CODEWITHSUNDEEP
androidscalaline-breaks
src091
src091

Reputation: 2847

Nonbreaking colon in Android

I have the following line of text: address:345346943693495349534963 I want this line to always break like this (exact breaking point is not important but it should not be a colon):

address:3453469436934
95349534963

On my Android 4.2.2 device it breaks as above, but on Android 6.0 emulator it behaves differently:

address:
345346943693495349534963

How do I make a breaking behavior consistent across all devices?

I get different results when I draw a text on canvas, here's the code (in Scala):

def paint = {
    val newPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG)
    newPaint setTextSize getResources.getDimensionPixelSize(R.dimen.text_size)
    newPaint setTypeface Typeface.create("Droid Sans", Typeface.NORMAL)
    newPaint setTextAlign Paint.Align.CENTER
    newPaint setStyle Paint.Style.FILL
    newPaint setColor Color.BLACK
    newPaint
}

def drawText(canvas: Canvas, text: String, x: Float, baseY: Float) = {
    val layout = new StaticLayout(text, paint, textBounds, ALIGN_NORMAL, 1.0f, 0.0f, false)
    val y = baseY - layout.getHeight / 2f

    canvas.save
    canvas.translate(x, y)
    layout draw canvas
    canvas.restore
}

drawText(canvas, gText, bitmap.getWidth / 2, topSize / 2)

Upvotes: 1

Views: 942

Answers (3)

Daniele Segato
Daniele Segato

Reputation: 12909

It looks like you are looking for the Word Joiner unicode codepoint https://en.wikipedia.org/wiki/Word_joiner

It's also know as Zero Width no-break space (ZWNBSP).

According to this other question: Zero-width line breaking space for Android

it should be supported on Android since version 5 (Lollipop). The same goes for soft-hypen (suggested in PhilLab response).

I would suggest you to try it out, you can write it as ​ in the XML resource string. Put it between the colon and the number.

If it doesn't work before Lollipop and you need support for previous platform the only other thing I can think about is measuring the text, character by character and, knowing the available width of your view (which you have to compute separately), manually add a new line in the text where you want it to split.

You can see how the Text measurement works in Android by reading this article: https://chris.banes.me/2014/03/27/measuring-text/

Maybe there's a way to do it using Spans too, but I'm not aware of any.

Upvotes: 2

Krunal Patel
Krunal Patel

Reputation: 61

    before draw a text on canvas follow following step and 

               String temp = "address:345346943693495349534963";
               String firstString=temp.substring(0, 21);
               [![enter image description here][1]][1]String secondString = temp.substring(20);
               String finalString = firstString+"\n"+secondString;

    now finally draw a text on canvas with "finalString",and if set text in textview then set final string in textview.

               TextView yourTextView = (TextView) findViewById(R.id.txt1);
               yourTextView.setText(finalString);


  [1]: https://i.sstatic.net/godJJ.png

Upvotes: 0

PhilLab
PhilLab

Reputation: 5017

You could use soft hypens (\u00AD) which you have to place at several points in your number string:

address:3\u00AD453469\u00AD4369\u00AD349534953\u00AD4963

Unfortunately, this will render the hyphens, I don't know if that is okay for you:

address:3453469436934-
95349534963

This also works with the android:text attribute of TextViews.

P.S: I also thought about using Html like this:

Html.fromHtml("<span style="display: inline-block;">address:3</span>45346943693495349534963");

but unfortunately I could not make it work in Android

Upvotes: 0

Related Questions