| /* |
| * Copyright 2019 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.core.os; |
| |
| import android.os.Handler; |
| |
| import androidx.annotation.NonNull; |
| import androidx.core.util.Preconditions; |
| |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.RejectedExecutionException; |
| |
| /** An adapter {@link Executor} that posts all executed tasks onto the given {@link Handler}. */ |
| public class HandlerExecutor implements Executor { |
| private final Handler mHandler; |
| |
| public HandlerExecutor(@NonNull Handler handler) { |
| mHandler = Preconditions.checkNotNull(handler); |
| } |
| |
| @Override |
| public void execute(@NonNull Runnable command) { |
| if (!mHandler.post(Preconditions.checkNotNull(command))) { |
| throw new RejectedExecutionException(mHandler + " is shutting down"); |
| } |
| } |
| } |