Maximize size of Android button text

Question

I had multiple buttons in a LinearLayout horizontally. On a larger device all the button text fit on one line at 20sp text size. However, on a smaller device at 20sp text size, the text of the buttons goes to two lines.

How can I tell it to make the text size as big as possible so that text stays on one line?

Yes, but that does not work as then it just cots off the letters that would go on the second line. I need the text to be resized when there isn't enough space, not for the text to be truncated. — Amandeep Grewal, May 27 '11 at 19:56
Ah I see, it sounds the property `singleLine` will be more what you are looking for. — Sam, May 27 '11 at 20:01
Nope, now it puts "..." at the end instead, not resizing the text. — Amandeep Grewal, May 27 '11 at 20:21

Noah · Answer 1 · 2012-03-09T13:17:15.217

This works for me ... you will need to customize for your needs:

// Determine Scaled Density for later calculations
Display dd = ((Activity) m_Context).getWindowManager().getDefaultDisplay();
DisplayMetrics dm = new DisplayMetrics();
dd.getMetrics(dm);
float m_ScaledDensity = dm.scaledDensity;

Rect bounds = new Rect();
Paint p = new Paint();
p.setTypeface(btn.getTypeface());

// W is a very wide character
String sample = "NeedsToFIt"
int maxFont;
for (maxFont= 1
    ; -bounds.top <= btn.getHeight() && bounds.right <= btn.getWidth()
    ; maxFont++) {
  p.setTextSize(maxFont);
  p.getTextBounds(sample, 0, sample.length(), bounds);
}
maxFont = (int) ((maxFont - 1) / m_ScaledDensity);
btn.setTextSize(maxFont);

Also, this doesn't take into account the button padding. – Vanuan Jun 09 '12 at 18:32 — Vanuan, Jun 09 '12 at 18:32

score 0 · Answer 2 · answered Jun 09 '12 at 22:31

0

The only solution that worked for me: Resize Text to Fit the View in Android [source code]

In short, override the onDraw method to suit your needs.

answered Jun 09 '12 at 22:31

Vanuan

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Houcine · Answer 3 · 2011-05-27T20:11:01.900

0

you can get the screen resolution , and in your code, you can adapt the size of the text of your buttons by changing the LinearLayout.LayoutParams

EDIT : algorithm

First : get the screen resolutions, to see if your phone is a small,meduim or big .(to do this , use the class : DisplayMetrics )

Second : in your code , you will test for every type of size ( in general i think 3 : small , meduim,big ) , and modify the textSize of your buttons like this :

btn.setTextSize(float size ) ;

edited May 27 '11 at 20:11

answered May 27 '11 at 19:54

Houcine

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2

How would I adjust the text size based on screen width? What would be the algorithm? – Amandeep Grewal May 27 '11 at 19:57
2

That won't work, as I already account for different densities using the "sp" size. – Amandeep Grewal May 27 '11 at 20:24

Maximize size of Android button text

3 Answers3