comment afficher extraites des données json dans listview à l'aide de baseadapter

Je suis nouveau sur android et java.Récemment, je vais avoir des problème avec l'affichage de récupéré les données json dans listview à l'aide de baseadapter.
Au début, j'ai utilisé ce code

  @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new TheTask().execute();
}
class TheTask extends AsyncTask<Void,Void,String>
{
@Override
protected String doInBackground(Void... params) {
String str = null;
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/BSDI/show.php");
HttpResponse response = httpclient.execute(httppost);
str =  EntityUtils.toString(response.getEntity());     
} 
catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
return str;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
String response = result.toString();
try {
ArrayList<String> stringArray = new ArrayList<String>();
JSONArray new_array = new JSONArray(response);
for(int i = 0, count = new_array.length(); i< count; i++)
{
try {
JSONObject jsonObject = new_array.getJSONObject(i);
stringArray.add(jsonObject.getString("title").toString());
}
catch (JSONException e) {
e.printStackTrace();
}
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>   (MainActivity.this,R.layout.test_tuh,stringArray);            
ListView list= (ListView) findViewById(R.id.listView1);
list.setAdapter(adapter);
} catch (JSONException e) {
//TODO Auto-generated catch block
e.printStackTrace();
//tv.setText("error2");
} 
}
public boolean onCreateOptionsMenu(Menu menu) {
//Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

Ce code affiche extraites des données json avec succès. Mais il n'affiche qu'une seule ligne. J'ai besoin de plus d'une (deux) des lignes dans la liste. J'ai donc essayé ce code
et il ne fonctionne pas, il affiche un écran vide .

Mon code est ci-dessous,

 class TheTask extends AsyncTask<Void,Void,String>
{
@Override
protected String doInBackground(Void... params) {
String str = null;
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/BSDI/show.php");
HttpResponse response = httpclient.execute(httppost);
str =  EntityUtils.toString(response.getEntity());     
} 
catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
return str;
}
@Override
protected void onPostExecute(String result) {
//TODO Auto-generated method stub
super.onPostExecute(result);
String response = result.toString();
try {
arrayList=new ArrayList<get_set>();
ArrayList<String> stringArray = new ArrayList<String>();
JSONArray new_array = new JSONArray(response);
for(int i = 0, count = new_array.length(); i< count; i++)
{
try {
JSONObject jsonObject = new_array.getJSONObject(i);
stringArray.add(jsonObject.getString("title").toString());
}
catch (JSONException e) {
e.printStackTrace();
}
}
ListView listView;
adap= new BaseAdapter() {
LayoutInflater inflater=(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
@Override
public View getView(int position, View view, ViewGroup viewgroup) {
if (view==null) {
view=inflater.inflate(R.layout.bsdi, null);
}
TextView title_tuh=(TextView) view.findViewById(R.id.title1);
TextView notice_tuh=(TextView) view.findViewById(R.id.notice1);
title_tuh.setText(arrayList.get(position).getTitle());
notice_tuh=.setText(arrayList.get(position).getNotice());
return view;
}
@Override
public long getItemId(int arg0) {
//TODO Auto-generated method stub
return 0;
}
@Override
public Object getItem(int position) {
//TODO Auto-generated method stub
return arrayList.get(position);
}
@Override
public int getCount() {
//TODO Auto-generated method stub
return arrayList.size();
}
};
listView=(ListView) findViewById(R.id.listView1);
listView.setAdapter(adap);
} catch (JSONException e) {
//TODO Auto-generated catch block
e.printStackTrace();
//tv.setText("error2");
} 
}

Que je suis conscient de cela , le problème est ici

ArrayList<String> stringArray = new ArrayList<String>();
JSONArray new_array = new JSONArray(response);
for(int i = 0, count = new_array.length(); i< count; i++)
{
try {
JSONObject jsonObject = new_array.getJSONObject(i);
stringArray.add(jsonObject.getString("title").toString());
}
catch (JSONException e) {
e.printStackTrace();
}
}

