ListView item onClick can't show wanted result

ListView item onClick can't show wanted result - java

This is the listview. It only shows 3 type of info(i.e. job post name, location, salary) in each item :
Job post name 1
Location 1
Salary 1
For example, the above 3 info is item 1 in the listview. If I click item 1, it is supposed to show the above 3 info plus 3 more info , i.e. Job Responsibility, Company , Contact :
Job post name 1
Location 1
Salary 1
Job Responsibility 1
Company 1
Contact 1
However, it fails. It only shows the first 3 info only, without Job Responsibility, Company and Contact. Could anyone help ? Thank you
MainActivity.java
public class MainActivity extends ListActivity {
private ProgressDialog pDialog;
// URL to get contacts JSON
private static String url = "http://192.168.0.102/get_json_select_all.php";
// JSON Node names
private static final String TAG_INFO = "info";
private static final String TAG_POSTNAME = "PostName";
private static final String TAG_LOCATION = "Location";
private static final String TAG_SALARY = "Salary";
private static final String TAG_RESPONSIBILITY = "Responsibility";
private static final String TAG_COMPANY = "Company";
private static final String TAG_CONTACT = "Contact";
// contacts JSONArray
JSONArray infos = null;
// Hashmap for ListView
ArrayList<HashMap<String, String>> infoList;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
infoList = new ArrayList<HashMap<String, String>>();
ListView lv = getListView();
// Listview on item click listener
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.PostName))
.getText().toString();
String cost = ((TextView) view.findViewById(R.id.Location))
.getText().toString();
String description = ((TextView) view.findViewById(R.id.Salary))
.getText().toString();
// Starting single contact activity
Intent in = new Intent(getApplicationContext(),
SingleContactActivity.class);
in.putExtra(TAG_POSTNAME, name);
in.putExtra(TAG_LOCATION, cost);
in.putExtra(TAG_SALARY, description);
startActivity(in);
}
});
// Calling async task to get json
new GetContacts().execute();
}
/**
* Async task class to get json by making HTTP call
* */
private class GetContacts extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
infos = jsonObj.getJSONArray(TAG_INFO);
// looping through All Contacts
for (int i = 0; i < infos.length(); i++) {
JSONObject c = infos.getJSONObject(i);
String id = c.getString(TAG_POSTNAME);
String name = c.getString(TAG_LOCATION);
String email = c.getString(TAG_SALARY);
String address = c.getString(TAG_RESPONSIBILITY);
String gender = c.getString(TAG_COMPANY);
String mobile = c.getString(TAG_CONTACT);
// tmp hashmap for single contact
HashMap<String, String> info = new HashMap<String, String>();
// adding each child node to HashMap key => value
info.put(TAG_POSTNAME, id);
info.put(TAG_LOCATION, name);
info.put(TAG_SALARY, email);
info.put(TAG_RESPONSIBILITY, address);
info.put(TAG_COMPANY, gender);
info.put(TAG_CONTACT, mobile);
// adding contact to contact list
infoList.add(info);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, infoList,
R.layout.list_item, new String[] { TAG_POSTNAME, TAG_LOCATION,
TAG_SALARY }, new int[] { R.id.PostName,
R.id.Location, R.id.Salary });
setListAdapter(adapter);
}
}
}
SingleContactActivity.java
public class SingleContactActivity extends Activity {
// JSON node keys
private static final String TAG_POSTNAME = "PostName";
private static final String TAG_LOCATION = "Location";
private static final String TAG_SALARY = "Salary";
private static final String TAG_RESPONSIBILITY = "Responsibility";
private static final String TAG_COMPANY = "Company";
private static final String TAG_CONTACT = "Contact";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_single_contact);
// getting intent data
Intent in = getIntent();
// Get JSON values from previous intent
String PostName = in.getStringExtra(TAG_POSTNAME);
String Location = in.getStringExtra(TAG_LOCATION);
String Salary = in.getStringExtra(TAG_SALARY);
String Responsibility = in.getStringExtra(TAG_RESPONSIBILITY);
String Company = in.getStringExtra(TAG_COMPANY);
String Contact = in.getStringExtra(TAG_CONTACT);
// Displaying all values on the screen
TextView lblPostName = (TextView) findViewById(R.id.PostName_label);
TextView lblLocation = (TextView) findViewById(R.id.Location_label);
TextView lblSalary = (TextView) findViewById(R.id.Salary_label);
TextView lblResponsibility = (TextView) findViewById(R.id.Responsibility_label);
TextView lblCompany = (TextView) findViewById(R.id.Company_label);
TextView lblContact = (TextView) findViewById(R.id.Contact_label);
lblPostName.setText(PostName);
lblLocation.setText(Location);
lblSalary.setText(Salary);
lblResponsibility.setText(Responsibility);
lblCompany.setText(Company);
lblContact.setText(Contact);
}
}
ServiceHandler.java
public class ServiceHandler {
static String response = null;
public final static int GET = 1;
public final static int POST = 2;
public ServiceHandler() {
}
public String makeServiceCall(String url, int method) {
return this.makeServiceCall(url, method, null);
}
public String makeServiceCall(String url, int method,
List<NameValuePair> params) {
try {
// http client
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
// Checking http request method type
if (method == POST) {
HttpPost httpPost = new HttpPost(url);
// adding post params
if (params != null) {
httpPost.setEntity(new UrlEncodedFormEntity(params));
}
httpResponse = httpClient.execute(httpPost);
} else if (method == GET) {
// appending params to url
if (params != null) {
String paramString = URLEncodedUtils
.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
httpResponse = httpClient.execute(httpGet);
}
httpEntity = httpResponse.getEntity();
response = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
}
acticity_main.xml
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
list_item.xml
<TextView
android:id="#+id/PostName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:paddingTop="6dip"
android:textColor="#43bd00"
android:textSize="16sp"
android:textStyle="bold" />
<TextView
android:id="#+id/Location"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:textColor="#acacac" />
<TextView
android:id="#+id/Salary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:text="Salary: "
android:textColor="#5d5d5d"
android:textStyle="bold" />
activity_single_contact.xml
<TextView android:id="#+id/PostName_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="25dip"
android:textStyle="bold"
android:paddingTop="10dip"
android:paddingBottom="10dip"
android:textColor="#43bd00"/>
<TextView android:id="#+id/Location_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#acacac"/>
<TextView android:id="#+id/Salary_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textStyle="bold"/>
<TextView android:id="#+id/Responsibility_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#ff1e76ac"/>
<TextView android:id="#+id/Company_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#ff1e76ac"/>
<TextView android:id="#+id/Contact_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#ff1e76ac"/>

