我想使用wifi直接制作传输文件的应用程序，但我的发送和接收器进度条不会更新
我的发件人
public void Server () {
new Thread(new Runnable()
{
@Override
public void run() {
// TODO Auto-generated method stub
try {
//receive ip
serverSocket = new ServerSocket(port);
Socket socket = serverSocket.accept();
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
ClientIP = line;
}
in.close();
socket.close();
serverSocket.close();
socket = null;
serverSocket = null;
try {
Thread.sleep(1000);
} catch (InterruptedException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
//send file
socket = new Socket();
socket.bind(null);
socketAddress = new InetSocketAddress(ClientIP, portal);
socket.connect(socketAddress, SOCKET_TIMEOUT);
FragmentManager fm = getFragmentManager();
md = new MyDialog("Send to " + ClientIP );
md.setRetainInstance(true);
md.setCancelable(true);
md.show(fm, "Sender");
//reset progress bar status
progressBarStatus = 0;
//reset filesize
fileSize = 0;
byte buf[] = new byte[1024];
File myFile = new File (path);
filelength = file.length();
OutputStream os = socket.getOutputStream();
FileInputStream fis = new FileInputStream(myFile);
BufferedInputStream bis = new BufferedInputStream(fis);
while ((len = bis.read(buf)) != -1) {
fileSize+=len;
os.write(buf, 0, len);
os.flush();
//count for progress bar
double d = (double) (fileSize * 100) / filelength;
progressBarStatus = (int) Math.round(d);
progressBarHandler.post(new Runnable() {
public void run() {
md.updateProgress(progressBarStatus);
}
});
}
os.close();
fis.close();
bis.close();
socket.close();
// ok, file is downloaded,
if (progressBarStatus >= 100) {
// sleep 2 seconds, so that you can see the 100%
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
isSent = true;
runOnUiThread(new Runnable() {
public void run() {
if(isSent) {
Toast.makeText(getApplicationContext(), "File Sent", Toast.LENGTH_SHORT).show();
}
}
});
md.dismiss();
}
} catch (IOException e) {
Log.e(TAG, "I/O Exception", e);
} finally {
if (socket != null) {
if (socket.isConnected()) {
try {
socket.close();
} catch (IOException e) {
// Give up
e.printStackTrace();
}
}
}
}
}
}).start();
}
我的接收器
public void Client (final String hostAddress) {
socketAddress = new InetSocketAddress(hostAddress, port);
socket = new Socket();
new Thread(new Runnable()
{
@Override
public void run() {
// TODO Auto-generated method stub
try {
//sent ip
socket.bind(null);
socket.connect(socketAddress, SOCKET_TIMEOUT);
PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
out.println(messsage);
out.flush();
out.close();
socket.close();
socket = null;
//receive file
socket = new Socket();
serverSocket = new ServerSocket(portal);
socket = serverSocket.accept();
final String name;
final String ext;
String[] tokens = filename.split("\\.(?=[^\\.]+$)");
name = tokens[0];
ext = tokens[1];
final File f = new File(Environment.getExternalStorageDirectory() + "/"
+ getPackageName() + "/" + name + System.currentTimeMillis()
+ "." + ext);
File dirs = new File(f.getParent());
if (!dirs.exists())
dirs.mkdirs();
f.createNewFile();
FragmentManager fm = getFragmentManager();
md = new MyDialog("Receive from " + HostIP);
md.setRetainInstance(true);
md.setCancelable(true);
md.show(fm, "Receiver");
//reset progress bar status
progressBarStatus = 0;
//reset filesize
fileSize = 0;
filelength = f.length();
InputStream is = socket.getInputStream();
FileOutputStream fos = new FileOutputStream(f);
BufferedOutputStream bos = new BufferedOutputStream(fos);
byte buf[] = new byte[1024];
while ((len = is.read(buf)) != -1) {
bos.write(buf, 0, len);
bos.flush();
fileSize+=len;
double d = (double) (fileSize * 100) / filelength;
progressBarStatus = (int) Math.round(d);
progressBarHandler.post(new Runnable() {
public void run() {
md.updateProgress(progressBarStatus);
}
});
}
is.close();
fos.close();
bos.close();
socket.close();
serverSocket.close();
if (progressBarStatus >= 100) {
