Develop Reference

Json volley listview error incompatible types Adapter

I have been following some tutorials to retrieve json data and add it to a listview using volley. I have been stuck in this error trying to solve it for some time, so i had to seek out some help. I tried many examples, this one seems the most intuitive to learn, but i just cant get passed this error, thank you
i cant solve this error
this is my model class
public class Trilhos {
private int id;
private String titulo;
private int id_user;
private String dificuldade;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getTitulo() {
return titulo;
}
public void setTitulo(String titulo) {
this.titulo = titulo;
}
public int getId_user() {
return id_user;
}
public void setId_user(int id_user) {
this.id_user = id_user;
}
public String getDificuldade() {
return dificuldade;
}
public void setDificuldade(String dificuldade) {
this.dificuldade = dificuldade;
}
}
my adapter
public class AdapterTrilhos extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<Trilhos> triList;
public AdapterTrilhos(List<Trilhos> triList, Activity activity) {
this.activity = activity;
this.triList = triList;
}
#Override
public int getCount() {
return this.triList.size();
}
#Override
public Object getItem(int position) {
return this.triList.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.dadoslista, null);
TextView idtxt = (TextView)
convertView.findViewById(R.id.txtid);
TextView tittxt = (TextView)
convertView.findViewById(R.id.txttit);
TextView usertxt = convertView.findViewById(R.id.txtuser);
TextView diftxt = (TextView)
convertView.findViewById(R.id.txtdif);
Trilhos t = triList.get(position);
idtxt.setText(t.getId());
tittxt.setText(t.getTitulo());
usertxt.setText(t.getId_user());
diftxt.setText(t.getDificuldade());
return convertView;
}
}
my main_activity (listarTrilhos)
public class ListarTrilhos extends Activity {
private static final String
urlget="http://192.168.1.68/loginsignup/getTrilhos.php";
private ListView listView;
private AdapterTrilhos adapter;
private List<Trilhos> TrilhosList = new ArrayList<Trilhos>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listatrilhos);
listView=findViewById(R.id.listv);
adapter=new AdapterTrilhos(this,TrilhosList);
listView.setAdapter(adapter);
criarLista();
}
public void criarLista(){
RequestQueue mRequestQueue =
Volley.newRequestQueue(getApplicationContext());
JsonArrayRequest request = new JsonArrayRequest(
urlget,
new Response.Listener<JSONArray>(){
#Override
public void onResponse(JSONArray response) {
int count = response.length();
for(int i = 0; i < count; i++){
try {
JSONObject jo = response.getJSONObject(i);
Trilhos tri=new Trilhos();
tri.setId(jo.getInt("id"));
tri.setTitulo(jo.getString("titulo"));
tri.setId_user(jo.getInt("id_user"));
tri.setDificuldade(jo.getString("dificuldade"));
TrilhosList.add(tri);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Toast.makeText(getApplicationContext(), response.toString(),
Toast.LENGTH_LONG).show();
adapter.notifyDataSetChanged();
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), "onErrorResponse",
Toast.LENGTH_LONG).show();
}
}
);
Object TAG_REQUEST_QUEUE = new Object();
request.setTag(TAG_REQUEST_QUEUE);
mRequestQueue.add(request);
mRequestQueue.start();
}
}

I didn't read all of your code but noticed that you have constructor
public AdapterTrilhos(List<Trilhos> triList, Activity activity) {
this.activity = activity;
this.triList = triList;}
change adapter=new AdapterTrilhos(this, TrilhosList); to
adapter=new AdapterTrilhos(TrilhosList, this);

