Android Question B4A: GPS

[Husain Ragib]

With the GPS example, I could get the information only when I am outside. Won't it fetch the details indoor? The GPS app in my mobile shows the location even if I am inside. Isn't there any way to get my location indoor?

 

[eurojam]

you should try the fused location provider: https://www.b4x.com/android/forum/threads/fusedlocationprovider.50614/

GPS needs the sky viewable....it will not work indoor....see here: https://en.wikipedia.org/wiki/Global_Positioning_System

 

[Husain Ragib]

Thank you Euro for your reply.

I have a query while accesing web service.

I am accessing my Email sending webservice in b4a.

In Process_Globals funtion, I have declared the following with my public webservice url defined in PostUrl string
Dim HttpClient1 As OkHttpClient
Dim PostUrl As String

I have initialised my httpclient in Activity_Create if FirstTime
HttpClient1.Initialize("HttpClient1")

Then in my scenario where i want to send email, I am executing the request as follows:
Dim request As OkHttpRequest
request.InitializeGet(PostUrl)
request.Timeout = 100000 'set timeout to 10 seconds
If HttpClient1.Execute(request, 1) = False Then Return 'Will be false if their is already a running task (with the same id).
ProgressDialogShow("Sending Email...")

I have also used the Success and Error event for getting response as follows.

Sub HttpClient1_ResponseSuccess (Response As OkHttpResponse, TaskId As Int)
Log("ResponseSuccess")
ProgressDialogHide
End Sub

Sub HttpClient1_ResponseError (Reason As String, StatusCode As Int, TaskId As Int)
Log(Reason)
Log(StatusCode)
ProgressDialogHide

Dim msg As String
msg = "Error connecting to server."
If Reason <> Null Then msg = msg & CRLF & Reason
ToastMessageShow (msg, True)
End Sub

When I try to send email, eventhough my response is a sucess, I am not receiving any emails. Can you please help me on this.
Also, If I need to pass parameters to my webservice, how can I acheive the same?

I tried the above using HttpClient instead of OkHttpClient, but i am getting below exception
If HttpClient1.Execute(request, 1) = False Then
javac 1.8.0_76-release
src\b4a\EnTrackBLE\actmonitor.java:405: error: cannot access ClientProtocolException
if (_httpclient1.Execute(processBA,_request,(int) (1))==anywheresoftware.b4a.keywords.Common.False) {
^
class file for org.apache.http.client.ClientProtocolException not found

 

[eurojam]

Husain,
please use the code Tags or the code Tool - see image - then your question will be much more easier to read....

 

[Husain Ragib]

1. I am accessing my Email sending webservice in b4a.
   
   In Process_Globals funtion, I have declared the following with my public webservice url defined in PostUrl string
   
   Dim HttpClient1 As OkHttpClient
   Dim PostUrl As String
   
   I have initialised my httpclient in Activity_Create if FirstTime
   
   HttpClient1.Initialize("HttpClient1")
   
   Then in my scenario where i want to send email, I am executing the request as follows:
   
   Dim request As OkHttpRequest
   request.InitializeGet(PostUrl)
   request.Timeout = 100000 'set timeout to 10 seconds
   If HttpClient1.Execute(request, 1) = False Then Return 'Will be false if their is already a running task (with the same id).
   ProgressDialogShow("Sending Email...")
   
   
   I have also used the Success and Error event for getting response as follows.
   
   Sub HttpClient1_ResponseSuccess (Response As OkHttpResponse, TaskId As Int)
   Log("ResponseSuccess")
   ProgressDialogHide
   End Sub
   
   
   Sub HttpClient1_ResponseError (Reason As String, StatusCode As Int, TaskId As Int)
   Log(Reason)
   Log(StatusCode)
   ProgressDialogHide
   
   Dim msg As String
   msg = "Error connecting to server."
   If Reason <> Null Then msg = msg & CRLF & Reason
   ToastMessageShow (msg, True)
   End Sub
   
   When I try to send email, even though my response is a success, I am not receiving any emails. Can you please help me on this.
   Also, If I need to pass parameters to my web service, how can I achieve the same?
   
   I tried the above using

   HttpClient

   instead of

   OkHttpClient

   , but i am getting exception:

   If HttpClient1.Execute(request, 1) = False Then
   

   1. javac 1.8.0_76-release
      src\b4a\EnTrackBLE\actmonitor.java:405: error: cannot access ClientProtocolException
      if (_httpclient1.Execute(processBA,_request,(int) (1))==anywheresoftware.b4a.keywords.Common.False) {
      ^
      class file for org.apache.http.client.ClientProtocolException not found

 

[Erel]

You should never use HttpClient or OkHttpClient directly. Use OkHttpUtils2 instead.