CODEWITHSUNDEEP
androidcformattingjava-native-interfacedouble
CVA
CVA

Reputation: 1567

convert a double scientific notation to decimal notation in JNI

I have jdouble(double) value coming in from my activity which when printed gives in scientific notation i.e in E format. Now i want to show it in decimal format and truncate it so i used "%.2f" in my format specifier to do that. But weirdly the "%f" format specifier is showing 0.000000 as the final value. please suggest some advice.

P.S I'm doing this on the native side of android.

Upvotes: 0

Views: 312

Answers (1)

algarrobo
algarrobo

Reputation: 304

In order to show decimals instead of E format notation and truncate a number you can use NumberFormat:

 NumberFormat formatter = new DecimalFormat("#0.000");

An then, where you want to use your number:

formatter.format(yournumber)

e.g.:

Toast.makeText(context, "Truncated number: " + formatter.format(yournumber), Toast.LENGTH_LONG).show();

In this case, your number will be shown with 3 decimals. Add as many zeros as decimals you want to show.

Upvotes: 1

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