Location Services disabled (code 4) even when Location Services are Activated - Android Pen #327

ejbp · 2017-11-26T20:29:10Z

Error:
com.polidea.rxandroidble.exceptions.BleScanException: Location Services disabled (code 4)

Facts:
is in manifest and user accepts the checkSelfPermission.

Double checked:

I double checked it in settings and location services are enabled and the app is allowed to such permission.

Hardware && versions:
[ro.build.version.release]: [7.1.2]
[ro.build.version.sdk]: [25]
[ro.product.board]: [q8723bs]
[ro.product.brand]: [Amlogic]
[ro.product.cpu.abi]: [arm64-v8a]
[ro.product.cpu.abilist]: [arm64-v8a,armeabi-v7a,armeabi]
[ro.product.cpu.abilist32]: [armeabi-v7a,armeabi]
[ro.product.cpu.abilist64]: [arm64-v8a]
[ro.product.device]: [q8723bs]
[ro.product.firmware]: [00502001]
[ro.product.locale]: [en-US]
[ro.product.manufacturer]: [Amlogic]
[ro.product.model]: [H96 PRO]
[ro.product.name]: [q8723bs]

Hardware Link

I can't figure out the reason of this exception. Any idea?

uKL · 2017-11-27T06:59:38Z

Could you make a snippet of code and post what does
locationManager.getAllProviders() will print out?

The library expects either NETWORK_PROVIDER or GPS_PROVIDER.

ejbp · 2017-11-27T09:49:24Z

Result of :

Log.d("BluetoothCommManager", "Providers: " + locationManager.getAllProviders());

is

11-27 09:43:59.023 20336-20336/? D/BluetoothCommManager: Providers: [passive, network]

When I run:

scanSubscription = rxBleClient.scanBleDevices(


                    new ScanSettings.Builder()
                            .setScanMode(ScanSettings.SCAN_MODE_BALANCED)
                            // .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY) // change if needed
                            // .setCallbackType(ScanSettings.CALLBACK_TYPE_ALL_MATCHES) // change if needed
                            .build(),



                    new ScanFilter.Builder().setDeviceName("BTDeviceName").build()


            ).subscribe(

                    scanResult -> {
                        // Process scan result here.

                        Log.d("BluetoothComm", "ScanResult: " + scanResult);

                    },
                    throwable -> {
                        // Handle an error here.
                        Log.d("BluetoothComm", "Bluetooth Scan Error: ");
                        throwable.printStackTrace();
                    }

            );

the result is:

11-27 09:43:59.028 20336-20336/? D/BluetoothComm: Bluetooth Scan Error: 
11-27 09:43:59.028 20336-20336/? W/System.err: com.polidea.rxandroidble.exceptions.BleScanException: Location Services disabled (code 4)
11-27 09:43:59.028 20336-20336/? W/System.err:     at com.polidea.rxandroidble.internal.scan.ScanPreconditionsVerifierApi18.verify(ScanPreconditionsVerifierApi18.java:31)
11-27 09:43:59.028 20336-20336/? W/System.err:     at com.polidea.rxandroidble.internal.scan.ScanPreconditionsVerifierApi24.verify(ScanPreconditionsVerifierApi24.java:38)
11-27 09:43:59.028 20336-20336/? W/System.err:     at com.polidea.rxandroidble.RxBleClientImpl$1.call(RxBleClientImpl.java:114)
11-27 09:43:59.028 20336-20336/? W/System.err:     at com.polidea.rxandroidble.RxBleClientImpl$1.call(RxBleClientImpl.java:111)
11-27 09:43:59.028 20336-20336/? W/System.err:     at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46)
11-27 09:43:59.028 20336-20336/? W/System.err:     at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
11-27 09:43:59.028 20336-20336/? W/System.err:     at rx.Observable.subscribe(Observable.java:10352)
11-27 09:43:59.028 20336-20336/? W/System.err:     at rx.Observable.subscribe(Observable.java:10319)
11-27 09:43:59.028 20336-20336/? W/System.err:     at rx.Observable.subscribe(Observable.java:10159)
11-27 09:43:59.028 20336-20336/? W/System.err:     at com.xxx.comm.bluetooth.BluetoothCommManager.scanDevice(BluetoothCommManager.java:74)


//Log started here:
11-27 09:43:59.028 20336-20336/? W/System.err:     at com.xxx.gui.launcher.PairingScene.start(PairingScene.java:83)
11-27 09:43:59.028 20336-20336/? W/System.err:     at com.xxx.LauncherActivity.onResume(LauncherActivity.java:345)
11-27 09:43:59.028 20336-20336/? W/System.err:     at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1269)
11-27 09:43:59.028 20336-20336/? W/System.err:     at android.app.Activity.performResume(Activity.java:6786)
11-27 09:43:59.028 20336-20336/? W/System.err:     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3407)
11-27 09:43:59.028 20336-20336/? W/System.err:     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3470)
11-27 09:43:59.028 20336-20336/? W/System.err:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2733)
11-27 09:43:59.028 20336-20336/? W/System.err:     at android.app.ActivityThread.-wrap12(ActivityThread.java)
11-27 09:43:59.029 20336-20336/? W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1478)
11-27 09:43:59.029 20336-20336/? W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:102)
11-27 09:43:59.029 20336-20336/? W/System.err:     at android.os.Looper.loop(Looper.java:154)
11-27 09:43:59.029 20336-20336/? W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:6121)
11-27 09:43:59.029 20336-20336/? W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
11-27 09:43:59.029 20336-20336/? W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
11-27 09:43:59.029 20336-20336/? W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
11-27 09:43:59.035 20336-20368/? W/System: ClassLoader referenced unknown path: /data/user_de/0/com.google.android.gms/app_chimera/m/0000000e/n/arm64-v8a

uKL · 2017-11-27T09:56:31Z

Please share:

locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);

Also, what is your target SDK?

ejbp · 2017-11-27T10:09:04Z

Configuration:

compileSdkVersion 26
    //buildToolsVersion '26.0.2'
    buildToolsVersion '26.0.2'
    flavorDimensions "default"
    defaultConfig {
        applicationId "com.xxx"
        minSdkVersion 21
        targetSdkVersion 26
        versionCode 0
        versionName "0.2.8"
        multiDexEnabled true
    }

note: I've recently upgraded to 26 but I've tested before with 25 which was giving the same error.

I've changed the request permission from ACCESS_COARSE_LOCATION to ACCESS_FINE_LOCATION but it stills gives the same error.

Log.d("BluetoothCommManager", "Providers: " + locationManager.getAllProviders());
Log.d("BluetoothCommManager", "isProviderEnabled (Network): " + locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (GPS): " + locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER));


11-27 10:00:25.993 21028-21028/? D/BluetoothCommManager: Providers: [passive, network]
11-27 10:00:25.994 21028-21028/? D/BluetoothCommManager: isProviderEnabled (Network): false
11-27 10:00:25.994 21028-21028/? D/BluetoothCommManager: isProviderEnabled (GPS): false

11-27 10:00:26.003 21028-21028/? D/BluetoothComm: Bluetooth Scan Error: 
11-27 10:00:26.003 21028-21028/? W/System.err: com.polidea.rxandroidble.exceptions.BleScanException: Location Services disabled (code 4)
11-27 10:00:26.003 21028-21028/? W/System.err:     at com.polidea.rxandroidble.internal.scan.ScanPreconditionsVerifierApi18.verify(ScanPreconditionsVerifierApi18.java:31)
11-27 10:00:26.003 21028-21028/? W/System.err:     at com.polidea.rxandroidble.internal.scan.ScanPreconditionsVerifierApi24.verify(ScanPreconditionsVerifierApi24.java:38)
11-27 10:00:26.003 21028-21028/? W/System.err:     at com.polidea.rxandroidble.RxBleClientImpl$1.call(RxBleClientImpl.java:114)

dariuszseweryn · 2017-11-27T10:11:16Z

In the case of this dongle none of the network or gps providers seems to be available. Could you check for the ~~fused and~~ passive?

    /**
     * Name of the network location provider.
     * <p>This provider determines location based on
     * availability of cell tower and WiFi access points. Results are retrieved
     * by means of a network lookup.
     */
    public static final String NETWORK_PROVIDER = "network";

    /**
     * Name of the GPS location provider.
     *
     * <p>This provider determines location using
     * satellites. Depending on conditions, this provider may take a while to return
     * a location fix. Requires the permission
     * {@link android.Manifest.permission#ACCESS_FINE_LOCATION}.
     *
     * <p> The extras Bundle for the GPS location provider can contain the
     * following key/value pairs:
     * <ul>
     * <li> satellites - the number of satellites used to derive the fix
     * </ul>
     */
    public static final String GPS_PROVIDER = "gps";

    /**
     * A special location provider for receiving locations without actually initiating
     * a location fix.
     *
     * <p>This provider can be used to passively receive location updates
     * when other applications or services request them without actually requesting
     * the locations yourself.  This provider will return locations generated by other
     * providers.  You can query the {@link Location#getProvider()} method to determine
     * the origin of the location update. Requires the permission
     * {@link android.Manifest.permission#ACCESS_FINE_LOCATION}, although if the GPS is
     * not enabled this provider might only return coarse fixes.
     */
    public static final String PASSIVE_PROVIDER = "passive";

    /**
     * Name of the Fused location provider.
     *
     * <p>This provider combines inputs for all possible location sources
     * to provide the best possible Location fix. It is implicitly
     * used for all API's that involve the {@link LocationRequest}
     * object.
     *
     * @hide
     */
    public static final String FUSED_PROVIDER = "fused";

uKL · 2017-11-27T10:15:11Z

It's strange because in the menu you have "Device only" which corresponds to GPS, not the network.

In available providers though, you have only "passive" and "network".

What are your options when you press "MODE"?

ejbp · 2017-11-27T10:44:21Z

Ok, so without any change on the configuration the result of:

Log.d("BluetoothCommManager", "Providers: " + locationManager.getAllProviders());
Log.d("BluetoothCommManager", "isProviderEnabled (Network): " + locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (GPS): " + locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (PASSIVE_PROVIDER): " + locationManager.isProviderEnabled(LocationManager.PASSIVE_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (FUSED_PROVIDER): " + locationManager.isProviderEnabled("fused"));

is

11-27 10:21:14.334 21756-21756/? D/BluetoothCommManager: Providers: [passive, network]
11-27 10:21:14.335 21756-21756/? D/BluetoothCommManager: isProviderEnabled (Network): false
11-27 10:21:14.335 21756-21756/? D/BluetoothCommManager: isProviderEnabled (GPS): false
11-27 10:21:14.336 21756-21756/? D/BluetoothCommManager: isProviderEnabled (PASSIVE_PROVIDER): true
11-27 10:21:14.336 21756-21756/? D/BluetoothCommManager: isProviderEnabled (FUSED_PROVIDER): false

Now, changing mode from device (which was the default) to High Accuracy, the result is:

11-27 10:32:15.011 22157-22157/? D/BluetoothCommManager: Providers: [passive, network]
11-27 10:32:15.012 22157-22157/? D/BluetoothCommManager: isProviderEnabled (Network): true
11-27 10:32:15.012 22157-22157/? D/BluetoothCommManager: isProviderEnabled (GPS): false
11-27 10:32:15.012 22157-22157/? D/BluetoothCommManager: isProviderEnabled (PASSIVE_PROVIDER): true
11-27 10:32:15.013 22157-22157/? D/BluetoothCommManager: isProviderEnabled (FUSED_PROVIDER): false

And now it's working, meaning that I receive the ScanResults.

My question now is if this condition (about the providers) is really necessary cause, if permission ACCESS_COARSE_LOCATION is allowed, even with mode in "device" mode, the scan works. I know this cause I've tested to do it directly (with the android libs). This is will force to request the user to change this, which is one more barrier to use the app (or even not be able to use if it's a basic user).

Looking forward for your thoughts. Anyway, thank you very much for your help and the Lib :).

uKL · 2017-11-27T10:49:07Z

It looks like your provider settings are reversed.

"High accuracy" should enable GPS
"Device only" should enable coarse location (network).

Enabling location is required only in certain scenarios where:

You are not an Android Wear device
Your target and device SDK is >= Android M

This is to control user's privacy better (you're getting device MAC address, which you can use as a location tip).

ejbp · 2017-11-27T10:52:05Z

"This is to control user's privacy better (you're getting device MAC address, which you can use as a location tip)."

Yes, I understand it. What I'm saying is that, using android libs, when I'm in device mode I also receive the ScanResult (Name of device + Mac address).

But, you're probably right, it may be a device provider issue on this.

Thanks for your help.

Best

uKL · 2017-11-27T11:01:44Z

This is to be considered if verification should be a configuration parameter for a scan. @dariuszseweryn What do you think?

dariuszseweryn · 2017-11-27T11:13:20Z

That is a good idea.
I think that we should also extend CheckerLocationProvider with the LocationManager.PASSIVE_PROVIDER check. It is not documented anywhere but so far it seems that it does not matter which provider is available if the user switched on Location Services.

uKL · 2017-11-27T11:14:24Z

Not sure, AFAIK you cannot disable "passive" at all from a menu setting.

dariuszseweryn · 2017-11-27T11:20:51Z

@ejbp Could you check the above?
Could you run all location provider checks when the Location Services setting if off?

ejbp · 2017-11-27T11:29:33Z

Result:


Log.d("BluetoothCommManager", "Providers: " + locationManager.getAllProviders());
Log.d("BluetoothCommManager", "isProviderEnabled (Network): " + locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (GPS): " + locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (PASSIVE_PROVIDER): " + locationManager.isProviderEnabled(LocationManager.PASSIVE_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (FUSED_PROVIDER): " + locationManager.isProviderEnabled("fused"));


11-27 11:27:42.452 24704-24704/? D/BluetoothCommManager: Providers: [passive, network]
11-27 11:27:42.453 24704-24704/? D/BluetoothCommManager: isProviderEnabled (Network): false
11-27 11:27:42.453 24704-24704/? D/BluetoothCommManager: isProviderEnabled (GPS): false
11-27 11:27:42.454 24704-24704/? D/BluetoothCommManager: isProviderEnabled (PASSIVE_PROVIDER): true
11-27 11:27:42.454 24704-24704/? D/BluetoothCommManager: isProviderEnabled (FUSED_PROVIDER): false
11-27 11:27:42.459 24704-24704/? D/BluetoothComm: Bluetooth Scan Error: 
11-27 11:27:42.459 24704-24704/? W/System.err: com.polidea.rxandroidble.exceptions.BleScanException: Location Services disabled (code 4)
11-27 11:27:42.460 24704-24704/? W/System.err:     at com.polidea.rxandroidble.internal.scan.ScanPreconditionsVerifierApi18.verify(ScanPreconditionsVerifierApi18.java:31)
11-27 11:27:42.460 24704-24704/? W/System.err:     at com.polidea.rxandroidble.internal.scan.ScanPreconditionsVerifierApi24.verify(ScanPreconditionsVerifierApi24.java:38)
11-27 11:27:42.460 24704-24704/? W/System.err:     at com.polidea.rxandroidble.RxBleClientImpl$1.call(RxBleClientImpl.java:114)
11-27 11:27:42.460 24704-24704/? W/System.err:     at com.polidea.rxandroidble.RxBleClientImpl$1.call(RxBleClientImpl.java:111)
11-27 11:27:42.460 24704-24704/? W/Syste

dariuszseweryn · 2017-12-28T15:06:54Z

Hello @ejbp

I have another trace on what could work for your case. Would you be so kind and check what does
Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE) return when your location is being switched on and off?

dariuszseweryn · 2018-01-04T16:49:14Z

@ejbp Ping? :)
The above info could potentially fix your use case but I would need to confirm that it works as I assume and I do not have access to the same Android Pen.

P.S. Happy New Year!

ejbp · 2018-01-04T16:51:05Z

Sorry Darius. I was off during some days and I missed your post. I will try to answer asap.

ejbp · 2018-01-05T11:59:29Z

##Value for Device Only
Debugger for Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): value = 1

##Value for Battery Saving
Debugger for Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): value = 2

##Value for High Accuracy
Debugger for Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): value = 3

Let me know if you need any further debug.

dariuszseweryn · 2018-01-05T12:36:34Z

You have written that you have three different values. Which one corresponds to when the Location (as shown is this picture) is switched on and which for off?

ejbp · 2018-01-05T13:10:19Z

##When location is on && setting is Device Only
Debugger for Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): value = 1

##When location is on && setting is Battery Saving
Debugger for Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): value = 2

##When location is on && setting is High Accuracy
Debugger for Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): value = 3

##When location is off
Debugger for Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): value = 0

dariuszseweryn · 2018-01-05T14:16:29Z

I think we have a winner. Could you just repeat the below test:

Log.d("BluetoothCommManager", "Providers: " + locationManager.getAllProviders());
Log.d("BluetoothCommManager", "isProviderEnabled (Network): " + locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (GPS): " + locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (PASSIVE_PROVIDER): " + locationManager.isProviderEnabled(LocationManager.PASSIVE_PROVIDER));
Log.d("BluetoothCommManager", "isProviderEnabled (FUSED_PROVIDER): " + locationManager.isProviderEnabled("fused"));

for all cases from your above post? I would like to have those for comparison. Thank you 👍

ejbp · 2018-01-05T16:00:17Z

Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): 1
--------------
Providers: [passive, network]
isProviderEnabled (Network): false
isProviderEnabled (GPS): false
isProviderEnabled (PASSIVE_PROVIDER): true
isProviderEnabled (FUSED_PROVIDER): false

Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): 2
--------------
Providers: [passive, network]
isProviderEnabled (Network): true
isProviderEnabled (GPS): false
isProviderEnabled (PASSIVE_PROVIDER): true
isProviderEnabled (FUSED_PROVIDER): false

Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): 3
--------------
Providers: [passive, network]
sProviderEnabled (Network): true
isProviderEnabled (GPS): false
isProviderEnabled (PASSIVE_PROVIDER): true
isProviderEnabled (FUSED_PROVIDER): false

Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE): 0
--------------
Providers: [passive, network]
isProviderEnabled (Network): false
isProviderEnabled (GPS): false
isProviderEnabled (PASSIVE_PROVIDER): true
isProviderEnabled (FUSED_PROVIDER): false

dariuszseweryn · 2018-01-05T16:03:23Z

Perfect! Thank you—your use-case should be addressed in 1.5.0 release :) 👍

As it turned out it is possible to detect what is the current status of the Location even on devices that are not phones.

dariuszseweryn · 2018-01-10T09:10:11Z

@ejbp this is already fixed in the 1.5.0-SNAPSHOT. Thank you for the help!

ejbp · 2018-01-10T11:08:11Z

Thanks @dariuszseweryn . You're guys are the best. Looking forward to have the release notes and available to import into gradle.

dariuszseweryn · 2018-01-10T11:18:12Z

The official release should happen quite soon. In the meantime you can checkout the 1.5.0-SNAPSHOT

dariuszseweryn added the awaiting feedback label Nov 27, 2017

uKL self-assigned this Nov 27, 2017

uKL added the bug-model specific Bug that is caused by a flawed, model specific BLE stack implementation label Nov 27, 2017

dariuszseweryn added enhancement and removed awaiting feedback labels Jan 5, 2018

dariuszseweryn added the good first issue label Jan 5, 2018

dariuszseweryn added a commit that referenced this issue Jan 5, 2018

Changed resolving Location Services status (closes #327)

2230a6d

As it turned out it is possible to detect what is the current status of the Location even on devices that are not phones.

dariuszseweryn added this to the 1.5.0 milestone Jan 5, 2018

dariuszseweryn closed this as completed in 5b54727 Jan 10, 2018

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Location Services disabled (code 4) even when Location Services are Activated - Android Pen #327

Location Services disabled (code 4) even when Location Services are Activated - Android Pen #327

ejbp commented Nov 26, 2017

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Location Services disabled (code 4) even when Location Services are Activated - Android Pen #327

Location Services disabled (code 4) even when Location Services are Activated - Android Pen #327

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