// sleep 2 seconds, so that you can see the 100%
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
isSent = true;
// close the progress bar dialog
//progressBar.dismiss();
runOnUiThread(new Runnable() {
public void run() {
// some code #3 (that needs to be ran in UI thread)
if(isSent) {
Toast.makeText(getApplicationContext(), "File Received", Toast.LENGTH_SHORT).show();
btn.setEnabled(true);
}
}
});
md.dismiss();
}
} catch (IOException e) {
Log.e(TAG, "IO Exception.", e);
}
}
}).start();
}
我使用对话框片段因为我使用API 14 +
我的对话类
public class MyDialog extends DialogFragment {
ProgressBar mProgressBar;
String title;
public MyDialog (String title) {
this.title = title;
}
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.popup, container);
mProgressBar = (ProgressBar)view.findViewById(R.id.pb);
getDialog().setTitle(title);
getDialog().setCanceledOnTouchOutside(false);
return view;
}
@Override
public void onDestroyView()
{
if (getDialog() != null && getRetainInstance())
getDialog().setDismissMessage(null);
super.onDestroyView();
}
@Override
public void onCancel(DialogInterface dialog) {
// TODO Auto-generated method stub
super.onCancel(dialog);
Toast.makeText(getActivity().getApplicationContext(), "Connection lost. Retry", Toast.LENGTH_SHORT).show();
getActivity().finish();
}
public void updateProgress(int percent)
{
mProgressBar.setProgress(percent);
}
}
我不知道为什么我的代码无效，我的进度条不会更新，文件也不会发送。 有人可以帮帮我吗？先于
答案 0 :(得分：0)
你有很多代码，但只要我知道，接收器应该使用AsyncTask，我就是这样做的，它对我有用。而不是线程使用Asyncctask的Asynctask和OnProgressUpdate方法来更新主线程中的ProgressDialog。 例如：
public class getFile extends AsyncTask<Void, String, Void>
{
ProgressDialog pB;
String hostAddress=null;
InetSocketAddress socketAddress;
Socket socket=null;
ServerSocket serverSocket=null;
int port=3001;
int SOCKET_TIMEOUT = 3000;
public getFile(String _hostAddress, Context context)
{
this.pB = new ProgressDialog(context);
this.pB.setTitle(context.getText(R.string.sYourMessageText);
this.pB.setMessage(null);
this.pB.setProgressNumberFormat(null);
this.pB.setProgressPercentFormat(null);
this.pB.setCancelable(false);
Drawable d = getResources().getDrawable(R.drawable.x_greenprogress);
pB.setProgressDrawable(d);
pB.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
hostAddress=_hostAddress;
}
@Override
protected void onPreExecute()
{
this.pB.show();
}
@Override
protected Void doInBackground(Void... params)
{
try {
//sent ip
socketAddress = new InetSocketAddress(this.hostAddress, port);
socket = new Socket();
socket.bind(null);
socket.connect(socketAddress, SOCKET_TIMEOUT);
PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
out.println(messsage);
out.flush();
out.close();
socket.close();
socket = null;
//receive file
socket = new Socket();
serverSocket = new ServerSocket(portal);
socket = serverSocket.accept();
final String name;
final String ext;
String[] tokens = filename.split("\\.(?=[^\\.]+$)");
name = tokens[0];
ext = tokens[1];
final File f = new File(Environment.getExternalStorageDirectory() + "/"
+ getPackageName() + "/" + name + System.currentTimeMillis()
+ "." + ext);
File dirs = new File(f.getParent());
if (!dirs.exists())
dirs.mkdirs();
f.createNewFile();
InputStream is = socket.getInputStream();
FileOutputStream fos = new FileOutputStream(f);
BufferedOutputStream bos = new BufferedOutputStream(fos);
byte buf[] = new byte[1024];
while ((len = is.read(buf)) != -1)
{
bos.write(buf, 0, len);
bos.flush();
fileSize+=len;
// to update the progress bar just call:
this.publishProgress("" + (int) ((fileSize * 100) / filelength));
}
is.close();
fos.close();
bos.close();
socket.close();
serverSocket.close();
}
@Override
protected void onProgressUpdate(String... progress)
{
this.pB.setProgress(Integer.parseInt(progress[0]));
}
@Override
protected void onPostExecute(Void result)
{
if (this.pB.isShowing())
this.pB.dismiss();
}
}
编辑： 顺便说一下，为什么要连接到服务器，发送IP关闭连接并等待服务器连接？为什么不使用第一个套接字进行文件传输？这种联系已经建立。