edit this part of code
final listView lv=getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.PostName))
.getText().toString();
String cost = ((TextView) view.findViewById(R.id.Location))
.getText().toString();
String description = ((TextView) view.findViewById(R.id.Salary))
.getText().toString();
HashMap<String, String> info = new HashMap<String, String>();
info=(HashMap<String, String>)lv.getAdapter().getItem(position);
// Starting single contact activity
Intent in = new Intent(getApplicationContext(),
SingleContactActivity.class);
in.putExtra(TAG_POSTNAME, name);
in.putExtra(TAG_LOCATION, cost);
in.putExtra(TAG_SALARY, description);
in.putExtra(RESPONSIBILITY, info.get(TAG_RESPONSIBILITY));
in.putExtra(TAG_COMPANY, info.get(TAG_COMPANY));
in.putExtra(TAG_CONTACT, info.get(TAG_CONTACT));
startActivity(in);

Related

RecyclerCardview did not show anything

I am trying to pass the data from a weather api and make it into a recyclerView and cardView, but I have no idea why my activity doesn't show anything and i don't know why is not working.
Here is my code***
DailyWeatherInfo.java
private Daily mDaily;
private RecyclerView recyclerView;
private LinearLayoutManager layoutManager;
private CustomAdapter adapter;
private List<Daily> data_list;
private double latitude;
private double longitude;
public DailyWeatherInfo() {
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_daily_weather_info);
recyclerView = findViewById(R.id.recyclerView);
data_list = new ArrayList<>();
load_weather_info(37.8267,-122.4233);
layoutManager = new LinearLayoutManager(this);
adapter = new CustomAdapter(this,data_list);
adapter.notifyDataSetChanged();
recyclerView.setAdapter(adapter);
//getForcus(37.8267,-122.4233);
}
private void load_weather_info(final double latitude, final double longitude) {
//this.latitude = latitude;
//this.longitude = longitude;
AsyncTask<Integer, Void, Void> task = new AsyncTask<Integer, Void, Void>() {
#Override
protected Void doInBackground(Integer... integers) {
String apiKey = "--------------------------------";
String forecastUrl = "https://api.darksky.net/forecast/" + apiKey +
"/" + latitude + "," + longitude;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(forecastUrl)
.build();
try {
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
for (int i = 0; i<array.length(); i++){
JSONObject jsonObject = array.getJSONObject(i);
JSONObject daily = jsonObject.getJSONObject("daily");
JSONObject mDaily = daily.getJSONObject("data");
Daily daily1 = new Daily(mDaily.getString("summary"), mDaily.getString("icon"),
mDaily.getDouble("precipProbability"), mDaily.getLong("time"));
data_list.add(daily1);
}
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
}
};
task.execute((int) latitude, (int) longitude);
}
Daily.java
public class Daily {
private String nIcon;
private String nSummary;
private String nTimeZone;
private Long nTimeStamp;
private Double nPrecipPro;
public Daily(String nSummary, String nIcon, double nPrecipPro, long nTimeStamp ){
this.nSummary = nSummary;
this.nIcon = nIcon;
this.nPrecipPro = nPrecipPro;
this.nTimeStamp = nTimeStamp;
}
public String getnTimeZone() {
return nTimeZone;
}
public void setnTimeZone(String nTimeZone) {
this.nTimeZone = nTimeZone;
}
public String getnIcon() {
return nIcon;
}
public int getIconId(){
//clear-day, clear-night, rain, snow, sleet, wind, fog, cloudy, partly-cloudy-day, or partly-cloudy-night
int iconId = R.drawable.clear_day;
if (nIcon.equals("clear-day")){
iconId = R.drawable.clear_day;
}else if (nIcon.equals("clear-night")) {
iconId = R.drawable.clear_night;
}
else if (nIcon.equals("rain")) {
iconId = R.drawable.rain;
}
else if (nIcon.equals("snow")) {
iconId = R.drawable.snow;
}
else if (nIcon.equals("sleet")) {
iconId = R.drawable.sleet;
}
else if (nIcon.equals("wind")) {
iconId = R.drawable.wind;
}
else if (nIcon.equals("fog")) {
iconId = R.drawable.fog;
}
else if (nIcon.equals("cloudy")) {
iconId = R.drawable.cloudy;
}
else if (nIcon.equals("partly-cloudy-day")) {
iconId = R.drawable.partly_cloudy;
}
else if (nIcon.equals("partly-cloudy-night")) {
iconId = R.drawable.cloudy_night;
}
return iconId;
}
public void setnIcon(String nIcon) {
this.nIcon = nIcon;
}
public String getnSummary() {
return nSummary;
}
public void setnSummary(String nSummary) {
this.nSummary = nSummary;
}
public Long getnTimeStamp() {
return nTimeStamp;
}
public String getFormattedTime(){
SimpleDateFormat formatter = new SimpleDateFormat("h:mm a");
formatter.setTimeZone(TimeZone.getTimeZone(getnTimeZone()));
Date dateTime = new Date(getnTimeStamp()*1000);
String timeString = formatter.format(dateTime);
return timeString;
}
public void setnTimeStamp(Long nTimeStamp) {
this.nTimeStamp = nTimeStamp;
}
public Double getnPrecipPro() {
return nPrecipPro;
}
public void setnPrecipPro(Double nPrecipPro) {
this.nPrecipPro = nPrecipPro;
}
}
CustomAdapter.java
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
private Context context;
private List<Daily> myDaily;
public CustomAdapter(Context context, List<Daily> myDaily){
this.context = context;
this.myDaily = myDaily;
notifyDataSetChanged();
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_view,parent,false);
return new ViewHolder(itemView);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.cSummary.setText(myDaily.get(position).getnSummary());
holder.cPrecipProability.setText(myDaily.get(position).getnPrecipPro() + "");
holder.cDate.setText(myDaily.get(position).getFormattedTime());
holder.cImage.setImageResource(myDaily.get(position).getIconId());
}
#Override
public int getItemCount() {
return myDaily.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView cDate;
public ImageView cImage;
public TextView cSummary;
public TextView cPrecipProability;
public ViewHolder(View itemView) {
super(itemView);
cDate = itemView.findViewById(R.id.txtDate);
cSummary = itemView.findViewById(R.id.txtSummary);
cPrecipProability = itemView.findViewById(R.id.txtRainChance);
cImage = itemView.findViewById(R.id.weather_icon);
}
}
}
card_view xml
Is there anything wrong in my xml file?
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="100dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="100dp">
<ImageView
android:id="#+id/weather_icon"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_marginLeft="12dp"
android:layout_marginTop="15dp" />
<TextView
android:id="#+id/txtDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/weather_icon"
android:layout_marginLeft="18dp"
android:layout_marginStart="18dp"
android:layout_toEndOf="#+id/weather_icon"
android:layout_toRightOf="#+id/weather_icon"
android:text="2018/04/06, Friday"
android:textSize="15dp" />
<TextView
android:id="#+id/txtSummary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/txtDate"
android:layout_alignStart="#+id/txtDate"
android:layout_centerVertical="true"
android:text="Mostly cloudy throughout the day."
android:textSize="20dp" />
<TextView
android:id="#+id/txtRainChance"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/weather_icon"
android:layout_alignLeft="#+id/txtSummary"
android:layout_alignStart="#+id/txtSummary"
android:text="Rain of Chance : 65%" />
</RelativeLayout>
</android.support.v7.widget.CardView>
</LinearLayout>

