Java tutorial
//package com.java2s; import android.content.Context; import android.util.DisplayMetrics; import android.view.WindowManager; public class Main { public static int getDeviceDPI(Context context) { DisplayMetrics metrics = new DisplayMetrics(); WindowManager mgr = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); mgr.getDefaultDisplay().getMetrics(metrics); return metrics.densityDpi; } }