Android Question MYSQL I NEED GET DATA

Good afternoon Erel, for months I have this problem,
in the past I tried to ask for your help,
but for language problem I ended up giving up,
From what I imagine you could end my doubt with 3 or 4 lines, Because the data I want is there and visible, I just do not know the command to extract the data!
I've even done a routine to decode the mounted string but it makes the process slow!
Give me what it takes so you can help me?
I used a photo so I can see how simple it is!
When I get the result of a SELECT through http everything works but if I use MYSQL it does not!
Please help me with this if you understood the Google translation.


I need to get the contents of the field by the name of the field, and not go looking in a string for its position

I used this routine to work around the problem but this I know is not the correct solution
c1= G.CHOOSE(1,S,",") 'CRM

Public Sub CHOOSE(I As Int, S As String,SP As String) As String
Dim J As Int
Dim PA As Int
Dim K As Int
Dim F As Int
Dim P As Int
Dim M As Int
Dim V As String
If I=1 Then
J=InStr(S,SP)

If J=0 Then J=Len(S)
V=sf.Trim(sf.Mid(S,2,J-2))
Return V
Else
F=InStr(S,"]")
J=InStr(S,SP)
K=1
For K=2 To I
PA=J
J=InStrI(J+1,S,SP)
If J=0 Then J=F-1
If J=PA Then J=F-1
Next

P=PA + 2
M= J - P +1
V=sf.Trim(sf.Mid(S,P,M))
Return V

End If

End Sub

Someone help me with this please ...

Hi macerau

So you've got some data in a MySQL database and want to read that data from the database?

You're not trying to access a SQLite DB are you?

Is the database located on your Android device or remotely?

For SQLite I use something like this


Is the problem that you've gone past the number of rows in that table? You count to 11 but of course you'd go from 0-11 so actually 12 records. Are there at least 12 records in that table? This is why my code above uses .RowCount-1... This might solve your problems - have you stepped through that code to see how many times it iterates through?

Hope this helps

I guess you're using mssql lib. I know nothing about it, but from the documentation, I guess you should dim m as list.

mc73 said:

I guess you're using mssql lib. I know nothing about it, but from the documentation, I guess you should dim m as list.

Click to expand...

Thanks for trying to help, but the documentation link is very poor information!

eps said:

Hi macerau

So you've got some data in a MySQL database and want to read that data from the database?

You're not trying to access a SQLite DB are you?

Is the database located on your Android device or remotely?

For SQLite I use something like this

B4X:

Dim SQL1 As SQL

    Cursor = SQL1.ExecQuery("SELECT _id, name,column1,column2 FROM table order by name")

    For i=0 To Cursor.RowCount-1

        Cursor.Position=i

         nameVar = Cursor.GetString("name")

    Next

    Cursor.Close

Is the problem that you've gone past the number of rows in that table? You count to 11 but of course you'd go from 0-11 so actually 12 records. Are there at least 12 records in that table? This is why my code above uses .RowCount-1... This might solve your problems - have you stepped through that code to see how many times it iterates through?

Hope this helps

Click to expand...

Eps, I was happy for your efforts to help me, but the expression
Cursor = db.Query (("select REGISTRY, RA from consu.orcB")
is not accepted because db.query is Java.util.Arraylist!
As you can see from the Screenshot the values are in the Java.util.Arraylist type variable and I think the people who developed B4A would have my answer ready!
The database is MySql itself and this remote!
But I do not know what else to do to get their attention to help me!
And I have been their clients since the beginning of development!

People like you are who encourage us to continue Thank you
Raul

The list returned from db.query is a list of arrays(each element of the list is a selected ROW)
you must define m as list and look at each element as an array.
I use JRDC to handle remote DB and I never used that library and I don't think it's no more supported.

Mauro

As you made 10 posts about this in the PHP + MySQL tutorial I guess that you are using the PHP script.

What is the type of db?

tigrot said:

The list returned from db.query is a list of arrays(each element of the list is a selected ROW)
you must define m as list and look at each element as an array.
I use JRDC to handle remote DB and I never used that library and I don't think it's no more supported.

Mauro

Click to expand...

How will put in list the fields from rows list ?
(need to be for every line and how ? - need small example)

Hi magma. I'll be out till late tomorrow
Hope to aswer asap

never mind - thank you