在Android文件下载进度条

问题描述

如何显示剩余KB的文件被下载的进度条中的机器人。例如12KB / 120KB是remaining..then 97KB / 120KB ...等

我们能有这样的进度对话框显示的图像

解决方案

 类DownloadFileAsync扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; {
        私人ProgressDialog mProgressDialog;
        @覆盖
        在preExecute保护无效（）{
            super.on preExecute（）;
            mProgressDialog =新ProgressDialog（UrlTestActivity.this）;
            mProgressDialog.setMessage（下载文件...）;
            mProgressDialog.setProgressStyle（ProgressDialog.STYLE_HORIZONTAL）;
            mProgressDialog.setCancelable（假）;
            mProgressDialog.show（）;
        }

        @覆盖
        保护字符串doInBackground（字符串... aurl）{
            诠释计数;
            尝试 {

                的for（int i = 0;我3;;我++）{
                    网址URL =新的URL（http://nodeload.github.com/nexes/Android-File-Manager/zipball/master）;
                    URLConnection的体conexion = url.openConnection（）;
                    conexion.connect（）;
                    INT lenghtOfFile = conexion.getContentLength（）;
                    InputStream的是= url.openStream（）;
                    文件testDirectory =新的文件（Environment.getExternalStorageDirectory（）+/文件夹）;
                    如果（！testDirectory.exists（））{
                        testDirectory.mkdir（）;
                    }
                    FileOutputStream中FOS =新的FileOutputStream（testDirectory +/"+(i+100)+".zip）;
                    字节的数据[] =新的字节[1024];
                    总长= 0;
                    INT进度= 0;
                    而（（计数= is.​​read（数据））！=  -  1）{
                        共有+ =计数;
                        INT progress_temp =（int）的总* 100 / lenghtOfFile;
                        publishProgress（+ progress_temp）;
                        如果（progress_temp％10 == 0安培;＆安培;进步= progress_temp！）{
                            进度= progress_temp;
                        }
                        fos.write（数据，0，计数）;
                    }
                    is.close（）;
                    fos.close（）;
                }
            }赶上（例外五）{}
            返回null;

        }
        保护无效onProgressUpdate（字符串...进度）{
             Log.d（ANDRO_ASYNC，进步[0]）;
             mProgressDialog.setProgress（的Integer.parseInt（进展[0]））;
        }

        @覆盖
        保护无效onPostExecute（字符串使用）{
            dismissDialog（DIALOG_DOWNLOAD_PROGRESS）;
        }
    }
 

How to show the remaining KB's of file is to be downloaded in progress bar in android.e.g 12kb/120kb is remaining..then 97kb/120kb...etc

Can we have this progress dialog as shown in the image

解决方案

class DownloadFileAsync extends AsyncTask<String, String, String> {
        private ProgressDialog mProgressDialog;
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            mProgressDialog = new ProgressDialog(UrlTestActivity.this);
            mProgressDialog.setMessage("Downloading file..");
            mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            mProgressDialog.setCancelable(false);
            mProgressDialog.show();
        }

        @Override
        protected String doInBackground(String... aurl) {
            int count;
            try {

                for (int i = 0; i < 3; i++) {
                    URL url = new URL("http://nodeload.github.com/nexes/Android-File-Manager/zipball/master");
                    URLConnection conexion = url.openConnection();
                    conexion.connect();
                    int lenghtOfFile = conexion.getContentLength();
                    InputStream is = url.openStream();
                    File testDirectory = new File(Environment.getExternalStorageDirectory() + "/Folder");
                    if (!testDirectory.exists()) {
                        testDirectory.mkdir();
                    }
                    FileOutputStream fos = new FileOutputStream(testDirectory+ "/"+(i+100)+".zip");
                    byte data[] = new byte[1024];
                    long total = 0;
                    int progress = 0;
                    while ((count = is.read(data)) != -1) {
                        total += count;
                        int progress_temp = (int) total * 100 / lenghtOfFile;
                        publishProgress(""+ progress_temp);
                        if (progress_temp % 10 == 0 && progress != progress_temp) {
                            progress = progress_temp;
                        }
                        fos.write(data, 0, count);
                    }
                    is.close();
                    fos.close();
                }
            } catch (Exception e) {}
            return null;

        }
        protected void onProgressUpdate(String... progress) {
             Log.d("ANDRO_ASYNC",progress[0]);
             mProgressDialog.setProgress(Integer.parseInt(progress[0]));
        }

        @Override
        protected void onPostExecute(String unused) {
            dismissDialog(DIALOG_DOWNLOAD_PROGRESS);
        }
    }

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