
EventReporter.i(TAG, "Failed to release lock on wifi manager wrapper")
}
lock = null
}
}
}
/**
* Disconnects from the connected wifi network and emits a completed event if no errors occurred
*/
private fun disconnect(context: Context,
wifiManager: WifiManager) = Completable.create { emitter ->
val wifiDisconnectionReceiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
if (intent.action == WifiManager.NETWORK_STATE_CHANGED_ACTION) {
val networkInfo = intent.getParcelableExtra<NetworkInfo>(WifiManager.EXTRA_NETWORK_INFO) ?: return
if (networkInfo.detailedState == NetworkInfo.DetailedState.DISCONNECTED) {
context.applicationContext.unregisterReceiver(this)
emitter.onComplete()
}
}
}
}
val networkStateChangedFilter = IntentFilter(WifiManager.NETWORK_STATE_CHANGED_ACTION)
context.applicationContext.registerReceiver(wifiDisconnectionReceiver, networkStateChangedFilter)
emitter.setCancellable {
if (!emitter.isDisposed)
context.applicationContext.unregisterReceiver(wifiDisconnectionReceiver)
}
if (!wifiManager.disconnect())
emitter.onError(WiFiException("Failed to issue disconnect command to wifi subsystem"))
}
/**
* Connects to the wifi access point at specified [ssid] with specified [networkId]
* And returns the [WifiInfo] of the network that has been connected to
*/
private fun connect(context: Context,
wifiManager: WifiManager,
ssid: String,
networkId: Int) = Single.create<WifiInfo> { emitter ->
val wifiConnectionReceiver = object : BroadcastReceiver() {
var oldSupplicantState: SupplicantState? = null
override fun onReceive(context: Context, intent: Intent) {
if (intent.action == WifiManager.NETWORK_STATE_CHANGED_ACTION) {
val networkInfo = intent.getParcelableExtra<NetworkInfo>(WifiManager.EXTRA_NETWORK_INFO) ?: return
if (networkInfo.detailedState == NetworkInfo.DetailedState.DISCONNECTED) {
context.applicationContext.unregisterReceiver(this)
emitter.onError(WiFiException("Failed to connect to wifi network"))
}
else if (networkInfo.detailedState == NetworkInfo.DetailedState.CONNECTED) {
val wifiInfo = intent.getParcelableExtra<WifiInfo>(WifiManager.EXTRA_WIFI_INFO) ?: return
if (ssid == wifiInfo.ssid.unescape()) {
context.applicationContext.unregisterReceiver(this)
emitter.onSuccess(wifiInfo)
}
}
} else if (intent.action == WifiManager.SUPPLICANT_STATE_CHANGED_ACTION) {
val supplicantState = intent.getParcelableExtra<SupplicantState>(WifiManager.EXTRA_NEW_STATE)
val oldSupplicantState = this.oldSupplicantState
this.oldSupplicantState = supplicantState
if (supplicantState == SupplicantState.DISCONNECTED) {
if (oldSupplicantState == null || oldSupplicantState == SupplicantState.COMPLETED) {
return
}
val possibleError = intent.getIntExtra(WifiManager.EXTRA_SUPPLICANT_ERROR, -1)
if (possibleError == WifiManager.ERROR_AUTHENTICATING) {
context.applicationContext.unregisterReceiver(this)
emitter.onError(WiFiException("Wifi authentication failed"))
}
} else if (supplicantState == SupplicantState.SCANNING && oldSupplicantState == SupplicantState.DISCONNECTED) {
context.applicationContext.unregisterReceiver(this)
emitter.onError(WiFiException("Failed to connect to wifi network"))
}
}
}
}
val networkStateChangedFilter = IntentFilter(WifiManager.NETWORK_STATE_CHANGED_ACTION)
networkStateChangedFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION)
context.applicationContext.registerReceiver(wifiConnectionReceiver, networkStateChangedFilter)
emitter.setCancellable {
if (!emitter.isDisposed)
context.applicationContext.unregisterReceiver(wifiConnectionReceiver)
