私は過去2日間立ち往生しています..私の場合、 onProgressUpdate() は呼び出されません..だから、進行状況バーを更新していません..誰か見て提案してください..ありがとう. ここに私のコードがあります
package com.example.downloadupload;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Log;
import com.dropbox.client2.DropboxAPI;
import com.dropbox.client2.ProgressListener;
import com.dropbox.client2.android.AndroidAuthSession;
import com.dropbox.client2.exception.DropboxException;
public class DownloadFile extends AsyncTask<Void, Long, Boolean> {
DropboxAPI<AndroidAuthSession> dDBApi;
Context dContext;
private final ProgressDialog uDialog;
private long dFileLen;
long bytess;
public DownloadFile(Context context,
DropboxAPI<AndroidAuthSession> mDBApi) {
dDBApi=mDBApi;
dContext=context.getApplicationContext();
uDialog = new ProgressDialog(context);
uDialog.setMax(100);
uDialog.setMessage("Downloading Image");
uDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
uDialog.show();
}
@Override
protected Boolean doInBackground(Void... params) {
String path1= Environment.getExternalStorageDirectory()+"/log.txt";
BufferedOutputStream out=null;
try {
File file = new File(path1);
out = new BufferedOutputStream(new FileOutputStream(file));
dDBApi.getFile("/log.txt", null,out,new ProgressListener() {
/* @Override
public long progressInterval() {
// Update the progress bar every half-second or so
return 500;
}*/
@Override
public void onProgress(long bytes, long total) {
// TODO Auto-generated method stub
bytess=bytes;
publishProgress(bytes);
}
});
} catch (DropboxException e) {
Log.e("DbExampleLog", "Something went wrong while downloading.");
} catch (FileNotFoundException e) {
Log.e("DbExampleLog", "File not found.");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (out != null) {
try {
out.close();
} catch (IOException e) {}
}
}
return null;
}
@Override
protected void onProgressUpdate(Long... progress) {
// TODO Auto-generated method stub
super.onProgressUpdate(progress);
int percent = (int)(100.0*(double)progress[0]/bytess + 0.5);
uDialog.setProgress(percent);
System.out.println("Hi progressing");
}
@Override
protected void onPostExecute(Boolean result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
uDialog.dismiss();
System.out.println("calling post execute");
}
}