Here you can find the source of px2dip(Context context, float pxValue)
public static int px2dip(Context context, float pxValue)
//package com.java2s; import android.content.Context; public class Main { public static int px2dip(Context context, float pxValue) { final float scale = getDensity(context); return (int) (pxValue / scale + 0.5f); }/* ww w. j a v a2 s . com*/ /** * * @param context * @return */ public static float getDensity(Context context) { return context.getResources().getDisplayMetrics().density; } }