android/app/src/com/android/bluetooth/btservice/activityAttribution/ActivityAttributionNativeInterface.java

/*
 * Copyright 2020 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.
 */

/*
 * Defines the native interface that is used by state machine/service to
 * send or receive messages from the native stack. This file is registered
 * for the native methods in the corresponding JNI C++ file.
 */
package com.android.bluetooth.btservice.activityattribution;

import com.android.internal.annotations.GuardedBy;

/** ActivityAttribution Native Interface to/from JNI. */
public class ActivityAttributionNativeInterface {
    @GuardedBy("INSTANCE_LOCK")
    private static ActivityAttributionNativeInterface sInstance;

    private static final Object INSTANCE_LOCK = new Object();

    /** Get singleton instance. */
    public static ActivityAttributionNativeInterface getInstance() {
        synchronized (INSTANCE_LOCK) {
            if (sInstance == null) {
                sInstance = new ActivityAttributionNativeInterface();
            }
            return sInstance;
        }
    }

    /** Notify the UID and package name of the app, and the address of associated active device */
    public void notifyActivityAttributionInfo(int uid, String packageName, String deviceAddress) {
        notifyActivityAttributionInfoNative(uid, packageName, deviceAddress);
    }

    private native void notifyActivityAttributionInfoNative(
            int uid, String packageName, String deviceAddress);
}