Android fragment optimization

Android fragment optimization - android

I am trying to develop the master-child page concept using master-detail flow of Android but it comes to the execution , the design is vulnerable to the critics about the poor performance. Would you please tell me some guidelines to increase the performance besudes loading bitmaps with options ?
The below is my code for fragment
import java.util.ArrayList;
import java.util.List;
import com.aaa.demo.asynctask.ResubmitOrder;
import com.aaa.demo.util.*;
import android.os.Bundle;
import android.content.Context;
import android.database.Cursor;
import android.support.v4.app.*;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class MoreActivity extends Fragment
{
private Bundle parameter;
private FileManager fileMan;
private SalesOrderRetransmitDbAdapter soDbRetransmitHelper;
public class RecordAdapter extends BaseAdapter
{
Context context;
private List<String> data;
RecordAdapter(List<String> data, Context context)
{
this.data = data;
this.context = context;
}
public int getCount()
{
return data.size();
}
public Object getItem(int position)
{
return data.get(position);
}
public long getItemId(int position)
{
return position;
}
public View getView(final int position, View convertView, ViewGroup parent)
{
View v = convertView;
if (v == null)
{
LayoutInflater vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.more_item, null);
}
final String item = data.get(position);
ImageView imageView = (ImageView) v.findViewById(R.id.more_item);
imageView.setImageDrawable(FileUtil.readImage(context, item + ".png"));
imageView.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
if(item.equalsIgnoreCase("more_update"))
{
((ActivityInTab) getActivity()).switchToFragment(new UpdateContentActivity());
Runtime.getRuntime().gc();
}
else if(item.equalsIgnoreCase("more_building"))
{
parameter = new Bundle();
parameter.putString("salesid", MainActivity.useridStatic);
Fragment s = new EOrderSystemBuildList();
s.setArguments(parameter);
((ActivityInTab) getActivity()).switchToFragment(s);
}
else if(item.equalsIgnoreCase("more_qc"))
{
parameter = new Bundle();
parameter.putString("salesid", MainActivity.useridStatic);
Fragment s = new EOrderList();
s.setArguments(parameter);
((ActivityInTab) getActivity()).switchToFragment(s);
}
else if(item.equalsIgnoreCase("more_password"))
{
parameter = new Bundle();
parameter.putString("salesid", MainActivity.useridStatic );
Fragment s = new EOrderChangePassword();
s.setArguments(parameter);
((ActivityInTab) getActivity()).switchToFragment(s);
}
else if(item.equalsIgnoreCase("more_logout"))
{
getActivity().finish();
Runtime.getRuntime().gc();
}
else if(item.equalsIgnoreCase("more_resubmit"))
{
ResubmitOrder resubmit = new ResubmitOrder(getActivity());
resubmit.execute(MainActivity.useridStatic + "|" + MainActivity.isFollowup);
}
}
});
return v;
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
final View v = inflater.inflate(R.layout.activity_more, container, false);
ArrayList<String> records = new ArrayList<String>();
records.add("more_building");
records.add("more_qc");
records.add("more_password");
records.add("more_logout");
records.add("more_update");
fileMan = new FileManager();
int count = fileMan.loadRecordRecursiveCount("SV_recordings","sales_recording");
Log.d("file count " , String.valueOf(count));
soDbRetransmitHelper= new SalesOrderRetransmitDbAdapter(getActivity());
soDbRetransmitHelper.open();
Cursor bu = soDbRetransmitHelper.fetchAllUnSubmitOrder(MainActivity.useridStatic);
bu.moveToFirst();
int data = bu.getCount();
Log.d("data count " , String.valueOf(data));
if(count > 0 || data > 0 ){
records.add("more_resubmit");
}
bu.close();
soDbRetransmitHelper.close();
GridView gridView = (GridView) v.findViewById(R.id.more_gridview);
gridView.setAdapter(new RecordAdapter(records, getActivity()));
return v;
}
}

Related

Why my listview not refresh when I press back button and come back to activity?

I'm tired already with my code. I'm writing chat application. My app consist of two activity. First activity has a listview of wich each row contain a last message which was send for the user while a second activity contain the whole conversation. In my app I used socket.io for android. My app works fine. Listview is refresh when a data is receive but when I press back button and then come back to the activity a listview not refresh itself already. In logs console I see that a data has received and "changed" method is called but listview is not refresh. What is wrong in belows code?
package com.example.seadog.fb_dialog;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Typeface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.URISyntaxException;
import java.util.ArrayList;
import io.socket.client.IO;
import io.socket.client.Socket;
import io.socket.emitter.Emitter;
public class MainActivity extends Activity {
public static ArrayList arrayList = new ArrayList();
public ListView listView;
public MyBaseAdapter adapter;
public TextView textView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
* Get Socket.io Object
*/
SocketIO socketIo = new SocketIO();
Socket mSocket = socketIo.getSocket(); // get socket
Integer id = socketIo.getId(); // get Website ID
if(mSocket == null) {
socketIo.Connection();
mSocket = socketIo.getSocket();
mSocket.on("message", new Emitter.Listener() {
/*
* Message Listener
*/
#Override
public void call(Object... args) {
Boolean isset = false;
try {
JSONObject object = (JSONObject) args[0];
String _id = object.getString("_id");
String message = object.getString("message");
JSONObject obj = new JSONObject();
obj.put("direction", "fb-lt");
obj.put("message", message);
obj.put("date", "2017-05-29T12:15:49.245Z");
for(int i = 0; i < arrayList.size(); i++){
ListData ld = (ListData) arrayList.get(i);
String id = ld.getId();
if(_id.equals(id)){
JSONArray Data = ld.getData();
Data.put(obj);
ld.setDescription(message);
arrayList.set(i, ld);
isset = true;
Log.d("LOG", message);
}
}
if(!isset) {
JSONArray jsonArray = new JSONArray();
jsonArray.put(obj);
ListData ld = new ListData();
ld.set_id(_id);
ld.setID(1);
ld.setTitle("Klient:");
ld.setDescription(message);
ld.setData(jsonArray);
arrayList.add(ld);
}
} catch (JSONException e) {
e.printStackTrace();
}
changed();
}
});
}
/*
* Populate a listview
*/
listView = (ListView) findViewById(R.id.listView);
adapter = new MyBaseAdapter(this, arrayList);
listView.setAdapter(adapter);
/*
* OnItemClickListener
*/
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(MainActivity.this, Conversation.class);
intent.putExtra("item", position);
startActivity(intent);
TextView textView = (TextView) view.findViewById(R.id.descitem);
textView.setTypeface(null, Typeface.NORMAL);
}
});
textView = (TextView) findViewById(R.id.count);
}
private void changed() {
runOnUiThread(new Runnable() {
#Override
public void run() {
adapter.notifyDataSetChanged();
Log.d("LOG:", "adapter refresh");
}
});
}
}
MyBaseAdapter Class:
package com.example.seadog.fb_dialog;
import android.content.Context;
import android.graphics.Typeface;
import android.util.Log;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import java.util.ArrayList;
public class MyBaseAdapter extends BaseAdapter {
Context context;
ArrayList<ListData> items = new ArrayList();
LayoutInflater inflater;
int id = 0;
public MyBaseAdapter(Context context, ArrayList items) {
this.context = context;
this.items = items;
inflater = LayoutInflater.from(this.context);
}
#Override
public int getCount() {
return items.size();
}
#Override
public ListData getItem(int position) {
return items.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
MyViewHolder mViewHolder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.list_item, parent, false);
mViewHolder = new MyViewHolder(convertView);
convertView.setTag(mViewHolder);
} else {
mViewHolder = (MyViewHolder) convertView.getTag();
}
ListData currentListData = getItem(position);
id = position > 0 ? getItem(position - 1).getID() : 0;
mViewHolder.Title.setText(currentListData.getTitle());
mViewHolder.Desc.setText(currentListData.getDescription());
if(1==1){
mViewHolder.Title.setVisibility(View.GONE);
}else {
if (id != currentListData.getID()) {
mViewHolder.Title.setVisibility(View.VISIBLE);
} else {
mViewHolder.Title.setVisibility(View.GONE);
}
}
return convertView;
}
private class MyViewHolder {
TextView Title, Desc;
public MyViewHolder(View item) {
Title = (TextView) item.findViewById(R.id.txtitem);
Desc = (TextView) item.findViewById(R.id.descitem);
Typeface title = Typeface.createFromAsset(context.getAssets(), "fonts/DroidSans.ttf");
Title.setTypeface(title);
Typeface desc = Typeface.createFromAsset(context.getAssets(), "fonts/DroidSans.ttf");
Desc.setTypeface(desc, Typeface.BOLD);
}
}
}

#Override
protected void onRestart() {
Intent intentBack = new Intent(getApplicationContext(),MainActivity.class);
startActivity(intentBack);
super.onRestart();
}

you did not have any callback after you back to this activity .
