Save an item from a listview in to a textfile in android

Save an item from a listview in to a textfile in android - android

I am browsing an xml file from external usb storage (using otg cable, connected in the tablet/android phone) to be parsed.
Steps:
Browse for the file from external usb storage
Parse the xml file
Save the file in a text file
For the time being, I am now able to browse and parse the xml file then display the parsed file wherein it shows the needed information in a listview. Now, I want to save the displayed information as a text file and save it to the external sd card of the tablet. Here's the code:
Model.java :
public class Model {
String _model;
String _part;
String _sw;
String _desc;
// constructor
public Model() {
}
// constructor with parameters
public Model(String model, String part, String sw, String desc) {
this._model = model;
this._part = part;
this._sw = sw;
this._desc = desc;
}
// Set all methods
public void setModel(String model) {
this._model = model;
}
public void setPart(String part) {
this._part = part;
}
public void setSw(String sw) {
this._sw = sw;
}
public void setDesc(String desc) {
this._desc = desc;
}
// Get all methods
public String getModel() {
return this._model;
}
public String getPart() {
return this._part;
}
public String getSw() {
return this._sw;
}
public String getDesc() {
return this._desc;
}
//
#Override
public String toString() {
return "\n" + "Device" + "\n" + "\n"
+ "Model ID : " + _model + "\n"
+ "Part Number : " + _part + "\n"
+ "Software Version: " + _sw + "\n"
+ "Description : " + _desc ;
}
}
ModelParser.java :
public class ModelParser extends DefaultHandler{
static final String ERROR = "Errors";
static final String ID = "ID";
static final String PART = "PartNumber";
static final String SW = "SoftwareVersion";
static final String DESC = "Description";
private boolean done = false;
private String currentTag = null;
private Model current = null;
private ArrayList<Model> model = new ArrayList<Model>();
public ArrayList<Model> getItemsList() {
return model;
}
public ArrayList<Model> parse(Context context) {
try {
String file = ReadSystemActivity.getFilename();
file.toString();
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
XmlPullParser parser = factory.newPullParser();
FileInputStream fis = new FileInputStream(file);
parser.setInput(new InputStreamReader(fis));
int eventType = parser.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT && !done) {
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
model = new ArrayList<Model>();
break;
case XmlPullParser.START_TAG:
currentTag = parser.getName();
if (currentTag.equalsIgnoreCase(ERROR)) {
current = new Model();
}
else if (current != null) {
if (currentTag.equalsIgnoreCase(ID)) {
current.setModel(parser.nextText());
} else if (currentTag.equalsIgnoreCase(PART)) {
current.setPart(parser.nextText());
} else if (currentTag.equalsIgnoreCase(SW)) {
current.setSw(parser.nextText());
}else if (currentTag.equalsIgnoreCase(DESC)) {
current.setDesc(parser.nextText());
}
}
break;
case XmlPullParser.END_TAG:
currentTag = parser.getName();
if (currentTag.equalsIgnoreCase(ERROR) && current != null) {
model.add(current);
} else if (currentTag.equalsIgnoreCase(ERROR)) {
done = true;
}
break;
}
eventType = parser.next();
}
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return model;
}
}
And ReadActivity.java :
public class ReadActivity extends ListActivity implements OnClickListener {
public List<Model> model = null;
private String filename = "SystemInfo.txt";
String modd = modId.getModel();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_read);
new LoadSystemTask().execute();
Button save = (Button) findViewById(R.id.btnSave);
save.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
if (isSDCardWritable()) {
StringBuilder locationStrBuilder = new StringBuilder();
locationStrBuilder.append("Model ID: "+ modd);
String locationStr = locationStrBuilder.toString();
try {
File sdCard = Environment.getExternalStorageDirectory();
File directory = new File(sdCard.getAbsolutePath()+"/FileReader");
directory.mkdirs();
File myFile = new File(directory, filename);
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile, true);
OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
myOutWriter.append(locationStr);
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),"Done writing to SD Card",Toast.LENGTH_SHORT).show();
}
catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
} }
else
{
// SD Card Not Available
Toast.makeText(getBaseContext(),"SD Card Not Available",Toast.LENGTH_SHORT).show();
} //else
}// onClick
}); // btnSave
}
private class LoadSystemTask extends AsyncTask<String, Void, List<Model>> {
#Override
protected List<Model> doInBackground(String... args) {
// CALL XMLPULLPARSER & RETURN A LIST
ModelParser parser = new ModelParser();
model = parser.parse(getBaseContext());
return model;
}
#Override
protected void onPostExecute(List<Model> models) {
ArrayAdapter<Model> adapter = new ArrayAdapter<Model>(getBaseContext(), android.R.layout.simple_list_item_1, models);
setListAdapter(adapter);
}
}
public boolean isSDCardWritable() {
String status = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(status))
{
return true;
}
return false;
} //isSDCardWritable
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
Problem is, I want to save the Id but I am getting a null value in the SystemInfo.txt when I click the save button.

You're storing model inside another object and trying to retrieve it from a new object.
This is where you're storing your model object inside ModelParser
current = new GarminModel()
whereas you're trying to retrieve it from a new object inside ReadActivity
GarminModel modId = new GarminModel();
String modd = modId.getModel();
Get reference to your Model arraylist by calling ModelParser's getItemsList() inside ReadActivity and from it try to get your model objects
Check position of below two lines in the code below
ModelParser parser = new ModelParser();
ArrayList<Model> modelList = parser.getItemsList();
Model modd = modelList.get(0);
Note that you need to remove ModelParser parser = new ModelParser(); from LoadSystemTask
public class ReadActivity extends ListActivity implements OnClickListener {
public List<Model> model = null;
private String filename = "SystemInfo.txt";
ModelParser parser = new ModelParser();
//-----------------
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_read);
new LoadSystemTask().execute();
Button save = (Button) findViewById(R.id.btnSave);
save.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
if (isSDCardWritable()) {
ArrayList<Model> modelList = parser.getItemsList();
//-----
Model modd = modelList.get(0);
StringBuilder locationStrBuilder = new StringBuilder();
locationStrBuilder.append("Model ID: "+ modd);
String locationStr = locationStrBuilder.toString();
try {
File sdCard = Environment.getExternalStorageDirectory();
File directory = new File(sdCard.getAbsolutePath()+"/FileReader");
directory.mkdirs();
File myFile = new File(directory, filename);
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile, true);
OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
myOutWriter.append(locationStr);
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),"Done writing to SD Card",Toast.LENGTH_SHORT).show();
}
catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
} }
else
{
// SD Card Not Available
Toast.makeText(getBaseContext(),"SD Card Not Available",Toast.LENGTH_SHORT).show();
} //else
}// onClick
}); // btnSave
}
private class LoadSystemTask extends AsyncTask<String, Void, List<Model>> {
#Override
protected List<Model> doInBackground(String... args) {
// CALL XMLPULLPARSER & RETURN A LIST
model = parser.parse(getBaseContext());
return model;
}

