Do not use pool of SimpleIconFactory objects in Chooser/ResolverActivity

Disables pooling of SimpleIconFactory objects as it caches
density which could be changed in runtime in tests.

Test: presubmit
Bug: 245354130
Change-Id: I124e02e078ba7e6ed3a42b543698c2758e5d0c0e

core/java/com/android/internal/app/SimpleIconFactory.java

@@ -51,6 +51,7 @@ import android.util.Pools.SynchronizedPool;
 import android.util.TypedValue;
 
 import com.android.internal.R;
+import com.android.internal.annotations.VisibleForTesting;
 
 import org.xmlpull.v1.XmlPullParser;
 
@@ -69,6 +70,7 @@ public class SimpleIconFactory {
 
     private static final SynchronizedPool<SimpleIconFactory> sPool =
             new SynchronizedPool<>(Runtime.getRuntime().availableProcessors());
+    private static boolean sPoolEnabled = true;
 
     private static final int DEFAULT_WRAPPER_BACKGROUND = Color.WHITE;
     private static final float BLUR_FACTOR = 1.5f / 48;
@@ -92,7 +94,7 @@ public class SimpleIconFactory {
      */
     @Deprecated
     public static SimpleIconFactory obtain(Context ctx) {
-        SimpleIconFactory instance = sPool.acquire();
+        SimpleIconFactory instance = sPoolEnabled ? sPool.acquire() : null;
         if (instance == null) {
             final ActivityManager am = (ActivityManager) ctx.getSystemService(ACTIVITY_SERVICE);
             final int iconDpi = (am == null) ? 0 : am.getLauncherLargeIconDensity();
@@ -106,6 +108,17 @@ public class SimpleIconFactory {
         return instance;
     }
 
+    /**
+     * Enables or disables SimpleIconFactory objects pooling. It is enabled in production, you
+     * could use this method in tests and disable the pooling to make the icon rendering more
+     * deterministic because some sizing parameters will not be cached. Please ensure that you
+     * reset this value back after finishing the test.
+     */
+    @VisibleForTesting
+    public static void setPoolEnabled(boolean poolEnabled) {
+        sPoolEnabled = poolEnabled;
+    }
+
     private static int getAttrDimFromContext(Context ctx, @AttrRes int attrId, String errorMsg) {
         final Resources res = ctx.getResources();
         TypedValue outVal = new TypedValue();