Android Question Creating a SQL query using input from multiple activities?

gareththomasnz · Jul 29, 2015

I am making a CRUD app for a client

He has asked that I have input fields across multiple screens

The user inputs to a couple of fields - hits the next button and proceeds to the next screen

In all there are 7 input screens and a save to database button on the last screen

I have put each screen into its own activity so the user can use the back button of the device

The add (to database) is a sub on the first activity - I can use callsub on the last activity to call this

But I am thinking if each screen (activity) has some input of the fields how do I get the add sub in the first activity to get the field data from those other activities?

B4X:

Sub AddEntry

    Dim Query As String

Query = "INSERT INTO User VALUES (NULL, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"
        SQL1.ExecNonQuery2(Query, Array As String(rdbMr.Checked , rdbMrs.Checked, rdbMiss.Checked, rdbElecInsp.Checked, rdbSparky.Checked, _
        rdbTech.Checked, rdbOther.Checked, txtFirstName.Text, txtMidName.Text, txtLastName.Text, txtPersEmail.Text, _
        txtPerPh.Text, txtPerCell.Text, txtPerWork.Text, txtStreet.Text, txtCity.Text, txtSuburb.Text, txtRego.Text, txtEmpComp.Text, _
        txtCompAddress.Text, txtEmpTown.Text, txtContact.Text,txtCompPhone.Text, txtCompEmail.Text, rdbNN.Checked, rdbCR.Checked, txtSiteSf.Text))
     
        ToastMessageShow("Entry added", False)    ' confirmation for the user

End Sub

I am just looking in the following for an answer:

https://www.b4x.com/android/forum/threads/passing-a-parameter-from-activity-a-b.9763/

https://www.b4x.com/android/forum/threads/two-activities-example.6611/#post38609

https://www.b4x.com/android/forum/threads/android-process-and-activities-life-cycle.6487/#post37980

Mahares · Jul 29, 2015

One way I would do it is:
1. Declare Process-Global variables in the main activity: exple: Dim Street as String
2. If txtStreet.Text is input in the 3rd activity, you can have : Main.Street =txtStreet.Text
3. Finally, when you are ready to save the SQLite record in the main activity, you use this in the query: Main.Street instead of txtStreet.Text

gareththomasnz · Jul 29, 2015

One question:

Main.Street =txtStreet.Text

Goes into the first activity or third?

Mahares · Jul 29, 2015

It goes in the 3rd activity

gareththomasnz · Jul 29, 2015

OK thanks for your help

yes and in Main it just needs Street not Main.Street

DonManfred · Jul 30, 2015

gareththomasnz said:
yes and in Main it just needs Street not Main.Street

correct

gareththomasnz · Aug 4, 2015

The save button is in activity eight & the actual sql sub is in activity one

I just tried CallSubDelayed and lucky for me that works as the screen goes back to activity 1 upon saveing

OK so I know that works - the next problem for me is checking if the data is actually added correctly to the database

It is creating the entry in the database - BUT - only the data from the first activity is going into the database

All the other fields from the other activities are not passing through - is this because the activities are paused?

I am using the code as suggested in the post above.

Should the following:

Main.Street =txtStreet.Text

Go into Sub Process Globals, Sub Globals or Sub Activity_Create?

I stuck it into Sub Activity_Create which creates no error but wont load up the DB

So I will experiment...

klaus · Aug 4, 2015

You should move Main.Street = txtStreet.Text to Activity_Pause in txtStreets' Activity.
That way whenever the Activity is paused Main.Street is updated.

gareththomasnz · Aug 4, 2015

OK fingers crossed I was just going to try that but backed out LOL - I have it adding the row to the database - just most of the cells didn't load data yet

Hopefully this will work

Thanks

It needs simply to load the data into the database & go back to screen one after pressing
the save button - and show the toast message

So it is all there just not writing to the DB

Help much appreciated if you can explain what is wrong

gareththomasnz · Aug 4, 2015

Admin Password is "applepie"

PS it only created the new row with the Main.Street = txtStreet.text in the sub oncreate in the other modules

this version has it in the on pause & it doesn't even load the new row

eurojam · Aug 4, 2015

Hey Gareth,
I think, theonly problem is in your PanelNine Activity in the Sub Activity_Create when you check your Input as admin.
here you are deleting the database edited before and copy the original database from assets, so the input data will be deleted!
'Put this to comment and it will work!

B4X:

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    'Activity.LoadLayout("Layout1")
   
    If FirstTime Then
       File.Delete(File.DirInternal, "electapp.db") ' <- this produces the error described above...
       
        'check if the database already exists
        If File.Exists(File.DirInternal, "electapp.db") = False Then
            'copy the default DB
            File.Copy(File.DirAssets, "electapp.db", File.DirInternal, "electapp.db")
            'if not, initialize it
            Main.SQL1.Initialize(File.DirInternal, "electapp.db", True)
            'and create it
            'CreateDataBase
            'copy the default DB
            File.Copy(File.DirAssets, "electapp.db", File.DirInternal, "electapp.db")
        Else
            'if yes, initialize it
            Main.SQL1.Initialize(File.DirInternal, "electapp.db", True)
        End If
    End If   
   
    Activity.LoadLayout("blackandwhite")
....
End Sub

gareththomasnz · Aug 4, 2015

Thanks for the reply

Yes I believe with that commented out it did load the new row of data but that row only passed the data from the first panel all the rest was empty

So this is not the only fault (although it clearly is a fault).

Also Erel says Klaus is correct & that it should indeed be in Activity_Pause. It may be that I uncommented the panel nine block while testing that?

Update:

Yes thank heavens it is working now.

It was a combination of the code on panel nine that needed to be commented or removed and the other code that needed to be placed into Activity_Pause.

Phew!!

Android Question Creating a SQL query using input from multiple activities?

gareththomasnz

Member

Mahares

Expert

gareththomasnz

Member

Mahares

Expert

gareththomasnz

Member

DonManfred

Expert

gareththomasnz

Member

klaus

Expert

gareththomasnz

Member

gareththomasnz

Member

eurojam

Well-Known Member

gareththomasnz

Member

Similar Threads

Android Question Creating a SQL query using input from multiple activities?

Member

Expert

Member

Expert

Member

Expert

Member

Expert

Member

Member

Well-Known Member

Member

Similar Threads

Privacy & Transparency

Privacy & Transparency