Related

RecyclerView not showing JSON sent from localhost just blank screen

Hi guys I dont have much experience with AsyncTask and this is my first time using RecyclerView besides a couple of tutorials I done to learn about it.
If I use dummy data in EventActivity everything works fine and a list shown on the screen. But when I create an ArrayList of EventItems and pass that to the adapter it's just a blank screen. The JSON from localhost is being parsed and sent to the EventItem class. I have tried several things to get it to work but as my experience with AsyncTask and RecyclerView are limited I end up just crashing the app and getting a null pointer exception.
I think that the RecyclerView is being created before the JSON has been retrieved from localhost and this is what's causing the blank screen or null pointer exception but I'm not 100% sure and dont know how to fix the issue if I am correct.
Any help is appreciated.
EventActivity
public class EventActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_event);
fetchEvents();//call EventBackgroundWorker
//ArrayList<EventItem> eventList = new EventItem().getRecyclerList();//causes java null pointer exception
ArrayList<EventItem> eventList = new ArrayList<>();
//Dummie data
// eventList.add(new EventItem (1, "Title1", "Date", "endDate", "Location1", 5, 1111));
// eventList.add(new EventItem (R.drawable.ic_favourite, "Title2", "11/07/2018", "11/07/2018", "Wales", 10, 5));
// eventList.add(new EventItem (R.drawable.ramspeed_custom, "Title3", "11/01/2018", "11/09/2018", "Paris, France", 0, 90));
// eventList.add(new EventItem (R.drawable.ramspeed_custom, "Title4", "12/01/2018", "11/09/2018", "New York", 20, 500));
// eventList.add(new EventItem (R.drawable.ic_favourite, "Title5", "Mon 11/05/2015", "11/09/2018", "London, England", 5, 500));
// eventList.add(new EventItem (R.drawable.biker, "Title6", "Mon 11/05/2018", "20/07/2018", "Swords Dublin", 0, 500));
mRecyclerView = (RecyclerView) findViewById(R.id.event_recycler_view);
mRecyclerView.setHasFixedSize(true);//increase performance of app if recyclerView does not increase in size
mLayoutManager = new LinearLayoutManager(this);
// mAdapter = new EventAdapter(eventList);
mAdapter = new EventAdapter(eventList);//context added for testing //////////////////////////////
// mAdapter = new EventAdapter(new ArrayList<EventItem>(0));
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setAdapter(mAdapter);
// buildRecyclerView();
}
//run background thread
private void fetchEvents(){
// String username = "user";
// String userPassword = "password";
String startConnectionCondition = "event";
//this passes the context
EventBackgroundWorker backgroundWorker = new EventBackgroundWorker(this);
backgroundWorker.execute(startConnectionCondition, null);
}
/* private void buildRecyclerView(){
ArrayList<EventItem> eventList = new EventItem().getRecyclerList();
mRecyclerView = (RecyclerView) findViewById(R.id.event_recycler_view);
mRecyclerView.setHasFixedSize(true);//increase performance of app if recyclerView does not increase in size
mLayoutManager = new LinearLayoutManager(this);
// mAdapter = new EventAdapter(eventList);
mAdapter = new EventAdapter(eventList);//context added for testing
// mAdapter = new EventAdapter(new ArrayList<EventItem>(0));
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setAdapter(mAdapter);
}
*/
/* public void showEventList(boolean b){
ArrayList<EventItem> eventList = new ArrayList<>();
for(int i =0; i< eventList.size(); i++){
eventList.get(i);
Log.d("tag","eventList from main " + eventList);
}
mAdapter = new EventAdapter(eventList);
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setAdapter(mAdapter);
}*/
}//MainActivity
EventAdapter
public class EventAdapter extends RecyclerView.Adapter<EventAdapter.EventViewHolder> {
private ArrayList<EventItem> mEventList;
Context context;
//constructor for EventAdapter
public EventAdapter(ArrayList<EventItem> eventList){
// context =c;
mEventList = eventList;
Log.d("tag","EventAdapter eventlist variable called from constructor " + eventList);
}
public static class EventViewHolder extends RecyclerView.ViewHolder{
public ImageView mPromoImage;
public TextView mTitle;
public TextView mStartDate;
public TextView mEndDate;
public TextView mLocation;
public TextView mFee;
public ImageView mFavourite;
//constructor for EventViewHolder class
public EventViewHolder(View itemView) {
super(itemView);
// mPromoImage = (ImageView) itemView.findViewById(R.id.event_promotional_image);
mTitle = (TextView) itemView.findViewById(R.id.event_title_textView);
mStartDate = (TextView) itemView.findViewById(R.id.event_start_textView);
mEndDate = (TextView) itemView.findViewById(R.id.event_end_textView);
mLocation = (TextView) itemView.findViewById(R.id.event_location_textView);
mFee = (TextView) itemView.findViewById(R.id.event_fee_textView);
// mFavourite = (ImageView) itemView.findViewById(R.id.event_favourite_image);
Log.d("tag", "EventViewHolder being called");
}
}//EventViewHolder class
#Override
public EventViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_event, parent, false);
//create view holder
EventViewHolder viewHolder = new EventViewHolder(v);
return viewHolder;
}
//pass values to inflated XML Views in item_event.xml
#Override
public void onBindViewHolder(EventViewHolder holder, int position) {
EventItem currentEvent = mEventList.get(position);
// holder.mPromoImage.setImageResource(currentEvent.getEventPromoImage());
holder.mTitle.setText(currentEvent.getEventTitle());
holder.mStartDate.setText(currentEvent.getEventStartDate());
holder.mEndDate.setText(currentEvent.getEventEndDate());
holder.mLocation.setText(currentEvent.getEventLocation());
