[Pair hearing devices] Add pair hearing device functionality

* Add setFilter(List<ScanFilter>) in DeviceListPreferenceFragment to enable BluetoothLeScanner

Bug: 237625815
Test: make RunSettingsRoboTests ROBOTEST_FILTER=DeviceListPreferenceFragmentTest
Test: make RunSettingsRoboTests ROBOTEST_FILTER=HearingDevicePairingDetailTest
Change-Id: I13495cad7260789845fad9a7e77e96b692a5cbd0

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

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothUuid;
+import android.bluetooth.le.ScanFilter;
+
+import androidx.annotation.VisibleForTesting;
+
+import com.android.settings.R;
+import com.android.settings.bluetooth.BluetoothDevicePairingDetailBase;
+import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+
+import java.util.Collections;
+
+/**
+ * HearingDevicePairingDetail is a page to scan hearing devices. This page shows scanning icons and
+ * pairing them.
+ */
+public class HearingDevicePairingDetail extends BluetoothDevicePairingDetailBase {
+
+    private static final String TAG = "HearingDevicePairingDetail";
+    @VisibleForTesting
+    static final String KEY_AVAILABLE_HEARING_DEVICES = "available_hearing_devices";
+
+    public HearingDevicePairingDetail() {
+        super();
+        final ScanFilter filter = new ScanFilter.Builder()
+                .setServiceData(BluetoothUuid.HEARING_AID, new byte[]{0}, new byte[]{0})
+                .build();
+        setFilter(Collections.singletonList(filter));
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        mAvailableDevicesCategory.setProgress(mBluetoothAdapter.isEnabled());
+    }
+
+    @Override
+    public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
+        super.onDeviceBondStateChanged(cachedDevice, bondState);
+
+        mAvailableDevicesCategory.setProgress(bondState == BluetoothDevice.BOND_NONE);
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        // TODO(b/262839191): To be updated settings_enums.proto
+        return 0;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.hearing_device_pairing_detail;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    public String getDeviceListKey() {
+        return KEY_AVAILABLE_HEARING_DEVICES;
+    }
+}