September 23,2016
Here the coding of upload assignment.
class CustomAdapter extends BaseAdapter {
LayoutInflater lin=(LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
@Override
public int getCount() {
return list_sub.size();
}
@Override
public Object getItem(int position) {
return list_sub.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = lin.inflate(R.layout.assignment_layout, parent, false);
}
txt_sub = (TextView) convertView.findViewById(R.id.textView_sub);
txt_descr = (TextView) convertView.findViewById(R.id.textView_desc);
btn_dl = (Button) convertView.findViewById(R.id.button_dld);
btn_dl.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//String t = txt_sub.getText().toString();
//String d = txt_descr.getText().toString();
String downld = list_download.get(position).replace("\\\\","");
downloadFile(downld);
// DownloadAssignment dn = new DownloadAssignment();
//dn.execute( downld);
}
});
txt_sub.setText(list_sub.get(position));
txt_descr.setText(list_desc.get(position));
//btn_dl.setText(list_download.get(position));
return convertView;
}
}
void downloadFile(String path){
manager=(DownloadManager)getSystemService(DOWNLOAD_SERVICE);
String fileName = path.split("/")[path.split("/").length-1];
file = new File(Environment
.getExternalStorageDirectory().toString()
+ "/Download/"+fileName);
String temp_path = path.replaceAll(" " , "%20");
Uri uri = Uri.parse(temp_path);
DownloadManager.Request request = new DownloadManager.Request(uri);
request.setDescription("File Download").setTitle(fileName);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
request.setVisibleInDownloadsUi(true);
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI);
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
downloadReference = manager.enqueue(request);
//Toast.makeText(Assignment.this,"Download Queued",Toast.LENGTH_SHORT).show();
IntentFilter filter = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
long ref = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID,-1);
if(ref==downloadReference){
DownloadManager.Query query = new DownloadManager.Query();
query.setFilterById(ref);
Cursor cursor = manager.query(query);
cursor.moveToFirst();
int status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
String savedFileName = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
if(status==DownloadManager.STATUS_SUCCESSFUL){
AlertDialog.Builder builder = new AlertDialog.Builder(Assignment.this);
builder.setTitle("File saved");
builder.setMessage("File has been downloaded to the following directory:\n" + savedFileName);
builder.setNeutralButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.setPositiveButton("Open File", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
try {
Intent myIntent = new Intent(android.content.Intent.ACTION_VIEW);
String extension = android.webkit.MimeTypeMap.getFileExtensionFromUrl(Uri.fromFile(file).toString());
String mimetype = android.webkit.MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
myIntent.setDataAndType(Uri.fromFile(file),mimetype);
startActivity(myIntent);
} catch (Exception e) {
Toast.makeText(Assignment.this, "File is not valid or there is no application that can handle the file", Toast.LENGTH_SHORT).show();
}
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
else if(status==DownloadManager.STATUS_FAILED){
// Log.d("log_dm_status",cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_DESCRIPTION)));
AlertDialog.Builder builder = new AlertDialog.Builder(Assignment.this);
builder.setTitle("Error downloading attachment");
builder.setMessage("There was an error downloading the file. Please try again.");
builder.setNeutralButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
}
}
};
registerReceiver(receiver,filter);
}
class ShowAssignment extends AsyncTask<String,Integer,Boolean> {
@Override
protected Boolean doInBackground(String... params) {
ArrayList<NameValuePair> arrayList = new ArrayList<>();
arrayList.add(new BasicNameValuePair("stream", params[0]));
arrayList.add(new BasicNameValuePair("year",params[1]));
//downloadFile(params[0]);
try {
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(getString(R.string.path)+"download_assignment.php");
post.setEntity(new UrlEncodedFormEntity(arrayList));
HttpResponse r = client.execute(post);
HttpEntity e = r.getEntity();
InputStream is = e.getContent();
BufferedReader bf = new BufferedReader(new InputStreamReader(is));
StringBuilder b = new StringBuilder();
String line;
while ((line = bf.readLine()) != null) {
b.append(line);
}
String result = b.toString();
Log.d("result", result);
JSONObject jsonObject = new JSONObject(result);
String response = jsonObject.getString("result");
if (response.equalsIgnoreCase("ok")) {
JSONArray Subject = jsonObject.getJSONArray("Subject");
JSONArray Description = jsonObject.getJSONArray("desc");
JSONArray URL = jsonObject.getJSONArray("url");
for(int i=0;i<Subject.length();i++){
list_sub.add(Subject.getString(i));
list_desc.add(Description.getString(i));
list_download.add(URL.getString(i));
}
return true;
} else {
Log.d("no data fetched", response);
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
@Override
protected void onPostExecute(Boolean aBoolean) {
if(aBoolean==true){
Toast.makeText(Assignment.this,"Assignment Downloaded",Toast.LENGTH_SHORT).show();
CustomAdapter adapter = new CustomAdapter();
lv.setAdapter(adapter);
}
else{
Toast.makeText(Assignment.this,"Download failed!!",Toast.LENGTH_SHORT).show();
}
super.onPostExecute(aBoolean);
}
}
}
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