Add hearing device related logs in Settings

1. The HAC toggle on/off event
2. The "See more devices" button click in hearing device pairing page
3. The preset changed event in Bluetooth device details page

Flag: EXEMPT, simple log
Bug: 361206470
Test: manually check on go/atomviewer
Test: atest BluetoothDetailsHearingAidsPresetsControllerTest
Change-Id: I743ea136ec4cb3370c0463df865db830e73e7997

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

@@ -25,6 +25,7 @@ import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.telephony.flags.Flags;
 import com.android.settings.R;
 import com.android.settings.core.TogglePreferenceController;
+import com.android.settings.overlay.FeatureFactory;
 
 /** Preference controller for Hearing Aid Compatibility (HAC) settings */
 public class HearingAidCompatibilityPreferenceController extends TogglePreferenceController {
@@ -73,6 +74,8 @@ public class HearingAidCompatibilityPreferenceController extends TogglePreferenc
 
     @Override
     public boolean setChecked(boolean isChecked) {
+        FeatureFactory.getFeatureFactory().getMetricsFeatureProvider().changed(
+                getMetricsCategory(), getPreferenceKey(), isChecked ? 1 : 0);
         setAudioParameterHacEnabled(isChecked);
         return Settings.System.putInt(mContext.getContentResolver(), Settings.System.HEARING_AID,
                 (isChecked ? HAC_ENABLED : HAC_DISABLED));

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

@@ -26,6 +26,7 @@ import com.android.settings.connecteddevice.ConnectedDeviceDashboardFragment;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.core.SubSettingLauncher;
 import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.overlay.FeatureFactory;
 
 /** Preference controller for all bluetooth device preference. */
 public class ViewAllBluetoothDevicesPreferenceController extends BasePreferenceController {
@@ -52,6 +53,8 @@ public class ViewAllBluetoothDevicesPreferenceController extends BasePreferenceC
     @Override
     public boolean handlePreferenceTreeClick(Preference preference) {
         if (TextUtils.equals(preference.getKey(), getPreferenceKey())) {
+            FeatureFactory.getFeatureFactory().getMetricsFeatureProvider().clicked(
+                    getMetricsCategory(), getPreferenceKey());
             launchConnectedDevicePage();
             return true;
         }

src/com/android/settings/bluetooth/BluetoothDetailsHearingAidsPresetsController.java

@@ -38,6 +38,7 @@ import androidx.preference.PreferenceFragmentCompat;
 import androidx.preference.PreferenceScreen;
 
 import com.android.settings.R;
+import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.bluetooth.CachedBluetoothDevice;
 import com.android.settingslib.bluetooth.HapClientProfile;
 import com.android.settingslib.bluetooth.LocalBluetoothManager;
@@ -111,6 +112,7 @@ public class BluetoothDetailsHearingAidsPresetsController extends
                 final int index = listPreference.findIndexOfValue(value);
                 final String presetName = listPreference.getEntries()[index].toString();
                 final int presetIndex = Integer.parseInt(value);
+                logPresetChangedIfNeeded();
                 listPreference.setSummary(presetName);
                 if (DEBUG) {
                     Log.d(TAG, "onPreferenceChange"
@@ -373,4 +375,15 @@ public class BluetoothDetailsHearingAidsPresetsController extends
             mHapClientProfile.selectPreset(memberDevice.getDevice(), presetIndex);
         }
     }
+
+    private void logPresetChangedIfNeeded() {
+        if (mPreference == null || mPreference.getEntries() == null) {
+            return;
+        }
+        if (mFragment instanceof BluetoothDeviceDetailsFragment) {
+            int category = ((BluetoothDeviceDetailsFragment) mFragment).getMetricsCategory();
+            FeatureFactory.getFeatureFactory().getMetricsFeatureProvider().changed(category,
+                    getPreferenceKey(), mPreference.getEntries().length);
+        }
+    }
 }