[Android Apps and Games] coxtor:
Book-n-drive is working flawlessly for me.

I am facing the same issue with call a bike, here a logcat:

12-03 13:26:06.428 6423-9188/system_process I/ActivityManager: Killing 16049:de.bahn.callabike/u0a75 (adj 900): crash
12-03 13:26:06.432 6423-9188/system_process I/ActivityManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10300000 cmp=de.bahn.callabike/com.andience.core.ui.StartupActivity (has extras)} from uid 10095 on display 0
12-03 13:26:06.495 6423-8731/system_process I/ActivityManager: Start proc 16146:de.bahn.callabike/u0a75 for activity de.bahn.callabike/com.andience.core.ui.StartupActivity
12-03 13:26:06.558 16146-16146/? W/System: ClassLoader referenced unknown path: /data/app/de.bahn.callabike-1/lib/arm64
12-03 13:26:06.833 6423-6591/system_process I/ActivityManager: Displayed de.bahn.callabike/com.andience.core.ui.StartupActivity: +382ms
12-03 13:26:08.222 6423-6466/system_process I/ActivityManager: START u0 {act=de.bahn.callabike.LaunchApplication cmp=de.bahn.callabike/.CallABike} from uid 10075 on display 0
12-03 13:26:08.268 16146-16146/de.bahn.callabike W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
12-03 13:26:08.274 16146-16146/de.bahn.callabike I/read*CustomerInfo: read CustomerInfo
12-03 13:26:08.306 16146-16146/de.bahn.callabike I/AppCompatViewInflater: app:theme is now deprecated. Please move to using android:theme instead.
12-03 13:26:08.405 16146-16146/de.bahn.callabike I/main: setting up search
12-03 13:26:08.408 16146-16146/de.bahn.callabike I/GAv4: Google Analytics 9.6.83 is starting up. To enable debug logging on a device run:
adb shell setprop log.tag.GAv4 DEBUG
adb logcat -s GAv4
12-03 13:26:08.417 16146-16146/de.bahn.callabike I/GA: screen name: map
12-03 13:26:08.418 16146-16167/de.bahn.callabike W/GAv4: AnalyticsReceiver is not registered or is disabled. Register the receiver for reliable dispatching on non-Google Play devices. See http://goo.gl/8Rd3yj for instructions.
12-03 13:26:08.421 16146-16167/de.bahn.callabike W/GAv4: CampaignTrackingReceiver is not registered, not exported or is disabled. Installation campaign tracking is not possible. See http://goo.gl/8Rd3yj for instructions.
12-03 13:26:08.423 6423-7528/system_process I/ActivityManager: START u0 {cmp=de.bahn.callabike/de.bahn.callabikecore.ui.MessageActivity} from uid 10075 on display 0
12-03 13:26:08.423 16146-16167/de.bahn.callabike W/GAv4: AnalyticsService not registered in the app manifest. Hits might not be delivered reliably. See http://goo.gl/8Rd3yj for instructions.
12-03 13:26:08.431 16146-16146/de.bahn.callabike I/main: setting up search
12-03 13:26:08.431 16146-16146/de.bahn.callabike I/GA: screen name: map
12-03 13:26:08.475 16146-16146/de.bahn.callabike I/zzai: Making Creator dynamically
12-03 13:26:08.480 16146-16146/de.bahn.callabike W/System: ClassLoader referenced unknown path: /system/priv-app/GmsCore/lib/arm64
12-03 13:26:08.481 16146-16146/de.bahn.callabike D/ApplicationLoaders: ignored Vulkan layer search path /system/priv-app/GmsCore/lib/arm64:/system/fake-libs64:/system/priv-app/GmsCore/GmsCore.apk!/lib/arm64-v8a:/system/lib64:/vendor/lib64 for namespace 0x7f99dc60f0
12-03 13:26:08.490 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onCreate
12-03 13:26:08.490 16146-16146/de.bahn.callabike D/GmsMapViewImpl: GoogleMap instance created
12-03 13:26:08.492 16146-16146/de.bahn.callabike W/System: ClassLoader referenced unknown path:
12-03 13:26:08.492 16146-16146/de.bahn.callabike W/System: ClassLoader referenced unknown path: /system/priv-app/GmsCore/lib/arm64
12-03 13:26:08.493 16146-16146/de.bahn.callabike D/ApplicationLoaders: ignored Vulkan layer search path /system/priv-app/GmsCore/lib/arm64:/system/fake-libs64:/system/priv-app/GmsCore/GmsCore.apk!/lib/arm64-v8a:/system/lib64:/vendor/lib64 for namespace 0x7f99dc6160
12-03 13:26:08.495 16146-16146/de.bahn.callabike W/System.err: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
12-03 13:26:08.496 16146-16146/de.bahn.callabike W/System.err: SLF4J: Defaulting to no-operation (NOP) logger implementation
12-03 13:26:08.496 16146-16146/de.bahn.callabike W/System.err: SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
12-03 13:26:08.497 16146-16146/de.bahn.callabike D/GmsMapView: Loading native vtm-jni
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.535 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.536 16146-16146/de.bahn.callabike D/statusbar: display height 1920 statusbar 0 actionbar 1340
12-03 13:26:08.536 16146-16146/de.bahn.callabike D/statusbar: 1920 fs
12-03 13:26:08.537 16146-16146/de.bahn.callabike D/GmsMapViewImpl: getMapAsync
12-03 13:26:08.538 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onCreate
12-03 13:26:08.538 16146-16146/de.bahn.callabike D/GmsMapViewImpl: GoogleMap instance created
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.554 16146-16146/de.bahn.callabike D/GmsMapViewImpl: getMapAsync
