Modify the code logic of OnLayoutChangeListener in Caption preferences

Remove the listener and add statement to refresh the text when the caption turns on.

Bug: 142632389
Test: Manual
Change-Id: Ic5711309c5b8af9834e5439d825b4cb2ed55fe01

src/com/android/settings/accessibility/CaptionAppearanceFragment.java

@@ -92,6 +92,17 @@ public class CaptionAppearanceFragment extends SettingsPreferenceFragment
 
     private final List<Preference> mPreferenceList = new ArrayList<>();
 
+    private final View.OnLayoutChangeListener mLayoutChangeListener =
+            new View.OnLayoutChangeListener() {
+                @Override
+                public void onLayoutChange(View v, int left, int top, int right, int bottom,
+                        int oldLeft, int oldTop, int oldRight, int oldBottom) {
+                    // Remove the listener once the callback is triggered.
+                    mPreviewViewport.removeOnLayoutChangeListener(this);
+                    refreshPreviewText();
+                }
+            };
+
     @Override
     public int getMetricsCategory() {
         return SettingsEnums.ACCESSIBILITY_CAPTION_PROPERTIES;
@@ -198,9 +209,7 @@ public class CaptionAppearanceFragment extends SettingsPreferenceFragment
         mPreviewWindow = captionPreview.findViewById(R.id.preview_window);
 
         mPreviewViewport = captionPreview.findViewById(R.id.preview_viewport);
-        mPreviewViewport.addOnLayoutChangeListener(
-                (v, left, top, right, bottom, oldLeft, oldTop, oldRight, oldBottom)
-                        -> refreshPreviewText());
+        mPreviewViewport.addOnLayoutChangeListener(mLayoutChangeListener);
 
         final Resources res = getResources();
         final int[] presetValues = res.getIntArray(R.array.captioning_preset_selector_values);