You just forgot to setLayoutManager(); to your recyclerView check it
recyclerView.setLayoutManager(layoutManager);
EDIT
Network operation need some time to perform action so better to set your set your adapter after you get data from API
Try this
data_list = new ArrayList<>();
recyclerView = findViewById(R.id.recyclerView);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
adapter = new CustomAdapter(this,data_list);
recyclerView.setAdapter(adapter);
load_weather_info(37.8267,-122.4233);
Change your load_weather_info method like below code
private void load_weather_info(final double latitude, final double longitude) {
//this.latitude = latitude;
//this.longitude = longitude;
AsyncTask<Integer, Void, Void> task = new AsyncTask<Integer, Void, Void>() {
#Override
protected Void doInBackground(Integer... integers) {
String apiKey = "--------------------------------";
String forecastUrl = "https://api.darksky.net/forecast/" + apiKey +
"/" + latitude + "," + longitude;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(forecastUrl)
.build();
try {
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
for (int i = 0; i<array.length(); i++){
JSONObject jsonObject = array.getJSONObject(i);
JSONObject daily = jsonObject.getJSONObject("daily");
JSONObject mDaily = daily.getJSONObject("data");
Daily daily1 = new Daily(mDaily.getString("summary"), mDaily.getString("icon"),
mDaily.getDouble("precipProbability"), mDaily.getLong("time"));
data_list.add(daily1);
}
adapter.notifyDataSetChanged();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
}
};
task.execute((int) latitude, (int) longitude);
}

Most of the error are already pointed out. just rectify them.
data_list = new ArrayList<>();
recyclerView = findViewById(R.id.recyclerView);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
adapter = new CustomAdapter(this,data_list);
recyclerView.setAdapter(adapter);
load_weather_info(37.8267,-122.4233);
Notify adapter as follows.
private void load_weather_info(final double latitude, final double longitude) {
AsyncTask<Integer, Void, Void> task = new AsyncTask<Integer, Void, Void>() {
#Override
protected Void doInBackground(Integer... integers) {
String apiKey = "--------------------------------";
String forecastUrl = "https://api.darksky.net/forecast/" + apiKey +
"/" + latitude + "," + longitude;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(forecastUrl)
.build();
try {
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
for (int i = 0; i<array.length(); i++){
JSONObject jsonObject = array.getJSONObject(i);
JSONObject daily = jsonObject.getJSONObject("daily");
JSONObject mDaily = daily.getJSONObject("data");
Daily daily1 = new Daily(mDaily.getString("summary"), mDaily.getString("icon"),
mDaily.getDouble("precipProbability"), mDaily.getLong("time"));
data_list.add(daily1);
}
recyclerView.post(new Runnable() {
#Override
public void run() {
adapter.notifyDataSetChanged();
}
});
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
}
};
task.execute((int) latitude, (int) longitude);
}
PS: Here you should make use of onPostExecute() to get the returned data set and handle the Exception.

You have not notified the adapter on the change of data.
for (int i = 0; i<array.length(); i++){
JSONObject jsonObject = array.getJSONObject(i);
JSONObject daily = jsonObject.getJSONObject("daily");
JSONObject mDaily = daily.getJSONObject("data");
Daily daily1 = new Daily(mDaily.getString("summary"), mDaily.getString("icon"),
mDaily.getDouble("precipProbability"), mDaily.getLong("time"));
data_list.add(daily1);
}
adapter.notifyDataSetChanged(); //notify here

