1 // Copyright 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 package org.chromium.base.test.util; 6 7 import android.app.Instrumentation; 8 9 import java.util.concurrent.Callable; 10 import java.util.concurrent.ExecutionException; 11 import java.util.concurrent.FutureTask; 12 13 /** 14 * Utility methods built around the android.app.Instrumentation class. 15 */ 16 public final class InstrumentationUtils { 17 InstrumentationUtils()18 private InstrumentationUtils() { 19 } 20 runOnMainSyncAndGetResult(Instrumentation instrumentation, Callable<R> callable)21 public static <R> R runOnMainSyncAndGetResult(Instrumentation instrumentation, 22 Callable<R> callable) throws Throwable { 23 FutureTask<R> task = new FutureTask<R>(callable); 24 instrumentation.runOnMainSync(task); 25 try { 26 return task.get(); 27 } catch (ExecutionException e) { 28 // Unwrap the cause of the exception and re-throw it. 29 throw e.getCause(); 30 } 31 } 32 } 33