Que je suis guesing qui extrait les données json est de stocker dans stringArray mais ce n'est pas utilisée plus tard. Si j'essaie de l'utiliser de cette manière , j'obtiens l'erreur

title_tuh.setText(stringArray .get(position).getTitle());
notice_tuh=.setText(stringArray .get(position).getNotice());

Si j'essaie de ne pas utiliser
Liste de tableaux stringArray = new ArrayList();

et l'utilisation

arrayList=new ArrayList(); au lieu de cela , comme cela, alors je reçois aussi des erreurs.

    arrayList=new ArrayList<get_set>();
JSONArray new_array = new JSONArray(response);
//JSONArray jsonArray = new JSONArray();
for(int i = 0, count = new_array.length(); i< count; i++)
{
try {
JSONObject jsonObject = new_array.getJSONObject(i);
arrayList.add(jsonObject.getString("title").toString());
//String in = mInflater.inflate(R.layout.custom_row_view, null);
}
catch (JSONException e) {
e.printStackTrace();
}
}

Je ne peux pas trouver comment faire pour résoudre ce problème.J'ai vu beaucoup de tutoriels en ligne, mais ceux ci n'était pas utile pour moi. S'il vous plaît aider moi.

Quel est votre problème exactement?
J'ai essayé de récupérer les données json et l'afficher dans la liste. J'ai récupéré json dta à partir de PHP et de les afficher dans une seule ligne listview. Mais j'ai besoin de l'afficher sur plusieurs lignes d'affichage de liste. Mon problème est ici. Je veux afficher plusieurs lignes listview . Dans chaque ligne , 1ère ligne "titre" et la deuxième ligne sera "avis" . J'ai partagé des codes ci-dessus pour vous donner une idée de ce que j'ai essayé , et afin que vous puissiez savoir où est ma faute
ici u nécessité de mettre en œuvre BaseAdpater au lieu de ArrayAdapter.
si vous me guider avec un code simple , alors il serait utile pour moi .
Tutoriel pour construire listView avec BaseAdapter à l'aide de JSON chercher à l'aide de Retrofit2 service freakyjolly.com/...

OriginalL'auteur Mushfiqul Tuhin | 2014-02-09

D'abord le besoin d'u t créer row_listitem.xml fichier comme:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="80dp"
android:background="@drawable/list_selector"
android:orientation="vertical"
android:padding="5dp" >
<ImageView
android:id="@+id/iv_icon_social"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_centerVertical="true"
android:background="@drawable/image_border"
android:src="@drawable/sms_t"
android:visibility="gone" />
<LinearLayout
android:id="@+id/thumbnail"
android:layout_width="fill_parent"
android:layout_height="85dp"
android:layout_marginRight="50dp"
android:layout_marginTop="0dp"
android:layout_toRightOf="@+id/iv_icon_social"
android:gravity="center_vertical"
android:orientation="vertical"
android:padding="5dip"
android:visibility="visible" >
<TextView
android:id="@+id/txt_ttlsm_row"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:text="Sample text"
android:textSize="18dp"
android:textStyle="bold" />
<TextView
android:id="@+id/txt_ttlcontact_row2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="0dp"
android:layout_marginTop="3dp"
android:paddingLeft="10dp"
android:maxEms="20"
android:maxLines="2"
android:singleLine="false"
android:ellipsize="end"
android:text="Sample text2"
android:textColor="#808080"
android:textSize="15dp"
android:textStyle="normal"
android:visibility="visible" />
</LinearLayout>
</RelativeLayout>

Maintenant, u besoin de créer Personnalisé BaseAdapter comme:

  public class BaseAdapter2 extends BaseAdapter {
private Activity activity;
//private ArrayList&lt;HashMap&lt;String, String&gt;&gt; data;
private static ArrayList title,notice;
private static LayoutInflater inflater = null;
public BaseAdapter2(Activity a, ArrayList b, ArrayList bod) {
activity = a;
this.title = b;
this.notice=bod;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return title.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if (convertView == null)
vi = inflater.inflate(R.layout.row_listitem, null);
TextView title2 = (TextView) vi.findViewById(R.id.txt_ttlsm_row); //title
String song = title.get(position).toString();
title2.setText(song);
TextView title22 = (TextView) vi.findViewById(R.id.txt_ttlcontact_row2); //notice
String song2 = notice.get(position).toString();
title22.setText(song2);
return vi;
}

