LifecycleService.kt

/*
 * Copyright (C) 2017 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 androidx.lifecycle

import android.app.Service
import android.content.Intent
import android.os.IBinder
import androidx.annotation.CallSuper

/**
 * A Service that is also a [LifecycleOwner].
 */
open class LifecycleService : Service(), LifecycleOwner {

    private val dispatcher = ServiceLifecycleDispatcher(this)

    @CallSuper
    override fun onCreate() {
        dispatcher.onServicePreSuperOnCreate()
        super.onCreate()
    }

    @CallSuper
    override fun onBind(intent: Intent): IBinder? {
        dispatcher.onServicePreSuperOnBind()
        return null
    }

    @Deprecated("Deprecated in Java")
    @Suppress("DEPRECATION")
    @CallSuper
    override fun onStart(intent: Intent?, startId: Int) {
        dispatcher.onServicePreSuperOnStart()
        super.onStart(intent, startId)
    }

    // this method is added only to annotate it with @CallSuper.
    // In usual Service, super.onStartCommand is no-op, but in LifecycleService
    // it results in dispatcher.onServicePreSuperOnStart() call, because
    // super.onStartCommand calls onStart().
    @CallSuper
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        return super.onStartCommand(intent, flags, startId)
    }

    @CallSuper
    override fun onDestroy() {
        dispatcher.onServicePreSuperOnDestroy()
        super.onDestroy()
    }

    override fun getLifecycle(): Lifecycle {
        return dispatcher.lifecycle
    }
}