Android Question Measure Height of a String?

[ilan]

hi

i found lots of thread on how to measure the height of a string but i want something different.
i want to add a label to a clv. i know the width of the clv and i want to add a single label to each clv item. but how can i know the Height of the label?
the width of the label is the same as the clv width but how do i measure the height of the label so the text will fit inside?

i need to measure the string with his typeface and textsize that should fit in a specific width (clv width) but height is unknown!

any help would be very much appreciated

thanx

 

[TILogistic]

Do you want something like this?

[B4X] Free Geolocation Nominatim (Geocoding API)

Here's a demo of how to use the nominatim geocoding API for free. Note: There are other geocoding options if you want to know, leave your comments. Demo file attached Sub GeoCoderNominatim(Query As String) As ResumableSub Dim ResultURL As String Dim j As HttpJob Dim Parameter() As...

www.b4x.com

 

[Andrew (Digitwell)]

@ilan

This is exactly what measureMultiLinetext does. Given a width, font and text, calculate the height.

Here is a sample project, I posted before.

how to make views align vertically and shrink base on dynamic text content?

Hi, I have a stack of views: imageview, label, and a few checkboxes that load its content dynamically (check the picture), how I can align them vertically ? avoiding blank spaces ? shrinking the height of each

www.b4x.com

 

[TILogistic]

Do you want something like this?

[B4X] Free Geolocation Nominatim (Geocoding API)

Here's a demo of how to use the nominatim geocoding API for free. Note: There are other geocoding options if you want to know, leave your comments. Demo file attached Sub GeoCoderNominatim(Query As String) As ResumableSub Dim ResultURL As String Dim j As HttpJob Dim Parameter() As...

www.b4x.com

AddTextItem or InsertAtTextItem.
These methods add a panel with a label to CLV and adjust the height of the label to the content.

see the source code for customlistview.

    Dim pnl As B4XView = CreatePanel("")
    Dim lbl As B4XView = CreateLabel(Text)

 

[ilan]

thanx guys, i found the answer 5 minutes after writing this post and it was infront of my eyes:

StringUtils does exactly what i wanted, it gives me back the height i need to set to the label and this is what i needed although its not very accurate but its good enough for me. (the reason it is less accurate may be because of me using Hebrew letters but i am not sure, anyway it is a good solution for my problem )

thank you all!

 

[TILogistic]

See code source customlistview (b4A)

StringUtils

lbl.Height = su.MeasureMultilineTextHeight(lbl, txt)

Private Sub CreateLabel(txt As Object) As B4XView
    Dim lbl As Label
    lbl.Initialize("")
    lbl.Gravity = DesignerLabel.Gravity
    lbl.TextSize = DesignerLabel.TextSize
    lbl.Typeface = DesignerLabel.Typeface
    lbl.SingleLine = False
    lbl.Text = txt
    lbl.Width = sv.ScrollViewContentWidth - 10dip
    lbl.Height = su.MeasureMultilineTextHeight(lbl, txt)
    Return lbl
End Sub

 

[epiCode]

.... although its not very accurate ....

I had same challenge for non-English fonts
Try this >>> https://www.b4x.com/android/forum/t...value-which-crops-the-text.132609/post-852481

 

[ilan]

I had same challenge for non-English fonts
Try this >>> https://www.b4x.com/android/forum/t...value-which-crops-the-text.132609/post-852481

thanx but in my case the label height is to big when there is more text so your solution will make it bigger.
it is less important to me. i dont need it to be to much accurate but i wonder how Whatsapp is doing the calculation. you can see it doesnot matter what language you are using the height is very precise according to the text.

 

[ilan]

if i am not wrong i remember that @Erel has an example for such a chat application but i could not find it. i am sure he used xclv for that.

 

[TILogistic]

?

Responsive Chat Example

Hi All. I made this example for a chatbot app here on brasil and now i want to share it here. This example use xCLV and IME lib (Already in B4A). The messages fit both vertically and horizontally, making them fully responsive. Note: The text field expands according to the text size...

www.b4x.com

 

[Erel]

1. CLV.AddTextItem will measure the height for you.
2. The most advanced chat example is here: https://www.b4x.com/android/forum/t...todon-pleroma-social-networks.124214/#content

 

[ilan]

1. CLV.AddTextItem will measure the height for you.

i tried it erel but the results are not good. not all the text is visible.

2. The most advanced chat example is here: https://www.b4x.com/android/forum/t...todon-pleroma-social-networks.124214/#content

thanx, i will have a look at is but haven't you also posted a whatsapp kind of chat app?

 

[Erel]

You are probably talking about this one: [B4X] Cross platform chat layout example

 

[ilan]

example:

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("Layout")
    
    For i = 0 To 10
        CustomListView1.AddTextItem(getrandomtext(Rnd(100,300)),i)
    Next
End Sub

Private Sub getrandomtext(num As Int) As String
    Dim allowedChars As String = "אבגדהוזחטיכלמנסעפצקרשתךףן 1234567890"
    Dim returnTxt As String
    For i = 0 To num
        Dim index As Int = Rnd(0,allowedChars.Length)
        returnTxt = returnTxt & allowedChars.CharAt(index)
    Next
    Return returnTxt
End Sub

 

[ilan]

You are probably talking about this one: [B4X] Cross platform chat layout example

i knew that i am not senile
that's the example i was looking for thank you erel!!

 

[TILogistic]

?

 

[ilan]

?