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So I create a background of every label as much as its text is. That works perfectly. If beforebtnslength > Activity.Width Then ycounter = ycounter + 1 beforebtnslength = 0 Else If beforebtnslength + SQLReader.GetString("name").Length*3%x > Activity.Width Then ycounter = ycounter + 1
link: 1. The layout anchors are wrong. 2. You are not using B4XPages which is a programming mistake. 3. Other than that I don't understand anything from thi
link: Thanks for the answer Erel! My whole code is about 1000 lines. I tried to write only the part I create the labels. What do you mean the layout anchor

You should read the documentation for Canvas. A Canvas is an object that draws on other views or (mutable) bitmaps. When the canvas is initialized and set to draw on a view, a new mutable bitmap is created for that view background, the current view's background is copied to the new bitmap and the ca
link: If there a "conflict" between 9Patch and canvas MeasureStringWidth or, as always :D, I'm doing something wrong? If I use canvas MeasureStringWidth af
link: Thank you, Klaus. I want to set the label width at runtime; initially, I set it to a maximum I want to allow (85%x) but if the text width (+ label
link: The latest routine: Sub AdjustLabel(Lbl As Label, OriginalWidth As Int, OriginalHeight As Int) Dim cnv As Canvas Dim bmp As Bitmap bmp.Ini

Initialize("") Label1.TextSize = 18 'Add the Label onot the HorizontalScrollView HorizontalScrollView1.Panel.AddView(Label1, 0, 0, 100dip, HorizontalScrollView1.Height) 'Remove the horizontal scrollbar Private jo = HorizontalScrollView1 As JavaObject jo.RunMethod("setHorizo

Sure. Your Canvas1 hasn't been initialized so it is still NULL. Canvas1 would normally be the canvas of the view you are going to write to. Canvas1.Initialize(Panel1) width = Canvas1.MeasureStringWidth(t, Typeface.DEFAULT, 14) or you can use a Bitmap Private MyBitmap as Bitmap MyBitmap.Initializ
link: I run the sample code: Dim Canvas1 As Canvas Dim width As Float Dim t As String t = "Text to write" width = Canvas1.MeasureStringWidth(t, Typeface.D
link: you did not initialize the canvas?
link: Yes, I tried to initialize it with a label generated from codes. But it does not work. Dim Canvas1 as Canvas Dim lbl as Label Dim width as Float Labe

I am using an Android Canvas and the function MeasureStringWidth to measure the text drawn in the canvas by the DrawText function. I have tested it with several TT fonts and font sizes, with the same bad results. The value given by MeasureStringWidth is a bit longer that the value of pixels of the
link: 1. https://www.b4x.com/android/forum/threads/b4x-xui-accurate-text-measurement-and-drawing.92810/#content 2. Get Canvas from B4XCanvas: https://www.b4

Now seeing the code I found the problem. In the Ideal_Text_Size method a Canvas is assigned to the Button, and this new assignment overrides the StateListDrawable definition. If you modify the Ideal_Text_Size method like below, commenting all lines concerned by the Canvas the Buttons behave as expec

Canvas.MeasureStringWidth calls the native Paint.measureText method to measure the width. After I removed the following line: Label1.Width=Label1.Width-1dip I see a difference of less than 1dip between the two results. It seems like a rounding error as suggested by the link @stevel05 posted. Note
link: There is an interesting explanation here: http://stackoverflow.com/questions/7549182/android-paint-measuretext-vs-gettextbounds.
link: and in addition canvas can't measure the width of Tab in a text :) good night
link: hi erel i think some times canvas return wrong values for MeasureStringWidth i think when the text completely is fit in a view,then the width of text

Label1.Width=cnv.MeasureStringWidth(Label1.Text,Label1.Typeface,Label1.TextSize) if the layout set to "AutoScaleAll" the result is accurate but when I disable it, it doesn't measure the string right am I missing something?
link: AutoScaleAll slightly changes the font size. This is all that it does.
link: 90399 worked well on another device does B4XCanvas use the same system API for measurement?

Canvas.MeasureStringWidth expects a string, not a CharSequence (CSBuilder). It will ignore the string attributes. I guess that the simplest solution will be to add a small gap as a compensation for this.
link: Is there an alternative way to calculate the label width with different typeface? cs.Initialize().Typeface(Typeface.FONTAWESOME).Size(Starter.su

why are you using MeasureStringHeight if you want to set label based on its length? try changing your code to this itmheight = Canvas1.MeasureStringWidth(msggtext, Typeface.DEFAULT, globalfontsize)
link: i have tried the following globalfontsize = "12" itmheight = Canvas1.MeasureStringHeight(msggtext, Typeface.DEFAULT, globalfontsize) Label1.TextSize

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