You can either override onResume() method or startActivityForResult and do something in the onAcitvityForResult method.

Android : Adapter is not working with Arraylist of Hashmap

I am trying to show some data offline from SQLite database. Data is coming fine but I am not able to show that on listview with adapter.
libraryList.clear();
libraryList = dBhelper.localQuestionBank(student_uuid, questionBankId);
if (libraryList.size() > 0) {
offSetFlag = libraryList.size();
libraryListView.setAdapter(questionBankAdapter);
questionBankAdapter.notifyDataSetChanged();
libraryListView.removeFooterView(loadMoreView);
loadingMore = false;
}
localQuestionBank method:
public ArrayList<Map<String, String>> localQuestionBank(String student_uuid, String question_bank_id) {
ArrayList<Map<String, String>> localQuestionBankList = new ArrayList<>();
ArrayList<Map<String, String>> questionBankList = new ArrayList<>();
String[] columns = new String[]{QUESTION_BANK_LABEL, AIP_UUID, QUESTION_SEQUENCE_NAME, QUESTION_MARKS, DESCRIPTION};
SQLiteDatabase db = mDbHelper.getWritableDatabase();
try {
Cursor cursor = db.query(LOCAL_QUESTION_BANK, columns, STUDENT_UUID+"=?" +" and "+ QUESTION_BANK_ID+"=?", new String[] { student_uuid, question_bank_id }, null, null, null);
if (cursor.moveToFirst()) {
do {
Map<String, String> subMap = new HashMap<String, String>();
subMap.put("aep_uuid", cursor.getString(cursor.getColumnIndex(AIP_UUID)));
subMap.put("question_marks", cursor.getString(cursor.getColumnIndex(QUESTION_MARKS)));
subMap.put("question_sequence_name", cursor.getString(cursor.getColumnIndex(QUESTION_SEQUENCE_NAME)));
subMap.put("description", cursor.getString(cursor.getColumnIndex(DESCRIPTION)));
subMap.put("question_bank_label", cursor.getString(cursor.getColumnIndex(QUESTION_BANK_LABEL)));
questionBankList.add(subMap);
} while (cursor.moveToNext());
localQuestionBankList.addAll(questionBankList);
questionBankList.clear();
}
cursor.close();
db.close();
} catch (SQLException sqlEx) {
sqlEx.printStackTrace();
}
return localQuestionBankList;
}
Listview and Adapter:
questionBankAdapter = new QuestionBankAdapter(getActivity(),libraryList);
libraryListView.setAdapter(questionBankAdapter);
questionBankAdapter:
package eukti.myafterclass.adapter;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.text.Html;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.BaseAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.Map;
import eukti.myafterclass.R;
import eukti.myafterclass.ui.QuestionBankDetailsView;
import eukti.myafterclass.utils.InternetConnectionDetector;
public class QuestionBankAdapter extends BaseAdapter {
private final Activity context;
private ArrayList<Map<String, String>> dashboardList;
private static LayoutInflater inflater=null;
public QuestionBankAdapter(Activity context,
ArrayList<Map<String, String>> dashList) {
this.context = context;
this.dashboardList = dashList;
if (context!=null) {
inflater = (LayoutInflater) context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
}
#Override
public int getCount() {
return dashboardList.size();
}
#Override
public Object getItem(int position) {
return dashboardList.size();
}
#Override
public long getItemId(int position) {
return position;
}
public class Holder
{
TextView sequence;
TextView marks;
WebView description;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
Holder holder=new Holder();
View rowView;
Log.d("LocalQBadapter:", dashboardList.get(position).get("question_sequence_name"));
rowView = inflater.inflate(R.layout.questionbank_items, null);
holder.sequence=(TextView) rowView.findViewById(R.id.questionSequenceName);
holder.marks=(TextView) rowView.findViewById(R.id.marks);
holder.description=(WebView) rowView.findViewById(R.id.description);
holder.description.getSettings().setJavaScriptEnabled(true);
String heading = dashboardList.get(position).get("question_sequence_name");
holder.sequence.setText(Html.fromHtml(heading));
holder.marks.setText("Marks : "+dashboardList.get(position).get("question_marks"));
String description = dashboardList.get(position).get("description");
String allAns = "<html><body>"+description.replace("\r\n", "<br/>")+"</body></html>";
holder.description.loadDataWithBaseURL(null, allAns, "text/html", "utf-8", null);
holder.description.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
return true;
}
});
holder.description.setLongClickable(false);
rowView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (!InternetConnectionDetector.isNetworkAvailable(context)) {
Toast.makeText(context, "Check your connection and try again.", Toast.LENGTH_LONG).show();
} else {
Intent redirect = new Intent(context, QuestionBankDetailsView.class);
redirect.putExtra("aep_uuid", dashboardList.get(position).get("aep_uuid"));
redirect.putExtra("question_sequence_name", dashboardList.get(position).get("question_sequence_name"));
redirect.putExtra("question_marks", dashboardList.get(position).get("question_marks"));
redirect.putExtra("description", dashboardList.get(position).get("description"));
context.startActivity(redirect);
}
}
});
return rowView;
}
}
It seems fine for me but data is not showing in Listview.

What you have typed
#Override
public Object getItem(int position) {
return dashboardList.size();
}
what i think it should be
#Override
public Object getItem(int position) {
return dashboardList.get(position);
}
try it and let me know

In your getItem() method you are returning the size. You need to give the actual object from the dataset dashboardList.
#Override
public Object getItem(int position) {
return dashboardList.get(position);
}
Also in the getView code you can call the getItem method instead of accessing the dataset directly.
Map<String, String> item = (Map<String, String>) getitem(position);
Bind your UI from this item object. Also try to use a Viewholder pattern in your Adapter.

Android GridView show detailed item

I got a source code about GridView.
But, I confused why some code were error.
These are the code. I got error on OnClick Method in MainActivity. Is here anyone help me? Thanks
public void onItemClick(AdapterView <? > AdapterView, View View, int Int, long Long) {
AdapterView = ((ImageItem) imageItems.get(Int)).getTitle();
toDetail(Int, AdapterView);
}
});
I want to each item that when it clicked shown the detailed image and text. I also get code like this but when I clicked "GingerBread" item, it goes to first item ("Astro")
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
ImageItem item = (ImageItem) parent.getItemAtPosition(position);
//Create intent
Intent intent = new Intent(getApplicationContext(), DetailActivity.class);
// intent.putExtra("android.intent.extra.TEXT", Integer.parseInt(getIntent().getStringExtra("android.intent.extra.TEXT")));
intent.putExtra("title", item.getTitle());
//Start details activity
startActivity(intent);
overridePendingTransition(R.anim.home_detail_entry, R.anim.home_detail_exit);
}
});
MainActivity.java
package com.acer.gridview;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends Activity {
public static String[] bitmapName = {
"Astro", "Bender", "Cupcake", "Donut", "Eclair",
"Froyo", "Gingerbread", "HoneyComb"
};
public static int[] bitmapId = {
R.drawable.Astro, R.drawable.Bender, R.drawable.Cupcake, R.drawable.Eclair,
R.drawable.Froyo, R.drawable.Gingerbread, R.drawable.HoneyComb
};
private GridViewAdapter gridAdapter;
private GridView gridView;
ArrayList < ImageItem > imageItems;
private ArrayList < ImageItem > getData() {
imageItems = new ArrayList();
BitmapFactory.Options localOptions = new BitmapFactory.Options();
localOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
int i = 0;
for (;;) {
if (i > 7) {
return imageItems;
}
Bitmap localBitmap = BitmapFactory.decodeResource(getResources(), bitmapId[i], localOptions);
imageItems.add(new ImageItem(localBitmap, bitmapName[i]));
i += 1;
}
}
#
Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_image_grid);
gridView = (GridView) findViewById(R.id.gridView);
gridAdapter = new GridViewAdapter(this, R.layout.row_grid, getData());
gridView.setAdapter(gridAdapter);
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView <? > AdapterView, View View, int Int, long Long) {
////////////This code shown error///////////////////
AdapterView = ((ImageItem) imageItems.get(Int)).getTitle();
toDetail(Int, AdapterView);
////////////This code shown error///////////////////
}
});
}
public void toDetail(int Int, String String) {
Intent localIntent = new Intent(this, DetailActivity.class);
localIntent.putExtra("android.intent.extra.TEXT", Integer.toString(Int));
localIntent.putExtra("title", String);
startActivity(localIntent);
}
/**
* A placeholder fragment containing a simple view.
*/
private boolean ActionBar(final Intent aIntent) {
try {
startActivity(aIntent);
return true;
} catch (ActivityNotFoundException e) {
return false;
}
}
public void showDialog() {
LayoutInflater inflater = getLayoutInflater();
View localView = inflater.inflate(R.layout.help_dialog, null);
((ImageView) localView.findViewById(R.id.imageView1)).setImageResource(R.drawable.makhrojulhuruf);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(localView);
builder.show();
}
#
Override
public boolean onCreateOptionsMenu(Menu menu) {}
#
Override
public boolean onOptionsItemSelected(MenuItem item) {
}
}
GridViewAdapter.java
package com.acer.gridview;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
/**
* Created by Acer on 08/02/2016.
*/
public class GridViewAdapter extends ArrayAdapter<ImageItem> {
private Context context;
private int layoutResourceId;
private ArrayList<ImageItem> data = new ArrayList();
public GridViewAdapter(Context context, int layoutResourceId, ArrayList<ImageItem> data) {
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
ViewHolder holder = null;
if (row == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new ViewHolder();
holder.imageTitle = (TextView) row.findViewById(R.id.text);
holder.image = (ImageView) row.findViewById(R.id.image);
row.setTag(holder);
} else {
holder = (ViewHolder) row.getTag();
}
ImageItem item = (ImageItem) data.get(position);
holder.imageTitle.setText(item.getTitle());
holder.image.setImageBitmap(item.getImage());
return row;
}
static class ViewHolder {
TextView imageTitle;
ImageView image;
}
}
ImageItem.java
package com.acer.gridview;
import android.graphics.Bitmap;
/**
* Created by Acer on 08/02/2016.
*/
public class ImageItem {
private Bitmap image;
private String title;
public ImageItem(Bitmap Bitmap, String String)
{
setImage(Bitmap);
setTitle(String);
}
public Bitmap getImage()
{
return this.image;
}
public String getTitle()
{
return this.title;
}
public void setImage(Bitmap Bitmap)
{
this.image = Bitmap;
}
public void setTitle(String String)
{
this.title = String;
}
}

