Android Question Blank text retrieval from sqlite db

WofaCle

Member
The Attached image is the result i get whenever i run the app please help me fix it
I am retrieving the text from sqlite db browser but the text thats no appear on Labelforlg


B4X:
Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.
    
    
    Dim strUtils As StringUtils
    Private LG_ScrollView As ScrollView
    Private Labelhead1 As Label
    Private LabelforLg As Label
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("LGPageDetails")
    LG_ScrollView.Panel.LoadLayout("lgdetaillbl")
    
    Dim rs As ResultSet
    rs = Starter.SQL1.ExecQuery("SELECT * FROM LGDetails WHERE PageTitle = '" & Starter.PageTitle & "' ")
    Do While rs.NextRow
        
        LabelforLg.Text = rs.GetString("Body")
        Labelhead1.Text = rs.GetString("PageTitle")
        LG_ScrollView.Panel.Height = LabelforLg.Height
        LabelforLg.Height = strUtils.MeasureMultilineTextHeight(LabelforLg, LabelforLg.Text)
                
    Loop
    rs.Close
End Sub
 

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You set the height of the scrollpane to the height of the label. Then you modify the height of the label.
Maybe the height is no longer correct.
With a small project, we could test and find out what's wrong
 
Upvote 0
Have you logged rs.GetString("Body") to check what is actually being returned from the query? In any case you should look at item 5 in Erel's "Code Smells". But I think that @zed is probably right - you seem to be using LabelforLg.Height before you have set the value.
 
Upvote 0
Have you logged rs.GetString("Body") to check what is actually being returned from the query? In any case you should look at item 5 in Erel's "Code Smells". But I think that @zed is probably right - you seem to be using LabelforLg.Height before you have set the value.
Yes i tried logged the rs.GetString("Body") and it worked. Also i retrieved the query again by selecting only the table it also worked but after adding Starter.PageTitle to it thats where comes blank on the label please @zed please help me with the height of the scrollpane and tge label am using current version 12.8
 
Upvote 0
According to the answer in post #2, have you tried this, ?

B4X:
    Do While rs.NextRow
        
        LabelforLg.Text = rs.GetString("Body")
        Labelhead1.Text = rs.GetString("PageTitle")
        LabelforLg.Height = strUtils.MeasureMultilineTextHeight(LabelforLg, LabelforLg.Text)
        LG_ScrollView.Panel.Height = LabelforLg.Height
    Loop

Inverting the two last lines in the loop.
 
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