How to implement CustomAdapter in ListView Acitivity

I want image before textview and want to customize TextView in each row but it is hard for me to implement it because there is already xml such layout file simple_list_item_1 made inbuilt.
Please help me how can i implement it.
Here is simple_list_item coding
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2006 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textStyle="bold"
android:textAppearance="?android:attr/textAppearanceListItemSmall"
android:gravity="center_vertical"
android:paddingStart="?android:attr/listPreferredItemPaddingStart"
android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
android:minHeight="?android:attr/listPreferredItemHeightSmall"
/>
Main Activity
public class MainActivity extends ListActivity {
private ListActivity activity;
final static String ScreenName = "google";
final static String LOG_TAG = "rnc";
ListView listview;
TextView text;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.twit_list);
listview = this.getListView();
activity = this;
downloadTweets();
listview.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// selected item
String lst_txt = parent.getItemAtPosition(position).toString().trim();
// Launching new Activity on selecting single List Item
Intent i = new Intent(MainActivity.this, SingleListItem.class);
// sending data to new activity
i.putExtra("product",lst_txt );
startActivity(i);
}
});
}
// download twitter timeline after first checking to see if there is a network connection
public void downloadTweets() {
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected()) {
new DownloadTwitterTask().execute(ScreenName);
} else {
Log.v(LOG_TAG, "No network connection available.");
}
}
// Uses an AsyncTask to download a Twitter user's timeline
private class DownloadTwitterTask extends AsyncTask<String, Void, String> {
final static String CONSUMER_KEY = "keyvaluexxxxx";
final static String CONSUMER_SECRET = "secretkeyxxxxxxx";
final static String TwitterTokenURL = "https://api.twitter.com/oauth2/token";
final static String TwitterStreamURL = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=";
private ProgressDialog progressDialog;
#Override
// can use UI thread here
protected void onPreExecute() {
//this.progressDialog = ProgressDialog.show(Boys.this, ""," Look whose back !! Ok Let me see what i have for you ");
try{
progressDialog = new ProgressDialog(MainActivity.this,AlertDialog.THEME_HOLO_DARK);
progressDialog.setIndeterminate(true);
progressDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.loader_2));
progressDialog.setMessage("Please Wait ! Unwrapping Something for You...");
progressDialog.show();
progressDialog.setCancelable(false);
progressDialog.setCanceledOnTouchOutside(false);
}
catch(Exception e)
{
this.progressDialog.dismiss();
Toast.makeText(getApplicationContext(),e.toString(), Toast.LENGTH_LONG).show();
}
}
#Override
protected String doInBackground(String... screenNames) {
String result = null;
if (screenNames.length > 0) {
result = getTwitterStream(screenNames[0]);
}
return result;
}
// onPostExecute convert the JSON results into a Twitter object (which is an Array list of tweets
#Override
protected void onPostExecute(String result) {
Twitter twits = jsonToTwitter(result);
// lets write the results to the console as well
for (Tweet tweet : twits) {
Log.i(LOG_TAG, tweet.getText());
}
// send the tweets to the adapter for rendering
ArrayAdapter<Tweet> adapter = new ArrayAdapter<Tweet>(activity, android.R.layout.simple_list_item_1, twits);
setListAdapter(adapter);
this.progressDialog.dismiss();
}
// converts a string of JSON data into a Twitter object
private Twitter jsonToTwitter(String result) {
Twitter twits = null;
if (result != null && result.length() > 0) {
try {
Gson gson = new Gson();
twits = gson.fromJson(result, Twitter.class);
} catch (IllegalStateException ex) {
// just eat the exception
}
}
return twits;
}
// convert a JSON authentication object into an Authenticated object
private Authenticated jsonToAuthenticated(String rawAuthorization) {
Authenticated auth = null;
if (rawAuthorization != null && rawAuthorization.length() > 0) {
try {
Gson gson = new Gson();
auth = gson.fromJson(rawAuthorization, Authenticated.class);
} catch (IllegalStateException ex) {
// just eat the exception
}
}
return auth;
}
private String getResponseBody(HttpRequestBase request) {
StringBuilder sb = new StringBuilder();
try {
DefaultHttpClient httpClient = new DefaultHttpClient(new BasicHttpParams());
HttpResponse response = httpClient.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
String reason = response.getStatusLine().getReasonPhrase();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
InputStream inputStream = entity.getContent();
BufferedReader bReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
String line = null;
while ((line = bReader.readLine()) != null) {
sb.append(line);
}
} else {
sb.append(reason);
}
} catch (UnsupportedEncodingException ex) {
} catch (ClientProtocolException ex1) {
} catch (IOException ex2) {
}
return sb.toString();
}
private String getTwitterStream(String screenName) {
String results = null;
// Step 1: Encode consumer key and secret
try {
// URL encode the consumer key and secret
String urlApiKey = URLEncoder.encode(CONSUMER_KEY, "UTF-8");
String urlApiSecret = URLEncoder.encode(CONSUMER_SECRET, "UTF-8");
// Concatenate the encoded consumer key, a colon character, and the
// encoded consumer secret
String combined = urlApiKey + ":" + urlApiSecret;
// Base64 encode the string
String base64Encoded = Base64.encodeToString(combined.getBytes(), Base64.NO_WRAP);
// Step 2: Obtain a bearer token
HttpPost httpPost = new HttpPost(TwitterTokenURL);
httpPost.setHeader("Authorization", "Basic " + base64Encoded);
httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
httpPost.setEntity(new StringEntity("grant_type=client_credentials"));
String rawAuthorization = getResponseBody(httpPost);
Authenticated auth = jsonToAuthenticated(rawAuthorization);
// Applications should verify that the value associated with the
// token_type key of the returned object is bearer
if (auth != null && auth.token_type.equals("bearer")) {
// Step 3: Authenticate API requests with bearer token
HttpGet httpGet = new HttpGet(TwitterStreamURL + screenName);
// construct a normal HTTPS request and include an Authorization
// header with the value of Bearer <>
httpGet.setHeader("Authorization", "Bearer " + auth.access_token);
httpGet.setHeader("Content-Type", "application/json");
// update the results with the body of the response
results = getResponseBody(httpGet);
}
} catch (UnsupportedEncodingException ex) {
} catch (IllegalStateException ex1) {
}
return results;
}
}
}
Here twit_list.xml attached with MainActivity.java
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/bis"
>
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>

Create a custom_item inside layout folder
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<ImageView
android:id="#+id/listItemImgView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/done"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/listItemTxtView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
Create a custom adapter like this
public class CustomAdapter extends ArrayAdapter<Tweet> {
private Context mContext;
private int layoutId;
private ArrayList<Tweet> dataList;
public CustomAdapter(Context context, int resourceId,
ArrayList<Tweet> objects) {
super(context, resourceId, objects);
// TODO Auto-generated constructor stub
mContext = context;
layoutId = resourceId;
dataList = objects;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder viewHolder;
if(convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(layoutId, null);
viewHolder = new ViewHolder();
viewHolder.listItemTxtView = (TextView) convertView.findViewById(R.id.listItemTxtView);
viewHolder.listItemImgView = (ImageView) convertView.findViewById(R.id.listItemImgView);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.listItemTxtView.setText(dataList.get(position).toString());
//place picasso jar into libs folder of your project and use it for download and set images like this
Picasso.with(context).load("url of image you want to load").into(viewHolder.listItemImgView);
return convertView;
}
private class ViewHolder {
TextView listItemTxtView;
ImageView listItemImgView;
}
}
download picasso jar from here
instead of this
ArrayAdapter<Tweet> adapter = new ArrayAdapter<Tweet>(activity, android.R.layout.simple_list_item_1, twits);
setListAdapter(adapter);
Use this
CustomAdapter adapter = new CustomAdapter(MainActivity.this, R.layout.custom_item, twits);
setListAdapter(adapter);

