GeoLocation

DonManfred · Nov 25, 2018

This is Library which is based on the code from this Github project.

GeoLocation
...|https://www.b4x.com
Author: DonManfred
Version: 1.1

GeoLocator
- Events:
  - Location (success As Boolean, Lattitude As Double, Longitude As Double)
- Functions:
  - geoAddress
  - GetLocation
  - Initialize (EventName As String)
- Properties:
  - Address As String [read only]
  - City As String [read only]
  - Country As String [read only]
  - KnownName As String [read only]
  - Lattitude As Double [read only]
  - Longitude As Double [read only]
  - PostalCode As String [read only]
  - State As String [read only]

If get the Location from the System. It result in using th GPS Provider, Network Provider or PASSIVE_PROVIDER. In the resultevent you get info from which Provider the Location is from.

Peter Simpson · Nov 25, 2018

Excellent Don...

Luis Carrillo Escalona · Nov 25, 2018

Hi, but show this message:

Registo conectado a: samsung SM-J510MN
--------- beginning of main
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = false **
sending message to waiting queue (activity_permissionresult)
running waiting messages (1)
main$ResumableSub_Activity_Createresume (java line: 396)
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.get(ArrayList.java:411)
at de.donmanfred.GeoLocatorwrapper.geoAddress(GeoLocatorwrapper.java:109)
at b4a.example.main$ResumableSub_Activity_Create.resume(main.java:396)
at anywheresoftware.b4a.BA.checkAndRunWaitForEvent(BA.java:245)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:185)
at anywheresoftware.b4a.BA$2.run(BA.java:365)
at anywheresoftware.b4a.BA.setActivityPaused(BA.java:437)
at b4a.example.main$ResumeMessage.run(main.java:306)
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:6816)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1563)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1451)
--------- beginning of crash

peacemaker · Nov 25, 2018

Yes, errors if try in the PC emulator (MEMU)

- the error in

B4X:

GeoLoc.geoAddress

B4X:

** Activity (main) Resume **
Error occurred on line: 33 (Main)
java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
    at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
    at java.util.ArrayList.get(ArrayList.java:308)
    at de.donmanfred.GeoLocatorwrapper.geoAddress(GeoLocatorwrapper.java:109)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at anywheresoftware.b4a.shell.Shell.runVoidMethod(Shell.java:783)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:363)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:260)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:171)
    at anywheresoftware.b4a.shell.DebugResumableSub$RemoteResumableSub.resume(DebugResumableSub.java:22)
    at anywheresoftware.b4a.BA.checkAndRunWaitForEvent(BA.java:245)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:137)
    at anywheresoftware.b4a.BA$2.run(BA.java:365)
    at android.os.Handler.handleCallback(Handler.java:739)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5254)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

If to comment .geoAddress with log lines - it is error:

B4X:

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
GeoLocation_Location(false, null, null, Unble to Trace your location)
b4a.example.main:_geolocation_location, [false, null, null, Unble to Trace your location]
Error occurred on line: 44 (Main)
java.lang.IllegalArgumentException: method b4a.example.main._geolocation_location argument 2 has type double, got null
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:738)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:357)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:260)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
    at anywheresoftware.b4a.BA$2.run(BA.java:365)
    at android.os.Handler.handleCallback(Handler.java:739)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5254)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
** Activity (main) Pause, UserClosed = true **

If to test on real device - no any errors: the address and GPS coords are got OK !

B4X:

GeoLocation_Location(true, xx.25059298891574, yy.25199742987752, GPS_PROVIDER)

Thanks, Don !
But maybe to add more internal error traps ? To debug at any emulator or real devices.

DonManfred · Nov 25, 2018

Luis Carrillo Escalona said:
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

Make sure to call the method geoAddress only after you got a valid Location.

peacemaker said:
GeoLoc.geoAddress

Make sure to call the method geoAddress only after you got a valid Location.

peacemaker said:
GeoLocation_Location(false, null, null, Unble to Trace your location)

Check v1.01. I´ve updated the lib in #1

For any further issue: You should always start a new thread for your questions.

peacemaker · Nov 25, 2018

DonManfred said:
Make sure to call the method geoAddress only after you got a valid Location.