Fetching image from database into Android GridView

I am trying to fetch a text and image link from the database and add it to an ArrayList and then use it to display the text and image in a grid view. But it doesn't show up. It seems like the list items seem to be null when I try to add it.
What am I missing? I have gone through some answers and wasn't able to figure it out.
public final class GridAdapter extends BaseAdapter {
public static final String showUrl = "http://netbigs.com/apps/fetch.php";
String myJSON;
public String mvname;
String mvinfo;
public String rdate,imglink;
private Context mContext;
private final List<Item> mItems = new ArrayList<Item>();
private final LayoutInflater mInflater;
private static final String TAG_RESULTS = "result";
private static final String TAG_ID = "mvid";
private static final String TAG_NAME = "mvname";
private static final String TAG_IMG = "imglink";
private static final String TAG_DATE = "rdate";
private static final String TAG_MOVINF = "mvinfo";
JSONArray movies = null;
public GridAdapter(Context context) {
mItems.add(new Item(mvname,imglink));
mContext=context;
mInflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
return mItems.size();
}
#Override
public Item getItem(int i) {
return mItems.get(i);
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
View v = view;
ImageView picture;
TextView name;
getData();
if (v == null) {
v = mInflater.inflate(R.layout.grid_item, viewGroup, false);
v.setTag(R.id.picture, v.findViewById(R.id.picture));
v.setTag(R.id.text, v.findViewById(R.id.text));
}
picture = (ImageView) v.getTag(R.id.picture);
name = (TextView) v.getTag(R.id.text);
Item item = getItem(i);
Picasso.with(this.mContext).load(item.drawableId).into(picture);
name.setText(item.name);
System.out.println(item.name);
return v;
}
private static class Item {
public final String name;
public final String drawableId;
Item(String name, String drawableId) {
this.name = name;
this.drawableId = drawableId;
}
}
protected void showList(){
try{
JSONObject jsonObj = new JSONObject(myJSON);
movies = jsonObj.getJSONArray(TAG_RESULTS);
for (int i=0;i<movies.length();i++){
JSONObject c = movies.getJSONObject(i);
String mvid = c.getString(TAG_ID);
mvname = c.getString(TAG_NAME);
System.out.println(mvname);
imglink = c.getString(TAG_IMG);
System.out.println(imglink);
rdate = c.getString(TAG_DATE);
mvinfo = c.getString(TAG_MOVINF);
try {
}
catch (Exception e){
e.printStackTrace();
}
}
}
catch (JSONException e){
e.printStackTrace();
}
}
public void getData(){
class GetDataJSON extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
try {
String uri = showUrl;
URL url = new URL(uri);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
InputStream inputStream = null;
String result = null;
inputStream = con.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
return sb.toString();
} catch (Exception e) {
return null;
}
}
#Override
protected void onPostExecute(String result){
myJSON=result;
showList();
}
}
GetDataJSON g = new GetDataJSON();
g.execute();
}
}
This is the fragment to which the GridAdapter is attached.
public class MovieFragment extends Fragment {
public MovieFragment() {
// Required empty public constructor
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, final ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_movie, container, false);
GridView gridView = (GridView)view.findViewById(R.id.gridview);
gridView.setAdapter(new GridAdapter(getActivity()));
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent i;
switch (position){
case 0:
i = new Intent(MovieFragment.this.getActivity(),MovieDetail.class);
startActivity(i);
break;
case 1:
i = new Intent(MovieFragment.this.getActivity(),MovieDetail.class);
startActivity(i);
break;
case 2:
i = new Intent(MovieFragment.this.getActivity(),MovieDetail.class);
startActivity(i);
break;
case 3:
i = new Intent(MovieFragment.this.getActivity(),MovieDetail.class);
startActivity(i);
break;
}
}
});
return view;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
#Override
public void onDestroy() {
super.onDestroy();
}
#Override
public void onDetach() {
super.onDetach();
}
}

You are calling getData() from your Adapter so it may possible that when you initialize it at that time your list is null.
Try calling that method form your activity or fragment and then pass the received data you received in your adapter class.
getView() is called multiple time when you scroll up or down so never call any api in that method
Provide the code where you are using this adapter.

the problem is you are not getting values from the DB.
you must get the values from the db first. by using Volley or some plugin like that(or Aysnc task. volley will be better i think.)