12-03 13:26:08.556 16146-16146/de.bahn.callabike D/PromotionDialog: 1 : showStadtRadInformation called
12-03 13:26:08.564 16146-16146/de.bahn.callabike D/remote: remoteControlled map
12-03 13:26:08.565 16146-16146/de.bahn.callabike D/statusbar: display height 1920 statusbar 58 actionbar 1340
12-03 13:26:08.565 16146-16146/de.bahn.callabike D/statusbar: 1862 fs
12-03 13:26:08.566 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onDestroy
12-03 13:26:08.567 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onDestroy
12-03 13:26:08.586 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onCreate
12-03 13:26:08.586 16146-16146/de.bahn.callabike D/GmsMapViewImpl: GoogleMap instance created
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.603 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.604 16146-16146/de.bahn.callabike D/statusbar: display height 1920 statusbar 0 actionbar 1340
12-03 13:26:08.604 16146-16146/de.bahn.callabike D/statusbar: 1920 fs
12-03 13:26:08.604 16146-16146/de.bahn.callabike D/GmsMapViewImpl: getMapAsync
12-03 13:26:08.605 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onCreate
12-03 13:26:08.605 16146-16146/de.bahn.callabike D/GmsMapViewImpl: GoogleMap instance created
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: Compass not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike W/GmsMapImpl: ZoomControls not yet supported
12-03 13:26:08.622 16146-16146/de.bahn.callabike D/GmsMapViewImpl: getMapAsync
12-03 13:26:08.623 16146-16146/de.bahn.callabike D/PromotionDialog: 1 : showStadtRadInformation called
12-03 13:26:08.623 16146-16146/de.bahn.callabike D/remote: remoteControlled map
12-03 13:26:08.624 16146-16146/de.bahn.callabike D/statusbar: display height 1920 statusbar 58 actionbar 1340
12-03 13:26:08.624 16146-16146/de.bahn.callabike D/statusbar: 1862 fs
12-03 13:26:08.626 16146-16146/de.bahn.callabike I/GA_RELEASE: keyyUA-60306971-2 !!!
12-03 13:26:08.628 16146-16146/de.bahn.callabike I/onResume: onResume
12-03 13:26:08.628 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onResume
12-03 13:26:08.628 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onResume
12-03 13:26:08.633 16146-16146/de.bahn.callabike D/GmsMapViewImpl: onPause
12-03 13:26:08.648 16146-16146/de.bahn.callabike D/GmsMapImpl: setOnCameraChangeListener
12-03 13:26:08.649 16146-16146/de.bahn.callabike D/AndroidRuntime: Shutting down VM
12-03 13:26:08.650 16146-16146/de.bahn.callabike E/AndroidRuntime: FATAL EXCEPTION: main
Process: de.bahn.callabike, PID: 16146
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean de.bahn.callabikecore.CABBaseActivity.isMapNormal()' on a null object reference
at de.bahn.callabikecore.fragments.AbstractSearchFragment.changeMapType(AbstractSearchFragment.java:678)
at de.bahn.callabikecore.fragments.AbstractSearchFragment.setupMap(AbstractSearchFragment.java:846)
at de.bahn.callabikecore.fragments.MainSearchFragment.setupMap(MainSearchFragment.java:173)
at de.bahn.callabikecore.fragments.AbstractSearchFragment.onMapReady(AbstractSearchFragment.java:417)
at com.google.android.gms.maps.MapView$zza$1.zza(Unknown Source)
at com.google.android.gms.maps.internal.zzt$zza.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:499)
at com.google.android.gms.maps.internal.IOnMapReadyCallback$Stub$Proxy.onMapReady(IOnMapReadyCallback.java:79)
at org.microg.gms.maps.MapViewImpl$1.run(MapViewImpl.java:117)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6186)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
12-03 13:26:08.652 6423-7528/system_process W/ActivityManager: Force finishing activity de.bahn.callabike/de.bahn.callabikecore.ui.MessageActivity
12-03 13:26:08.656 6423-7528/system_process W/ActivityManager: Force finishing activity de.bahn.callabike/.CallABike
12-03 13:26:09.156 6423-6499/system_process W/ActivityManager: Activity pause timeout for ActivityRecord{fc6a3de u0 de.bahn.callabike/de.bahn.callabikecore.ui.MessageActivity t1337 f}
12-03 13:26:13.477 16146-16167/de.bahn.callabike E/GAv4: Successfully bound to service but never got onServiceConnected callback
12-03 13:26:13.485 6423-6499/system_process W/BroadcastQueue: Skipping deliver [background] BroadcastRecord{dc6a2a1 u-1 android.net.conn.CONNECTIVITY_CHANGE} to ReceiverList{e2528ab 16146 de.bahn.callabike/10075/u0 remote:b08aafa}: process crashing
12-03 13:26:18.665 6423-6499/system_process W/ActivityManager: Activity destroy timeout for ActivityRecord{44bba63 u0 de.bahn.callabike/.CallABike t1337 f}
12-03 13:26:19.706 6423-6499/system_process W/ActivityManager: Activity destroy timeout for ActivityRecord{fc6a3de u0 de.bahn.callabike/de.bahn.callabikecore.ui.MessageActivity t1337 f}
12-03 13:26:19.712 6423-6499/system_process W/ActivityManager: Activity destroy timeout for ActivityRecord{4733800 u0 de.bahn.callabike/com.andience.core.ui.StartupActivity t1337 f}