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到 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("${getWifiManager()?.connectionInfo?.ipAddress!!}")
else
callback.onWifiConnected(WifiConstant.WIFI_IP_ADDRESS_INVALID)
}
})
但我总是在这一行遇到运行时错误
But I'm always getting runtime error in this line
val specifier = WifiNetworkSpecifier.Builder()
错误如下:
2019-09-25 13:49:00.718 28556-28556/com.aloha.asiaiot E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.aloha.asiaiot, PID: 28556
java.lang.NoClassDefFoundError: Failed resolution of: Landroid/net/wifi/WifiNetworkSpecifier$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$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)
2019-09-25 13:49:00.747 28556-28556/com.aloha.asiaiot
2019-09-25 13:49:00.747 28556-28556/com.aloha.asiaiot
我也尝试使用以下代码来解决较低的 SDK:
I tried also with below code for solving lower SDK :
if (Build.VERSION.SDK_INT< Build.VERSION_CODES.Q) {
val wifiConfiguration = WifiConfiguration()
wifiConfiguration.SSID = String.format(""%s"", machineID)
wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE)
wifiConfiguration.status = WifiConfiguration.Status.ENABLED
wifiConfiguration.priority = 40
val wifiManager = getWifiManager()
val netID = wifiManager?.addNetwork(wifiConfiguration)!!
wifiManager.disconnect()
wifiManager.enableNetwork(netID,true)
wifiManager.reconnect()
if (isWifiConnected(machineID))
callback.onWifiConnected("${wifiManager.dhcpInfo.ipAddress}")
else
callback.onWifiConnected(WifiConstant.WIFI_IP_ADDRESS_INVALID)
}
和下面我的 isWifiConnected :
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
}
但在这部分我总是弄错:
But in this part I always getting false :
wifiManager.disconnect()
wifiManager.enableNetwork(netID,true)
wifiManager.reconnect()
根据文档说明:
此方法已在 API 级别 29 中弃用.a) 请参阅 WifiNetworkSpecifier.Builder#build() 以了解触发连接到 Wi-Fi 网络的新机制.b) 请参阅 addNetworkSuggestions(java.util.List)、removeNetworkSuggestions(java.util.List) 以获取新 API，以在自动连接到 wifi 时考虑添加 Wi-Fi 网络.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 将始终返回 false.
This method was deprecated in API level 29. a) See WifiNetworkSpecifier.Builder#build() for new mechanism to trigger connection to a Wi-Fi network. b) See addNetworkSuggestions(java.util.List), removeNetworkSuggestions(java.util.List) for new API to add Wi-Fi networks for consideration when auto-connecting to wifi. Compatibility Note: For applications targeting Build.VERSION_CODES.Q or above, this API will always return false.
我正在使用 OS 版本 9 的真实设备进行测试.但代码在模拟器中运行良好.请告知可能的原因.感谢您的任何帮助.
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
This is my code :
This is my code :
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)
}
然后在onDestroy连接管理器?.unregisterNetworkCallback(networkCallback)
Then in onDestroy connectivityManager?.unregisterNetworkCallback(networkCallback)
需要的权限:
<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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