No beacon found on Android 9 (Nokia 6.1+)

[wolfag]

I used another phone to broacast beacon signal (Beacon Simulator). And use your example code to catch. But nothing appear on log. Please help me.
The example repo here: https://github.com/wolfag/demo_beacon

Thanks

[nicholasc]

Hi @wolfag,

I realized that bluetooth requires location permission and that in order to discover devices you need the bluetooth admin permission. I have gone ahead and commited changes that should fix this in master. It seems to work fine on my side. Can you test it before I got ahead and close this and publish a new version.

You'll need to add this to your AndroidManifest.xml file:

<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Thank you!

[wolfag]

I will notify you after testing.

Thank you!

[wolfag]

Hi @nicholasc ,
I got this error on android:
2019-12-04 17:02:00.035 2505-2758/? E/ViewRootImpl: Accessibility content change on non-UI thread. Future Android versions will throw an exception. android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. at android.view.ViewRootImpl$SendWindowContentChangedAccessibilityEvent.runOrPost(ViewRootImpl.java:8428) at android.view.ViewRootImpl.postSendWindowContentChangedCallback(ViewRootImpl.java:7513) at android.view.ViewRootImpl.notifySubtreeAccessibilityStateChanged(ViewRootImpl.java:7696) at android.view.ViewGroup.notifySubtreeAccessibilityStateChanged(ViewGroup.java:3675) at android.view.ViewGroup.notifySubtreeAccessibilityStateChanged(ViewGroup.java:3675) at android.view.ViewGroup.notifySubtreeAccessibilityStateChanged(ViewGroup.java:3675) at android.view.ViewGroup.notifySubtreeAccessibilityStateChanged(ViewGroup.java:3675) at android.view.ViewGroup.notifySubtreeAccessibilityStateChanged(ViewGroup.java:3675) at android.view.ViewGroup.notifySubtreeAccessibilityStateChanged(ViewGroup.java:3675) at android.view.ViewGroup.notifySubtreeAccessibilityStateChanged(ViewGroup.java:3675) at android.view.View.notifyViewAccessibilityStateChangedIfNeeded(View.java:11953) at android.view.View.setContentDescription(View.java:9165) at com.android.systemui.keyguard.glance.clockstyle.AnalogClock.updateContentDescription(AnalogClock.java:255) at com.android.systemui.keyguard.glance.clockstyle.AnalogClock.onTimeChanged(AnalogClock.java:235) at com.android.systemui.keyguard.glance.clockstyle.AnalogClock.access$200(AnalogClock.java:47) at com.android.systemui.keyguard.glance.clockstyle.AnalogClock$1.onReceive(AnalogClock.java:245) at com.android.systemui.fih.utils.SystemUIUpdateMonitor$5.run(SystemUIUpdateMonitor.java:1423) at android.os.Handler.handleCallback(Handler.java:874) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:198) at android.os.HandlerThread.run(HandlerThread.java:65)

2019-12-04 17:02:00.490 28092-28158/com.transistorsoft.backgroundgeolocation.react E/olocation.reac: No implementation found for com.facebook.react.bridge.Inspector com.facebook.react.bridge.Inspector.instance() (tried Java_com_facebook_react_bridge_Inspector_instance and Java_com_facebook_react_bridge_Inspector_instance__) 2019-12-04 17:02:00.496 28092-28158/com.transistorsoft.backgroundgeolocation.react E/unknown:ReactNative: Inspector doesn't work in open source yet java.lang.UnsatisfiedLinkError: No implementation found for com.facebook.react.bridge.Inspector com.facebook.react.bridge.Inspector.instance() (tried Java_com_facebook_react_bridge_Inspector_instance and Java_com_facebook_react_bridge_Inspector_instance__) at com.facebook.react.bridge.Inspector.instance(Native Method) at com.facebook.react.bridge.Inspector.getPages(Inspector.java:27) at com.facebook.react.devsupport.InspectorPackagerConnection.getPages(InspectorPackagerConnection.java:152) at com.facebook.react.devsupport.InspectorPackagerConnection.handleProxyMessage(InspectorPackagerConnection.java:72) at com.facebook.react.devsupport.InspectorPackagerConnection$Connection.onMessage(InspectorPackagerConnection.java:223) at okhttp3.internal.ws.RealWebSocket.onReadMessage(RealWebSocket.java:323) at okhttp3.internal.ws.WebSocketReader.readMessageFrame(WebSocketReader.java:219) at okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:105) at okhttp3.internal.ws.RealWebSocket.loopReader(RealWebSocket.java:274) at okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:214) at okhttp3.RealCall$AsyncCall.execute(RealCall.java:206) at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:764)

Please help me.
Thank you.

[nicholasc]

Hey @wolfag,

I'm afraid I cannot be much help debugging this since the error you are getting does not seem to be related to the Eddystone library and I do not possess a Nokia 6.1+.

If you google No implementation found for com.facebook.react.bridge.Inspector, you should be able to find several helpful links such as this one or this one.

Hope that helps!

[pm5]

Hello. I bumped into the same problem on Android 10 (Pixel 3a). These are the steps I took:

1. Clone https://github.com/wolfag/demo_beacon
2. Add permission per No beacon found on Android 9 (Nokia 6.1+) #8 (comment)
3. Run demo_beacon and being asked to allow Location permission; allow only while app is in use.
4. Nothing appears on the log.

I didn't see the error in #8 (comment) so that might be caused by other issues.

[pm5]

Oh, but it works on another demo app I made previously. Apparently that demo app was explicitly forbidden to use Location, maybe some time ago. Once I changed its Location permission it starts working.

[JaioSkura]

Hi! I added permissions in manifest but still can't scan beacons. Is there anything else I must do?

[gaurav-naik]

@JaioSkura

Ensure that your AndroidManifest.xml has the following permissions

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION"/>
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

If your phone is running Android 10, the ACCESS_FINE_LOCATION must be included.

[JaioSkura]

Thanks for the response @gaurav-naik . I have that in android manifest, but I don't can't get any result on scan. If I download compileSdkVersion to 28 it works perfect, but with 29 or 30 doesn't. Any help?
By the way, does this app require all those permissions because of something? I only want to find beacons in foreground, so with ACCESS_COARSE_LOCATION should be enought, isn't it?
I am using other bluetooth libraries in other project and work right with only COARSE, for foreground.
Any clue of what is happening here?

[feerposser]

Same issue here. No beacons showing in the logs.
RN: 0.63.3
All permissions set

[feerposser]

I solved the problem!
Talking with a friend from master degree I realize that the project need to ask explicity permission to the user. I just get the docs from RN (https://reactnative.dev/docs/permissionsandroid) and set the ACCESS_FINE_LOCATION on my constructor and everything runs fine (: