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When rapidly switching between my map-fragment and any other fragment "Fatal signal 11 (SIGSEGV)" occurs and the app crashes. I have read that this error is related to a library function issue and I am guessing it has something to do with the function in my onConnected() method, hence the Log message. Any help on how to resolve the issue is appreciated, thank you.

Relevant code:
@SuppressWarnings("MissingPermission")
override fun onStart() {
    val settings = context?.getSharedPreferences(preferencesFile, Context.MODE_PRIVATE)
    downloadDate = settings?.getString("lD", "").toString()
    if (downloadDate != currentDate){
        //some stuff that is not being executed, not relevant for the error
    }
    super.onStart()
    if(PermissionsManager.areLocationPermissionsGranted(this.context)){
        locationEngine?.requestLocationUpdates()
        locationLayerPlugin?.onStart()
    }
    mapView.onStart()
}
override fun onResume() {
    super.onResume()
    mapView.onResume()
}

override fun onPause() {
    super.onPause()
    mapView.onPause()
}
override fun onStop() {
    val settings = context?.getSharedPreferences(preferencesFile, Context.MODE_PRIVATE)
    val editor = settings?.edit()
    editor?.putString("lD", downloadDate)
    editor?.apply()
    locationEngine?.removeLocationUpdates()
    locationLayerPlugin?.onStop()
    super.onStop()
    mapView.onStop()
}
override fun onLowMemory() {
    super.onLowMemory()
    mapView.onLowMemory()
}
override fun onDestroy() {
    locationEngine?.deactivate()
    val settings = context?.getSharedPreferences(preferencesFile, Context.MODE_PRIVATE)
    val editor = settings?.edit()
    editor?.putString("shil", shilview.text.toString())
    editor?.putString("dolr", dolrview.text.toString())
    editor?.putString("quid", quidview.text.toString())
    editor?.putString("peny", shilview.text.toString())
    editor?.apply()
    super.onDestroy()
    mapView.onDestroy()
}
override fun onDestroyView() {
    mapView.onDestroy()
    super.onDestroyView()
}

override fun onSaveInstanceState(outState: Bundle) {
    super.onSaveInstanceState(outState)
    mapView.onSaveInstanceState(outState)
}
@SuppressWarnings("MissingPermission")
override fun onConnected() {
    Log.d(t, "[onConnected] requesting location updates")
    locationEngine?.requestLocationUpdates()
}

override fun onExplanationNeeded(permissionsToExplain: MutableList<String>?) {
    Log.d(t, "Permissions: $permissionsToExplain")
}

override fun onLocationChanged(location: Location?) {
    location?.let{
        originLocation = location
        setCameraPosition(location)
    }
}

override fun onPermissionResult(granted: Boolean) {
    Log.d(t, "[onPermissionResult] granted == $granted")
    if(granted){
        enableLocation()
    }else{
        Toast.makeText(context, "Let me know where you are. Hide and seek is not my game.", Toast.LENGTH_LONG).show()
    }
}

override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
    permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults)
}
private fun enableLocation(){
    if (PermissionsManager.areLocationPermissionsGranted(this.context)){
        Log.d(t, "Permissions granted")
        initLocationEngine()
        initLocationLayer()
    }else{
        Log.d(t, "Permissions denied")
        permissionsManager = PermissionsManager(this)
        permissionsManager.requestLocationPermissions(this.activity)
    }
}

private fun setCameraPosition(location: Location){
    map.animateCamera(CameraUpdateFactory.newLatLng(LatLng(location.latitude, location.longitude)))
}

@SuppressWarnings("MissingPermission")
private fun initLocationEngine(){
    locationEngine = LocationEngineProvider(this.context).obtainBestLocationEngineAvailable()
    locationEngine?.apply {
        interval = 5000
        fastestInterval = 1000
        priority = LocationEnginePriority.HIGH_ACCURACY
        activate()
    }
    val lastLocation = locationEngine?.lastLocation
    if(lastLocation != null){
        originLocation = lastLocation
        setCameraPosition(lastLocation)
    }else{
        locationEngine?.addLocationEngineListener(this)
    }
}

@SuppressWarnings("MissingPermission")
private fun initLocationLayer(){
    locationLayerPlugin = LocationLayerPlugin(mapView, map, locationEngine)
    locationLayerPlugin?.apply{
        setLocationLayerEnabled(true)
        cameraMode = CameraMode.TRACKING
        renderMode = RenderMode.NORMAL
    }
}



    Debugger:
    D/FragmentMap: Permissions granted
    D/FragmentMap: [onConnected] requesting location updates
    V/AudioManager: playSoundEffect   effectType: 0
    W/libEGL: EGLNativeWindowType 0x711ce13010 disconnect failed
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.23, mControlPoint1y = 0.06, mControlPoint2x = 0.09, mControlPoint2y = 0.97
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.6, mControlPoint1y = 0.9, mControlPoint2x = 0.8, mControlPoint2y = 1.0
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.23, mControlPoint1y = 0.06, mControlPoint2x = 0.09, mControlPoint2y = 0.97
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.6, mControlPoint1y = 0.9, mControlPoint2x = 0.8, mControlPoint2y = 1.0
    V/AudioManager: playSoundEffect   effectType: 0
    I/zygote64: Do full code cache collection, code=1007KB, data=661KB
    I/zygote64: After code cache collection, code=1003KB, data=590KB
    V/Mbgl-ConnectivityReceiver: Connected: true
    I/Mbgl-EGLConfigChooser: In emulator: false
    D/mali_winsys: EGLint new_window_surface(egl_winsys_display *, void *, EGLSurface, EGLConfig, egl_winsys_surface **, egl_color_buffer_format *, EGLBoolean) returns 0x3000
    D/FragmentMap: Permissions granted
    D/FragmentMap: [onConnected] requesting location updates
    V/AudioManager: playSoundEffect   effectType: 0
    W/libEGL: EGLNativeWindowType 0x711ce13010 disconnect failed
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.23, mControlPoint1y = 0.06, mControlPoint2x = 0.09, mControlPoint2y = 0.97
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.6, mControlPoint1y = 0.9, mControlPoint2x = 0.8, mControlPoint2y = 1.0
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.23, mControlPoint1y = 0.06, mControlPoint2x = 0.09, mControlPoint2y = 0.97
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.6, mControlPoint1y = 0.9, mControlPoint2x = 0.8, mControlPoint2y = 1.0
    V/AudioManager: playSoundEffect   effectType: 0
    V/Mbgl-ConnectivityReceiver: Connected: true
    I/Mbgl-EGLConfigChooser: In emulator: false
    D/mali_winsys: EGLint new_window_surface(egl_winsys_display *, void *, EGLSurface, EGLConfig, egl_winsys_surface **, egl_color_buffer_format *, EGLBoolean) returns 0x3000
    D/FragmentMap: Permissions granted
    V/AudioManager: playSoundEffect   effectType: 0
    I/zygote64: Do partial code cache collection, code=1003KB, data=614KB
    I/zygote64: After code cache collection, code=1003KB, data=614KB
    I/zygote64: Increasing code cache capacity to 3MB
    W/libEGL: EGLNativeWindowType 0x711ce13010 disconnect failed
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.23, mControlPoint1y = 0.06, mControlPoint2x = 0.09, mControlPoint2y = 0.97
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.6, mControlPoint1y = 0.9, mControlPoint2x = 0.8, mControlPoint2y = 1.0
    CubicBezierInterpolator  mControlPoint1x = 0.23, mControlPoint1y = 0.06, mControlPoint2x = 0.09, mControlPoint2y = 0.97
    D/CubicBezierInterpolator: CubicBezierInterpolator  mControlPoint1x = 0.6, mControlPoint1y = 0.9, mControlPoint2x = 0.8, mControlPoint2y = 1.0
    D/FragmentMap: [onConnected] requesting location updates
    V/AudioManager: playSoundEffect   effectType: 0
    A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x30 in tid 7693 (.frederik.coinz)
    Disconnected from the target VM, address: 'localhost:8600', transport: 'socket'
Zoe
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Frederik Kelbel
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1 Answers1

1

Looks like you are using Mapbox in a Fragment.

Keep mapView.onDestroy() below super call @ onDestroyView() method of Fragment and take mapView.onDestroy() out of Fragment's onDestroy() method. As per this issue on github.

Also read how it hould be used in fragment.

Your method will look like this.

override fun onDestroy() {
    locationEngine?.deactivate()
    val settings = context?.getSharedPreferences(preferencesFile, Context.MODE_PRIVATE)
    val editor = settings?.edit()
    editor?.putString("shil", shilview.text.toString())
    editor?.putString("dolr", dolrview.text.toString())
    editor?.putString("quid", quidview.text.toString())
    editor?.putString("peny", shilview.text.toString())
    editor?.apply()
    super.onDestroy()
    //mapView.onDestroy() not required here for Fragment
}
 override fun onDestroyView() {
    super.onDestroyView()
    mapView.onDestroy() //after super call

}
Aalap Patel
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