I just tried to try your sample project.

DonManfred said:
For any further issue: You should always start a new thread for your questions.

No any questions, let the lib be with errors, thanks.

DonManfred · Nov 25, 2018

Yes. Sure.
I did´nt know that.
I just found out myself that is better not to call this method if the location is not known.

peacemaker · Nov 25, 2018

B4X:

Sub GeoLocation_Location(success As Boolean, Lattitude As Double, Longitude As Double, info As String)
    'GeoLocation_Location(true, xx.25059298891574, yy.25199742987752, GPS_PROVIDER)
    Log($"GeoLocation_Location(${success}, ${Lattitude}, ${Longitude}, ${info})"$)
    If success Then
        GeoLoc.geoAddress
        Log(GeoLoc.Address)
        Log(GeoLoc.City)
        Log(GeoLoc.Country)
        Log(GeoLoc.KnownName)
        Log(GeoLoc.PostalCode)
        Log(GeoLoc.State)
    End If
End Sub

DonManfred · Nov 25, 2018

I know my example code. It just worked for me as i did get a successtion location directly and due to this i also got a successfully result in the address.

Cebuvi · Nov 26, 2018

I tested the library on a Samsung S8 and it works very well.
Great job Don.

shasunder · Nov 26, 2018

Your library crashes if LocationProvidersAllowed is empty. I tested using the below code. I disabled Location to test this. I agree with
Luis Carrillo Escalona.

Dim Phone1 As Phone
Dim LocationProvidersAllowed As String
LocationProvidersAllowed = Phone1.GetSettings("location_providers_allowed")

scsjc · Dec 11, 2018

I DonManfred,.. Great Library

Is it possible to force the position update to obtain the address in the current coordinates?
thanks

DonManfred · Dec 11, 2018

You can call the method to get the location. It checks different providers and returns the one with a result.

B4X:

    public void GetLocation(BA ba) {
        LocationManager locationManager = (LocationManager) ba.context.getSystemService(ba.context.LOCATION_SERVICE);

        if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {

            // showSettingsAlert();
            //Toast.makeText(context, "Permission Denied", Toast.LENGTH_SHORT).show();
        String info = "Permission Denied";
            ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(false),null,null,info});

        } else if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
            

            Location location1 = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            Location location2 = locationManager.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);
            if (location != null) {
                double latti = location.getLatitude();
                double longi = location.getLongitude();
                lattitude = latti;
                longitude = longi;
                fromMockProvider = location.isFromMockProvider();
            String info = "NETWORK_PROVIDER";
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(true),lattitude,longitude, info, fromMockProvider});
            } else if (location1 != null) {
                double latti = location1.getLatitude();
                double longi = location1.getLongitude();
                lattitude = latti;
                longitude = longi;
            String info = "GPS_PROVIDER";
                fromMockProvider = location1.isFromMockProvider();
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(true),lattitude,longitude, info, fromMockProvider});
            } else if (location2 != null) {
                double latti = location2.getLatitude();
                double longi = location2.getLongitude();
                lattitude = latti;
                longitude = longi;
                fromMockProvider = location2.isFromMockProvider();
            String info = "PASSIVE_PROVIDER";
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(true),lattitude,longitude, info, fromMockProvider});
            } else {
                //Toast.makeText(context, "Unble to Trace your location", Toast.LENGTH_SHORT).show();
            double value = 0;
                fromMockProvider = false;
                String info = "Unble to Trace your location";
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(false),value,value, info, fromMockProvider});
            }
        }
    }

I don´t know if there is something to FORCE a faster result.

scsjc · Dec 12, 2018

DonManfred said:

You can call the method to get the location. It checks different providers and returns the one with a result.