How to implement endless scrolling listview

I am creating an application in which I am parsing data using Json parsing. I've implemented listview and in my response i have totalpage and current page objects,
A new user will get items from the first page. While the user is scrolling through the listview, the list expands with items from the next page (and the next and the next etc.)
this is my response
http://pastie.org/10259792
The following is code I've tried:
HomeFragment
public class HomeFragment extends Fragment {
// Listview Adapter
ListViewAdapter adapters;
// Connection detector
ConnectionDetector cd;
// Alert dialog manager
AlertDialogManager alert = new AlertDialogManager();
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONparserr jsonParser = new JSONparserr();
ArrayList<HashMap<String, String>> WebsiteList;
// albums JSONArray
JSONArray data = null;
String link_url;
ArrayList<HashMap<String, String>> arrayTemplist;
private AutoCompleteTextView inputSearch;
private ListView lv;
private static final String URL_ALBUMS = "";
private static final String WEBSITE_MENU_ID ="Brand_name";
private static final String TAG_MATCH="data";
//private static final String TAG_NAME="Brand_name";
private static final String TAG_PROFILE="id";
private static final String TAG_CAST="Company";
public HomeFragment(){}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
lv = (ListView)rootView.findViewById(R.id.listpehlu);
cd = new ConnectionDetector(getActivity());
WebsiteList = new ArrayList<HashMap<String, String>>();
// Loading Albums JSON in Background Thread
new LoadAlbums().execute();
// get listview
inputSearch = (AutoCompleteTextView)rootView.findViewById(R.id.autoCompleteTextViewhomefrag);
inputSearch.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
arrayTemplist= new ArrayList<HashMap<String,String>>();
String searchString =inputSearch.getText().toString().toLowerCase();
for (int i = 0; i < WebsiteList.size(); i++)
{
String currentString =WebsiteList.get(i).get(HomeFragment.this.WEBSITE_MENU_ID);
if (currentString.toLowerCase().startsWith(searchString ))
{
arrayTemplist.add(WebsiteList.get(i));
}
}
for (int i = 0; i < arrayTemplist.size(); i++)
{
String currentstrin = arrayTemplist.get(i).get(HomeFragment.this.WEBSITE_MENU_ID);
//Toast.makeText(getApplicationContext(), currentstrin, Toast.LENGTH_LONG).show();
}
SimpleAdapter adapters = new SimpleAdapter(getActivity(), arrayTemplist,R.layout.list_item_match, new String[] {WEBSITE_MENU_ID,TAG_CAST
}, new int[] {
R.id.txtbrndnm,R.id.txtbrndcomp});
lv.setAdapter(adapters);
}
#Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
#Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View view, int position,
long arg3) {
Selected_Product_Listing tf = new Selected_Product_Listing();
Bundle bundle = new Bundle();
bundle.putString("prducts_name", WebsiteList.get(position).get((WEBSITE_MENU_ID)));
// bundle.putString("prducts_name", aList.get(position).get(INTEREST_ACCEPT_NAME));
tf.setArguments(bundle);
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.frame_container, tf);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.addToBackStack(null);
ft.commit();
// Toast.makeText(getActivity(),"lets"+ WebsiteList.get(position).get(convertToBase64(convertToBase64(WEBSITE_MENU_ID))), Toast.LENGTH_LONG).show();
}
});
lv.setOnScrollListener(new OnScrollListener() {
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if(firstVisibleItem+visibleItemCount == totalItemCount && totalItemCount!=0)
{
}
}
});
return rootView;
}
public String convertToBase64(String text) {
byte[] data = null;
try {
data = text.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return Base64.encodeToString(data, Base64.DEFAULT);
}
class LoadAlbums extends AsyncTask<String, String, String> {
private JSONObject jsonObj;
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(getActivity());
pDialog.setMessage("Loading...");
pDialog.setIndeterminate(true);
pDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.custom_progress));
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
String json = jsonParser.makeHttpRequest(URL_ALBUMS, "GET",
params);
// Check your log cat for JSON reponse
Log.d("Albums JSON: ", "> " + json);
if (json != null) {
try {
jsonObj = new JSONObject(json);
// Getting JSON Array node
data = jsonObj.getJSONArray(TAG_MATCH);
String totpage=jsonObj.getString("total_page");
System.out.println("Total Page"+totpage);
String curpage=jsonObj.getString("current_page");
System.out.println("Total Page"+curpage);
// looping through All Contacts
for (int i = 0; i < data.length(); i++) {
JSONObject c = data.getJSONObject(i);
HashMap<String, String> map = new HashMap<String, String>();
map.put(WEBSITE_MENU_ID,c.getString(WEBSITE_MENU_ID));
map.put(TAG_PROFILE, c.getString(TAG_PROFILE));
map.put(TAG_CAST, c.getString(TAG_CAST));
WebsiteList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all albums
pDialog.dismiss();
// updating UI from Background Thread
ListAdapter adapter = new SimpleAdapter(
getActivity(), WebsiteList,
R.layout.list_item_match, new String[] {WEBSITE_MENU_ID,TAG_CAST
}, new int[] {
R.id.txtbrndnm,R.id.txtbrndcomp});
lv.setAdapter(adapter);
}
}
EndlessAdapter
public class EndLessAdapter extends ArrayAdapter<String> {
private Context context;
private List<String> items;
private int layoutId;
public EndLessAdapter(Context context, List<String> items, int LayoutId) {
super(context,LayoutId,items);
this.context = context;
this.items = items;
this.layoutId = LayoutId;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView == null)
convertView = ((LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(layoutId,parent,false);
TextView tView = (TextView)convertView.findViewById(R.id.txt);
tView.setText(items.get(position));
return convertView;
}
}
EndlessLisView
public class EndlessListView extends ListView implements OnScrollListener {
private Context context;
private View footer;
private boolean isLoading;
private EndLessListener listener;
private BaseAdapter adapter;
public EndlessListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.setOnScrollListener(this);
this.context = context;
}
public EndlessListView(Context context, AttributeSet attrs) {
super(context, attrs);
this.setOnScrollListener(this);
this.context = context;
}
public EndlessListView(Context context) {
super(context);
this.setOnScrollListener(this);
this.context = context;
}
#Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
// 4
public void addNewData() {
this.removeFooterView(footer);
// adapter.addAll(products);
adapter.notifyDataSetChanged();
isLoading = false;
}
public void setLoading()
{
isLoading = false;
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount) {
if(getAdapter() == null)
return;
if(getAdapter().getCount() == 0)
return;
int l = visibleItemCount + firstVisibleItem;
System.out.println("List View Total Item Count = "+totalItemCount+" , l = "+l+", is_loading = "+isLoading);
if(l >= totalItemCount && !isLoading){
// add footer layout
this.addFooterView(footer);
// set progress boolean
isLoading = true;
System.out.println("$$$$$$$$$ call loaddata $$$$$$$$$$$");
// call interface method to load new data
listener.loadData();
}
}
// Calling order from MainActivity
// 1
public void setLoadingView(int resId) {
footer = ((LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(resId, null); // footer = (View)inflater.inflate(resId, null);
this.addFooterView(footer);
System.out.println("addfooter ====######");
}
// 2
public void setListener(EndLessListener listener) {
this.listener = listener;
}
// 3
public void setAdapter(BaseAdapter adapter) {
super.setAdapter(adapter);
this.adapter = adapter;
this.removeFooterView(footer);
}
public void removeFooter(){
this.removeFooterView(footer);
}
}

