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Apache License
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/* * Copyright 2012 Google Inc. All Rights Reserved. */*ww w.jav a 2s . c o m*/ * 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 com.google.android.apps.authenticator; import android.os.Handler; import java.util.concurrent.Executor; /** * {@link Executor} that invokes {@link Runnable} instances on the thread on which it was created. * The assumption is that the thread has a {@link android.os.Looper} associated with it. * * @author klyubin@google.com (Alex Klyubin) */ public class RunOnThisLooperThreadExecutor implements Executor { private final Handler mHandler = new Handler(); @Override public void execute(Runnable command) { if (Thread.currentThread() == mHandler.getLooper().getThread()) { // The calling thread is the target thread of the Handler -- invoke immediately, blocking // the calling thread. command.run(); } else { // The calling thread is not the same as the thread with which the Handler is associated -- // post to the Handler for later execution. mHandler.post(command); } } }