连接到Wifi Android Q [英] Connect To Wifi Android Q
本文介绍了连接到Wifi Android Q的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试使用以下代码连接wifi
I'm trying to connect to wifi with below code
val specifier = WifiNetworkSpecifier.Builder()
.setSsid(machineID).build()
val networkRequest = NetworkRequest.Builder()
.addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
.setNetworkSpecifier(specifier)
.build()
val connectivityManager = context.applicationContext
.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?
connectivityManager?.requestNetwork(networkRequest,object:ConnectivityManager.NetworkCallback(){
override fun onUnavailable() {
callback.onWifiConnected(WifiConstant.WIFI_IP_ADDRESS_INVALID)
}
override fun onAvailable(network: Network) {
val wifiInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
if (wifiInfo.isConnected)
callback.onWifiConnected("${getWifiManager()?.connectionInfo?.ipAddress!!}")
else
callback.onWifiConnected(WifiConstant.WIFI_IP_ADDRESS_INVALID)
}
})
但是我总是在这一行中遇到运行时错误
But I'm always getting runtime error in this line
val specifier = WifiNetworkSpecifier.Builder()
错误如下:
2019-09-25 13:49:00.718 28556-28556/com.aloha.asiaiot E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.aloha.asiaiot, PID: 28556
java.lang.NoClassDefFoundError: Failed resolution of: Landroid/net/wifi/WifiNetworkSpecifier$Builder;
at com.aloha.asiaiot.common.util.wifi.WifiConnectionManager.connectToWifi(WifiConnectionManager.kt:77)
at com.aloha.asiaiot.connectivity.devicescan.data.DeviceScanNetworkRepository.connectToWifi(DeviceScanNetworkRepository.kt:48)
at com.aloha.asiaiot.connectivity.devicescan.domain.DeviceScanRepository.connectToWifi(DeviceScanRepository.kt:18)
at com.aloha.asiaiot.connectivity.devicescan.domain.DeviceScanUseCase.connectToWifi(DeviceScanUseCase.kt:18)
at com.aloha.asiaiot.connectivity.devicescan.presentation.viewmodel.DeviceScanViewModel.connectToWifi(DeviceScanViewModel.kt:41)
at com.aloha.asiaiot.connectivity.devicescan.presentation.DeviceScanFragment.connectToGateway(DeviceScanFragment.kt:139)
at com.aloha.asiaiot.connectivity.devicescan.presentation.DeviceScanFragment.access$connectToGateway(DeviceScanFragment.kt:29)
at com.aloha.asiaiot.connectivity.devicescan.presentation.DeviceScanFragment$onActivityCreated$3.onClick(DeviceScanFragment.kt:72)
at android.view.View.performClick(View.java:7339)
at android.widget.TextView.performClick(TextView.java:14221)
at android.view.View.performClickInternal(View.java:7305)
at android.view.View.access$3200(View.java:846)
at android.view.View$PerformClick.run(View.java:27787)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7058)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.net.wifi.WifiNetworkSpecifier$Builder" on path: DexPathList[[zip file "/data/app/com.aloha.asiaiot-k57tcS1ybEKsaCIu13TJnw==/base.apk"],nativeLibraryDirectories=[/data/app/com.aloha.asiaiot-k57tcS1ybEKsaCIu13TJnw==/lib/arm64, /system/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at com.aloha.asiaiot.common.util.wifi.WifiConnectionManager.connectToWifi(WifiConnectionManager.kt:77)
at com.aloha.asiaiot.connectivity.devicescan.data.DeviceScanNetworkRepository.connectToWifi(DeviceScanNetworkRepository.kt:48)
at com.aloha.asiaiot.connectivity.devicescan.domain.DeviceScanRepository.connectToWifi(DeviceScanRepository.kt:18)
at com.aloha.asiaiot.connectivity.devicescan.domain.DeviceScanUseCase.connectToWifi(DeviceScanUseCase.kt:18)
at com.aloha.asiaiot.connectivity.devicescan.presentation.viewmodel.DeviceScanViewModel.connectToWifi(DeviceScanViewModel.kt:41)
at com.aloha.asiaiot.connectivity.devicescan.presentation.DeviceScanFragment.connectToGateway(DeviceScanFragment.kt:139)
at com.aloha.asiaiot.connectivity.devicescan.presentation.DeviceScanFragment.access$connectToGateway(DeviceScanFragment.kt:29)
at com.aloha.asiaiot.connectivity.devicescan.presentation.DeviceScanFragment$onActivityCreated$3.onClick(DeviceScanFragment.kt:72)
at android.view.View.performClick(View.java:7339)
at android.widget.TextView.performClick(TextView.java:14221)
at android.view.View.performClickInternal(View.java:7305)
at android.view.View.access$3200(View.java:846)
at android.view.View$PerformClick.run(View.java:27787)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7058)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)
2019-09-25 13:49:00.747 28556-28556/com.aloha.asiaiot
2019-09-25 13:49:00.747 28556-28556/com.aloha.asiaiot
我还尝试了以下代码来解决较低的SDK:
I tried also with below code for solving lower SDK :
if (Build.VERSION.SDK_INT< Build.VERSION_CODES.Q) {
val wifiConfiguration = WifiConfiguration()
wifiConfiguration.SSID = String.format("\"%s\"", machineID)
wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE)
wifiConfiguration.status = WifiConfiguration.Status.ENABLED
wifiConfiguration.priority = 40
val wifiManager = getWifiManager()
val netID = wifiManager?.addNetwork(wifiConfiguration)!!
