Remove unnecessary Drawable.setState

Change-Id: I362933ea4d5bcb1ccfebb5b22f6ccecf12337f4b
diff --git a/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java b/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
index 2e87726..7f33502 100644
--- a/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
+++ b/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
@@ -808,10 +808,6 @@
         final KeyDrawParams drawParams = mKeyDrawParams;
         previewText.setTextColor(drawParams.mPreviewTextColor);
         final Drawable background = previewText.getBackground();
-        if (background != null) {
-            background.setState(KEY_PREVIEW_BACKGROUND_DEFAULT_STATE);
-            background.setAlpha(PREVIEW_ALPHA);
-        }
         final String label = key.getPreviewLabel();
         // What we show as preview should match what we show on a key top in onDraw().
         if (label != null) {
@@ -865,6 +861,7 @@
         if (background != null) {
             final int hasMoreKeys = (key.mMoreKeys != null) ? STATE_HAS_MOREKEYS : STATE_NORMAL;
             background.setState(KEY_PREVIEW_BACKGROUND_STATE_TABLE[statePosition][hasMoreKeys]);
+            background.setAlpha(PREVIEW_ALPHA);
         }
         ViewLayoutUtils.placeViewAt(
                 previewText, previewX, previewY, previewWidth, previewHeight);