Android(安卓)使用AsyncHttpClient文件上传与下载

/** * 异步传输工具 *  * @author chen.lin *  */@SuppressWarnings("deprecation")public class AsyncHttpUtil {    private static boolean isSuccess = false;    /**     * 异步上传文件     *      * @param path     *            :文件路径     * @param url     *            :上传的url     */    public static boolean uploadFile(final Context context, String path, String url, String filename,            final ProgressDialog progress) throws Exception {        File file = new File(path);        if (file.exists() && file.length() > 0) {            AsyncHttpClient client = new AsyncHttpClient();            RequestParams params = new RequestParams();            params.put("uploadfile", file);            params.put("newFilename", filename);            // 设置进度条最大值            progress.setMax(Integer.parseInt(file.length() + ""));            // 上传文件            client.post(url, params, new AsyncHttpResponseHandler() {                @Override                public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {                    // 上传成功后要做的工作                    progress.dismiss();                    Toast.makeText(context, "上传成功", Toast.LENGTH_LONG).show();                    // progress.setProgress(0);                    isSuccess = true;                }                @Override                public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {                    progress.dismiss();                    Toast.makeText(context, "上传失败", Toast.LENGTH_LONG).show();                    isSuccess = false;                }                @Override                public void onProgress(long bytesWritten, long totalSize) {                    int count = (int) ((bytesWritten * 1.0 / totalSize) * 100);                    // 上传进度显示                    progress.setProgress(count);                    super.onProgress(bytesWritten, totalSize);                }                @Override                public void onRetry(int retryNo) {                    super.onRetry(retryNo);                    // 返回重试次数                }            });        } else {            progress.dismiss();            Toast.makeText(context, "文件不存在", Toast.LENGTH_LONG).show();        }        return isSuccess;    }    /**     * @param url     *            要下载的文件URL     * @throws Exception     */    public static void downloadFile(final Context mContext, String url, final ProgressDialog progress) throws Exception {        AsyncHttpClient client = new AsyncHttpClient();        // 指定文件类型        String[] fileTypes = new String[] { "image/png", "image/jpeg" };        // 获取二进制数据如图片和其他文件        client.get(url, new BinaryHttpResponseHandler(fileTypes) {            @Override            public void onSuccess(int statusCode, Header[] headers, byte[] binaryData) {                String tempPath = Environment.getExternalStorageDirectory().getPath() + "/temp.jpg";                // TODO Auto-generated method stub                // 下载成功后需要做的工作                progress.setProgress(0);                //                Logger.e("binaryData:", "共下载了：" + binaryData.length);                //                Bitmap bmp = BitmapFactory.decodeByteArray(binaryData, 0, binaryData.length);                File file = new File(tempPath);                // 压缩格式                CompressFormat format = Bitmap.CompressFormat.JPEG;                // 压缩比例                int quality = 100;                try {                    // 若存在则删除                    if (file.exists())                        file.delete();                    // 创建文件                    file.createNewFile();                    //                    OutputStream stream = new FileOutputStream(file);                    // 压缩输出                    bmp.compress(format, quality, stream);                    // 关闭                    stream.close();                    //                    Toast.makeText(mContext, "下载成功\n" + tempPath, Toast.LENGTH_LONG).show();                } catch (IOException e) {                    e.printStackTrace();                }            }            @Override            public void onFailure(int statusCode, Header[] headers, byte[] binaryData, Throwable error) {                Toast.makeText(mContext, "下载失败", Toast.LENGTH_LONG).show();            }            @Override            public void onProgress(long bytesWritten, long totalSize) {                int count = (int) ((bytesWritten * 1.0 / totalSize) * 100);                // 下载进度显示                progress.setProgress(count);                Logger.e("下载 Progress>>>>>", bytesWritten + " / " + totalSize);                super.onProgress(bytesWritten, totalSize);            }            @Override            public void onRetry(int retryNo) {                super.onRetry(retryNo);                // 返回重试次数            }        });    }}

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