download.java

			void downloadFile(String url, String referer) throws Exception {
				Log.i(LOGTAG, "Attempting download of " + url);
				URL downloadUrl = new URL(url);
				final File filePath = Helper.computeFilePath(downloadUrl);
				Log.i(LOGTAG, "Downloading: " + downloadUrl);
				URLConnection conn = downloadUrl.openConnection();
				if (!Helper.isJavaScriptNullOrEmpty(referer))
					conn.addRequestProperty("Referer", referer);
				final int totalSize = conn.getContentLength();
				DataInputStream input = new DataInputStream(conn.getInputStream());
				final File tmpFilePath = new File(filePath.toString() + ".tmp");
				filePath.getParentFile().mkdirs();
				FileOutputStream fout = new FileOutputStream(tmpFilePath);
				byte[] buffer = new byte[200000];
				int read = 0;
				int total = 0;
				int lastUpdate = 0;
				while ((read = input.read(buffer)) != -1) {
					if (mCancel)
						return;
					total += read;
					final double fraction = (double) total / (double) totalSize;
					final int progress = (int) (fraction * 100);
					if (totalSize != -1 && total > lastUpdate + 100000) {
						fireProgressNotification(progress);
						lastUpdate = total;
					}
					fout.write(buffer, 0, read);
				}
				fout.close();
				input.close();
				if (!Helper.isValidZip(tmpFilePath.getAbsolutePath()))
					throw new Exception(getString(R.string.corrupt));
				tmpFilePath.renameTo(filePath);
				Log.i(LOGTAG, "Download complete. Bytes received: " + total);
				romPackage.mFiles.add(filePath.getAbsolutePath());
				Log.i(LOGTAG, "Download complete.");
			}