Question

I am able to find the screen width using getWindowManager().getDefaultDisplay(). Now I want to know how can I get value in dp from the value that I got which is in pixel. For example, suppose I got a width of the screen using this code:

Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();

Now the width I got is in pixel, how do I convert it into dp.

Please help me to solve this out. I have seen in the android documentation but don’t get to know how to implement it.

Answer 1

If you want to convert dp values to pixels u can use following formula:

DisplayMetrics metrics = getWindowManager().getDefaultDisplay().getMetrics(metrics);
float logicalDensity = metrics.density;
int px = (int) (dp * logicalDensity + 0.5);

To get dp from pixels, divide the density into the pixel value rather than multiply.