}
wifiManager.enableNetwork(networkId, true)
wifiManager.reconnect()
}
/**
* Returns a Single, wrapping an Optional.absent if no existing configuration exists with the passed [ssid] and [bssid], else the found [WifiConfiguration]
*/
private fun getExistingConfiguration(wifiManager: WifiManager,
ssid: String,
bssid: String) = Single.create<Optional<WifiConfiguration>> { emitter ->
val configuredNetworks = wifiManager.configuredNetworks
if (configuredNetworks.isEmpty()) {
emitter.onSuccess(Optional.absent())
}
emitter.onSuccess(Optional.fromNullable(configuredNetworks.firstOrNull { configuredNetwork ->
configuredNetwork.SSID.unescape() == ssid && configuredNetwork.BSSID == bssid
}))
}
/**
* Emits a single of the open [WifiConfiguration] created from the passed [scanResult]
*/
private fun createOpenWifiConfiguration(scanResult: WiFiScanResult) = Single.fromCallable<WifiConfiguration> {
val auth = scanResult.auth
val keyManagement = scanResult.keyManagement
val pairwiseCipher = scanResult.pairwiseCipher
val config = WifiConfiguration()
config.SSID = "\"" + scanResult.ssid + "\""
config.BSSID = scanResult.bssid
var allowedProtocols = 0
when {
auth.isEmpty() -> {
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.RSN
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.WPA
}
auth.contains("WPA2") -> allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.RSN
auth.contains("WPA") -> {
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.WPA
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.RSN
}
}
config.allowedProtocols.set(allowedProtocols)
var allowedAuthAlgos = 0
when {
auth.contains("EAP") -> allowedAuthAlgos = allowedAuthAlgos or WifiConfiguration.AuthAlgorithm.LEAP
auth.contains("WPA") -> allowedAuthAlgos = allowedAuthAlgos or WifiConfiguration.AuthAlgorithm.OPEN
auth.contains("WEP") -> allowedAuthAlgos = allowedAuthAlgos or WifiConfiguration.AuthAlgorithm.SHARED
}
config.allowedAuthAlgorithms.set(allowedAuthAlgos)
var allowedKeyManagers = WifiConfiguration.KeyMgmt.NONE
if (keyManagement.contains("IEEE802.1X"))
allowedKeyManagers = allowedKeyManagers or WifiConfiguration.KeyMgmt.IEEE8021X
else if (auth.contains("WPA") && keyManagement.contains("EAP"))
allowedKeyManagers = allowedKeyManagers or WifiConfiguration.KeyMgmt.WPA_EAP
else if (auth.contains("WPA") && keyManagement.contains("PSK"))
allowedKeyManagers = allowedKeyManagers or WifiConfiguration.KeyMgmt.WPA_PSK
config.allowedKeyManagement.set(allowedKeyManagers)
var allowedPairWiseCiphers = WifiConfiguration.PairwiseCipher.NONE
if (pairwiseCipher.contains("CCMP"))
allowedPairWiseCiphers = allowedPairWiseCiphers or WifiConfiguration.PairwiseCipher.CCMP
if (pairwiseCipher.contains("TKIP"))
allowedPairWiseCiphers = allowedPairWiseCiphers or WifiConfiguration.PairwiseCipher.TKIP
config.allowedPairwiseCiphers.set(allowedPairWiseCiphers)
config
}
/**
* Emits a single of the closed [WifiConfiguration] created from the passed [scanResult] and [preSharedKey]
* Or, emits an error signalling the [preSharedKey] was empty
*/
private fun createClosedWifiConfiguaration(scanResult: WiFiScanResult, preSharedKey: String) = Single.fromCallable<WifiConfiguration> {
val auth = scanResult.auth
val keyManagement = scanResult.keyManagement
val pairwiseCipher = scanResult.pairwiseCipher
val config = WifiConfiguration()
config.SSID = "\"" + scanResult.ssid + "\""
config.BSSID = scanResult.bssid
var allowedProtocols = 0
when {
auth.isEmpty() -> {