wifiManager.disconnect()
wifiManager.enableNetwork(netID,true)
wifiManager.reconnect()
if (isWifiConnected(machineID))
callback.onWifiConnected("${wifiManager.dhcpInfo.ipAddress}")
else
callback.onWifiConnected(WifiConstant.WIFI_IP_ADDRESS_INVALID)
}
并在我的isWifiConnected下面:
and below my isWifiConnected :
private fun isWifiConnected (machineID: String) : Boolean{
if (getWifiManager()?.isWifiEnabled!!) {
val wifiInfo = getWifiManager()?.connectionInfo
if (wifiInfo?.ssid==machineID)
return true
}
return false
}
但是在这一部分，我总是错误的:
But in this part I always getting false :
wifiManager.disconnect()
wifiManager.enableNetwork(netID,true)
wifiManager.reconnect()
按照文档中的说明:
此方法在API级别29中已弃用.a)有关触发与Wi-Fi网络的连接的新机制，请参见WifiNetworkSpecifier.Builder#build().b)有关新的API，请参见addNetworkSuggestions(java.util.List)，removeNetworkSuggestions(java.util.List)，以添加Wi-Fi网络，以便在自动连接到wifi时考虑.兼容性说明:对于面向Build.VERSION_CODES.Q或更高版本的应用程序，此API始终返回false .
我正在OS 9版本的真实设备中进行测试，但是代码在模拟器中运行良好.请告知可能的原因.谢谢您的帮助.
I'm testing in real device with OS version 9. But code running fine in emulator. Kindly advise what is possible cause. Thank you for any kind help.
推荐答案
这是我的代码:
val wifiManager = applicationContext.getSystemService(WIFI_SERVICE) as WifiManager?
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
try {
val wifiConfig = WifiConfiguration()
wifiConfig.SSID = "\"" + yourSsid + "\""
wifiConfig.preSharedKey = "\"" + password + "\""
val netId = wifiManager!!.addNetwork(wifiConfig)
wifiManager.disconnect()
wifiManager.enableNetwork(netId, true)
wifiManager.reconnect()
if (isWifiConnected("\"" + deviceId + "\"")) {
doSomethingHere()
}
} catch (e: Exception) {
e.printStackTrace()
}
} else {
val wifiNetworkSpecifier = WifiNetworkSpecifier.Builder()
.setSsid( yourSsid!! )
.setWpa2Passphrase(password)
.build()
val networkRequest = NetworkRequest.Builder()
.addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
.setNetworkSpecifier(wifiNetworkSpecifier)
.build()
connectivityManager = Boron.instance.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?
networkCallback = object : ConnectivityManager.NetworkCallback() {
override fun onUnavailable() {
super.onUnavailable()
}
override fun onLosing(network: Network, maxMsToLive: Int) {
super.onLosing(network, maxMsToLive)
}
override fun onAvailable(network: Network) {
super.onAvailable(network)
connectivityManager?.bindProcessToNetwork(network)
}
override fun onLost(network: Network) {
super.onLost(network)
}
}
connectivityManager?.requestNetwork(networkRequest,networkCallback)
}
然后进入onDestroyConnectivityManager?.unregisterNetworkCallback(networkCallback)
Then in onDestroy connectivityManager?.unregisterNetworkCallback(networkCallback)
所需权限:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-feature android:name="android.permission.WRITE_SETTINGS"
android:required="false"/>
这篇关于连接到Wifi Android Q的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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