Android Question App crash when add googlemap to AHViewPager with Tablayout ?

[pmt]

Hi everyone,

I have created the app by follow Erel 's googlemap v2 tutorial and worked!!.

I want to add googlemap v2 to Corwin 's AHViewPager but It 's not work the app crash at run time.

I try theses steps
1.Create app base on Corwin's NavigatoinView1_0.zip sample project.
from this link https://www.b4x.com/android/forum/threads/designsupport-additional-material-design-components.58893/

I added google play service configurations to manifest and include all jars and resources in activity.

2.add 3 panels to the Page Container

Sub Activity_Create(FirstTime As Boolean)

...
Dim pn1 As Panel
Dim pn2 As Panel
Dim pnMap As Panel

pn1 .Initialize("")
pn2 .Initialize("")
pnMap .Initialize("")  
'if  I   load  map layout here the app crash at first run time then I will load later at VP_PageCreated  event

'there are 3 pages
PC.AddPage(pn1, "page1") 'empty page
PC.AddPage(pn2, "page2") 'empty page
PC.AddPage(pnMap, "page3") 'empty page
...
End Sub

3.Load Map Layout

Sub VP_PageCreated (Position As Int, Page As Object)

Dim pn As Panel
        If Position =2 Then 'page 3 for  map
            pn = Page
            pn.LoadLayout("mymap")
        End If

End Sub

4.run the app
the app crash when change page from page 1 to page 2
==============
--------- beginning of crash
--------- beginning of main
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
PageCreated: 0
PageCreated: 1
StateChange: 1
StateChange: 2
PageChanged: 1
PageCreated: 2
StateChange: 0
java.lang.RuntimeException: java.lang.SecurityException: my location requires permission ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION
at anywheresoftware.b4a.objects.MapFragmentWrapper$1.onMapReady(MapFragmentWrapper.java:196)
at com.google.android.gms.maps.zzaa.zza(Unknown Source)
at com.google.android.gms.maps.internal.zzaq.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:387)
at gl.bcom.google.android.gms.DynamiteModulesB:20)
at com.google.android.gms.maps.internal.bf.acom.google.android.gms.DynamiteModulesB:5)
at com.google.maps.api.android.lib6.impl.bb.runcom.google.android.gms.DynamiteModulesB:5)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5452)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:762)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)
Caused by: java.lang.SecurityException: my location requires permission ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION
at com.google.maps.api.android.lib6.impl.az.ccom.google.android.gms.DynamiteModulesB:675)
at com.google.android.gms.maps.internal.k.onTransactcom.google.android.gms.DynamiteModulesB:141)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.internal.zzed.zzb(Unknown Source)
at com.google.android.gms.maps.internal.zzg.setMyLocationEnabled(Unknown Source)
at com.google.android.gms.maps.GoogleMap.setMyLocationEnabled(Unknown Source)
at anywheresoftware.b4a.objects.MapFragmentWrapper$1.onMapReady(MapFragmentWrapper.java:183)
... 13 more


==============
I try to solve the problem but I can't.

Regards,

 

[DonManfred]

Based on the error

java.lang.RuntimeException: java.lang.SecurityException: my location requires permission ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION
at anywheresoftware.b4a.objects.MapFragmentWrapper$1.onMapReady(MapFragmentWrapper.java:196)

you maybe have set the manifest incorrectly.
Check and compare the manifest with the googlemaps example which is working.

Upload a small project which shows the issue

 

[Erel]

My guess is that you set the targetSdkVersion to 23+ and haven't requested the location permission at runtime. See the runtime permissions tutorial: https://www.b4x.com/search?query=runtime+permissions

 

[pmt]

Check and compare the manifest with the googlemaps example which is working.

I didn't find something wrong I copy and paste the manifest from the app which is working.

My guess is that you set the targetSdkVersion to 23+ and haven't requested the location permission at runtime.

I don't know why but I don't need to requested the location permission at runtime , I use <uses-sdk android:minSdkVersion="15" android:targetSdkVersion="25"/> in manifest for the app which is working.

However now it 's working but I don't know why , I do nothing .Surprise !!

May be the problem from google map api or my android phone.

I will check later ,why does it work ?


Thank you very much.

 

[DonManfred]

android:targetSdkVersion="25"

Starting with android api 23 you need to USE Runtimepermissionslib and request permissions at runtime.

This is an optional feature. It is only relevant if android:targetSdkVersion is set to 23 or above.
If the targetSdkVersion is lower than 23 then the standard permissions system will be used on all devices including Android 6+.

B4A v6.0 adds support for runtime permissions. The nice thing about runtime permissions is that the user is not asked for any permission when they install your application from Google Play. Instead they will be asked to approve "dangerous" permissions at runtime.

Luckily most permissions are not considered dangerous. You can see the list of permissions that are considered dangerous here: https://developer.android.com/guide/topics/security/permissions.html#perm-groups

I just see the link is no longer existent...

See here for the List of dangerous Permissions: https://developer.android.com/guide/topics/permissions/requesting.html#perm-groups

ACCESS_FINE_LOCATION is one of these permissions you need to use Runtimepermissions Library to request the permission for.

 

[pmt]

Starting with android api 23 you need to USE Runtimepermissionslib and request permissions at runtime.

I confirm , I use < android:targetSdkVersion="25" > and it work without use Runtimepermissionslib and request permissions at runtime.

I test on Lollipop and Marshmallow.

Regards,

 

[DonManfred]

and it work without use Runtimepermissionslib and request permissions at runtime.

java.lang.RuntimeException: java.lang.SecurityException: my location requires permission ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION

Looks like it does not work without using Runtimepermissionslib...

 

[pmt]

Now my app work without crash as my answer at reply#4 .

However now it 's working but I don't know why , I do nothing .Surprise !!

However for security reason I agree with you I should request the permission at runtime.

Regards,

 

[DonManfred]

or set targetsdk to 22