Java tutorial
//package com.java2s; // Use of this source code is governed by a BSD-style license that can be import android.app.Instrumentation; import java.util.concurrent.Callable; import java.util.concurrent.ExecutionException; import java.util.concurrent.FutureTask; public class Main { public static <R> R runOnMainSyncAndGetResult(Instrumentation instrumentation, Callable<R> callable) throws Throwable { FutureTask<R> task = new FutureTask<R>(callable); instrumentation.runOnMainSync(task); try { return task.get(); } catch (ExecutionException e) { // Unwrap the cause of the exception and re-throw it. throw e.getCause(); } } }