1 public static int getDpi(Context context) {
 2         int dpi = 0;
 3         WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
 4         Display display = windowManager.getDefaultDisplay();
 5         DisplayMetrics displayMetrics = new DisplayMetrics();
 
 6         @SuppressWarnings("rawtypes")
 7         Class c;
 8         try {
 9             c = Class.forName("android.view.Display");
10             @SuppressWarnings("unchecked")
11             Method method = c.getMethod("getRealMetrics", DisplayMetrics.class);
12             method.invoke(display, displayMetrics);
 
13             dpi = displayMetrics.heightPixels;
14         } catch (Exception e) {
15             e.printStackTrace();
16         }
17         return dpi;
18     }