How can I set a minimum width (in characters) for a TextView?

Question

I've had a good search for this on here and can't find a solution.

I have a TextView in a RelativeLayout which contains an integer number. The number will range between 1 and 99 - can anyone tell me how to size the TextView so that its width is always the width of the string "99" even if it only contains "1"?

I need this because the positions of the components to the right of this TextView depend on its width, so all are position depending on how many digits the TextView contains.

I don't mind if this is done in XML or code - I just want to avoid having to set the width of a TextView in pixels!

Thanks for any possible solutions; Please ask if I've missed out any important info!

Answer 1

try this:

android:layout_width="wrap_content"
android:minEms="2"

Answer 2

Ems works if your font is monospace. For proportional fonts, you want it the width of two '0's, not two 'm's. You can fall back to TextPaint.measureText like so:

float measureText = zip.getPaint().measureText("00000");
zip.setWidth(zip.getPaddingLeft() + zip.getPaddingRight() + (int) measureText);

Answer 3

Best way is to use TextPaint . Here is a simple example:

TextPaint textPaint = new TextPaint();
textPaint.setTextSize(yourTextView.getTextSize());
yourTextView.setMinWidth((int) textPaint.measureText("-88.88"));

Do not forget to specify text size in your TextPaint object
In measureText enter longest possible string you're expecting to see (I've written "-88.88" assuming my text can handle positive or negative numbers below 100 with 2 digits after comma)

Answer 4

I think you're looking for the getTextBounds() method in the Paint class. Didn't try it myself tho.

Answer 5

简单的解决方案，将 textview 的字体设置为 Monospace。

android:typeface="monospace"

Answer 6

使用 TextView 的android:maxLength属性。请阅读此内容