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我有几个文件上传到我的服务器，现在我想要做的是我想要一个一个地下载所有文件并将其保存到一个文件夹中。如何从服务器下载所有文件到SD卡
所以基本上我试图做一些像[这] [1]，但一些如何我无法实现这一点，所以我想一个替代方法来做到这一点。所以我打算将服务器的特定文件夹的所有音频文件下载到我的SD卡文件夹中，然后我会给SD卡的路径列表视图并播放该音频。
所以基本上我的问题是我怎么能从服务器文件夹下载所有文件到我的SD卡文件夹。
我有下面的一段代码工作正常单个文件。
public class ServerFileList extends Activity {
Uri uri;
URL urlAudio;
ListView mListView;
ProgressDialog pDialog;
private MediaPlayer mp = new MediaPlayer();
private List<String> myList = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.serverfilelist);
mListView = (ListView) findViewById(R.id.listAudio);
// new getAudiofromServer().execute();
new downloadAudio().execute();
mListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
playSong(urlAudio + myList.get(position));
}
});
}
public void updateProgress(int currentSize, int totalSize) {
TextView mTextView = new TextView(ServerFileList.this);
mTextView.setText(Long.toString((currentSize/totalSize) * 100) + "%");
}
private void playSong(String songPath) {
try {
mp.reset();
mp.setDataSource(songPath);
mp.prepare();
mp.start();
} catch (IOException e) {
Log.v(getString(R.string.app_name), e.getMessage());
}
}
class downloadAudio extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ServerFileList.this);
pDialog.setMessage("Downloading File list from server, Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... arg0) {
// set the download URL, a url that points to a file on the internet
// this is the file to be downloaded
URL url = null;
try {
url = new URL("http://server/folder/uploadAudio/abcd.mp3");
} catch (MalformedURLException e3) {
// TODO Auto-generated catch block
e3.printStackTrace();
}
// create the new connection
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
} catch (IOException e5) {
// TODO Auto-generated catch block
e5.printStackTrace();
}
// set up some things on the connection
try {
urlConnection.setRequestMethod("GET");
} catch (ProtocolException e4) {
// TODO Auto-generated catch block
e4.printStackTrace();
}
urlConnection.setDoOutput(true);
// and connect!
try {
urlConnection.connect();
} catch (IOException e3) {
// TODO Auto-generated catch block
e3.printStackTrace();
}
// set the path where we want to save the file
// in this case, going to save it on the root directory of the
// sd card.
String MEDIA_PATH = new String(
Environment.getExternalStorageDirectory()
+ "/newDirectory/");
File SDCardRoot = new File(MEDIA_PATH);
if (!SDCardRoot.exists()) {
SDCardRoot.mkdir();
}
// create a new file, specifying the path, and the filename
// which we want to save the file as.
File file = new File(SDCardRoot, System.currentTimeMillis()
+ ".mp3");
// this will be used to write the downloaded data into the file we
// created
FileOutputStream fileOutput = null;
try {
fileOutput = new FileOutputStream(file);
} catch (FileNotFoundException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
// this will be used in reading the data from the internet
InputStream inputStream = null;
try {
inputStream = urlConnection.getInputStream();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// this is the total size of the file
int totalSize = urlConnection.getContentLength();
// variable to store total downloaded bytes
int downloadedSize = 0;
// create a buffer...
byte[] buffer = new byte[1024];
int bufferLength = 0; // used to store a temporary size of the
// buffer
// now, read through the input buffer and write the contents to the
// file
try {
while ((bufferLength = inputStream.read(buffer)) > 0) {
// add the data in the buffer to the file in the file output
// stream (the file on the sd card
fileOutput.write(buffer, 0, bufferLength);
// add up the size so we know how much is downloaded
downloadedSize += bufferLength;
// this is where you would do something to report the
// prgress,
// like this maybe
updateProgress(downloadedSize, totalSize);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// close the output stream when done
try {
fileOutput.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
// catch some possible errors...
}
protected void onPostExecute(String file_url) {
if (pDialog.isShowing()) {
pDialog.dismiss();
}
}
}
class getAudiofromServer extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ServerFileList.this);
pDialog.setMessage("Getting File list from server, Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@SuppressWarnings("unchecked")
@Override
protected String doInBackground(String... arg0) {
try {
urlAudio = new URL("http://server/folder/uploadAudio");
} catch (MalformedURLException e) {
e.printStackTrace();
}
ApacheURLLister lister1 = new ApacheURLLister();
try {
myList = lister1.listAll(urlAudio);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
if (pDialog.isShowing()) {
pDialog.dismiss();
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
ServerFileList.this, android.R.layout.simple_list_item_1,
myList);
adapter.notifyDataSetChanged();
mListView.setAdapter(adapter);
mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
mListView.setCacheColorHint(Color.TRANSPARENT);
}
}
}
你需要提供具体信息：你有什么类型的服务器，它是如何访问的？ “所有文件”是什么意思？如果你能下载一个文件，我看不到下载“所有文件”的问题...... '但有些我怎么无法实现'为什么？给我们提供理由和/或尝试的代码。 – initramfs
@CPUTerminator，我试过这段代码http://stackoverflow.com/questions/15873417/how-to-download-a-directory-from-ftp-server-in-android。但它似乎并不适合我。 – InnocentKiller
你有FTP服务器吗？什么不行？抛出异常吗？你可以发布堆栈跟踪吗？ “它不起作用”并不能帮助我们帮助您调试问题。 – initramfs