September 20,2016
Today i have worked on the coding of upload assignment.
public void showFileChooser(View v) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("application/pdf");
intent.addCategory(Intent.CATEGORY_OPENABLE);
try {
startActivityForResult(Intent.createChooser(intent, "Select a file to upload"), 0);
} catch (Exception ex) {
// Potentially direct the user to the Market with a Dialog
Toast.makeText(this, "Error",
Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case 0:
if (resultCode == RESULT_OK) {
Uri uri = data.getData();
String path;
try {
path = getRealPathFromURI(uri);
Log.d("log_tag",path);
f = new File(path);
isFileSelected = true;
} catch (Exception e) {
e.printStackTrace();
}
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
private String getRealPathFromURI(Uri contentURI) {
String result;
Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
if (cursor == null) {
result = contentURI.getPath();
} else {
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Files.FileColumns.DATA);
result = cursor.getString(idx);
cursor.close();
}
return result;
}
class FetchSubject extends AsyncTask<String,Integer,Boolean> {
@Override
protected Boolean doInBackground(String... params) {
ArrayList<NameValuePair> arrayList = new ArrayList<>();
arrayList.add(new BasicNameValuePair("sem", params[0]));
arrayList.add(new BasicNameValuePair("stream", params[1]));
Log.d("param0", params[0]);
Log.d("param1", params[1]);
try {
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(getString(R.string.path) + "subject_fetch.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");
for (int i = 0; i < Subject.length(); i++) {
list_subject.add(Subject.getString(i));
att = list_subject.get(i).split(",");
//String[] items={ att.toString()};
}
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(UploadFile.this,"Notice Downloaded",Toast.LENGTH_SHORT).show();
ad = new ArrayAdapter<>(UploadFile.this, android.R.layout.simple_list_item_1, att);
sp_sub.setAdapter(ad);
}
super.onPostExecute(aBoolean);
}
}
class UploadAssign extends AsyncTask<String,Integer,Boolean>{
@Override
protected Boolean doInBackground(String... params) {
return uploadFile(params[0]);
}
@Override
protected void onPostExecute(Boolean aBoolean) {
super.onPostExecute(aBoolean);
if(aBoolean){
String year=sp_sem.getSelectedItem().toString();
String stream=sp_stream.getSelectedItem().toString();
String sub=edt_sub.getText().toString();
String desc=edt_desc.getText().toString();
String url=getString(R.string.path)+"Assignment/"+f.getName();
UploadAssignment up=new UploadAssignment();
up.execute(year,stream,sub,desc,url);
}
else{
Toast.makeText(UploadFile.this,"Uploading file failed",Toast.LENGTH_SHORT).show();
}
}
}
boolean uploadFile(String filepath) {
Log.d("log_tag",filepath);
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1024 * 1024;
String responseFromServer="";
String urlString=getString(R.string.path)+"upload_asgnmt.php";
try{
FileInputStream fileInputStream = new FileInputStream(new File(filepath));
URL url=new URL(urlString);
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + filepath + "\"" + lineEnd);
dos.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while(bytesRead>0){
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
fileInputStream.close();
dos.flush();
dos.close();
inStream = new DataInputStream(conn.getInputStream());
String str;
while ((str = inStream.readLine()) != null){
}
inStream.close();
return true;
}
catch(Exception e){
e.printStackTrace();
}
return false;
}
public void uploadAssignmentButton(View v) {
dia=new ProgressDialog(UploadFile.this);
dia.setTitle("Loading");
dia.show();
if(isFileSelected) {final AlertDialog.Builder builder=new AlertDialog.Builder(UploadFile.this);
builder.setTitle("Upload Notice");
builder.setMessage("Do you want to upload this notice??");
builder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int i) {
dia.dismiss();
new UploadAssign().execute(f.getAbsolutePath());
Toast.makeText(UploadFile.this,"Notice Uploaded!!",Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("no", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int i) {
dia.dismiss();
Toast.makeText(UploadFile.this,"Uploading Failed!!",Toast.LENGTH_SHORT).show();
}
});
AlertDialog dialog=builder.create();
dialog.show();
}
else{
Toast.makeText(UploadFile.this,"Please select a file!!",Toast.LENGTH_SHORT).show();
}
}
class UploadAssignment extends AsyncTask<String,Integer,Boolean>{
@Override
protected Boolean doInBackground(String... params) {
ArrayList<NameValuePair> list=new ArrayList<>();
list.add(new BasicNameValuePair("Semester",params[0]));
list.add(new BasicNameValuePair("Stream",params[1]));
list.add(new BasicNameValuePair("Subject",params[2]));
list.add(new BasicNameValuePair("Description",params[3]));
list.add(new BasicNameValuePair("URL",params[4]));
try{
HttpClient client=new DefaultHttpClient();
HttpPost post=new HttpPost(getString(R.string.path)+"upload_assignment.php");
post.setEntity(new UrlEncodedFormEntity(list));
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 res=b.toString();
Log.d("result",res);
JSONObject jsonObject=new JSONObject(res);
String resp=jsonObject.getString("result");
if(resp.equalsIgnoreCase("ok")) {
// Toast.makeText(NoticeUp.this, "Notice uploaded", Toast.LENGTH_SHORT).show();
return true;
}
else{
Log.d("no data stored",resp);
}
}
catch(Exception e){
e.printStackTrace();
}
return false;
}
@Override
protected void onPostExecute(Boolean aBoolean) {
if(aBoolean==true){
Toast.makeText(UploadFile.this,"Data inserted",Toast.LENGTH_SHORT).show();
}
else{
Toast.makeText(UploadFile.this,"Data not inserted",Toast.LENGTH_SHORT).show();
}
super.onPostExecute(aBoolean);
}
}
}
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