You can achieve this by using the following library in Github
https://github.com/nicolasjafelle/PagingListView
Simple create your PagingAdapter and add it to com.paging.listview.PagingListView.
You have to implements the new Pagingable interface and its onLoadMoreItems() method. For example:
listView.setHasMoreItems(true);
listView.setPagingableListener(new PagingListView.Pagingable() {
#Override
public void onLoadMoreItems() {
if (pager < 3) {
new CountryAsyncTask(false).execute();
} else {
listView.onFinishLoading(false, null);
}
}
});
Finally you can use the onFinishLoading(boolean hasMoreItems, List newItems) method to update the list.
listView.onFinishLoading(true, newItems);
Also remember to use this package in your layout files:
<com.paging.listview.PagingListView
android:id="#+id/paging_list_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

Hello here you can find the nostra library for lazy loading and then you can
implement the following example for lazzy loading
https://github.com/nostra13/Android-Universal-Image-Loader
you can achieve Lazy loading by using the below
code
Lets start the coding about the lazy loading.
MainActivity.java
package com.sunil.lazyloading;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener{
private Button btnlist=null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnlist= (Button)findViewById(R.id.button_listview);
btnlist.setOnClickListener(this);
}
#Override
public void onClick(View arg0) {
Intent intent = new Intent(this, ImageListActivity.class);
intent.putExtra("stringarrayimage", Constants.IMAGES);
startActivity(intent);
}
}
CustomAdapter.java
package com.sunil.adapter;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.ImageLoadingListener;
import com.nostra13.universalimageloader.core.assist.SimpleImageLoadingListener;
import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
import com.nostra13.universalimageloader.core.display.RoundedBitmapDisplayer;
import com.sunil.lazyloading.R;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomAdapter extends BaseAdapter{
private String imageurl[]=null;
private Context context=null;
DisplayImageOptions doption=null;
private ImageLoadingListener animateFirstListener =null;
public CustomAdapter(Activity activity, String[] imageurl)
{
this.context=activity;
this.imageurl=imageurl;
doption=new DisplayImageOptions.Builder().showImageForEmptyUri(R.drawable.ic_empty).showImageOnFail(R.drawable.ic_error).showStubImage(R.drawable.ic_stub).cacheInMemory(true).cacheOnDisc(true).displayer(new RoundedBitmapDisplayer(20)).build();
animateFirstListener = new AnimateFirstDisplayListener();
}
#Override
public int getCount() {
return imageurl.length;
}
#Override
public Object getItem(int arg0) {
return arg0;
}
#Override
public long getItemId(int arg0) {
return arg0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
final ViewHolder holder;
if (convertView == null) {
view = ((Activity) context).getLayoutInflater().inflate(R.layout.item_list_row, parent, false);
holder = new ViewHolder();
holder.text = (TextView) view.findViewById(R.id.text);
holder.image = (ImageView) view.findViewById(R.id.image);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
holder.text.setText("Item " + (position + 1));
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.displayImage(imageurl[position], holder.image, doption, animateFirstListener);
return view;
}
private static class AnimateFirstDisplayListener extends SimpleImageLoadingListener {
static final List<string> displayedImages = Collections.synchronizedList(new LinkedList<string>());
#Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
if (loadedImage != null) {
ImageView imageView = (ImageView) view;
boolean firstDisplay = !displayedImages.contains(imageUri);
if (firstDisplay) {
FadeInBitmapDisplayer.animate(imageView, 500);
displayedImages.add(imageUri);
}
}
}
}
private class ViewHolder {
public TextView text;
public ImageView image;
}
}
</string></string>
ImageListActivity.java
package com.sunil.lazyloading;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.ListView;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.SimpleImageLoadingListener;
MainActivity.java
package com.sunil.lazyloading;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener{
private Button btnlist=null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnlist= (Button)findViewById(R.id.button_listview);
btnlist.setOnClickListener(this);
}
#Override
public void onClick(View arg0) {
Intent intent = new Intent(this, ImageListActivity.class);
intent.putExtra("stringarrayimage", Constants.IMAGES);
startActivity(intent);
}
}
CustomAdapter.java
package com.sunil.adapter;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.ImageLoadingListener;
import com.nostra13.universalimageloader.core.assist.SimpleImageLoadingListener;
import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
import com.nostra13.universalimageloader.core.display.RoundedBitmapDisplayer;
import com.sunil.lazyloading.R;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomAdapter extends BaseAdapter{
private String imageurl[]=null;
private Context context=null;
DisplayImageOptions doption=null;
private ImageLoadingListener animateFirstListener =null;
public CustomAdapter(Activity activity, String[] imageurl)
{
this.context=activity;
this.imageurl=imageurl;
doption=new DisplayImageOptions.Builder().showImageForEmptyUri(R.drawable.ic_empty).showImageOnFail(R.drawable.ic_error).showStubImage(R.drawable.ic_stub).cacheInMemory(true).cacheOnDisc(true).displayer(new RoundedBitmapDisplayer(20)).build();
animateFirstListener = new AnimateFirstDisplayListener();
}
#Override
public int getCount() {
return imageurl.length;
}
#Override
public Object getItem(int arg0) {
return arg0;
}
#Override
public long getItemId(int arg0) {
return arg0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
final ViewHolder holder;
if (convertView == null) {
view = ((Activity) context).getLayoutInflater().inflate(R.layout.item_list_row, parent, false);
holder = new ViewHolder();
holder.text = (TextView) view.findViewById(R.id.text);
holder.image = (ImageView) view.findViewById(R.id.image);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
holder.text.setText("Item " + (position + 1));
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.displayImage(imageurl[position], holder.image, doption, animateFirstListener);
return view;
}
private static class AnimateFirstDisplayListener extends SimpleImageLoadingListener {
static final List<string> displayedImages = Collections.synchronizedList(new LinkedList<string>());
#Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
if (loadedImage != null) {
ImageView imageView = (ImageView) view;
boolean firstDisplay = !displayedImages.contains(imageUri);
if (firstDisplay) {
FadeInBitmapDisplayer.animate(imageView, 500);
displayedImages.add(imageUri);
}
}
}
}
private class ViewHolder {
public TextView text;
public ImageView image;
}
}
</string></string>
ImageListActivity.java
package com.sunil.lazyloading;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.ListView;
import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
import com.sunil.adapter.CustomAdapter;
public class ImageListActivity extends Activity implements OnItemClickListener{
private ListView listview=null;
private String[] imageUrls;
protected ImageLoader imageLoader=null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.imagelist);
listview=(ListView)findViewById(R.id.listView_image);
imageLoader = ImageLoader.getInstance();
Bundle bundle = getIntent().getExtras();
imageUrls = bundle.getStringArray("stringarrayimage");
CustomAdapter adapter=new CustomAdapter(ImageListActivity.this, imageUrls);
listview.setAdapter(adapter);
listview.setOnItemClickListener(this);
}
#Override
public void onItemClick(AdapterView arg0, View arg1, int position, long arg3) {
Intent intent = new Intent(this, ImagePagerActivity.class);
intent.putExtra("imageurlpostion", imageUrls);
intent.putExtra("imagepostion", position);
startActivity(intent);
}
#Override
public void onBackPressed() {
AnimateFirstDisplayListener.displayedImages.clear();
super.onBackPressed();
}
private static class AnimateFirstDisplayListener extends SimpleImageLoadingListener {
static final List<string> displayedImages = Collections.synchronizedList(new LinkedList<string>());
#Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
if (loadedImage != null) {
ImageView imageView = (ImageView) view;
boolean firstDisplay = !displayedImages.contains(imageUri);
if (firstDisplay) {
FadeInBitmapDisplayer.animate(imageView, 500);
displayedImages.add(imageUri);
}
}
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.item_clear_memory_cache:
imageLoader.clearMemoryCache();
return true;
case R.id.item_clear_disc_cache:
imageLoader.clearDiscCache();
return true;
default:
return false;
}
}
}
activity_main.xml
<button android:id="#+id/button_listview" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="ListView ImageLoad">
imagelist.xml
<listview android:id="#+id/listView_image" android:layout_height="match_parent" android:layout_width="match_parent">
</listview>
item_list_row.xml
<imageview android:adjustviewbounds="true" android:contentdescription="#string/descr_image" android:id="#+id/image" android:layout_height="72dip" android:layout_margin="3dip" android:layout_width="72dip" android:scaletype="centerCrop">
<textview android:id="#+id/text" android:layout_gravity="left|center_vertical" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_width="fill_parent" android:textsize="22sp">
For the Example above you need to download the library universal image loader you can download the library ... happy coding :)