android ListActivity how to populate data with Json Volley Library

android ListActivity how to make Custom Adapter getter setter using ,call json Volley library populate data ListActivity ? could not populate data with Json how to implement ,Please Help me
my code
ItemFragment Class
public class ItemFragment extends ListActivity {
RequestParse requestParse;
MySharedPreferences prefs;
String UsrId;
Context context;
ArrayList<BizForumArticleInfo> list = new ArrayList<>();
private List<BizForumArticleInfo> CountryCodeNumber = new ArrayList<>();
MobileArrayAdapter adapter;
LinearLayoutManager mLayoutManager;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_view_android_example);
requestParse = new RequestParse();
prefs = MySharedPreferences.getInstance(this, SESSION);
UsrId = prefs.getString("UsrID", "");
context = getApplicationContext();
setListAdapter(new MobileArrayAdapter(this,0, list));
getJson(60);
}
public void getJson(final int limit){
requestParse.postJson(ConfigApi.postArticleBiz(), new RequestParse.VolleyCallBackPost() {
#Override
public void onSuccess(String result) {
list = parseResponse(result);
}
#Override
public void onRequestError(String errorMessage) {
}
#Override
public Map OnParam(Map<String, String> params) {
params.put("sessionid", UsrId);
params.put("offset", "0");
params.put("limit", String.valueOf(limit));
params.put("viewtype", "all");
params.put("access_token","e3774d357aa7d4bd14e9763b5459ee9cf7ebe36161c142551836ee510d98814a:b349b76b334a94b2");
return params;
}
});
}
public static ArrayList<BizForumArticleInfo> parseResponse(String response) {
ArrayList<BizForumArticleInfo> bizList = new ArrayList<>();
try {
JSONObject json = new JSONObject(response);
JSONArray data = json.getJSONArray(DATA);
for (int i = 0; i < data.length(); i++) {
BizForumArticleInfo ls = new BizForumArticleInfo();
JSONObject item = data.getJSONObject(i);
String ArticleTitle = item.getString("ArticleTitle");
String Article = item.getString("Article");
M.i("===================",ArticleTitle);//working
ls.setArticleTitle(ArticleTitle);
ls.setArticleArticle(Article);
bizList.add(ls);
}
} catch (JSONException e) {
e.printStackTrace();
}
return bizList;
}
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
String selectedValue = (String) getListAdapter().getItem(position);
Toast.makeText(this, selectedValue, Toast.LENGTH_SHORT).show();
Intent intent = new Intent();
intent.putExtra("selectedValue", selectedValue);
setResult(RESULT_OK, intent);
finish();
//startActivity(new Intent(v.getContext(), MainActivity.class));
}
}
Adapter Class
public class MobileArrayAdapter extends ArrayAdapter<BizForumArticleInfo> {
private Activity activity;
private ArrayList<BizForumArticleInfo> lPerson;
private static LayoutInflater inflater = null;
public MobileArrayAdapter (Activity activity, int textViewResourceId,ArrayList<BizForumArticleInfo> _lPerson) {
super(activity, textViewResourceId, _lPerson);
try {
this.activity = activity;
this.lPerson = _lPerson;
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
} catch (Exception e) {
}
}
public int getCount() {
return lPerson.size();
}
public BizForumArticleInfo getItem(BizForumArticleInfo position) {
return position;
}
public long getItemId(int position) {
return position;
}
public static class ViewHolder {
public TextView display_name;
public TextView display_number;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
final ViewHolder holder;
try {
if (convertView == null) {
vi = inflater.inflate(R.layout.list_mobile, null);
holder = new ViewHolder();
holder.display_name = (TextView) vi.findViewById(R.id.label);
vi.setTag(holder);
} else {
holder = (ViewHolder) vi.getTag();
}
holder.display_name.setText(lPerson.get(position).getArticleTitle());
} catch (Exception e) {
}
return vi;
}
}

How to implement autocompletetextview with listview?

