Here you can find the source of convertDpToPixel(Context context, float dpValue)
public static float convertDpToPixel(Context context, float dpValue)
//package com.java2s; import android.content.Context; import android.content.res.Resources; import android.util.DisplayMetrics; public class Main { public static float convertDpToPixel(Context context, float dpValue) { Resources resources = context.getResources(); DisplayMetrics metrics = resources.getDisplayMetrics(); return dpValue * (metrics.densityDpi / 160f); }//from w w w. ja v a 2 s . c om }