Android Question Firebase database and JSON

[mariosteffen]

Does anybody have an example of B4A code to write JSON strings on a Firebase Database using HTTP POST method ?

Thanks.

 

[mariosteffen]

My code is:
Dim fullname As String
Dim UrlFIrebase As String
Dim a As Map
a.Initialize
a.Put("name","xyz")
a.Put("family","abcd")
Dim Jsongen As JSONGenerator
Jsongen.Initialize(a)
fullname=Jsongen.ToString
Dim b As HttpRequest

UrlFIrebase="https://abcxyz.firebaseio.com/test/2.json"
b.InitializePost2(UrlFIrebase,fullname.GetBytes("UTF8"))
b.SetContentType("application/json")
Dim CliHttp As HttpClient
CliHttp.Initialize("CliHttp")
CliHttp.Execute(b,1)

I am using B4A version 8 and the last version of the B4A bridge. The libraries are Core, HTTP, JSON and OkHttp.
If I test on a real device on debug mode, it works fine, but if I change to Release mode the program writes the data and stops after that with the error "B4A example stopped".

Any ideas to solve this ?

Thanks in advance.

 

[DonManfred]

Please use [CODE]code here...[/CODE] tags when posting code.

 

[DonManfred]

If I test on a real device on debug mode, it works fine, but if I change to Release mode the program writes the data and stops after that with the error "B4A example stopped".

Check the log. there must be an errormessage

 

[mariosteffen]

Hi, DonManfred. Thanks for your help.

I added the BridgeLogger: true option and the result is below:

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
java.lang.Exception: Sub clihttp_responsesuccess was not found.
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:192)
at anywheresoftware.b4a.BA$2.run(BA.java:360)
at android.os.Handler.handleCallback(Handler.java:808)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
at dalvik.system.NativeStart.main(Native Method)

 

[DonManfred]

It is a mistake to use the httpclient client

Use okHTTPutils2

 

[mariosteffen]

Hi, DonManfred.
I changed to OkHttpUtils2 and the problem still happens.
I used a cell phone with Android 5, another cell phone with Android 7 and a tablet witht Android 4.4.

Logger connected to: motorola XT1572
--------- beginning of crash
--------- beginning of main
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
java.lang.Exception: Sub clihttp_responsesuccess was not found.
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:192)
at anywheresoftware.b4a.BA$2.run(BA.java:360)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)

Any ideas ? As I said on the first message, my needs are really simple. I want to write json strings on a firebase database. I could not find any example on the forums.

Regards.

 

[DonManfred]

You are still using the httpclient instead of okhttputils.

Check this (b4J) Example. The Code should work with B4A too as it uses jhttputils so it should woth if you just reference okhttputils2 library instead.

 

[mariosteffen]

Hi, Manfred. I solved my problem with the code below, based on this post: https://www.b4x.com/android/forum/t...s-firebase-cloud-messaging-fcm.67716/#content

Thanks for your help.

Sub WriteJson(Key As String, Value As String)
Dim Job As HttpJob
Job.Initialize("fcm", Me)
Dim m As Map = CreateMap(Key:Value)
Dim jg As JSONGenerator
jg.Initialize(m)
Job.PostString("https://abcxyz.firebaseio.com/test/abc.json", jg.ToString)
Job.GetRequest.SetContentType("application/json;charset=UTF-8")
Job.GetRequest.SetHeader("Authorization", "key=" & "put the auth key here")
End Sub

Sub JobDone (Job As HttpJob)
Log(Job)
If Job.Success Then
Log(Job.GetString)
End If
Job.Release
End Sub