I am getting response from server and display it using listview and it works fine,now what I am trying is i added autocompletetextview to search items by name,but when i run my app it crashes and showing errors..i already ask this
Tab1Activity.java
public class Tab1Activity extends ListActivity{
private ProgressDialog pDialog;
JSONArray Product=null;
private ListView listview;
ArrayList<HashMap<String,String>> aList;
ArrayList<HashMap<String, String>> arrayTemplist;
private static String PRODUCT_URL = "";
private static final String PRODUCT_DATA="Product";
private static final String PRODUCT_ID="productid";
private static final String PRODUCT_NAME="product_name";
private static final String PRODUCT_CODE="skucode";
private static final String PRODUCT_IMAGE="product_photo";
private static final String PRODUCT_WEIGHT="weight";
private static final String PRODUCT_SALERATE="sale_rate";
//private static final String PRODUCT_LOCATION="weight";
private CustomAdapterTabone adapter;
private TextView noacpt;
private AutoCompleteTextView inputSearch;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.list_view_tabone);
//noacpt=(TextView)findViewById(R.id.no_acceptedlist);
/*String strtext = getIntent().getStringExtra("id");
System.out.println("<<<<<<<< id : " + strtext);*/
final ListView listview = (ListView)findViewById(android.R.id.list);
//listview.setSelector( R.drawable.list_selector);
//listview.setSelector(R.drawable.listselector);
new LoadAlbums().execute();
aList = new ArrayList<HashMap<String, String>>();
final ListView lv = getListView();
inputSearch = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
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 < aList.size(); i++)
{
String currentString =aList.get(i).get(Tab1Activity.PRODUCT_NAME);
if (currentString.toLowerCase().startsWith(searchString ))
{
arrayTemplist.add(aList.get(i));
}
}
for (int i = 0; i < arrayTemplist.size(); i++)
{
String currentstrin = arrayTemplist.get(i).get(Tab1Activity.PRODUCT_NAME);
//Toast.makeText(getApplicationContext(), currentstrin, Toast.LENGTH_LONG).show();
}
adapter=new CustomAdapterTabone(getApplicationContext(), arrayTemplist);
listview.setAdapter(adapter);
/* SimpleAdapter adapters = new SimpleAdapter(Tab1Activity.this, arrayTemplist,R.layout.list_item_tabone, new String[] { PRODUCT_NAME
}, new int[] {
R.id.txtpronameacptedlist});
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
}
});
}
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
Intent intent = new Intent(getApplicationContext(), AllProductDetails.class);
intent.putExtra("productid", aList.get(position).get(PRODUCT_ID));
startActivity(intent);
}
class LoadAlbums extends AsyncTask<String, String, ArrayList<HashMap<String,String>>> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Tab1Activity.this);
pDialog.setMessage("Loading...");
pDialog.setIndeterminate(true);
// pDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.custom_progress));
pDialog.setCancelable(false);
pDialog.show();
}
protected ArrayList<HashMap<String,String>> doInBackground(String... args) {
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
ArrayList<HashMap<String,String>> data = new ArrayList<HashMap<String, String>>();
String jsonStr = sh.makeServiceCall(PRODUCT_URL, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
Product = jsonObj.getJSONArray(PRODUCT_DATA);
for (int i = 0; i < Product.length(); i++) {
JSONObject c = Product.getJSONObject(i);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(PRODUCT_ID, c.getString(PRODUCT_ID));
map.put(PRODUCT_NAME,c.getString(PRODUCT_NAME));
map.put(PRODUCT_CODE, c.getString(PRODUCT_CODE));
map.put(PRODUCT_IMAGE, c.getString(PRODUCT_IMAGE));
map.put(PRODUCT_WEIGHT, c.getString(PRODUCT_WEIGHT));
map.put(PRODUCT_SALERATE, c.getString(PRODUCT_SALERATE)+getResources().getString(R.string.rupee));
// map.put(INTEREST_ACCEPT_LOCATION, c.getString(INTEREST_ACCEPT_LOCATION));
// adding HashList to ArrayList
data.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return data;
}
protected void onPostExecute(ArrayList<HashMap<String,String>> result) {
super.onPostExecute(result);
// dismiss the dialog after getting all albums
if (pDialog.isShowing())
pDialog.dismiss();
// updating UI from Background Thread
aList = new ArrayList<HashMap<String, String>>();
aList.addAll(result);
adapter = new CustomAdapterTabone(getApplicationContext(),result);
setListAdapter(adapter);
aList.addAll(result);
adapter.notifyDataSetChanged();
}
}
CustomAdapter
public class CustomAdapterTabone extends BaseAdapter{
private Context context;
private ArrayList<HashMap<String,String>> listData;
private AQuery aQuery;
private static final String TAG_NAME="product_name";
private static final String TAG_PROFILE="skucode";
private static final String TAG_IMAGE="product_photo";
private static final String TAG_CAST="weight";
private static final String TAG_AGE="sale_rate";
// private static final String TAG_LOCATION="weight";
public CustomAdapterTabone(Context context,ArrayList<HashMap<String,String>> listData) {
this.context = context;
this.listData=listData;
aQuery = new AQuery(this.context);
}
#Override
public int getCount() {
return listData.size();
}
#Override
public Object getItem(int position) {
return listData.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = LayoutInflater.from(context).inflate(R.layout.list_item_tabone, null);
holder.propic = (ImageView) convertView.findViewById(R.id.propicaccept);
holder.txtproname = (TextView) convertView.findViewById(R.id.txtpronameacptedlist);
holder.txtproid = (TextView) convertView.findViewById(R.id.txtproidacptedlist);
holder.txtprofilecast = (TextView) convertView.findViewById(R.id.txtprofilecastacptedlist);
holder.txtprofileage = (TextView) convertView.findViewById(R.id.txtprofileageacptedlist);
// holder.txtprofileplace = (TextView) convertView.findViewById(R.id.txtprofileplaceacptedlist);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
holder.txtproname.setText(listData.get(position).get(TAG_NAME));
holder.txtproid.setText(listData.get(position).get(TAG_PROFILE));
holder.txtprofilecast.setText(listData.get(position).get(TAG_CAST));
holder.txtprofileage.setText(listData.get(position).get(TAG_AGE));
//holder.txtprofileplace.setText(listData.get(position).get(TAG_LOCATION));
aQuery.id(holder.propic).image(listData.get(position).get(TAG_IMAGE),true,true,0,R.drawable.ic_launcher);
// image parameter : 1 : memory cache,2:file cache,3:target width,4:fallback image
return convertView;
}
class ViewHolder{
ImageView propic;
TextView txtproname;
TextView txtproid;
TextView txtprofilecast;
TextView txtprofileage;
TextView txtprofileplace;
}
}

