Android - Convert/Display A Proper Value

Question

I'm developing an android application recently and I found out that the display of the output are quite weird especially when it comes to number.

For example, after going through a formulation.

The value shown on the TextView is 1.5460385687E-11

My question is, how can I display the current above output in a proper way such as 1.546E-11 or 1.546x10^11 ?

As requested, my code for displaying to the output.

double result = tPower * tGain * rGain * Math.pow(lamda / (4 * Math.PI *distance),2)/ light / 100;
((TextView)findViewById(R.id.textFreeSpacePrw)).setText(Double.toString(result));

could you post some of the code you are using? – Yuchen Apr 12 '15 at 15:18 — Yuchen, Apr 12 '15 at 15:18
I have edited my post with the code above – Beta Tracks Apr 12 '15 at 15:42 — Beta Tracks, Apr 12 '15 at 15:42

score 0 · Answer 1 · answered Apr 12 '15 at 17:07

You could use a DecimalFormat to format the result of your calculation before adding it to the TextView. The DecimalFormat class is configured using a pattern given in the constructor, such as "0.###E+0"

See http://developer.android.com/reference/java/text/DecimalFormat.html

Android - Convert/Display A Proper Value

1 Answers1