Showing data from Arraylist of Hashmap

I'm getting json data and putting it in hashmap and hashmap into an arraylist. All is happening in fragment extending ListFragment
protected String doInBackground(String... urls) {
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("full_name", etUserSearch.getText().toString());
responseReceive = JsonPostClient.SendHttpPost(urls[0],
jsonObject);
} catch (JSONException e) {
e.printStackTrace();
}
try {
Success = responseReceive.getJSONArray("Success");
for (int i = 0; i < Success.length(); i++) {
JSONObject c = Success.getJSONObject(i);
String full_name = c.getString(TAG_FULL_NAME);
String user_name = c.getString(TAG_USER_NAME);
String user_id = c.getString(TAG_USER_ID);
HashMap<String, String> friends = new HashMap<String, String>();
// adding each child node to HashMap key => value
friends.put(TAG_FULL_NAME, full_name);
friends.put(TAG_USER_NAME, user_name);
friends.put(TAG_USER_ID, user_id);
// adding contact to contact list
FriendSearchList.add(friends);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
Log.d("hello", "");
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (pDialog.isShowing())
pDialog.dismiss();
printFriends();
};
I'm checking that data is valid by printFriends() method and wanna show only 'TAG_FULL_NAME' data in a listview. My ListView initialization
View rootView = inflater.inflate(R.layout.tab_add_friends, container,
false);
lv = (ListView) rootView.findViewById(R.id.listView);
Method for checking data and loading in ListView
public void printFriends() {
int len = FriendSearchList.size();
for (int i = 0; i < len; i++) {
String f_name = FriendSearchList.get(i).get(TAG_FULL_NAME);
String u_name = FriendSearchList.get(i).get(TAG_USER_NAME);
String u_id = FriendSearchList.get(i).get(TAG_USER_ID);
Log.d("full_name", f_name);
Log.d("user_name", u_name);
Log.d("user_id", u_id);
}
ListAdapter adapter = new SimpleAdapter(getActivity(),
FriendSearchList, R.layout.tab_addfriend_list,
new String[] { TAG_FULL_NAME }, new int[] { R.id.full_name });
setListAdapter(adapter);
}
tab_add_friends xml layout
<?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="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
tab_addfriend_list xml layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp"
android:paddingLeft="10dp"
android:paddingRight="10dp" >
<!-- Name Label -->
<TextView
android:id="#+id/full_name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:paddingTop="6dip"
android:textColor="#43bd00"
android:textSize="16sp"
android:textStyle="bold" />
</LinearLayout>
There is no error showing just nothing is showing into listview. Need suggestion or clue to get rid of this problem.

I have the same problem once
the problem is you are feeding the data using simple adapter but you may be inflate the rowView outside the ui thread and feed the from the post execute . thtas why your view dont getting the data . actually you dont have to inflate the rowview here is the hole code for you .Another thing print friend method also useless just initialize the simple adapter in the onPostExecute() method.
`public class MainActivity extends ListActivity {
private ProgressDialog pDialog;
// URL to get contacts JSON
private static String url = "http://api.androidhive.info/contacts/";
// JSON Node names
private static final String TAG_CONTACTS = "contacts";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";
private static final String TAG_ADDRESS = "address";
private static final String TAG_GENDER = "gender";
private static final String TAG_PHONE = "phone";
private static final String TAG_PHONE_MOBILE = "mobile";
private static final String TAG_PHONE_HOME = "home";
private static final String TAG_PHONE_OFFICE = "office";
private boolean isConnection = false;
// contacts JSONArray
JSONArray contacts = null;
// Hashmap for ListView
ArrayList<HashMap<String, String>> contactList;
ArrayList<HashMap<String, String>> oflineContactList;
private MyContactDataSource dataSource;
List<Contatcs> oflineContatcs;
// private ListAdapter adapter1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dataSource = new MyContactDataSource(MainActivity.this);
dataSource.open();
contactList = new ArrayList<HashMap<String,String>>();
oflineContactList = dataSource.getContatcs();
Log.i("data", oflineContactList.toString());
ListView lv = getListView();
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, oflineContactList,
R.layout.list_item, new String[] { TAG_NAME, TAG_EMAIL,
TAG_PHONE_MOBILE }, new int[] { R.id.email,
R.id.name, R.id.mobile });
setListAdapter(adapter);
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// getting values from selected ListItem
String name = ((TextView) arg1.findViewById(R.id.name))
.getText().toString();
String cost = ((TextView) arg1.findViewById(R.id.email))
.getText().toString();
String description = ((TextView) arg1.findViewById(R.id.mobile))
.getText().toString();
// Starting single contact activity
Intent intent = new Intent(MainActivity.this, SingleListItemActivity.class);
intent.putExtra(TAG_NAME, name);
intent.putExtra(TAG_EMAIL, cost);
intent.putExtra(TAG_PHONE_MOBILE, description);
startActivity(intent);
}
});
new GetContacts().execute();
}
private class GetContacts extends AsyncTask<Void, Void, Void>{
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Data is loading...please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... params) {
// Creating service handler class instance
ServiceHandler mHandler = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = mHandler.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if(jsonStr != null){
try {
JSONObject jsonObject = new JSONObject(jsonStr);
//Getting JSON Array node
contacts = jsonObject.getJSONArray(TAG_CONTACTS);
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
String id = c.getString(TAG_ID);
String name = c.getString(TAG_NAME);
String email = c.getString(TAG_EMAIL);
String address = c.getString(TAG_ADDRESS);
String gender = c.getString(TAG_GENDER);
// Phone node is JSON Object
JSONObject phone = c.getJSONObject(TAG_PHONE);
String mobile = phone.getString(TAG_PHONE_MOBILE);
String home = phone.getString(TAG_PHONE_HOME);
String office = phone.getString(TAG_PHONE_OFFICE);
// tmp hashmap for single contact
HashMap<String, String> contact = new HashMap<String, String>();
// adding each child node to HashMap key => value
contact.put(TAG_ID, id);
contact.put(TAG_NAME, name);
contact.put(TAG_EMAIL, email);
contact.put(TAG_PHONE_MOBILE, mobile);
// adding contact to contact list
contactList.add(contact);
}
dataSource.creareContacts(contactList);
dataSource.close();
} catch (JSONException e) {
e.printStackTrace();
}
}
else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if(pDialog.isShowing()){
pDialog.dismiss();
}
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, contactList,
R.layout.list_item, new String[] { TAG_NAME, TAG_EMAIL,
TAG_PHONE_MOBILE }, new int[] { R.id.name,
R.id.email, R.id.mobile });
setListAdapter(adapter);
}
}
}`