First create a custom adapter implements filterable:
public class MyFilterableAdapter extends BaseAdapter implements Filterable {
private Context context;
private List<String> items;
private List<String> filteredItems;
private ItemFilter mFilter = new ItemFilter();
public MyFilterableAdapter(Context context, List<String> items) {
//super(context, R.layout.your_row, items);
this.context = context;
this.items = items;
this.filteredItems = items;
}
#Override
public int getCount() {
return filteredItems.size();
}
#Override
public Object getItem(int position) {
return filteredItems.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.row_search_merchant, parent, false);
viewHolder = new ViewHolder();
viewHolder.tvTitle = (TextView) convertView.findViewById(R.id.tv_title);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
String location = filteredItems.get(position);
if (!location.isEmpty() || viewHolder != null) {
viewHolder.tvTitle.setText(location);
}
return convertView;
}
public static class ViewHolder {
TextView tvTitle;
}
private class ItemFilter extends Filter {
#Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
int count = items.size();
final List<String> tempItems = new ArrayList<>(count);
for (int i = 0; i < count; i++) {
if (items.get(i).toLowerCase().contains(filterString)) {
tempItems.add(items.get(i));
}
}
results.values = tempItems;
results.count = tempItems.size();
return results;
}
#SuppressWarnings("unchecked")
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filteredItems = (ArrayList<String>) results.values;
notifyDataSetChanged();
}
}
public Filter getFilter() {
return mFilter;
}
}
And than create a textwatcher
public class MyTextWatcher implements TextWatcher {
private MyCustomAdapter lAdapter;
public MyTextWatcher(MyCustomAdapter lAdapter) {
this.lAdapter = lAdapter;
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void afterTextChanged(Editable s) {
lAdapter.getFilter().filter(s.toString().toLowerCase());
}
}
And finally add your TextWatcher to your Search Edit Text:
final MyCustomAdapter lAdapter = new MyCustomAdapter(context, items);
EditText etSearch = (EditText) view.findViewById(R.id.et_search);
etSearch.addTextChangedListener(new SearchTextWatcher(lAdapter));
I hope this'll help you.

