While Scanning available wifi getting exception - java.lang.IllegalStateException: Reply already submitted
996
The WifiManager.startScan() usage is limited to 4 scans every 2 minutes. - All background apps combined are restricted to one scan every 30 minutes."
Please check that are you calling for WifiManager.startScan() more than four times in the duration of 2 minutes.
Reference link: https://developer.android.com/guide/topics/connectivity/wifi-scan#wifi-scan-throttling
Comments
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Dhaval Kansara over 1 year
While I am requesting for the available wifi list in the network using wifi getting below exception.
Exception:
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)Code:
Future<List<WifiResult>> getAvailableWifi() async { List<WifiResult> filteredList = []; bool match = true; return Wifi.list(''); List<WifiResult> wifis = await Wifi.list(''); return wifis; } -
Dhaval Kansara about 4 yearsThanks for the answer. It helps me and actually, I was requesting more than 4 times for startScan.