1 /*
2  * Copyright (C) 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.permissioncontroller.permission.service
18 
19 import android.os.Looper
20 import androidx.lifecycle.LifecycleObserver
21 import androidx.lifecycle.LifecycleOwner
22 import androidx.lifecycle.LifecycleRegistry
23 import java.lang.IllegalStateException
24 
25 class CheckLifecycleRegistry(provider: LifecycleOwner) : LifecycleRegistry(provider) {
26     private val observerLock = Any()
27 
addObservernull28     override fun addObserver(observer: LifecycleObserver) {
29         if (Looper.myLooper() != Looper.getMainLooper()) {
30             throw IllegalStateException("Lifecycle running on non main thread")
31         }
32         synchronized(observerLock) { super.addObserver(observer) }
33     }
34 
removeObservernull35     override fun removeObserver(observer: LifecycleObserver) {
36         if (Looper.myLooper() != Looper.getMainLooper()) {
37             throw IllegalStateException("Lifecycle running on non main thread")
38         }
39         synchronized(observerLock) { super.removeObserver(observer) }
40     }
41 }
42