Cannot show image in listview from json

May be this question many times.
i am getting some data from server and showing in listview . every thing working fine but i am getting problem to show image in list view.
Here is my example code
public class MainActivity extends ListActivity {
private static String url = null;
private static final String book_name = "b_name";
private static final String book_detail = "b_publisher";
private static final String book_image = "b_image";
ProgressDialog progressDialog;
ListView lv;
String cus_id;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}
url = getResources().getString(R.string.url);
/*----Receiving data from Splash Activity-----*/
Bundle b = getIntent().getExtras();
cus_id = b.getString("custom_id");
new ProgressTask(MainActivity.this).execute();
}
class ProgressTask extends AsyncTask<String, Integer, Boolean> {
ArrayList<HashMap<String, String>> jsonlist = new ArrayList<HashMap<String, String>>();
public ProgressTask(ListActivity activity) {
context = activity;
}
private Context context;
protected void onPreExecute() {
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setTitle("Processing...");
progressDialog.setMessage("Please wait...");
progressDialog.setCancelable(false);
progressDialog.show();
}
#Override
protected void onProgressUpdate(Integer... values) {
// set the current progress of the progress dialog
progressDialog.setProgress(values[0]);
}
#Override
protected void onPostExecute(final Boolean success) {
progressDialog.dismiss();
}
protected Boolean doInBackground(final String... args) {
url = url + "?custom_iid=" + cus_id;
Log.d("Passing Url", url);
CustomListAdapter jParser = new CustomListAdapter();
JSONArray json = jParser.getJSONFromUrl(url);
if (json != null) {
for (int i = 0; i < json.length(); i++) {
try {
JSONObject c = json.getJSONObject(i);
String b_image = c.getString("b_image");
String b_name = c.getString("b_name");
String b_detail = c.getString("b_publisher");
Log.d("detail", "" + b_image);
setBookImageUrl(b_image);
setBookName(b_name);
setBookDetail(b_detail);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
return null;
}
public String getBookImageUrl() {
return book_image;
}
public CharSequence getBookName() {
return book_name;
}
public CharSequence getBookDetail() {
return book_detail;
}
public void setBookImageUrl(String imgeUrl) {
book_image = imgeUrl;
}
public void setBookName(String b_name) {
book_name = b_name;
}
public void setBookDetail(String b_detail) {
book_detail = b_detail;
}
}
BookListAdapter class:
public class BookListAdapter extends ArrayAdapter<MainActivity> {
private ArrayList<MainActivity> bookModels;
private Context context;
public BookListAdapter(Context context, int resource,
ArrayList<MainActivity> bookModels) {
super(context, resource, bookModels);
this.bookModels = bookModels;
this.context = context;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View rowView = convertView;
if (rowView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
rowView = inflater.inflate(R.layout.row_list_item, null);
ViewHolder viewHolder = new ViewHolder();
viewHolder.bookIcon = (ImageView) rowView.findViewById(R.id.icon);
viewHolder.bookName = (TextView) rowView.findViewById(R.id.b_name);
viewHolder.bookDetail = (TextView) rowView
.findViewById(R.id.b_detail);
rowView.setTag(viewHolder);
}
final MainActivity bookModel = bookModels.get(position);
ViewHolder holder = (ViewHolder) rowView.getTag();
Picasso.with(context).load(bookModel.getBookImageUrl())
.into(holder.bookIcon);
holder.bookName.setText(bookModel.getBookName());
holder.bookDetail.setText(bookModel.getBookDetail());
return rowView;
}
#Override
public int getCount() {
return bookModels.size();
}
static class ViewHolder {
public ImageView bookIcon;
public TextView bookName;
public TextView bookDetail;
}
}
i can show book name and book detail in listview finely but image is not showing ..
i am getting value for book_image is http:\/\/X.X.X.X\/admin\/book_images\/232513pic9.png how to show in listview from that path..

