| /* |
| * Copyright (C) 2014 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 android.support.v4.os; |
| |
| import android.os.AsyncTask; |
| import android.os.Build; |
| |
| /** |
| * Helper for accessing features in {@link android.os.AsyncTask} |
| * introduced after API level 4 in a backwards compatible fashion. |
| */ |
| public class AsyncTaskCompat { |
| |
| /** |
| * Executes the task with the specified parameters, allowing multiple tasks to run in parallel |
| * on a pool of threads managed by {@link android.os.AsyncTask}. |
| * |
| * @param task The {@link android.os.AsyncTask} to execute. |
| * @param params The parameters of the task. |
| * @return the instance of AsyncTask. |
| */ |
| public static <Params, Progress, Result> AsyncTask<Params, Progress, Result> executeParallel( |
| AsyncTask<Params, Progress, Result> task, |
| Params... params) { |
| if (task == null) { |
| throw new IllegalArgumentException("task can not be null"); |
| } |
| |
| if (Build.VERSION.SDK_INT >= 11) { |
| // From API 11 onwards, we need to manually select the THREAD_POOL_EXECUTOR |
| AsyncTaskCompatHoneycomb.executeParallel(task, params); |
| } else { |
| // Before API 11, all tasks were run in parallel |
| task.execute(params); |
| } |
| |
| return task; |
| } |
| |
| } |