Clean up in-code preference controllers from accessibility

Bug: 135056871
Test: manual, robotests
Change-Id: I0c1358657d3f57ddae2b8f2b12ee610e7363f41f

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

@@ -31,9 +31,6 @@ import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.fragment.app.FragmentManager;
-import androidx.lifecycle.Lifecycle.Event;
-import androidx.lifecycle.LifecycleObserver;
-import androidx.lifecycle.OnLifecycleEvent;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
@@ -43,6 +40,9 @@ import com.android.settings.core.BasePreferenceController;
 import com.android.settings.core.SubSettingLauncher;
 import com.android.settingslib.bluetooth.CachedBluetoothDevice;
 import com.android.settingslib.bluetooth.LocalBluetoothManager;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnStart;
+import com.android.settingslib.core.lifecycle.events.OnStop;
 
 import java.util.Iterator;
 import java.util.List;
@@ -53,7 +53,7 @@ import java.util.concurrent.FutureTask;
  * Controller that shows and updates the bluetooth device name
  */
 public class AccessibilityHearingAidPreferenceController extends BasePreferenceController
-        implements LifecycleObserver {
+        implements LifecycleObserver, OnStart, OnStop {
     private static final String TAG = "AccessibilityHearingAidPreferenceController";
     private Preference mHearingAidPreference;
 
@@ -104,8 +104,8 @@ public class AccessibilityHearingAidPreferenceController extends BasePreferenceC
         return mHearingAidProfileSupported ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
     }
 
-    @OnLifecycleEvent(Event.ON_RESUME)
-    public void onResume() {
+    @Override
+    public void onStart() {
         if (mHearingAidProfileSupported) {
             IntentFilter filter = new IntentFilter();
             filter.addAction(BluetoothHearingAid.ACTION_CONNECTION_STATE_CHANGED);
@@ -114,8 +114,8 @@ public class AccessibilityHearingAidPreferenceController extends BasePreferenceC
         }
     }
 
-    @OnLifecycleEvent(Event.ON_PAUSE)
-    public void onPause() {
+    @Override
+    public void onStop() {
         if (mHearingAidProfileSupported) {
             mContext.unregisterReceiver(mHearingAidChangedReceiver);
         }

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

@@ -94,17 +94,10 @@ public class AccessibilitySettings extends DashboardFragment {
     private static final String TOGGLE_LARGE_POINTER_ICON =
             "toggle_large_pointer_icon";
     private static final String TOGGLE_DISABLE_ANIMATIONS = "toggle_disable_animations";
-    private static final String HEARING_AID_PREFERENCE =
-            "hearing_aid_preference";
     private static final String DISPLAY_MAGNIFICATION_PREFERENCE_SCREEN =
             "magnification_preference_screen";
     private static final String DISPLAY_DALTONIZER_PREFERENCE_SCREEN =
             "daltonizer_preference";
-    private static final String DARK_UI_MODE_PREFERENCE =
-            "dark_ui_mode_accessibility";
-    private static final String LIVE_CAPTION_PREFERENCE_KEY =
-            "live_caption";
-
 
     // Extras passed to sub-fragments.
     static final String EXTRA_PREFERENCE_KEY = "preference_key";
@@ -178,13 +171,7 @@ public class AccessibilitySettings extends DashboardFragment {
     private SwitchPreference mToggleDisableAnimationsPreference;
     private Preference mDisplayMagnificationPreferenceScreen;
     private Preference mDisplayDaltonizerPreferenceScreen;
-    private Preference mHearingAidPreference;
-    private Preference mLiveCaptionPreference;
     private SwitchPreference mToggleInversionPreference;
-    private AccessibilityHearingAidPreferenceController mHearingAidPreferenceController;
-    private SwitchPreference mDarkUIModePreference;
-    private DarkUIPreferenceController mDarkUIPreferenceController;
-    private LiveCaptionPreferenceController mLiveCaptionPreferenceController;
 
     private DevicePolicyManager mDpm;
 
@@ -236,13 +223,9 @@ public class AccessibilitySettings extends DashboardFragment {
     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
-        mHearingAidPreferenceController = new AccessibilityHearingAidPreferenceController
-                (context, HEARING_AID_PREFERENCE);
-        mHearingAidPreferenceController.setFragmentManager(getFragmentManager());
-        getLifecycle().addObserver(mHearingAidPreferenceController);
-
-        mLiveCaptionPreferenceController = new LiveCaptionPreferenceController(context,
-                LIVE_CAPTION_PREFERENCE_KEY);
+        use(DarkUIPreferenceController.class).setParentFragment(this);
+        use(AccessibilityHearingAidPreferenceController.class)
+                .setFragmentManager(getFragmentManager());
     }
 
     @Override
@@ -261,14 +244,6 @@ public class AccessibilitySettings extends DashboardFragment {
         super.onStop();
     }
 
-    @Override
-    public boolean onPreferenceTreeClick(Preference preference) {
-        if (mHearingAidPreferenceController.handlePreferenceTreeClick(preference)) {
-            return true;
-        }
-        return super.onPreferenceTreeClick(preference);
-    }
-
     @Override
     protected int getPreferenceScreenResId() {
         return R.xml.accessibility_settings;
@@ -318,27 +293,12 @@ public class AccessibilitySettings extends DashboardFragment {
         mToggleDisableAnimationsPreference =
                 (SwitchPreference) findPreference(TOGGLE_DISABLE_ANIMATIONS);
 
-        // Hearing Aid.
-        mHearingAidPreference = findPreference(HEARING_AID_PREFERENCE);
-        mHearingAidPreferenceController.displayPreference(getPreferenceScreen());
-
-        // Live caption
-        mLiveCaptionPreference = findPreference(LIVE_CAPTION_PREFERENCE_KEY);
-        mLiveCaptionPreferenceController.displayPreference(getPreferenceScreen());
-
         // Display magnification.
         mDisplayMagnificationPreferenceScreen = findPreference(
                 DISPLAY_MAGNIFICATION_PREFERENCE_SCREEN);
 
         // Display color adjustments.
         mDisplayDaltonizerPreferenceScreen = findPreference(DISPLAY_DALTONIZER_PREFERENCE_SCREEN);
-
-        // Dark Mode.
-        mDarkUIModePreference = findPreference(DARK_UI_MODE_PREFERENCE);
-        mDarkUIPreferenceController = new DarkUIPreferenceController(getContext(),
-                DARK_UI_MODE_PREFERENCE);
-        mDarkUIPreferenceController.setParentFragment(this);
-        mDarkUIPreferenceController.displayPreference(getPreferenceScreen());
     }
 
     private void updateAllPreferences() {
@@ -544,13 +504,6 @@ public class AccessibilitySettings extends DashboardFragment {
             displayCategory.addPreference(mToggleInversionPreference);
             displayCategory.addPreference(mDisplayDaltonizerPreferenceScreen);
         }
-
-        // Dark Mode
-        mDarkUIPreferenceController.updateState(mDarkUIModePreference);
-
-        mHearingAidPreferenceController.updateState(mHearingAidPreference);
-
-        mLiveCaptionPreferenceController.updateState(mLiveCaptionPreference);
     }
 
     public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =