Combined biometric settings implementation

There will be multiple biometrics authentications existing at the same
time, so we added a new page for multiple biometrics to control
biometrics settings.

Bug: 183449119
Test: manual test
Change-Id: I359082caf771e07dfd5b24973cb8a3cf372c1b30

src/com/android/settings/biometrics/combination/CombinedBiometricSettings.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2021 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.biometrics.combination;
+
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.content.Intent;
+import android.os.UserHandle;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settingslib.search.SearchIndexable;
+
+/**
+ * Settings screen for multiple biometrics.
+ */
+@SearchIndexable
+public class CombinedBiometricSettings extends DashboardFragment {
+    private static final String TAG = "BiometricSettings";
+
+    private int mUserId;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        mUserId = getActivity().getIntent().getIntExtra(Intent.EXTRA_USER_ID,
+                UserHandle.myUserId());
+        use(BiometricSettingsKeyguardPreferenceController.class).setUserId(mUserId);
+        use(BiometricSettingsAppPreferenceController.class).setUserId(mUserId);
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.security_settings_combined_biometric;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.COMBINED_BIOMETRIC;
+    }
+
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.security_settings_combined_biometric);
+}