you didn't use EndlessListView in your Fragment. As I looked your response, it includes pagination. So, you need to request with page number to use endless scroll.
This is just flow for Endless Listview. If your code still doesn't work, I hope you can learn sample projects after read this messages. I added only parts you need. Thanks
Endless scroll only shows limited data on listview. When user scroll down to bottom, it will get next limited data from server. So you need to add current_page paramater in your request. I don't know exactly your api.
First, you need variable for current_page which initialize with 0
You have to know when to stop. You response has total_page field for that. Save and add validation
Then you need to know when to request next page. For that,you already have codes in onScroll within EndlessListView. That code calculate and tell when user scroll down to bottom and it called
listener.loadData();
to request new data. But you still need to add listener for that. You already have
public void setListener(EndLessListener listener) {
this.listener = listener;
}
You need to create Interface with the name EndlessListener and implements in your fragment. EndlessListener Interface will include loadData() function that request to server. After that you need to add listener for the listview.
endlessListView.setListener(this);

Try Loading data when listview reaches it's end. Implement OnScrollListener in your fragment. Refer this link Android - ListView to load more items when reached end

You MUST use Paging 3 library to resolve all problems in simplest way.

ListView XMl:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/orderlistview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
/>
</LinearLayout>
OrderList class
public class OrderList {
int _orderId;
int _orderincrement_id;
String _orderstatus;
String _orderdate;
String _ordership_to;
String _ordertotal;
String _ordercurrency_symbol;
// Empty constructor
public OrderList() {
}
// constructor
public OrderList(int _orderId, int _orderincrement_id, String _orderstatus,
String _orderdate, String _ordership_to, String _ordertotal,
String _ordercurrency_symbol) {
this._orderId = _orderId;
this._orderincrement_id = _orderincrement_id;
this._orderstatus = _orderstatus;
this._orderdate = _orderdate;
this._ordership_to = _ordership_to;
this._ordertotal = _ordertotal;
this._ordercurrency_symbol = _ordercurrency_symbol;
}
public int get_orderId() {
return _orderId;
}
public void set_orderId(int _orderId) {
this._orderId = _orderId;
}
public int get_orderincrement_id() {
return _orderincrement_id;
}
public void set_orderincrement_id(int _orderincrement_id) {
this._orderincrement_id = _orderincrement_id;
}
public String get_orderstatus() {
return _orderstatus;
}
public void set_orderstatus(String _orderstatus) {
this._orderstatus = _orderstatus;
}
public String get_orderdate() {
return _orderdate;
}
public void set_orderdate(String _orderdate) {
this._orderdate = _orderdate;
}
public String get_ordership_to() {
return _ordership_to;
}
public void set_ordership_to(String _ordership_to) {
this._ordership_to = _ordership_to;
}
public String get_ordertotal() {
return _ordertotal;
}
public void set_ordertotal(String _ordertotal) {
this._ordertotal = _ordertotal;
}
public String get_ordercurrency_symbol() {
return _ordercurrency_symbol;
}
public void set_ordercurrency_symbol(String _ordercurrency_symbol) {
this._ordercurrency_symbol = _ordercurrency_symbol;
}
}
Activity
public class OrderListFragment extends Fragment {
View rootView;
ListView lv;
List<OrderList> list ;
MyListAdapter adt;
DatabaseHandler db ;
ProgressDialog progress;
SharedPreferences pref;
public OrderListFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragmentorderlist, container,
false);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}
lv = (ListView) rootView.findViewById(R.id.orderlistview);
db = new DatabaseHandler(getActivity());
list = db.getAllOrderList();
if(list.size() == 0){
progress = new ProgressDialog(getActivity());
progress.setMessage("Fetching Data.....");
progress.setIndeterminate(true);
progress.setCancelable(false);
progress.show();
pref = PreferenceManager.getDefaultSharedPreferences(getActivity());
String customer_id = pref.getString("customer_id", null);
Log.v("log_tag", "customer_id"+customer_id);
if(customer_id != null){
Log.v("log_tag", "customer_id 2332 ::: "+customer_id);
new FetchOrderListData().execute(customer_id);
}
}
adt = new MyListAdapter(getActivity());
lv.setAdapter(adt);
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> a, View v, int position,
long id) {
Bundle bundle = new Bundle();
bundle.putString("orderlist_increment_id", list.get(position).get_orderincrement_id()+"");
Fragment fragment = new OrderdetailFragment();
fragment.setArguments(bundle);
FragmentManager fragmentManager = OrderListFragment.this
.getActivity().getSupportFragmentManager();
FragmentTransaction mFragmentTransaction = fragmentManager
.beginTransaction();
mFragmentTransaction.addToBackStack(null);
mFragmentTransaction.replace(R.id.Frame_Layout, fragment)
.commit();
}
});
return rootView;
}
public class MyListAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public MyListAdapter(Context context) {
mInflater = LayoutInflater.from(context);
}
public int getCount() {
return list.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView,
ViewGroup parent) {
convertView = mInflater.inflate(R.layout.custom_orderlistdata,
null);
TextView ordernumbertxt = (TextView) convertView
.findViewById(R.id.ordernumberTxt);
TextView orderdate = (TextView) convertView
.findViewById(R.id.orderdateTxt);
TextView orderamount = (TextView) convertView
.findViewById(R.id.orderAmountTxt);
TextView orderSatusTxt = (TextView) convertView
.findViewById(R.id.orderSatusTxt);
ordernumbertxt.setText(Html.fromHtml("<b>Order Number : </b>"+list.get(position).get_orderincrement_id()+""));
orderdate.setText(list.get(position).get_orderdate());
orderSatusTxt.setText(list.get(position).get_orderstatus());
String parts = list.get(position).get_ordertotal();
double d = Double.parseDouble(parts);
double dval = roundTwoDecimals(d);
orderamount.setText(Html.fromHtml("<b>Total : </b>"+list.get(position).get_ordercurrency_symbol()+" "+dval));
return convertView;
}
public double roundTwoDecimals(double d) {
DecimalFormat twoDForm = new DecimalFormat("#.##");
return Double.valueOf(twoDForm.format(d));
}
}
private class FetchOrderListData extends AsyncTask<String, Void, JSONObject> {
#Override
protected void onPreExecute() {
}
#Override
protected JSONObject doInBackground(String... args) {
JSONObject listSize = null;
Integer cust_id = Integer.parseInt(args[0]);
try {
listSize = DBAda.getAllOrderListData(cust_id);
////*** call your HTTP Service over here ***////
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return listSize;
}
protected void onPostExecute(JSONObject jsonObj) {
db = new DatabaseHandler(getActivity());
if (progress != null) {
progress.hide();
}
if (jsonObj == null) {
return;
}
JSONArray json;
try {
json = jsonObj.getJSONArray("records");
for (int i = 0; i < json.length(); i++) {
JSONObject jobj;
try {
jobj = json.getJSONObject(i);
int order_id = Integer.parseInt(jobj.getString("order_id").toString());
int order_IncrementId = Integer.parseInt(jobj.getString("increment_id").toString());
String orderStatus = jobj.getString("status");
String orderdate = jobj.getString("date");
String ordershipto = jobj.getString("ship_to");
String ordertotal = jobj.getString("order_total");
String ordersymbol = jobj.getString("currency_symbol");
//db.addWishlistItem(new WishList(entity_id,quentity,comment,name,short_description,thumbnails,itemId));
db.addOrderListItem(new OrderList(order_id, order_IncrementId, orderStatus, orderdate, ordershipto, ordertotal, ordersymbol));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
lv = (ListView) rootView.findViewById(R.id.orderlistview);
db = new DatabaseHandler(getActivity());
list = db.getAllOrderList();
adt = new MyListAdapter(getActivity());
lv.setAdapter(adt);
}
}
}