I think you will need to implement your own adapter and use some library to display the image from URL.
My recommendation is Picasso
This is an example to implement your own adapter
BookListAdapter.java
public class BookListAdapter extends ArrayAdapter<BookModel> {
private ArrayList<BookModel> bookModels;
private Context context;
public BookListAdapter(Context context, int resource, ArrayList<BookModel> bookModels) {
super(context, resource, bookModels);
this.bookModels = bookModels;
this.context = context;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View rowView = convertView;
ViewHolder viewHolder;
if (rowView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
rowView = inflater.inflate(R.layout.book_child_list, parent, false);
ViewHolder viewHolder = new ViewHolder();
viewHolder.bookIcon = (ImageView) rowView
.findViewById(R.id.bookIcon);
viewHolder.bookName = (TextView) rowView
.findViewById(R.id.bookName);
viewHolder.bookDetail = (TextView) rowView
.findViewById(R.id.bookDetail);
rowView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) rowView.getTag();
}
final BookModel bookModel = bookModels.get(position);
Picasso.with(context).load(bookModel.getBookImageUrl()).into(viewHolder.bookIcon);
viewHolder.bookName.setText(bookModel.getBookName());
viewHolder.bookDetail.setText(bookModel.getBookDetail());
return rowView;
}
#Override
public int getCount() {
return bookModels.size();
}
static class ViewHolder {
public ImageView bookIcon;
public TextView bookName;
public TextView bookDetail;
}
}
BookModel.java
public class BookModel {
private String bookName;
private String bookDetail;
private String bookImageUrl;
public BookModel() {
bookName = "";
bookDetail = "";
bookImageUrl = "";
}
public String getBookName() {
return bookName;
}
public void setBookName(String bookName) {
this.bookName = bookName;
}
public String getBookDetail() {
return bookDetail;
}
public void setBookDetail(String bookDetail) {
this.bookDetail = bookDetail;
}
public String getBookImageUrl() {
return bookImageUrl;
}
public void setBookImageUrl(String bookImageUrl) {
this.icons = bookImageUrl;
}
}
Where BookModel class is a class where you can wrap your data (book name, book detail, book image) and pass it as a list to the adapter.
for example :
protected Boolean doInBackground(final String... args) {
url = url + "?custom_iid=" + cus_id;
Log.d("Passing Url", url);
CustomListAdapter jParser = new CustomListAdapter();
JSONArray json = jParser.getJSONFromUrl(url);
ArrayList<BookModel> bookModelList = new ArrayList<BookModel>();
if (json != null) {
for (int i = 0; i < json.length(); i++) {
try {
BookModel bookModel = new BookModel();
JSONObject c = json.getJSONObject(i);
String b_image = c.getString("b_image");
String b_name = c.getString("b_name");
String b_detail = c.getString("b_publisher");
Log.d("detail", "" + b_image);
bookModel.setBookName(b_name);
bookModel.setBookDetail(b_detail);
bookModel.setBookImageUrl(b_image);
bookModelList.add(bookModel);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
if(bookModelList.size()>0) {
BookListAdapter bookListAdapter = new BookListAdapter(MainActivity.this, R.id.yourlistview, bookModelList );
}
return null;
}
I hope my answer can help you!

lv.setAdapter(adapter);
use AQuery lib.
and just write this code in your custom adapter:
AQuery aQuery = new AQuery(context);
aQuery.id(your image id).image(your url,true,true);