holder.mFee.setText(String.valueOf(currentEvent.getEventFee()));//int value passed
// holder.mFavourite.setImageResource(currentEvent.getEventFavourite());
//Log.d("tag", "position" + position );
Log.d("tag","eventAdapter " + currentEvent.getEventTitle());
}
//how many items there will be
#Override
public int getItemCount() {
return mEventList.size();
}
}
EventItem
public class EventItem {
private int mEventPromoImage;
private int mId;
private String mEventTitle;
private String mEventStartDate;
private String mEventEndDate;
private String mEventLocation;
private int mEventFee;
private int mEventViews;
// public EventItem(){}
public EventItem(int id, String eventTitle, String eventStartDate,
String eventEndDate, String eventLocation, int eventFee, int eventViews){
// mEventPromoImage = eventPromoImage;
mId = id;
mEventTitle = eventTitle;
mEventStartDate = eventStartDate;
mEventEndDate = eventEndDate;
mEventLocation = eventLocation;
mEventFee = eventFee;
mEventViews = eventViews;
Log.d("tag","EVENTITEM title EventItem" + mEventTitle);
// Log.d("tag","EVENTITEM startDate EventItem" + mEventStartDate );
// Log.d("tag","EVENTITEM endDate EventItem" + mEventEndDate );
// Log.d("tag","EVENTITEM address EventItem" + mEventLocation);
// Log.d("tag","EVENTITEM fee EventItem" + mEventFee);
}
public int getEventPromoImage() {
return mEventPromoImage;
}
public void setEventPromoImage(int mEventPromoImage) {
this.mEventPromoImage = mEventPromoImage;
}
public int getEventId() {
return mId;
}
public void setEventId(int mId){
this.mId = mId;
}
public String getEventTitle() {
Log.d("tag","getEventTitle() " + mEventTitle);
return mEventTitle;
}
public void setEventTitle(String mEventTitle) {
this.mEventTitle = mEventTitle;
}
public String getEventStartDate() {
return mEventStartDate;
}
public void setEventStartDate(String mEventStartDate) {
this.mEventStartDate = mEventStartDate;
}
public String getEventEndDate(){
return mEventEndDate;
}
public void setEventEndDate(String mEventEndDate){
this.mEventEndDate = mEventEndDate;
}
public String getEventLocation() {
return mEventLocation;
}
public void setEventLocation(String mEventLocation) {
this.mEventLocation = mEventLocation;
}
public int getEventFee() {
return mEventFee;
}
public void setEventFee(int mEventFee) {
this.mEventFee = mEventFee;
}
public int getEventViews(){
return mEventViews;
}
public void getEventViews(int mEventViews) {
this.mEventViews = mEventViews;
}
public ArrayList<EventItem> getRecyclerList(){
ArrayList event = new ArrayList();
event.add(mEventTitle);
event.add(mEventStartDate);
event.add(mEventEndDate);
event.add(mEventLocation);
event.add(mEventFee);
event.add(mEventViews);
return event;
}
}
EventBackgroundWorker
public class EventBackgroundWorker extends AsyncTask<String, Void, String> {
Context context;
AlertDialog alert;
public static final String REQUEST_URL = "http://10.0.2.2/m/event/";
public EventBackgroundWorker(Context ctxt) {
context = ctxt;
}
//Invoked on UI thread before doInBackground is called
#Override
protected void onPreExecute() {
alert = new AlertDialog.Builder(context).create();
alert.setTitle("Result from server");
}
#Override
protected String doInBackground(String... params) {
String type = params[0];//eventList
//String login_url = "http://10.0.2.2/m/event/";
if(type.equals("event")){
try {
String user_name = params[1];
URL url = new URL(REQUEST_URL);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
httpURLConnection.connect();//works without this connect Find out why
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
String post_data = URLEncoder.encode("getEvents", "UTF-8");
bufferedWriter.write(post_data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
//read response
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "iso-8859-1"));
String result = "";
String line;
while((line = bufferedReader.readLine()) != null){
result += line;
}
//parse JSON event Array
// Create an empty ArrayList that we can start adding events to
ArrayList<EventItem> eventArray = new ArrayList<>();
JSONArray baseJsonResponse = new JSONArray(result);
for(int i =0; i < baseJsonResponse.length(); i++){
JSONObject event = baseJsonResponse.getJSONObject(i);
int id = event.getInt("id");
String title = event.getString("title");
String address = event.getString("address");
String startDate = event.getString("startDate");
String endDate = event.getString("endDate");
int fee = event.getInt("fee");
int views = event.getInt("views");
//Send data to eventItem Object
EventItem eventObject = new EventItem(id,title,address,startDate,endDate,fee,views);
eventArray.add(eventObject);
/* Log.d("tag", "JSON id " + id);
Log.d("tag", "JSON title " + title);
Log.d("tag", "JSON address " + address);
Log.d("tag", "JSON startDate " + startDate);
Log.d("tag", "JSON endDate " + endDate);
Log.d("tag", "JSON fee " + fee);
Log.d("tag", "JSON views " + views);*/
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return result;
} catch (MalformedURLException e) {//added for URL object
e.printStackTrace();
} catch (IOException e) {
//HTPURLConnection
} catch (JSONException e) {
e.printStackTrace();
}
}
return null;
}
#Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
//results from doInBackground are passed here
#Override
protected void onPostExecute(String result) {
Log.d("tag", "onPostExecute called" + result);
alert.setMessage(result);
alert.show();
}
}

The AsyncTask creates eventArray but does nothing with it. doInBackground() should return the eventArray and onPostExecute() should set it as adapter content (by a Callback or by setting the Adapter instance at the AsyncTask object). Your Adapter should have a setter for the content which should call notifyDataSetChanged().

Loading listview Activity takes long and show black screen before appear

I created app that takes JSON with AsyncTask from server. When User click a button app starts new Activity and download data from server and show it as a items in ListView. The Problem is when I open new Activity it takes too long to load. When button is pressed app freeze on about one or two seconds and then show black screen for another 2/3 seconds. After that activity is displayed but it is very slow. It freeze every time user is scrolling or pressing button to display more options of custom adapter. Is there any way to make app more smooth? Json data that is downloaded is just simple JSONArray with JSONObjects that has 2 string values and one HTML format. This 3 values is display to user.
Part of Custom Adapter class
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
SuggestionList suggestionList = getItem(position);
int actualPosition = 0;
if (convertView == null) {
convertView = LayoutInflater.from(getContext()).inflate(R.layout.sugestion_list, parent, false);
}
final Button suggestionsButton = (Button) convertView.findViewById(R.id.suggestionsMore);
final TextView suggestionNumber = (TextView) convertView.findViewById(R.id.sugestionNumber);
final TextView suggestionDescription = (TextView) convertView.findViewById(R.id.suggestionDescription);
final ImageView bio = convertView.findViewById(R.id.sugestionBio);
final ImageView block = convertView.findViewById(R.id.sugestionBlock);
final ImageView call = convertView.findViewById(R.id.sugestionCall);
...
final Animation slideUp = AnimationUtils.loadAnimation(getContext(), R.anim.slideup);
final Animation slideDown = AnimationUtils.loadAnimation(getContext(), R.anim.slidedown);
final Handler handler = new Handler();
suggestionsButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (bioSuggestions.getVisibility() == View.GONE) {
bio.setVisibility(View.VISIBLE);
block.setVisibility(View.VISIBLE);
call.setVisibility(View.VISIBLE);
bioSuggestions.startAnimation(slideUp);
blockSuggestions.startAnimation(slideUp);
callSuggestions.startAnimation(slideUp);
} else if (bioSuggestions.getVisibility() == View.VISIBLE) {
bioSuggestions.startAnimation(slideDown);
blockSuggestions.startAnimation(slideDown);
callSuggestions.startAnimation(slideDown);
handler.postDelayed(new Runnable() {
#Override
public void run() {
bio.setVisibility(View.GONE);
block.setVisibility(View.GONE);
call.setVisibility(View.GONE);
}
}, 300);
}
}
});
if (actualPosition != position) {
if (bio.getVisibility() == View.VISIBLE) {
bio.setVisibility(View.GONE);
block.setVisibility(View.GONE);
call.setVisibility(View.GONE);
}
actualPosition = position;
}
JSONObject jsonValSuggestions = new getSugestions().sugestionsDetails(position, "suggestions");
try {
final String name = jsonValSuggestions.getString("client_name");
final String num = jsonValSuggestions.getString("client_number");
final String description = jsonValSuggestions.getString("client_description");
bio.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent suggestionsDetails = new Intent(view.getContext(), SuggestionsDetails.class);
suggestionsDetails.putExtra("client_number", num);
suggestionsDetails.putExtra("client_name", name);
suggestionsDetails.putExtra("client_description", description);
activity.startActivityForResult(suggestionsDetails, position);
}
});
block.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent suggestionBlock = new Intent(view.getContext(), BlockSuggestionsActivity.class);
activity.startActivity(suggestionBlock);
}
});
call.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent suggestionCall = new Intent(view.getContext(), CallSuggestionActivity.class);
suggestionCall.putExtra("client_number", num);
suggestionCall.putExtra("client_name", name);
activity.startActivity(suggestionCall);
}
});
} catch (Exception e) {
e.printStackTrace();
}
try {
if (suggestionList.suggestionName.equals("null") || suggestionList.suggestionName.equals("")) {
suggestionNumber.setText(suggestionList.suggestionNumber);
} else {
suggestionNumber.setText(suggestionList.suggestionName);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
suggestionDescription.setText(Html.fromHtml(suggestionList.suggestionDescription, Html.FROM_HTML_MODE_LEGACY));
} else {
suggestionDescription.setText(Html.fromHtml(suggestionList.suggestionDescription));
}
} catch (Exception e) {
Log.i("exception", e.getMessage());
}
return convertView;
}
Part of AsyncTask class
public static final String REQUEST_METHOD = "GET";
public static final int READ_TIMEOUT = 15000;
public static final int CONNECTION_TIMEOUT = 15000;
#Override
protected String doInBackground(String... params) {
String clientUrl = params[0];
String result;
String inputLine;
JSONObject obj;
String data;
String message;
try {
URL myUrl = new URL(clientUrl);
HttpURLConnection connection = (HttpURLConnection) myUrl.openConnection();
connection.setRequestMethod(REQUEST_METHOD);
connection.setReadTimeout(READ_TIMEOUT);
connection.setConnectTimeout(CONNECTION_TIMEOUT);
connection.connect();
InputStreamReader streamReader = new InputStreamReader(connection.getInputStream());
BufferedReader reader = new BufferedReader(streamReader);
StringBuilder stringBuilder = new StringBuilder();
while ((inputLine = reader.readLine()) != null) {
stringBuilder.append(inputLine);
}
reader.close();
streamReader.close();
result = stringBuilder.toString();
} catch (IOException e) {
e.printStackTrace();
result = null;
}
return result;
}
public String[] getSuggestionsList() {
String[] suggestionList = new String[5];
String result;
String status;
JSONObject listObj;
String suggestionsData;
JSONObject suggestionsDataObj;
JSONArray suggestionsDataArr;
String ClientsSugestionsUrl = "https://example.com/token=" + authToken;
getApiClientSugestions getSugestionsFromApi = new getApiClientSugestions();
try {
result = getSugestionsFromApi.execute(ClientsSugestionsUrl).get();
try {
listObj = new JSONObject(result);
status = listObj.getString("result");
suggestionsData = listObj.getString("suggestions");
suggestionsDataArr = new JSONArray(suggestionsData);
} catch (Exception e) {
e.printStackTrace();
suggestionsDataArr = null;
status = null;
}
suggestionList[3] = status;
suggestionList[4] = suggestionsDataArr.toString();
} catch (Exception e) {
e.printStackTrace();
}
return suggestionList;
}
Activity
public class CallsSuggestionsActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_calls_suggestions);
Slidr.attach(this);
getSupportActionBar().setTitle("Skontaktuj się");
}
#Override
protected void onResume() {
super.onResume();
CallsSuggestionList();
}
public void CallsSuggestionList() {
final ListView suggestionList = findViewById(R.id.sugestionList);
final ArrayList<SuggestionList> suggestionArray = new ArrayList<SuggestionList>();
SuggestionListAdapter suggestionListAdapter = new SuggestionListAdapter(getContext(), suggestionArray, this);
String[] suggestionListArray = new getSugestions().getSuggestionsList();
String suggStat = suggestionListArray[3];
String arrayList = suggestionListArray[4];
String clientName;
String clientNumber;
String clientDescription;
try {
JSONArray jsonArray = new JSONArray(arrayList);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject explrObject = jsonArray.getJSONObject(i);
clientName = explrObject.getString("client_name");
clientNumber = explrObject.getString("client_number");
clientDescription = explrObject.getString("client_description");
if (suggStat.equals("true")) {
SuggestionList suggestionList1 = new SuggestionList(clientName, clientDescription, clientNumber);
suggestionListAdapter.addAll(suggestionList1);
suggestionListAdapter.notifyDataSetChanged();
suggestionList.setAdapter(suggestionListAdapter);
}
}
} catch (Exception e) {
Log.i("exception", e.getMessage());
e.printStackTrace();
clientName = null;
clientDescription = null;
clientNumber = null;
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
onBackPressed();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
SuggestionList
public class SuggestionList {
public String suggestionNumber;
public String suggestionDescription;
public String suggestionCallType;
public String suggestionName;
public SuggestionList(
// String suggestionCallType,
String suggestionName, String suggestionDescription, String suggestionNumber) {
this.suggestionNumber = suggestionNumber;
// this.suggestionCallType = suggestionCallType;
this.suggestionName = suggestionName;
this.suggestionDescription = suggestionDescription;
}
}
Adapter are custom with custom view displayed to user. I use similar custom adapter to show content from sqlite that is on phone and there app isn't so slow. But when I open this activity it slow down dramatically. Also I noticed when I press back button it take very long to back to previous screen.

The problem is in the getSuggestionsList function. in this function, you are calling getSugestionsFromApi.execute(ClientsSugestionsUrl).get(); which make your code sync again. I mean your code is waiting this code to be executed.
One way (not right way, but easy way): you can call new getSugestions().getSuggestionsList(); in a new thread.
Second way, call getSugestionsFromApi.execute(ClientsSugestionsUrl) without get() function. But to get result of the code, you need to give an interface.
To get right usage: https://xelsoft.wordpress.com/2014/11/28/asynctask-implementation-using-callback-interface/

Downloading data from server and add this data to local database with sync

I'm developing my app, in which storing quotes.
Data about quotes I download from my server.
I want in order to user downloading 10 quotes (at that time data add to local database), and if he scrolled this 10 quotes, new data will be download (again 10).
For example, as in facebook tape (with adding data to local db).
But I also need sync local db with server db.
I do not understand how to combine all this.
Download data - Here I pass the id from which to download from the id from server db.
class DownloadAndParseJson extends AsyncTask<Integer, Void, ArrayList<QuoteObject>> {
interface AsyncResponse {
void processFinish(ArrayList<QuoteObject> output);
}
private AsyncResponse delegate = null;
DownloadAndParseJson(AsyncResponse delegate){
this.delegate = delegate;
}
private static final String TAG = "###" + "DownloadAndParseJson";
#Override
protected ArrayList<QuoteObject> doInBackground(Integer... params) {
Log.i(TAG, "Starting download quotes from " + params[0] + " id");
if (params.length == 0) {
return null;
}
int id = params[0];
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
String countriesJsonStr = null;
try {
final String BASIC_URL = "http://*******.com";
final String ID_PARAM = "id";
Uri builtUri = Uri.parse(BASIC_URL).buildUpon()
.appendQueryParameter(ID_PARAM, Integer.toString(id))
.build();
URL url = new URL(builtUri.toString());
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
return null;
}
countriesJsonStr = buffer.toString();
Log.v(TAG, "download end");
} catch (IOException e) {
Log.e(TAG, "Error", e);
return null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e(TAG, "Error", e);
}
}
}
Log.i(TAG, "End download quotes");
return getArrayParsedJson(countriesJsonStr);
}
#Override
protected void onPostExecute(ArrayList<QuoteObject> result) {
Log.i(TAG, "Downloaded " + result.size() + " quotes");
delegate.processFinish(result);
}
private ArrayList<QuoteObject> getArrayParsedJson(String jsonStr){
Gson gson = new Gson();
Type collectionType = new TypeToken<ArrayList<QuoteObject>>(){}.getType();
return gson.fromJson(jsonStr, collectionType);
}
}
Working with the database - here Im store Quote objects
public class RealmHelper {
private static final String TAG = "###" + "RealmHelper";
Context context;
public RealmHelper(Context context) {
this.context = context;
}
public void write(ArrayList<QuoteObject> quoteObjectArrayList) {
Realm.init(context);
Realm realm = Realm.getDefaultInstance();
realm.beginTransaction();
for (QuoteObject quoteObject : quoteObjectArrayList){
realm.copyToRealm(quoteObject);
}
realm.commitTransaction();
}
public ArrayList<QuoteObject> read() {
Realm.init(context);
Realm realm = Realm.getDefaultInstance();
return new ArrayList<>(realm.where(QuoteObject.class).findAll());
}
public void delete() {
Realm.init(context);
Realm realm = Realm.getDefaultInstance();
final RealmResults<QuoteObject> countries = realm.where(QuoteObject.class).findAll();
realm.executeTransaction(new Realm.Transaction() {
#Override
public void execute(Realm realm) {
countries.deleteAllFromRealm();
Log.i(TAG, "size = " + countries.size());
}
});
}
}
MainActivity
public class MainActivity extends AppCompatActivity
implements DownloadAndParseJson.AsyncResponse{
.
.
RVAdapter adapter;
private ArrayList<QuoteObject> quoteObjectArrayList;
.
.
protected void onCreate(){
.
.
.
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
adapter = new RVAdapter(this, quoteObjectArrayList);
recyclerView.setAdapter(adapter);
}
#Override
public void processFinish(ArrayList<QuoteObject> output) {
if (output.size() != 0) {
quoteObjectArrayList = output;
Log.i(TAG, "processFinish() returned outputArray size " + output.size());
} else
Toast.makeText(this, "Not found quotes", Toast.LENGTH_SHORT).show();
}
RecyclerView.Adapter - To display quotes Im using card view.
class RVAdapter extends RecyclerView.Adapter<RVAdapter.PersonViewHolder>
implements DownloadAndParseJson.AsyncResponse{
private static final String TAG = "###" + "RVAdapter";
private Context context;
private boolean hasMoreItems;
private ArrayList<QuoteObject> quoteObjectArrayList;
RVAdapter(Context context, ArrayList<QuoteObject> quoteObjectArrayList){
this.context = context;
this.hasMoreItems = true;
this.quoteObjectArrayList = quoteObjectArrayList;
Log.i(TAG, "quoteObjectArrayList = " + quoteObjectArrayList.size());
}
private void notifyNoMoreItems(){
hasMoreItems = false;
Toast.makeText(context, "No More Items", Toast.LENGTH_SHORT).show();
}
#Override
public RVAdapter.PersonViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.card_of_quote, viewGroup, false);
return new PersonViewHolder(view);
}
#Override
public void onBindViewHolder(final RVAdapter.PersonViewHolder holder, int position) {
Log.i(TAG, "Card position = " + position);
if (position == quoteObjectArrayList.size() && hasMoreItems){
new DownloadAndParseJson(this).execute(Integer.parseInt(quoteObjectArrayList.get(position).getId()));
}
holder.contentOfQuote.setText(quoteObjectArrayList.get(position).getQuote());
holder.authorQuote.setText(quoteObjectArrayList.get(position).getAuthor());
holder.ratingBar.setOnRatingChangeListener(new MaterialRatingBar.OnRatingChangeListener() {
#Override
public void onRatingChanged(MaterialRatingBar ratingBar, float rating) {
//ratingBar.setRight(Integer.parseInt(quoteObjectArrayList.get(position).getId()));
}
});
holder.btnShareQuote.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, holder.contentOfQuote.getText()
+ "\n" + holder.authorQuote.getText() );
sendIntent.setType("text/plain");
context.startActivity(sendIntent);
}
});
holder.btnViewComment.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//View Comments
}
});
}
#Override
public int getItemCount() {
return quoteObjectArrayList.size();
}
#Override
public void processFinish(ArrayList<QuoteObject> output) {
if (output.size() != 0) {
quoteObjectArrayList.addAll(output);
Log.i(TAG, "Total quoteArray Size = " + quoteObjectArrayList.size());
new RealmHelper(context).write(output); // NEED separate throw
} else notifyNoMoreItems();
}
static class PersonViewHolder extends RecyclerView.ViewHolder {
CardView cardView;
TextView contentOfQuote, authorQuote;
MaterialRatingBar ratingBar;
ImageButton btnViewComment, btnShareQuote;
TextView rating;
public PersonViewHolder(View itemView) {
super(itemView);
this.cardView = (CardView) itemView.findViewById(R.id.cardView);
this.contentOfQuote = (TextView) itemView.findViewById(R.id.contentOfQuote);
this.authorQuote = (TextView) itemView.findViewById(R.id.authorQuote);
this.btnViewComment = (ImageButton) itemView.findViewById(R.id.btnViewComment);
this.btnShareQuote = (ImageButton) itemView.findViewById(R.id.btnShareQuote);
this.ratingBar = (MaterialRatingBar) itemView.findViewById(R.id.ratingBar);
this.rating = (TextView) itemView.findViewById(R.id.txtRating);
}
}
}
Now I need to combine all this.
It should turn out:
To start with the data from local db.
If there is no data - download new (10 quotes).
Else take data from local db until they run out
Download 10 quotes from server bd, add to local and display they.
Or If there is no data Print out about it.
Sync local bd with server.
Help me please.
Thanks.

This would be much easier if you used RealmResults as intended along with RealmChangeListener and Realm's notification system. See the official documentation.
class DownloadAndParseJson extends AsyncTask<Integer, Void, Void> {
DownloadAndParseJson(){
}
private static final String TAG = "###" + "DownloadAndParseJson";
#Override
protected Void doInBackground(Integer... params) {
Log.i(TAG, "Starting download quotes from " + params[0] + " id");
if (params.length == 0) {
return null;
}
int id = params[0];
try {
final List<QuoteObject> quotes = retrofitService.getQuotes(id).execute().body();
if(quotes == null) {
throw new RuntimeException("Download failed");
}
try(Realm realm = Realm.getDefaultInstance()) {
realm.executeTransaction(new Realm.Transaction() {
#Override
public void execute(Realm realm) {
realm.insert(quotes);
}
});
}
} catch (Exception e) {
Log.e(TAG, "Error", e);
return null;
}
Log.i(TAG, "End download quotes");
return null;
}
#Override
protected void onPostExecute(Void ignored) {
}
}
And
class RVAdapter extends RealmRecyclerViewAdapter<QuoteObject, RVAdapter.PersonViewHolder> {
private static final String TAG = "###" + "RVAdapter";
RVAdapter(OrderedRealmCollection<QuoteObject> quotes) {
super(quotes, true);
}
// onCreateViewHolder
// onBindViewHolder
// view holder
}
And
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new RVAdapter(realm.where(QuotesObject.class).findAll()); // <-- RealmResults
recyclerView.setAdapter(adapter);
and some "did download all" kind of logic, although that needs a bit smarter error handling; and "is data being downloaded" so that you don't spam requests when you scrolled down.

Save change String on restart in Android

Im building an app where I have an Array list with strings and a button.
When I press the button it deletes the string from the list (with string.remove) and display it in another activity..
The problem is that when I close the app and reopen it everything goes back to normal. How to save the changes made?
Here is the code:
public class TasksActivity extends AppCompatActivity {
private static ArrayList<String> list;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_tasks);
final Button tasksbtn = (Button) findViewById(R.id.btnfortasks);
Button checkTask = (Button) findViewById(R.id.remove_case);
final TextView tasksView = (TextView) findViewById(R.id.tasks_textView);
final ArrayList<String> tasks = new ArrayList<String>();
tasks.add("one");
tasks.add("two");
tasks.add("three");
tasks.add("four");
tasks.add("five");
tasks.add("six");
Collections.shuffle(tasks);
tasksView.setText(tasks.get(0));
assert tasksbtn != null;
tasksbtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Collections.shuffle(tasks);
tasksView.setText(tasks.get(0));
}
});
checkTask.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(TasksActivity.this, CompletedTasks.class);
intent.putExtra("completedTasks", tasks.get(0));
tasks.remove(tasks.get(0));
startActivity(intent);
}
});
}
}
And the second Activity
public class CompletedTasks extends AppCompatActivity {
String completedTasks;
Global_Variable object = new Global_Variable();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_completed_tasks);
TextView completedTasksView = (TextView) findViewById(R.id.completed_tasks);
Intent intent = getIntent();
completedTasks = intent.getExtras().getString("completedTasks");
object.tasks.add(completedTasks + "\n");
String a = "";
for (int i = 0; i < object.tasks.size(); i++) {
a += object.tasks.get (i);
completedTasksView.setText(a);
Log.d("a", "a---------" + a);
}
}
}

You should probably give try to serialization. Please take look over below sample example.
public class SerializationDemo extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Person person = new Person();
person.setName("CoderzHeaven");
person.setAddress("CoderzHeaven India");
person.setNumber("1234567890");
//save the object
saveObject(person);
// Get the Object
Person person1 = (Person)loadSerializedObject(new File("/sdcard/save_object.bin")); //get the serialized object from the sdcard and caste it into the Person class.
System.out.println("Name : " + person1.getName());
}
public void saveObject(Person p){
try
{
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(new File("/sdcard/save_object.bin"))); //Select where you wish to save the file...
oos.writeObject(p); // write the class as an 'object'
oos.flush(); // flush the stream to insure all of the information was written to 'save_object.bin'
oos.close();// close the stream
}
catch(Exception ex)
{
Log.v("Serialization Save Error : ",ex.getMessage());
ex.printStackTrace();
}
}
public Object loadSerializedObject(File f)
{
try
{
ObjectInputStream ois = new ObjectInputStream(new FileInputStream(f));
Object o = ois.readObject();
return o;
}
catch(Exception ex)
{
Log.v("Serialization Read Error : ",ex.getMessage());
ex.printStackTrace();
}
return null;
}
Person implements Serializable //Added implements Serializable
{
String name="";
private String number="";
private String address="";
private static final long serialVersionUID = 46543445;
public void setName(String name)
{
this.name = name;
}
public void setNumber(String number)
{
this.number = number;
}
public void setAddress(String address)
{
this.address = address;
}
public String getName()
{
return name;
}
public String getNumber()
{
return number;
}
public String getAddress()
{
return address;
}
}
}

You could try saving your changes to the SharedPreferences. Then when you resatrt your app, read the changes from your ShraredPreferences and apply it to your ListView or whatever you are using.
You can read more about SharedPreferences here: https://developer.android.com/training/basics/data-storage/shared-preferences.html

