android 下载库

流利说的下载库，
Multitask、MultiThread(MultiConnection)、Breakpoint-resume、High-concurrency、Simple to use、Single/NotSingle-process

https://github.com/lingochamp/FileDownloader

注意：application里的init

        // just for open the log in this demo project.
        FileDownloadLog.NEED_LOG = BuildConfig.DOWNLOAD_NEED_LOG;

        /**
         * just for cache Application's Context, and ':filedownloader' progress will NOT be launched
         * by below code, so please do not worry about performance.
         * @see FileDownloader#init(Context)
         */
        FileDownloader.setupOnApplicationOnCreate(this)
                .connectionCreator(new FileDownloadUrlConnection
                        .Creator(new FileDownloadUrlConnection.Configuration()
                        .connectTimeout(15_000) // set connection timeout.
                        .readTimeout(15_000) // set read timeout.
                ))
                .commit();

        // below codes just for monitoring thread pools in the FileDownloader:
        // 监控线程池
        IThreadDebugger debugger = ThreadDebugger.install(
                ThreadDebuggers.create() /** The ThreadDebugger with known thread Categories **/
                        // add Thread Category
                        .add("OkHttp").add("okio").add("Binder")
                        .add(FileDownloadUtils.getThreadPoolName("Network"), "Network")
                        .add(FileDownloadUtils.getThreadPoolName("Flow"), "FlowSingle")
                        .add(FileDownloadUtils.getThreadPoolName("EventPool"), "Event")
                        .add(FileDownloadUtils.getThreadPoolName("LauncherTask"), "LauncherTask")
                        .add(FileDownloadUtils.getThreadPoolName("ConnectionBlock"), "Connection")
                        .add(FileDownloadUtils.getThreadPoolName("RemitHandoverToDB"), "RemitHandoverToDB")
                        .add(FileDownloadUtils.getThreadPoolName("BlockCompleted"), "BlockCompleted"),

                2000, /** The frequent of Updating Thread Activity information **/

                new ThreadDebugger.ThreadChangedCallback() {
                    /**
                     * The threads changed callback
                     **/
                    @Override
                    public void onChanged(IThreadDebugger debugger) {
                        // callback this method when the threads in this application has changed.
                        Log.d(TAG, debugger.drawUpEachThreadInfoDiff());
                        Log.d(TAG, debugger.drawUpEachThreadSizeDiff());
                        Log.d(TAG, debugger.drawUpEachThreadSize());
                    }
                });