The problem is that you are passing an Arraylist of HashMap where SimpleAdapter wont have any idea on which data is to put in the layout of the ListView items.
You can use this to implement items in your ListView
sample:
ListAdapter adapter = new SimpleAdapter(getActivity(),
FriendSearchList, R.layout.tab_addfriend_list,
new String[] { TAG_FULL_NAME }, new int[] { R.id.full_name }){
#Override
public int getCount() {
return FriendSearchList.size();
}
#Override
public View getView(int position,View convertView,ViewGroup parent) {
View v;
if(convertView == null)
{
v = getActivity().getLayoutInflater().inflate(R.layout.tab_addfriend_list, parent);
TextView tx = (TextView) v.findViewById(R.id.full_name);
tx.setText(FriendSearchList.get(i).get(TAG_FULL_NAME));
} else
v = convertView;
return v;
}
};

Use JSON file to populate a listview

I have the following code which retrieves the JSON file:
public class GetJSON extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) { //Running in background
try {
httpclient = new DefaultHttpClient(new BasicHttpParams());
HttpPost httppost = new HttpPost("http://pagesbyz.com/test.json");
// Depends on your web service
httppost.setHeader("Content-type", "application/json");
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
inputStream = entity.getContent();
// json is UTF-8 by default
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
Log.i("TEST", e.toString());
// Oops
}
finally {
try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
}
return null;
}
#Override
protected void onPreExecute() { //Activity is on progress
}
#Override
protected void onPostExecute(Void v) { //Activity is done...
Toast.makeText(getActivity(), result, 2000).show();
int k = 0;
try {
JSONArray jsonall = new JSONArray();
jsonArray = new JSONArray(result);
for(int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObj = (JSONObject)jsonArray.get(i); // get the json object
if(jsonObj.getString("type").equals("image") || jsonObj.getString("type").equals("text")) { // compare for the key-value
k++;
jsonall.put(jsonObj);
sId = new String[jsonall.length()];
sType = new String[jsonall.length()];
sData = new String[jsonall.length()];
for (int m = 0 ; m < jsonall.length(); m++){ //4 entries made
JSONObject c = jsonall.getJSONObject(m);
String id = c.getString("id");
String type = c.getString("type");
String data = c.getString("data");
sId[m] = id;
sType[m] = type;
sData[m] = data;
}
}
}
Toast.makeText(getActivity(), String.valueOf(k), 2000).show();
} catch (JSONException e) {
e.printStackTrace();
}
}
}
On the onPostExecute() function I am able to de-serialize the data, in this case by TYPE.
I have the following code for the CustomAdapter
public class SetRowsCustomAdapter extends ArrayAdapter<SetRows> {
Context context;
int layoutResourceId;
ArrayList<SetRows> data=new ArrayList<SetRows>();
public SetRowsCustomAdapter(Context context, int layoutResourceId, ArrayList<SetRows> 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;
ImageHolder holder = null;
if(row == null)
{
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new ImageHolder();
holder.tID = (TextView)row.findViewById(R.id.tvID);
holder.tType = (TextView)row.findViewById(R.id.tvType);
holder.tData = (TextView)row.findViewById(R.id.tvData);
row.setTag(holder);
}
else
{
holder = (ImageHolder)row.getTag();
}
SetRows myImage = data.get(position);
holder.tID.setText(myImage.id);
holder.tType.setText(myImage.type);
holder.tData.setText(myImage.data);
return row;
}
static class ImageHolder
{
TextView tID;
TextView tType;
TextView tData;
}
}
My SetRows code is:
public class SetRows {
String id;
String type;
String data;
public String getData () {
return data;
}
public void setData (String data) {
this.data = data;
}
public String getID () {
return id;
}
public void setID (String id) {
this.id = id;
}
public String getType () {
return type;
}
public void setType (String type) {
this.type = type;
}
public SetRows(String id, String type, String data) {
super();
this.id = "ID: \t" + id;
this.type = "TYPE: \t" + type;
this.data = "DATA: \t" + data;
}
}
My XML file for the Layout file is:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<ListView android:id="#+id/lvAll"
android:layout_height="match_parent"
android:layout_width="match_parent" />
</RelativeLayout>
The custom layout for the ListView is:
<?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="wrap_content"
android:orientation="horizontal"
android:padding="#dimen/list_row_pad"
android:background="#drawable/list_row_bg" >
<TextView
android:id="#+id/tvID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="#dimen/margin_left_tv"
android:text="ID: "
android:textStyle="bold"
android:textColor="#FFFFFF" />
<TextView
android:id="#+id/tvType"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/tvID"
android:layout_alignLeft="#+id/tvID"
android:text="TYPE: "
android:textStyle="bold"
android:textColor="#FFFFFF" />
<TextView
android:id="#+id/tvData"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/tvType"
android:layout_alignLeft="#+id/tvType"
android:text="DATA: "
android:textStyle="bold"
android:textColor="#FFFFFF" />
</RelativeLayout>
I want to display the data like this in a ListView from the JSON file from my server:
I think I have all the information needed. I just need to know, now, how to display the information. All help is greatly appreciated. Thanks!
UPDATE: The following code is working, but it's entering multiple entries for each:
public class GetJSON extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) { //Running in background
try {
httpclient = new DefaultHttpClient(new BasicHttpParams());
HttpPost httppost = new HttpPost("http://pagesbyz.com/test.json");
// Depends on your web service
httppost.setHeader("Content-type", "application/json");
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
inputStream = entity.getContent();
// json is UTF-8 by default
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
Log.i("TEST", e.toString());
// Oops
}
finally {
try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
}
return null;
}
#Override
protected void onPreExecute() { //Activity is on progress
}
#Override
protected void onPostExecute(Void v) { //Activity is done...
//Toast.makeText(getActivity(), result, 2000).show();
int k = 0;
try {
JSONArray jsonall = new JSONArray();
jsonArray = new JSONArray(result);
for(int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObj = (JSONObject)jsonArray.get(i); // get the json object
if(jsonObj.getString("type").equals("image") || jsonObj.getString("type").equals("text")) { // compare for the key-value
k++;
jsonall.put(jsonObj);
sId = new String[jsonall.length()];
sType = new String[jsonall.length()];
sData = new String[jsonall.length()];
for (int m = 0 ; m < jsonall.length(); m++){
JSONObject c = jsonall.getJSONObject(m);
String id = c.getString("id");
String type = c.getString("type");
String data = c.getString("data");
//sId[m] = id;
//sType[m] = type;
//sData[m] = data;
contents.add(new SetRows(id, type, data));
}
}
adapter = new SetRowsCustomAdapter(getActivity(), R.layout.listrow, contents);
lAll.setAdapter(adapter);
lAll.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Intent myIntent = new Intent(getActivity(), DisplayWeb.class);
startActivityForResult(myIntent, 0);
}
});
}
//Toast.makeText(getActivity(), String.valueOf(k), 2000).show();
} catch (JSONException e) {
e.printStackTrace();
}
}
}
The duplicate shows up as like this:

