Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
920 views
in Technique[技术] by (71.8m points)

android - java equivalent to printf("%*.*f")

In C, the printf() statement allows the precision lengths to be supplied in the parameter list.

printf("%*.*f", 7, 3, floatValue);

where the asterisks are replaced with first and second values, respectively.

I am looking for an equivalent in Android/Java; String.format() throws an exception.

EDIT: Thanks, @Tenner; it indeed works.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

I use

int places = 7;
int decimals = 3;

String.format("%" + places + "." + decimals + "f", floatValue);

A little ugly (and string concatenation makes it not perform well), but it works.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...