CODEWITHSUNDEEP
androidpixeldpippi
Pavan Jaju
Pavan Jaju

Reputation: 893

Android Convert Pixels to inchec, millimeter

I want to accurately convert pixels to inches and mm. I had tried to use all the properties of displayMetrics but was unsuccessful in getting the exact physical units in mobile. I also tried to use TypedValue.applyDimension but as the documentation is not much explanatory still was unlucky.

This is the code I tried with displayMetrics

displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);

when I try to get Pixels Per Inch by using displayMetrics.ydpi or displayMetrics.xdpi, I am not getting the exact values as I am checking it by drawing a line of that much length on canvas and checked with actual ruler.

Upvotes: 3

Views: 3355

Answers (1)

Heriberto Rivera
Heriberto Rivera

Reputation: 421

try this

DisplayMetrics mDisplayMetric = this.getApplicationContext().getResources().getDisplayMetrics();
float anyPixel = View.getMeasuredWidth(); //you can get Pixel from anywhere, it is a example from view
float widthInches =  TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_IN, size.x, mDisplayMetric);

Upvotes: 2

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