Android `AsyncTask`简要分析
Android `AsyncTask`简要分析 AsyncTask简要分析 经典异步任务:AsyncTask,使用场景有:批量下载,批量拷贝等。官方文档就直接给出了一个批量下载的示例。 private class DownloadFilesTask extends AsyncTask<URL, Integer, Long> { protected Long doInBackground(URL... urls) { int count = urls.length; long totalSize = 0; for (int i = 0; i < count; i++) { totalSize += Downloader.downloadFile(urls[i]); publishProgress((int) ((i / (float) count) * 100)); // Escape early if cancel() is called if (isCancelled()) break; } return totalSize; } protected void on...