| /* |
| * Copyright (C) 2017 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 com.googlecode.android_scripting; |
| |
| import android.content.Context; |
| import android.os.Handler; |
| |
| import com.googlecode.android_scripting.future.FutureResult; |
| |
| import java.util.concurrent.Callable; |
| |
| public class MainThread { |
| |
| private MainThread() { |
| // Utility class. |
| } |
| |
| /** |
| * Executed in the main thread, returns the result of an execution. Anything that runs here should |
| * finish quickly to avoid hanging the UI thread. |
| */ |
| public static <T> T run(Context context, final Callable<T> task) { |
| final FutureResult<T> result = new FutureResult<T>(); |
| Handler handler = new Handler(context.getMainLooper()); |
| handler.post(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| result.set(task.call()); |
| } catch (Exception e) { |
| Log.e(e); |
| result.set(null); |
| } |
| } |
| }); |
| try { |
| return result.get(); |
| } catch (InterruptedException e) { |
| Log.e(e); |
| } |
| return null; |
| } |
| |
| public static void run(Context context, final Runnable task) { |
| Handler handler = new Handler(context.getMainLooper()); |
| handler.post(new Runnable() { |
| @Override |
| public void run() { |
| task.run(); |
| } |
| }); |
| } |
| } |