Sublacss ListActivy and create a layout that contains a ListView with id #android:id/list
put inside this subclass you AsyncTask and execute it in the on create.
when onPostExecute is called, after you parse the JSON, create an instance of SetRowsCustomAdapter
call getListView().setAdapter(adapterInstance).
#Override
protected void onPostExecute(Void v) {
ArrayList<SetRows> contents = new ArrayList<SetRows>();
// other code
//instead of those
//sId[m] = id;
//sType[m] = type;
//sData[m] = data;
//add
contents.add(new SetRows(id, type, data));
}
Edit 2: You have two duplicates entry because you have an unuseful for loop (the innere one). Imo your code should look like:
for(int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObj = (JSONObject)jsonArray.get(i);
if(jsonObj.getString("type").equals("image") || jsonObj.getString("type").equals("text")) {
String id = jsonObj.getString("id");
String type = jsonObj.getString("type");
String data = jsonObj.getString("data");
contents.add(new SetRows(id, type, data));
}
}
// the other stuff
ps. check for typo

json array shows in logacat with no errors but does not show in android view

A large part of my app is grabbing data from a website. The data shows in my logcat, green with no errors but will not display in my android view. Ive tried and searched for a week or and have had no luck.
here is my class.
public class Json extends ListActivity {
ArrayList<HashMap<String, String>> jsonParser = new ArrayList<HashMap<String, String>>();
ListView lv ;
private static final String jsonFilePath = "http://xda.olinksoftware.com/leaderboard/all";
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.json);
new ProgressTask(Json.this).execute();
}
private class ProgressTask extends AsyncTask<String, Void, Boolean> {
private ProgressDialog dialog;
public ProgressTask(Json json) {
Log.i("1", "Called");
context = json;
dialog = new ProgressDialog(context);
}
private Context context;
protected void onPreExecute() {
this.dialog.setMessage("Progress start");
this.dialog.show();
}
#Override
protected void onPostExecute(final Boolean success) {
if (dialog.isShowing()) {
dialog.dismiss();
}
ListAdapter adapter = new SimpleAdapter(context, jsonParser,
R.layout.listitem, new String[] { TAG_NAME, TAG_SCORE,
}, new int[] {
R.id.score, R.id.name,
});
setListAdapter(adapter);
// selecting single ListView item
lv = getListView();
}
#Override
protected Boolean doInBackground(final String... args) {
new JSONParser();
try {
BufferedReader reader = null;
String jsonString = "";
StringBuffer buffer = new StringBuffer();
try{
URL url = new URL(jsonFilePath);
reader = new BufferedReader(new InputStreamReader(url.openStream()));
int read;
char[] chars = new char[1024];
while ((read = reader.read(chars)) != -1)
buffer.append(chars, 0, read);
}finally {
if (reader != null)
reader.close();
}
jsonString = buffer.toString();
try{
JSONParser jsonParser = new JSONParser();
JSONArray leaderboard = (JSONArray)jsonParser.parse(jsonString);
for(int i = 0;i<leaderboard.size();i++){
JSONObject user = (JSONObject)leaderboard.get(i);
System.out.println((i+1) + ". " + user.get("forumName") + " (" + user.get("score") + ")");
}
}catch(ParseException pe){
System.out.println("position: " + pe.getPosition());
System.out.println(pe);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}}
}
and here are my xml.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<!-- Main ListView
Always give id value as list(#android:id/list)
-->
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!-- Product id (pid) - will be HIDDEN - used to pass to other activity -->
<TextView
android:id="#+id/name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone" />
<!-- Name Label -->
<TextView
android:id="#+id/score"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="6dp"
android:paddingLeft="6dp"
android:textSize="17sp"
android:textStyle="bold"/>
</LinearLayout>
any help is greatly appreciated. I know I am doing something wrong with my listview as it also works as a straight java application run in eclipse.
here is the data i am grabbing, i am only taking two values at this time. "forumUser" and "score"
[{"userId":"3579348","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=3579348","forumName":"newtoroot","totalPosts":"5074","postsPerDay":"5.14","totalThanks":"18302","joinDate":"2011-01-29","yearsJoined":"2","referrals":"4","friendCount":"38","recognizedDeveloper":"1","recognizedContributor":"0","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"48","kernelCount":"0","tutorialCount":"0","modCount":"1","themeCount":"0","score":"302","userName":"","password":""},{"userId":"1596076","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=1596076","forumName":"il Duce","totalPosts":"16335","postsPerDay":"9.75","totalThanks":"15799","joinDate":"2009-02-25","yearsJoined":"4","referrals":"2","friendCount":"83","recognizedDeveloper":"1","recognizedContributor":"0","recognizedThemer":"0","moderator":"1","recognizedEliteDeveloper":"0","romCount":"1","kernelCount":"1","tutorialCount":"0","modCount":"0","themeCount":"0","score":"132","userName":"","password":""},{"userId":"2930301","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=2930301","forumName":"fernando sor","totalPosts":"8967","postsPerDay":"7.93","totalThanks":"4549","joinDate":"2010-09-07","yearsJoined":"3","referrals":"2","friendCount":"29","recognizedDeveloper":"0","recognizedContributor":"0","recognizedThemer":"1","moderator":"0","recognizedEliteDeveloper":"0","romCount":"1","kernelCount":"0","tutorialCount":"5","modCount":"2","themeCount":"15","score":"120","userName":"fernando