How to wait for an activity to finish in asynctask

I know that the purpose of the AsyncTask is to run asynchronously with other tasks of the app and finish in the background, but apparently I need to do this, I need to start an activity from AsyncTask and since I cant extend an activity in this class I can not use startactivityforresult, so how can I wait till my activity finishes?
Here is my code:
public class ListSpdFiles extends AsyncTask<Void, Void, String[]> {
public AsyncResponse delegate = null;
private static final String TAG = "ListSpdFiles: ";
Context applicationContext;
ContentResolver spdappliationcontext;
public final CountDownLatch setSignal= new CountDownLatch(1);
private final ReentrantLock lock = new ReentrantLock();
String username = "";
/**
* Status code returned by the SPD on operation success.
*/
private static final int SUCCESS = 4;
private boolean createbutt;
private boolean deletebutt;
private String initiator;
private String path;
private String pass;
private String url;
private SecureApp pcas;
private boolean isConnected = false; // connected to PCAS service?
private String CurrentURL = null;
private PcasConnection pcasConnection = new PcasConnection() {
#Override
public void onPcasServiceConnected() {
Log.d(TAG, "pcasServiceConnected");
latch.countDown();
}
#Override
public void onPcasServiceDisconnected() {
Log.d(TAG, "pcasServiceDisconnected");
}
};
private CountDownLatch latch = new CountDownLatch(1);
public ListSpdFiles(boolean createbutt, boolean deletebutt, String url, String pass, Context context, String initiator, String path, AsyncResponse asyncResponse) {
this.initiator = initiator;
this.path = path;
this.pass= pass;
this.url= url;
this.createbutt= createbutt;
this.deletebutt=deletebutt;
applicationContext = context.getApplicationContext();
spdappliationcontext = context.getContentResolver();
delegate = asyncResponse;
}
private void init() {
Log.d(TAG, "starting task");
pcas = new AndroidNode(applicationContext, pcasConnection);
isConnected = pcas.connect();
}
private void term() {
Log.d(TAG, "terminating task");
if (pcas != null) {
pcas.disconnect();
pcas = null;
isConnected = false;
}
}
#Override
protected void onPreExecute() {
super.onPreExecute();
init();
}
#Override
protected String[] doInBackground(Void... params) {
CurrentURL = getLastAccessedBrowserPage();
// check if connected to PCAS Service
if (!isConnected) {
Log.v(TAG, "not connected, terminating task");
return null;
}
// wait until connection with SPD is up
try {
if (!latch.await(20, TimeUnit.SECONDS)) {
Log.v(TAG, "unable to connected within allotted time, terminating task");
return null;
}
} catch (InterruptedException e) {
Log.v(TAG, "interrupted while waiting for connection in lsdir task");
return null;
}
// perform operation (this is where the actual operation is called)
try {
return lsdir();
} catch (DeadServiceException e) {
Log.i(TAG, "service boom", e);
return null;
} catch (DeadDeviceException e) {
Log.i(TAG, "device boom", e);
return null;
}
}
#Override
protected void onPostExecute(String[] listOfFiles) {
super.onPostExecute(listOfFiles);
if (listOfFiles == null) {
Log.i(TAG, "task concluded with null list of files");
} else {
Log.i(TAG, "task concluded with the following list of files: "
+ Arrays.toString(listOfFiles));
}
term();
delegate.processFinish(username);
}
#Override
protected void onCancelled(String[] listOfFiles) {
super.onCancelled(listOfFiles);
Log.i(TAG, "lsdir was canceled");
term();
}
/**
* Returns an array of strings containing the files available at the given path, or
* {#code null} on failure.
*/
private String[] lsdir() throws DeadDeviceException, DeadServiceException {
Result<List<String>> result = pcas.lsdir(initiator, path); // the lsdir call to the
boolean crtbut = createbutt;
boolean dlbut= deletebutt;
ArrayList<String> mylist = new ArrayList<String>();
final Global globalVariable = (Global) applicationContext;
if (crtbut==false && dlbut == false){
if ( globalVariable.getPasswordButt()==false ) {
final boolean isusername = globalVariable.getIsUsername();
if (isusername == true) {
Log.i(TAG, "current url: " + CurrentURL);
if (Arrays.toString(result.getValue().toArray(new String[0])).contains(CurrentURL)) {
String sharareh = Arrays.toString(result.getValue().toArray(new String[0]));
String[] items = sharareh.split(", ");
for (String item : items) {
String trimmed;
if (item.startsWith("[" + CurrentURL + ".")) {
trimmed = item.replace("[" + CurrentURL + ".", "");
if (trimmed.endsWith(".txt]")) {
trimmed = trimmed.replace(".txt]", "");
mylist.add(trimmed.replace(".txt]", ""));
} else if (trimmed.endsWith(".txt")) {
trimmed = trimmed.replace(".txt", "");
mylist.add(trimmed.replace(".txt", ""));
}
Log.i(TAG, "list of files sharareh: " + trimmed);
} else if (item.startsWith(CurrentURL + ".")) {
trimmed = item.replace(CurrentURL + ".", "");
if (trimmed.endsWith(".txt]")) {
trimmed = trimmed.replace(".txt]", "");
mylist.add(trimmed.replace(".txt]", ""));
} else if (trimmed.endsWith(".txt")) {
trimmed = trimmed.replace(".txt", "");
mylist.add(trimmed.replace(".txt", ""));
}
Log.i(TAG, "list of files sharareh: " + trimmed);
}
}
}
globalVariable.setPopupdone(false);
Intent i = new Intent(applicationContext, PopUp.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("EXTRA_SESSION_ID", mylist);
applicationContext.startActivity(i);
username = globalVariable.getUsername();
}
else if (isusername == false)
Log.i(TAG, "Wrong Input Type For Username.");
}
if (result.getState() != SUCCESS) {
Log.v(TAG, "operation failed");
return null;
}
if (result.getValue() == null) {
Log.v(TAG, "operation succeeded but operation returned null list");
return null;
}
return result.getValue().toArray(new String[0]);
}
//}
if (result.getState() != SUCCESS) {
Log.v(TAG, "operation failed");
return null;
}
if (result.getValue() == null) {
Log.v(TAG, "operation succeeded but operation returned null list");
return null;
}
return result.getValue().toArray(new String[0]);
}
public String getLastAccessedBrowserPage() {
String Domain = null;
Cursor webLinksCursor = spdappliationcontext.query(Browser.BOOKMARKS_URI, Browser.HISTORY_PROJECTION, null, null, Browser.BookmarkColumns.DATE + " DESC");
int row_count = webLinksCursor.getCount();
int title_column_index = webLinksCursor.getColumnIndexOrThrow(Browser.BookmarkColumns.TITLE);
int url_column_index = webLinksCursor.getColumnIndexOrThrow(Browser.BookmarkColumns.URL);
if ((title_column_index > -1) && (url_column_index > -1) && (row_count > 0)) {
webLinksCursor.moveToFirst();
while (webLinksCursor.isAfterLast() == false) {
if (webLinksCursor.getInt(Browser.HISTORY_PROJECTION_BOOKMARK_INDEX) != 1) {
if (!webLinksCursor.isNull(url_column_index)) {
Log.i("History", "Last page browsed " + webLinksCursor.getString(url_column_index));
try {
Domain = getDomainName(webLinksCursor.getString(url_column_index));
Log.i("Domain", "Last page browsed " + Domain);
return Domain;
} catch (URISyntaxException e) {
e.printStackTrace();
}
break;
}
}
webLinksCursor.moveToNext();
}
}
webLinksCursor.close();
return null;
}
public String getDomainName(String url) throws URISyntaxException {
URI uri = new URI(url);
String domain = uri.getHost();
return domain.startsWith("www.") ? domain.substring(4) : domain;
}}
My Activity class:
public class PopUp extends Activity {
private static final String TAG = "PopUp";
ArrayList<String> value = null;
ArrayList<String> usernames;
#Override
protected void onCreate(Bundle savedInstanceState) {
final Global globalVariable = (Global) getApplicationContext();
globalVariable.setUsername("");
Bundle extras = getIntent().getExtras();
if (extras != null) {
value = extras.getStringArrayList("EXTRA_SESSION_ID");
}
usernames = value;
super.onCreate(savedInstanceState);
setContentView(R.layout.popupactivity);
final Button btnOpenPopup = (Button) findViewById(R.id.openpopup);
btnOpenPopup.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View arg0) {
LayoutInflater layoutInflater = (LayoutInflater) getBaseContext().getSystemService(LAYOUT_INFLATER_SERVICE);
View popupView = layoutInflater.inflate(R.layout.popup, null);
final PopupWindow popupWindow = new PopupWindow(popupView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
Button btnSelect = (Button) popupView.findViewById(R.id.select);
Spinner popupSpinner = (Spinner) popupView.findViewById(R.id.popupspinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(PopUp.this, android.R.layout.simple_spinner_item, usernames);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
popupSpinner.setAdapter(adapter);
popupSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
globalVariable.setUsername(usernames.get(arg2));
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
btnSelect.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
globalVariable.setPopupdone(true);
popupWindow.dismiss();
finish();
}
}
);
popupWindow.showAsDropDown(btnOpenPopup, 50, -30);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.poupup_menu, menu);
return true;
}}

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