What is the correct way to specify dimensions in DIP from Java code?

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There is an existing utility method built called TypedValue.applyDimensions(int, float, DisplayMetrics) that does this.

Here’s how to use it:

// returns the number of pixels for 123.4dip
int value = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 
                     (float) 123.4, getResources().getDisplayMetrics());

There’s a list of other types that you can use with it including COMPLEX_UNIT_SP, COMPLEX_UNIT_PT all found in the page I linked above. If you exclude the (int) typecast, you’ll get the floating point number.

I encountered the same problem and found this through poking around the code.

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