B4X:

    public void GetLocation(BA ba) {
        LocationManager locationManager = (LocationManager) ba.context.getSystemService(ba.context.LOCATION_SERVICE);

        if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {

            // showSettingsAlert();
            //Toast.makeText(context, "Permission Denied", Toast.LENGTH_SHORT).show();
        String info = "Permission Denied";
            ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(false),null,null,info});

        } else if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
           

            Location location1 = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            Location location2 = locationManager.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);
            if (location != null) {
                double latti = location.getLatitude();
                double longi = location.getLongitude();
                lattitude = latti;
                longitude = longi;
                fromMockProvider = location.isFromMockProvider();
            String info = "NETWORK_PROVIDER";
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(true),lattitude,longitude, info, fromMockProvider});
            } else if (location1 != null) {
                double latti = location1.getLatitude();
                double longi = location1.getLongitude();
                lattitude = latti;
                longitude = longi;
            String info = "GPS_PROVIDER";
                fromMockProvider = location1.isFromMockProvider();
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(true),lattitude,longitude, info, fromMockProvider});
            } else if (location2 != null) {
                double latti = location2.getLatitude();
                double longi = location2.getLongitude();
                lattitude = latti;
                longitude = longi;
                fromMockProvider = location2.isFromMockProvider();
            String info = "PASSIVE_PROVIDER";
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(true),lattitude,longitude, info, fromMockProvider});
            } else {
                //Toast.makeText(context, "Unble to Trace your location", Toast.LENGTH_SHORT).show();
            double value = 0;
                fromMockProvider = false;
                String info = "Unble to Trace your location";
          ba.raiseEventFromDifferentThread(this, null, 0, eventName + "_location", true, new Object[] {Boolean.valueOf(false),value,value, info, fromMockProvider});
            }
        }
    }

I don´t know if there is something to FORCE a faster result.

How call this code from b4a ?

DonManfred · Dec 12, 2018

see the example

ashraffarid · Mar 20, 2019

thanks DonManfred

first time i use the sample it works good(on real device )
it tried again on the same device
i have error

** Activity (main) Resume **
Error occurred on line: 33 (Main)
java.io.IOException: grpc failed
at android.location.Geocoder.getFromLocation(Geocoder.java:136)
at de.donmanfred.GeoLocatorwrapper.geoAddress(GeoLocatorwrapper.java:112)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runVoidMethod(Shell.java:777)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:354)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:176)
at anywheresoftware.b4a.shell.DebugResumableSub$RemoteResumableSub.resume(DebugResumableSub.java:22)
at anywheresoftware.b4a.BA.checkAndRunWaitForEvent(BA.java:250)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:137)
at anywheresoftware.b4a.BA$2.run(BA.java:370)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6776)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1496)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1386)

and other question
How i get data for other location

thanks

prajinpraveen · Apr 13, 2019

Great Library

same results as ashraffarid on Android 8 Hauwei

also if the gps location is disabled, the app crashes on line GeoLoc.geoAddress
Error : java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

When the GPS location is enabled, same error continues until "Google Maps" application is opened and closed.

PumaCyan · Jan 28, 2020

I apologize
I found an error like this in the log editor
is there anything that needs to be corrected?

jtare · Jan 28, 2020

PumaCyan said:
I apologize
I found an error like this in the log editor
is there anything that needs to be corrected?

What does your sub looks like? It should be something like this:

B4X:

Sub GeoLocation_Location(success As Boolean, Lattitude As Double, Longitude As Double, info As String)
'Something
Ens Sub

I've never tried this library, but should work. Also next time I suggest you to create a new thread to make questions.

Geraldo Silva · May 21, 2020

scsjc said:
How call this code from b4a ?

hello friends like MANFRED,
as this function calls. "public void GetLocation (BA ba) {" do I have to use "#if java"?
I am using your Library, which is very good.
Can you help me ?

GeoLocation

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