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.RSN
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.WPA
}
auth.contains("WPA2") -> allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.RSN
auth.contains("WPA") -> {
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.WPA
allowedProtocols = allowedProtocols or WifiConfiguration.Protocol.RSN
}
}
config.allowedProtocols.set(allowedProtocols)
var allowedAuthAlgos = 0
when {
auth.contains("EAP") -> allowedAuthAlgos = allowedAuthAlgos or WifiConfiguration.AuthAlgorithm.LEAP
auth.contains("WPA") || auth.contains("WPA2") -> allowedAuthAlgos = allowedAuthAlgos or WifiConfiguration.AuthAlgorithm.OPEN
auth.contains("WEP") -> allowedAuthAlgos = allowedAuthAlgos or WifiConfiguration.AuthAlgorithm.SHARED
}
config.allowedAuthAlgorithms.set(allowedAuthAlgos)
var allowedKeyManagers = WifiConfiguration.KeyMgmt.NONE
if (keyManagement.contains("IEEE802.1X"))
allowedKeyManagers = allowedKeyManagers or WifiConfiguration.KeyMgmt.IEEE8021X
else if (auth.contains("WPA") && keyManagement.contains("EAP"))
allowedKeyManagers = allowedKeyManagers or WifiConfiguration.KeyMgmt.WPA_EAP
else if (auth.contains("WPA") && keyManagement.contains("PSK"))
allowedKeyManagers = allowedKeyManagers or WifiConfiguration.KeyMgmt.WPA_PSK
else if (preSharedKey.isNotEmpty())
allowedKeyManagers = allowedKeyManagers or WifiConfiguration.KeyMgmt.WPA_PSK
else if (preSharedKey.isEmpty())
allowedKeyManagers = allowedAuthAlgos or WifiConfiguration.KeyMgmt.WPA_PSK
config.allowedKeyManagement.set(allowedKeyManagers)
var allowedPairWiseCiphers = WifiConfiguration.PairwiseCipher.NONE
if (pairwiseCipher.contains("CCMP"))
allowedPairWiseCiphers = allowedPairWiseCiphers or WifiConfiguration.PairwiseCipher.CCMP
if (pairwiseCipher.contains("TKIP"))
allowedPairWiseCiphers = allowedPairWiseCiphers or WifiConfiguration.PairwiseCipher.TKIP
config.allowedPairwiseCiphers.set(allowedPairWiseCiphers)
if (preSharedKey.isNotEmpty()) {
if (auth.contains("WEP")) {
if (preSharedKey.matches("\\p{XDigit}+".toRegex())) {
config.wepKeys[0] = preSharedKey
} else {
config.wepKeys[0] = "\"" + preSharedKey + "\""
}
config.wepTxKeyIndex = 0
} else {
config.preSharedKey = "\"" + preSharedKey + "\""
}
}
config
}
/**
* Extension function to remove escaped " from a string
*/
private fun String.unescape() =
if (this.startsWith("\""))
this.replace("\"", "")
else
this回答 1
Stack Overflow用户
回答已采纳
发布于 2018-12-12 18:32:07
好的，我终于明白了这一点，我希望我的答案能为将来遇到类似问题的人提供一些启示，因为这是令人讨厌的，也让我非常头疼。
造成这个问题的根本原因是我错误地配置了WiFiConfig对象，该对象是通过WiFiConfig表通过WiFiConfigManager.addNetwork()注册的。
我对WifiConfigManager.addNetwork()的合同做了大量的假设。我假设如果操作成功(即不返回-1)，则正确配置传递的WiFiConfig。这个假设是错误的，我正在创建的allowedAuthAlgorithms、allowedProtocols、allowedKeyManagers和allowedPairwiseCipher BitSet都是不正确的，但是对addNetwork()的调用成功了。我认为这是因为对addNetwork()的调用实际上只做了验证配置对于放在WiFiConfig表中是有效的，这与验证它是否是给定WiFi访问点的正确配置完全不同。这是由addNetwork()源代码中的注释备份的，这些注释没有像许多其他WiFiManager函数那样声明异步状态的传递，这表明(至少对我来说)操作系统没有试图通过调用addNetwork()来与访问点通信。
由于一位同事提出了一个非常有用的建议，即通过操作系统连接到所讨论的访问点，然后比较为该访问点创建的OS创建的WiFiConfig对象和由我自己的代码生成的用于差异的访问点，因此我注意到我的WiFiConfig配置不正确。在此之后不久，我才解决了原来的问题。
现在，为什么我的WiFiConfig对象被错误地创建了？这是因为我对如何配置WiFi (即所有协议、算法和密钥管理器背后的各种术语和含义)知之甚少。因此，在阅读了官方文档而没有收集到很多有用的信息之后，我转向StackOverflow问答，找到了一种正确设置WiFiConfig的反复模式，他们似乎都使用BitWise操作符创建了一个Int值，最终传递给了WiFiConfig.allowedProtocols.set()、WiFiConfig.allowedPairwiseCiphers.set()、WiFiConfig.allowedKeyManagement.set()和WiFiConfig.allowedAuthAlgorithm.set()函数。
