Add Hearing Aid UI into Settings-Accessibility App

- dynamically show/hide preference by HearingAid profile is supported or not
- add AccessibilityHearingAidPreferenceController to handle hearingAid preference
- add HearingAidDialogFragment to handle dialog behavior

Bug: 109948484
Test: make -j50 RunSettingsRoboTests

Change-Id: Ic55dde475dc40311f7e652f4a86d342597f09f0e

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

@@ -110,6 +110,8 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
             "select_long_press_timeout_preference";
     private static final String ACCESSIBILITY_SHORTCUT_PREFERENCE =
             "accessibility_shortcut_preference";
+    private static final String HEARING_AID_PREFERENCE =
+            "hearing_aid_preference";
     private static final String CAPTIONING_PREFERENCE_SCREEN =
             "captioning_preference_screen";
     private static final String DISPLAY_MAGNIFICATION_PREFERENCE_SCREEN =
@@ -221,9 +223,11 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
     private Preference mAutoclickPreferenceScreen;
     private Preference mAccessibilityShortcutPreferenceScreen;
     private Preference mDisplayDaltonizerPreferenceScreen;
+    private Preference mHearingAidPreference;
     private Preference mVibrationPreferenceScreen;
     private SwitchPreference mToggleInversionPreference;
     private ColorInversionPreferenceController mInversionPreferenceController;
+    private AccessibilityHearingAidPreferenceController mHearingAidPreferenceController;
 
     private int mLongPressTimeoutDefault;
 
@@ -275,6 +279,15 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
                 .getSystemService(Context.DEVICE_POLICY_SERVICE));
     }
 
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        mHearingAidPreferenceController = new AccessibilityHearingAidPreferenceController
+                (context, HEARING_AID_PREFERENCE);
+        mHearingAidPreferenceController.setFragmentManager(getFragmentManager());
+        getLifecycle().addObserver(mHearingAidPreferenceController);
+    }
+
     @Override
     public void onResume() {
         super.onResume();
@@ -335,6 +348,8 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
         } else if (mToggleMasterMonoPreference == preference) {
             handleToggleMasterMonoPreferenceClick();
             return true;
+        } else if (mHearingAidPreferenceController.handlePreferenceTreeClick(preference)) {
+            return true;
         }
         return super.onPreferenceTreeClick(preference);
     }
@@ -452,6 +467,10 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
             }
         }
 
+        // Hearing Aid.
+        mHearingAidPreference = findPreference(HEARING_AID_PREFERENCE);
+        mHearingAidPreferenceController.displayPreference(getPreferenceScreen());
+
         // Captioning.
         mCaptioningPreferenceScreen = findPreference(CAPTIONING_PREFERENCE_SCREEN);
 
@@ -686,6 +705,8 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
 
         updateVibrationSummary(mVibrationPreferenceScreen);
 
+        mHearingAidPreferenceController.updateState(mHearingAidPreference);
+
         updateFeatureSummary(Settings.Secure.ACCESSIBILITY_CAPTIONING_ENABLED,
                 mCaptioningPreferenceScreen);
         updateFeatureSummary(Settings.Secure.ACCESSIBILITY_DISPLAY_DALTONIZER_ENABLED,