扫描可用wifi时获取异常-java.lang.IllegalStateException:答复已提交

当我使用“获取以下例外”请求网络中的可用wifi列表时

异常：

E/MethodChannel#plugins.ly.com/wifi(29023): Failed to handle method call
E/MethodChannel#plugins.ly.com/wifi(29023): java.lang.IllegalStateException: Reply already submitted
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.dart.DartMessenger$Reply.reply(DartMessenger.java:151)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler$1.error(MethodChannel.java:230)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.finishWithError(WifiDelegate.java:341)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.finishWithAlreadyActiveError(WifiDelegate.java:337)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.getWifiList(WifiDelegate.java:172)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiPlugin.onMethodCall(WifiPlugin.java:58)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:222)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:96)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:656)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.MessageQueue.next(MessageQueue.java:336)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.Looper.loop(Looper.java:174)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.app.ActivityThread.main(ActivityThread.java:7356)
E/MethodChannel#plugins.ly.com/wifi(29023):     at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/flutter (29023): PlatformException(error, Reply already submitted, null)
E/MethodChannel#plugins.ly.com/wifi(29023): Failed to handle method call
E/MethodChannel#plugins.ly.com/wifi(29023): java.lang.IllegalStateException: Reply already submitted
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.dart.DartMessenger$Reply.reply(DartMessenger.java:151)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler$1.error(MethodChannel.java:230)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.finishWithError(WifiDelegate.java:341)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.finishWithAlreadyActiveError(WifiDelegate.java:337)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.getWifiList(WifiDelegate.java:172)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiPlugin.onMethodCall(WifiPlugin.java:58)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:222)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:96)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:656)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.MessageQueue.next(MessageQueue.java:336)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.Looper.loop(Looper.java:174)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.app.ActivityThread.main(ActivityThread.java:7356)
E/MethodChannel#plugins.ly.com/wifi(29023):     at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/flutter (29023): PlatformException(error, Reply already submitted, null)
E/MethodChannel#plugins.ly.com/wifi(29023): Failed to handle method call
E/MethodChannel#plugins.ly.com/wifi(29023): java.lang.IllegalStateException: Reply already submitted
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.dart.DartMessenger$Reply.reply(DartMessenger.java:151)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler$1.error(MethodChannel.java:230)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.finishWithError(WifiDelegate.java:341)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.finishWithAlreadyActiveError(WifiDelegate.java:337)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiDelegate.getWifiList(WifiDelegate.java:172)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.ly.wifi.WifiPlugin.onMethodCall(WifiPlugin.java:58)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:222)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:96)
E/MethodChannel#plugins.ly.com/wifi(29023):     at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:656)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.MessageQueue.next(MessageQueue.java:336)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.os.Looper.loop(Looper.java:174)
E/MethodChannel#plugins.ly.com/wifi(29023):     at android.app.ActivityThread.main(ActivityThread.java:7356)
E/MethodChannel#plugins.ly.com/wifi(29023):     at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/MethodChannel#plugins.ly.com/wifi(29023):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/flutter (29023): PlatformException(error, Reply already submitted, null)

代码：

Future<List<WifiResult>> getAvailableWifi() async {
List<WifiResult> filteredList = [];
bool match = true;

return Wifi.list('');
List<WifiResult> wifis =  await Wifi.list('');
return wifis;
}

Future getAvailableWifi（）异步{
列表过滤器列表=[]；
布尔匹配=真；
返回Wifi.list（“”）；
List Wifi=等待Wifi。List（“”）；
返回WIFI；
}

WifiManager.startScan（）的使用限制为每2分钟扫描4次。-所有后台应用程序的组合限制为每30分钟扫描一次。”

请检查您是否在2分钟内呼叫

WifiManager.startScan（）

超过四次

---

参考链接：

谢谢你的回答。这对我很有帮助，事实上，我已经为startScan申请了4次以上。