结果表明，每个配置选项的底层BitSet都是一种数据结构，它维护位的动态调整向量，其中WiFiConfig对象中给定BitSet实例中的位索引与WiFiConfig对象内隐式关联的String数组中的元素索引隐式对应。因此，如果希望提供多个protocols、keyManagements、pairwiseCiphers或authAlgorithms，则需要在底层对应的BitSet上调用set，传递与匹配所选协议的隐式关联字符串数组的元素对应的正确索引。
在重写了我的WiFiConfig创建代码之后，这个问题自行解决了。虽然我的代码在最初的文章中有一个错误，但它也被修复了。
下面是新的WiFiConfig创建代码：
/**
* Emits a single of the [WifiConfiguration] created from the passed [scanResult] and [preSharedKey]
*/
private fun createWifiConfiguration(scanResult: WiFiScanResult, preSharedKey: String) = Single.fromCallable<WifiConfiguration> {
val auth = scanResult.auth
val keyManagement = scanResult.keyManagement
val pairwiseCipher = scanResult.pairwiseCipher
val config = WifiConfiguration()
config.SSID = "\"" + scanResult.ssid + "\""
config.BSSID = scanResult.bssid
if (auth.contains("WPA") || auth.contains("WPA2")) {
config.allowedProtocols.set(WifiConfiguration.Protocol.WPA)
config.allowedProtocols.set(WifiConfiguration.Protocol.RSN)
}
if (auth.contains("EAP"))
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.LEAP)
else if (auth.contains("WPA") || auth.contains("WPA2"))
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN)
else if (auth.contains("WEP"))
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED)
if (keyManagement.contains("IEEE802.1X"))
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.IEEE8021X)
else if (auth.contains("WPA") && keyManagement.contains("EAP"))
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP)
else if (auth.contains("WPA") && keyManagement.contains("PSK"))
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK)
else if (auth.contains("WPA2") && keyManagement.contains("PSK"))
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK)
if (pairwiseCipher.contains("CCMP") || pairwiseCipher.contains("TKIP")) {
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP)
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP)
}
if (preSharedKey.isNotEmpty()) {
if (auth.contains("WEP")) {
if (preSharedKey.matches("\\p{XDigit}+".toRegex())) {
config.wepKeys[0] = preSharedKey
} else {
config.wepKeys[0] = "\"" + preSharedKey + "\""
}
config.wepTxKeyIndex = 0
} else {
config.preSharedKey = "\"" + preSharedKey + "\""
}
}
config
}下面是新的连接代码：
/**
* Connects to the wifi access point at specified [ssid] with specified [networkId]
* And returns the [WifiInfo] of the network that has been connected to
*/
private fun connect(context: Context,
wifiManager: WifiManager,
ssid: String,
networkId: Int) = Single.create<WifiInfo> { emitter ->
val wifiConnectionReceiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
if (intent.action == WifiManager.NETWORK_STATE_CHANGED_ACTION) {
val networkInfo = intent.getParcelableExtra<NetworkInfo>(WifiManager.EXTRA_NETWORK_INFO) ?: return
if (networkInfo.detailedState == NetworkInfo.DetailedState.CONNECTED) {
val wifiInfo = intent.getParcelableExtra<WifiInfo>(WifiManager.EXTRA_WIFI_INFO) ?: return
if (ssid.unescape() == wifiInfo.ssid.unescape()) {
context.applicationContext.unregisterReceiver(this)
emitter.onSuccess(wifiInfo)
}
}
}
}
}
val networkStateChangedFilter = IntentFilter(WifiManager.NETWORK_STATE_CHANGED_ACTION)
networkStateChangedFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION)
context.applicationContext.registerReceiver(wifiConnectionReceiver, networkStateChangedFilter)
emitter.setCancellable {
if (!emitter.isDisposed)
context.applicationContext.unregisterReceiver(wifiConnectionReceiver)
}
wifiManager.enableNetwork(networkId, true)
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/53620234
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