}

Maintenant, u pouvez configurer votre activité principale comme:

public class MainActivity extends Activity {
ArrayList<String> title_array = new ArrayList<String>();
ArrayList<String> notice_array = new ArrayList<String>();
ListView list;
BaseAdapter2 adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = (ListView) findViewById(R.id.listView1);
new TheTask().execute();
}
class TheTask extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... params) {
String str = null;
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(
"http://10.0.2.2/BSDI/show.php");
HttpResponse response = httpclient.execute(httppost);
str = EntityUtils.toString(response.getEntity());
} catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
return str;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
String response = result.toString();
try {
JSONArray new_array = new JSONArray(response);
for (int i = 0, count = new_array.length(); i < count; i++) {
try {
JSONObject jsonObject = new_array.getJSONObject(i);
title_array.add(jsonObject.getString("title").toString());
notice_array.add(jsonObject.getString("notice").toString());
} catch (JSONException e) {
e.printStackTrace();
}
}
adapter = new BaseAdapter2(MainActivity.this, title_array, notice_array);
list.setAdapter(adapter);
} catch (JSONException e) {
//TODO Auto-generated catch block
e.printStackTrace();
//tv.setText("error2");
}
}
}
}

merci. Mais après l'exécution de l'application , il se bloque.Après avoir essayé d'environ une heure je n'ai pas réussi à trouver la raison. Avez-vous une solution?
publier vos logcat
Après avoir essayé aujourd'hui, j'ai corrigé ça. BTW, merci beaucoup pour votre aide. De son travail à la perfection .
yo bienvenue.
comment avez-vous fixé? Je suis JSONException: Fin de saisie à caractère 0

OriginalL'auteur M D

@Allen Chun , en fait elle n'est pas dans mon esprit actuellement que ce que j'ai changé dans mon code pour faire fonctionner mon code parfaitement. Mais je partage tous mes codes qui fonctionnent parfaitement.

Sa ma mise en page de code,

<?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" >
<TextView
android:id="@+id/fsr"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Notice Board"
android:textSize="20px" />
<TextView
android:id="@+id/err_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:gravity="center" />
<ListView
android:layout_width="wrap_content"
android:layout_height="match_parent" 
android:id="@+id/list_notice2"
android:layout_gravity="center" />
</LinearLayout>

C'est ma coutume listview mise en page des codes,

<?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" >
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" 
android:paddingTop="10dp"
android:layout_gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium" />
/>
<TextView
android:id="@+id/notice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Small Text"
android:paddingTop="5dp"
android:layout_gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>

sa ma l'activité nommée "panneau d'affichage" .

public class NoticeBoard extends Activity {
ArrayList<String> title_array = new ArrayList<String>();
ArrayList<String> notice_array = new ArrayList<String>();
ListView list;
base_adapter3 adapter;
TextView f,msg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list_notice);
list = (ListView) findViewById(R.id.list_notice2);
msg=(TextView) findViewById(R.id.err_msg);
new test_ays().execute();
}
class test_ays extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... params) {
String str = null ;
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/BSDI/show.php");
HttpResponse response = httpclient.execute(httppost);
str = EntityUtils.toString(response.getEntity());
} catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
return str;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if(result!=null) //add this
{  
String response = result.toString();
try {
JSONArray new_array = new JSONArray(response);
for (int i = 0, count = new_array.length(); i < count; i++) {
try {
JSONObject jsonObject = new_array.getJSONObject(i);
title_array.add(jsonObject.getString("title").toString());
notice_array.add(jsonObject.getString("notice").toString());
} catch (JSONException e) {
e.printStackTrace();
}
}
adapter = new base_adapter3(NoticeBoard.this, title_array, notice_array);
list.setAdapter(adapter);
//f=(TextView) findViewById(R.id.textTuh);
//f.setText(title_array);
} catch (JSONException e) {
//TODO Auto-generated catch block
e.printStackTrace();
//tv.setText("error2");
}
}
else{
msg.setText("You need a working data connection...");
}
}
}
}

