xref: /aosp_15_r20/frameworks/layoutlib/bridge/src/android/os/Looper_Accessor.java (revision fc3927be90a325f95c74a9043993a80ef388dc46)
1 /*
2  * Copyright (C) 2011 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 package android.os;
17 
18 import java.lang.reflect.Field;
19 
20 /**
21  * Class allowing access to package-protected methods/fields.
22  */
23 public class Looper_Accessor {
24 
cleanupThread()25     public static void cleanupThread() {
26         // clean up the looper
27         Looper.sThreadLocal.remove();
28         try {
29             Field sMainLooper = Looper.class.getDeclaredField("sMainLooper");
30             sMainLooper.setAccessible(true);
31             sMainLooper.set(null, null);
32         } catch (SecurityException | IllegalAccessException | NoSuchFieldException |
33                  IllegalArgumentException e) {
34             catchReflectionException();
35         }
36 
37     }
38 
catchReflectionException()39     private static void catchReflectionException() {
40         assert(false);
41     }
42 }
43