Android unsorted List

I have created a listActivity with my own ListAdapter. The problem is that the list is viewed in order once launched. But When I scroll down, or go back from another activity, the listView is completely out of order.
I thought the problem was in ArrayList but no, the list is sorted and i'm sure of it because when I loop over all elements in the ArrayList they are printed in the log the same way I inserted them.
I pasted the adapter code below in case anyone would like to check it.
package com.anubis.mail;
import java.util.ArrayList;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
public class EmailAdapter extends BaseAdapter {
private ArrayList<EmailModel> elements;
private Context c;
public EmailAdapter(Context c, ArrayList<EmailModel> Emails) {
this.elements = Emails;
this.c = c;
}
public int getCount() {
return elements.size();
}
public Object getItem(int position) {
return elements.get(position);
}
public long getItemId(int id) {
return id;
}
public void Remove(int id) {
notifyDataSetChanged();
}
public void Add(EmailModel email) {
this.elements.add(email);
for (EmailModel e : elements){
Log.v("EmailAdapter", e.getSubject());
}
notifyDataSetChanged();
}
public View getView(int position, View convertView, ViewGroup parent) {
LinearLayout rowLayout;
EmailModel email = elements.get(position);
if (convertView == null) {
rowLayout = (LinearLayout) LayoutInflater.from(c).inflate (R.layout.inbox_item, parent, false);
TextView subject_textview = (TextView)rowLayout.findViewById(R.id.subject_textview);
subject_textview.setText(email.getSubject());
String body_hint = " - " + email.getBodyHint();
TextView bodyhint_textview = (TextView)rowLayout.findViewById(R.id.body_hint_textview);
bodyhint_textview.setText(body_hint);
String sender_name = get_sender_name(email.getSender());
TextView sender_name_textview = (TextView)rowLayout.findViewById(R.id.sender_textview);
sender_name_textview.setText(sender_name);
TextView date_time_textview = (TextView)rowLayout.findViewById(R.id.date_time_textview);
date_time_textview.setText(email.getTime());
} else {
rowLayout = (LinearLayout) convertView;
}
return rowLayout;
}
private String get_sender_name(String from) {
String[] sender = from.split("<");
String sender_name;
try {
sender_name = sender[0];
} catch (Exception e) {
sender_name = sender[1];
}
return sender_name;
}
}

You need to move code after the IF
if (convertView == null) {
rowLayout = (LinearLayout) LayoutInflater.from(c).inflate (R.layout.inbox_item, parent, false);
} else {
rowLayout = (LinearLayout) convertView;
}
TextView subject_textview = (TextView)rowLayout.findViewById(R.id.subject_textview);
subject_textview.setText(email.getSubject());
String body_hint = " - " + email.getBodyHint();
TextView bodyhint_textview = (TextView)rowLayout.findViewById(R.id.body_hint_textview);
bodyhint_textview.setText(body_hint);
String sender_name = get_sender_name(email.getSender());
TextView sender_name_textview = (TextView)rowLayout.findViewById(R.id.sender_textview);
sender_name_textview.setText(sender_name);
TextView date_time_textview = (TextView)rowLayout.findViewById(R.id.date_time_textview);
date_time_textview.setText(email.getTime());
return rowLayout;

Develop Reference

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