Et sa ma personnalisé baseadapter codes,

public class base_adapter2 extends BaseAdapter {
private Activity activity;
//private ArrayList&lt;HashMap&lt;String, String&gt;&gt; data;
private static ArrayList title,notice;
private static LayoutInflater inflater = null;
public base_adapter2(Activity a, ArrayList b) {
activity = a;
this.title = b;
//this.notice=bod;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return title.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if (convertView == null)
vi = inflater.inflate(R.layout.bsdi_adapter, null);
TextView title2 = (TextView) vi.findViewById(R.id.txt1); //title
String song = title.get(position).toString();
title2.setText(song);
return vi;
}
}

OriginalL'auteur Mushfiqul Tuhin

Dans cet exemple, je me connecte Twitters public timeline JSON url.

package net.inchoo.demo.andy1;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class HomeActivity extends ListActivity {
/** Called when the activity is first created. */
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setListAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, this.fetchTwitterPublicTimeline()));        
}
public ArrayList<String> fetchTwitterPublicTimeline()
{
ArrayList<String> listItems = new ArrayList<String>();
try {
URL twitter = new URL(
"http://twitter.com/statuses/public_timeline.json");
URLConnection tc = twitter.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
tc.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
JSONArray ja = new JSONArray(line);
for (int i = 0; i < ja.length(); i++) {
JSONObject jo = (JSONObject) ja.get(i);
listItems.add(jo.getString("text"));
}
}
} catch (MalformedURLException e) {
//TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
return listItems;
}
}

Veuillez diriger votre attention sur le listItems.ajouter(jo.getString(“texte”)); ligne. C'est la partie que je suis en saisissant un “texte” de l'attribut/propriété du seul objet JSON. Pour obtenir un plus “visuelle” de l'image de l'ensemble des attributs/propriétés que vous voudrez peut-être jeter un oeil à la version XML de twitters public timeline. De cette façon, vous obtiendrez belle couleur XML dans votre navigateur, où vous pouvez voir tous les attributs disponibles.

Lien: http://inchoo.net/dev-talk/android-development/simple-android-json-parsing-example-with-output-into-listactivity/

Thankx Frère..

OriginalL'auteur Shubham

Parser Json:

public class jparser {
static InputStream istream = null;
static JSONObject jObj = null;
//static JSONArray jarray=null;
static String json = "";
//static JSONArray jarray = null;
//constructor
public jparser() {
}
public JSONObject getJFromUrl(String url) {
//Making HTTP request
//try {
//defaultHttpClient
StringBuilder builder = new StringBuilder();
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
/*HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
istream = httpEntity.getContent();*/
try{
HttpResponse response = httpClient.execute(httpPost);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 400) 
{
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) 
{
builder.append(line);
}
} 
else
{
Log.e("==>", "Failed to download file");
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(istream, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
istream.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
//try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
//return JSON String
return jObj;
//Parse String to JSON object
/*try {
jarray = new JSONArray( builder.toString());
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
//return JSON Object
return jarray;
}*/
}
}

OriginalL'auteur Chande Siddhi

            public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
//constructor
public JSONParser() {
}
//function get json from url
//by making HTTP POST or GET mehtod
@SuppressLint("NewApi")
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
//Making HTTP request
try {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
//check for request method
if(method == "POST"){
//request method is POST
//defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}else if(method == "GET"){
//request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
//try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
//return JSON String
return jObj;
}
}
<h1>Model</h1>
public class WorkModel {
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImagename() {
return imagename;
}
public void setImagename(String imagename) {
this.imagename = imagename;
}
String id,name,imagename;
public WorkModel(String s1,String s2,String s3)
{
this.id=s1;
name=s2;
imagename=s3;
}
}
<h1>listview fill</h1>
public class Work_in_process extends Fragment {
//////////////jsonparser implement
JSONParser jsonparser=new JSONParser();
JSONArray json_users=null;
JSONObject json;
/////////
ListView lst;
ArrayList<WorkModel> data=new ArrayList<WorkModel>();
WorkAdapter adapter;
Context con;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_work_in_process, container, false);
con=this.getActivity();
lst=(ListView)rootView.findViewById(R.id.work_listview);
new work_process().execute();
//Inflate the layout for this fragment
return rootView;
}
class  work_process extends AsyncTask<String,String,String>
{
public Dialog pDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(con);
pDialog.setMessage("Loading... Please wait...");
pDialog.setIndeterminate(true);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
data.clear();
List<NameValuePair> params = new ArrayList<NameValuePair>();
json = jsonparser.makeHttpRequest("your url","POST", params);
try {
int success = json.getInt("status");
if (success == 0)
{
return  "kbc";
}
else
{
json_users = json.getJSONArray("result");
//looping through All Products
for (int i = 0; i < json_users.length(); i++) {
JSONObject c = json_users.getJSONObject(i);
String t1 = c.getString("id");
String t2 = c.getString("work_title");
String t3 = c.getString("image_path");
WorkModel da=new WorkModel(t1,t2,t3);
data.add(da);
}
return "abc";
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
pDialog.dismiss();
if(s.equals("abc"))
{
adapter = new WorkAdapter(con, data);
lst.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
else
{
}
}
}
}
<h1>Adapter fill listview</h1>
public class WorkAdapter extends BaseAdapter {
private LayoutInflater inflater1=null;
private static String string=null;
ArrayList<WorkModel> data=null;
Context activity;
DisplayImageOptions options;
protected ImageLoader imageLoader = ImageLoader.getInstance();
public WorkAdapter(Context act,ArrayList<WorkModel> da)
{
activity=act;
data=da;
}
@Override
public int getCount() {
return data.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View vi=convertView;
if(convertView==null)
{
inflater1=(LayoutInflater)parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
vi=inflater1.inflate(R.layout.list_work,null);
}
TextView name;
ImageView img;
name=(TextView)vi.findViewById(R.id.list_work_name);
img= (ImageView)vi.findViewById(R.id.list_work_img);
WorkModel da=new WorkModel(string,string,string);
da=data.get(position);
final String p1,p2,p3;
p1=da.getId();
p2=da.getName();
p3=da.getImagename();
name.setText(p2);
imageLoader.init(ImageLoaderConfiguration.createDefault(activity));
final String imgpath=""+p3;
options = new DisplayImageOptions.Builder()
.showImageOnLoading(R.drawable.wp_loading)
.showImageForEmptyUri(R.drawable.wp_loading)
.showImageOnFail(R.drawable.wp_loading)
.cacheInMemory(true)
.cacheOnDisk(true)
.build();
imageLoader.displayImage(imgpath, img,options);
img.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DisplayImageOptions options;
final ImageLoader imageLoader = ImageLoader.getInstance();
final Dialog emailDialog =new Dialog(activity, android.R.style.Theme_DeviceDefault);
emailDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
emailDialog.setCancelable(true);
emailDialog.setContentView(R.layout.zoom_imge);
ImageView image = (ImageView) emailDialog.findViewById(R.id.zoom_image_img);
emailDialog.show();
final String imgpath=""+p3;
options = new DisplayImageOptions.Builder()
.showImageOnLoading(R.drawable.wp_loading)
.showImageForEmptyUri(R.drawable.wp_loading)
.showImageOnFail(R.drawable.wp_loading)
.cacheInMemory(true)
.cacheOnDisk(true)
.build();
imageLoader.displayImage(imgpath, image, options);
}
});
return vi;
}
}

