Should be getting launcher icon DPI from ActivityManager.

Change-Id: Iec1b375568b421220fdbf08de6e7a697d0488e24
diff --git a/src/com/android/launcher2/IconCache.java b/src/com/android/launcher2/IconCache.java
index 2430a6b..4d38cc9 100644
--- a/src/com/android/launcher2/IconCache.java
+++ b/src/com/android/launcher2/IconCache.java
@@ -16,7 +16,9 @@
 
 package com.android.launcher2;
 
+import android.app.ActivityManager;
 import android.content.ComponentName;
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
@@ -24,7 +26,6 @@
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.drawable.Drawable;
-import android.util.DisplayMetrics;
 
 import java.util.HashMap;
 
@@ -53,16 +54,9 @@
         mPackageManager = context.getPackageManager();
         int density = context.getResources().getDisplayMetrics().densityDpi;
         if (LauncherApplication.isScreenLarge()) {
-            if (density == DisplayMetrics.DENSITY_LOW) {
-                mIconDpi = DisplayMetrics.DENSITY_MEDIUM;
-            } else if (density == DisplayMetrics.DENSITY_MEDIUM) {
-                mIconDpi = DisplayMetrics.DENSITY_HIGH;
-            } else if (density == DisplayMetrics.DENSITY_HIGH) {
-                mIconDpi = DisplayMetrics.DENSITY_XHIGH;
-            } else if (density == DisplayMetrics.DENSITY_XHIGH) {
-                // We'll need to use a denser icon, or some sort of a mipmap
-                mIconDpi = DisplayMetrics.DENSITY_XHIGH;
-            }
+            ActivityManager activityManager =
+                    (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
+            mIconDpi = activityManager.getLauncherLargeIconDensity();
         } else {
             mIconDpi = context.getResources().getDisplayMetrics().densityDpi;
         }