OriginalL'auteur hardip

Obtenir l'annexe

public class GetSchedule extends Activity {
//JSON Node Names
private static final String TAG_SNO = "sno";
private static final String TAG_STNCODE = "stnCode";
private static final String TAG_STATION = "station";
//private static final String TAG_ROUTENO= "routeNo";
private static final String TAG_ARRIVALTIME = "arrivalTime";
private static final String TAG_DEPTIME = "depTime";
private JSONArray station = null;
private ListView list;
//private static String url = "http://railpnrapi.com/api/route/train/";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_get_schedule);
try {
ArrayList<HashMap<String, String>> stnNamelist = new    ArrayList<HashMap<String, String>>();
//Getting JSON Array
//JSONObject job = new JSONObject();
//JSONArray jArray = ModuleClass.trainScheduleJSONObject.getJSONArray("stnName");
JSONObject json_data = null;
station= ModuleClass.trainScheduleJSONObject.getJSONArray(TAG_STATION);
for (int i = 0; i < station.length(); i++) {
json_data = station.getJSONObject(i);
//JSONObject c = stnName.getJSONObject(0);
//Storing  JSON item in a Variable
String sno = json_data.getString(TAG_SNO);
String stnCode = json_data.getString(TAG_STNCODE);
//String distance= c.getString(TAG_DISTANCE);
//String routeNo = c.getString(TAG_ROUTENO);
String arrivalTime = json_data.getString(TAG_ARRIVALTIME);
String depTime = json_data.getString(TAG_DEPTIME);
//String haltTime = c.getString(TAG_HALTTIME);
//String tday= c.getString(TAG_TDAY);
//String remark = c.getString(TAG_REMARK);
//Adding value HashMap key => value
stnNamelist = new ArrayList<HashMap<String, String>>();
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_SNO, sno);
map.put(TAG_STNCODE, stnCode);
map.put(TAG_DEPTIME, depTime);
map.put(TAG_ARRIVALTIME, arrivalTime);
//map.put(TAG_DEPTIME,depTime );
stnNamelist.add(map);
list = (ListView) findViewById(R.id.listView1);
final SimpleAdapter sd;
sd = new SimpleAdapter(this, stnNamelist, R.layout.activity_get_schedule, 
new String[] { TAG_SNO, TAG_STNCODE, TAG_ARRIVALTIME, TAG_DEPTIME },
new int[] { R.id.textView1, R.id.textView2, R.id.textView3, R.id.textView4});
list.setAdapter(sd);
/*
* list.setOnItemClickListener(new
* AdapterView.OnItemClickListener() {
* 
* @Override public void onItemClick(AdapterView<?> parent, View
* view, int position, long id) { Toast.makeText(
* MainActivity.this, "You Clicked at " +
* stnNamelist.get(+position).get( "name"), Toast.LENGTH_SHORT)
* .show(); } });
*/
}
//Set JSON Data in TextView
//uid.setText(id);
//name1.setText(name);
//email1.setText(email);
} catch (JSONException e) {
e.printStackTrace();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.get_schedule, menu);
return true;
}
}

OriginalL'auteur Chande Siddhi

ListView de JSON données extraites à l'aide Retrofit2 service

Réponse JSON

{
"results": [
{
"phone": "+9178XXXX66",
"name": "Olivia"
},
{
"phone": "+9178XXXX66",
"name": "Isla"
},
{
"phone": "+9178XXXX66",
"name": "Emily"
},
{
"phone": "+9178XXXX66",
"name": "Amelia"
},
{
"phone": "+9178XXXX66",
"name": "Sophia"
}],
"statusCode": "1",
"count": "2"
}

comment afficher extraites des données json dans listview à l'aide de baseadapter

Dans MainActivity.java nous allons passer à des données JSON ArrayList(dummyData)

    customListAdapter = new CustomListAdapter(getApplicationContext(), dummyData);
listView = (ListView) findViewById(R.id.listShowJSONData);
listView.setAdapter(customListAdapter);

Dans la coutume BaseAdapter notre

...
...
@Override
public MyModel getItem(int i) {
return this.users.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(final int i, View view, ViewGroup viewGroup) {
if(view==null)
{
view= LayoutInflater.from(c).inflate(R.layout.json_data_list,viewGroup,false);
}
TextView mUserDetails = (TextView) view.findViewById(R.id.userDetails);
TextView mUserStatus = (TextView) view.findViewById(R.id.userStatus);
Object getrow = this.users.get(i);
LinkedTreeMap<Object,Object> rowmap = (LinkedTreeMap) getrow;
String name = rowmap.get("name").toString();
String phone = rowmap.get("phone").toString();
mUserDetails.setText(name);
mUserStatus.setText(phone);
return view;
}
...
...

Ici Monmodèle sera utilisé comme un mappage personnalisé modèle de réponse de service

Voir lien pour une complète explication du code

OriginalL'auteur Code Spy

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