sor","password":""},{"userId":"3220669","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=3220669","forumName":"1975jamie","totalPosts":"582","postsPerDay":"0.56","totalThanks":"127","joinDate":"2010-11-23","yearsJoined":"2","referrals":"0","friendCount":"0","recognizedDeveloper":"1","recognizedContributor":"0","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"4","kernelCount":"0","tutorialCount":"0","modCount":"0","themeCount":"0","score":"46","userName":"1975jamie","password":""},{"userId":"2552854","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=2552854","forumName":"jeffsanace","totalPosts":"2797","postsPerDay":"2.25","totalThanks":"2836","joinDate":"2010-05-05","yearsJoined":"3","referrals":"0","friendCount":"12","recognizedDeveloper":"0","recognizedContributor":"1","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"0","kernelCount":"0","tutorialCount":"0","modCount":"0","themeCount":"0","score":"37","userName":"","password":""},{"userId":"2067958","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=2067958","forumName":"eg1122","totalPosts":"1200","postsPerDay":"0.82","totalThanks":"1695","joinDate":"2009-10-05","yearsJoined":"3","referrals":"0","friendCount":"6","recognizedDeveloper":"0","recognizedContributor":"0","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"0","kernelCount":"0","tutorialCount":"0","modCount":"2","themeCount":"0","score":"20","userName":"","password":""},{"userId":"3042344","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=3042344","forumName":"dfuse06","totalPosts":"3331","postsPerDay":"3.08","totalThanks":"2270","joinDate":"2010-10-11","yearsJoined":"2","referrals":"1","friendCount":"29","recognizedDeveloper":"0","recognizedContributor":"0","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"0","kernelCount":"0","tutorialCount":"0","modCount":"1","themeCount":"0","score":"17","userName":"","password":""},{"userId":"1070340","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=1070340","forumName":"chrisloveskaos","totalPosts":"215","postsPerDay":"0.11","totalThanks":"8","joinDate":"2008-07-08","yearsJoined":"5","referrals":"0","friendCount":"7","recognizedDeveloper":"0","recognizedContributor":"0","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"1","kernelCount":"0","tutorialCount":"0","modCount":"0","themeCount":"0","score":"14","userName":"","password":""},{"userId":"2688514","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=2688514","forumName":"GooTz66","totalPosts":"999","postsPerDay":"0.84","totalThanks":"70","joinDate":"2010-06-25","yearsJoined":"3","referrals":"0","friendCount":"7","recognizedDeveloper":"0","recognizedContributor":"0","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"0","kernelCount":"0","tutorialCount":"0","modCount":"0","themeCount":"0","score":"7","userName":"","password":""},{"userId":"2141845","userURL":"http:\/\/forum.xda-developers.com\/member.php?u=2141845","forumName":"Kush.Kush\u00c2\u0099","totalPosts":"86","postsPerDay":"0.06","totalThanks":"0","joinDate":"2009-11-09","yearsJoined":"3","referrals":"0","friendCount":"16","recognizedDeveloper":"0","recognizedContributor":"0","recognizedThemer":"0","moderator":"0","recognizedEliteDeveloper":"0","romCount":"0","kernelCount":"0","tutorialCount":"0","modCount":"0","themeCount":"0","score":"6","userName":"","password":""}]

Why is this line
setListAdapter(adapter);
Before this
// selecting single ListView item
lv = getListView();
Also, the LogCat you posted is showing the results using the "info" filter only. Try looking at the verbose view to make sure no exceptions that you're missing.

what i did to solve this was pretty much start over. i added a JSONParser class
public class JSONParser {
static InputStream is = null;
static JSONArray jarray = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONArray getJSONFromUrl(String url) {
StringBuilder builder = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try {
HttpResponse response = client.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
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 (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// try parse the string to a JSON object
try {
jarray = new JSONArray( builder.toString());
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jarray;
and a JsonActivity
public class MainActivity extends ListActivity {
private static String url = "website";
private static final String TAG_VTYPE = "forumName";
private static final String TAG_VCOLOR = "score";
private static final String TAG_THANKS = "totalThanks";
private static final String TAG_POSTS = "totalPosts";
private static final String TAG_JOIN_DATE = "joinDate";
private static final String TAG_ROM_COUNT = "romCount";
private static final String TAG_THEME_COUNT = "themeCount";
private static final String TAG_MOD_COUNT = "modCount";
private static final String TAG_KERNEL_COUNT = "kernelCount";
private static final String TAG_TUTORIAL_COUNT = "tutorialCount";
private static final String TAG_DEV = "recognizedDeveloper";
private static final String TAG_THEMER = "recognizedThemer";
private static final String TAG_MODERATOR = "moderator";
private static final String TAG_RDEV = "recognizedEliteDeveloper";
private static final String TAG_RCOD = "recognizedContributor";
ArrayList<HashMap<String, String>> jsonlist = new ArrayList<HashMap<String, String>>();
private View header;
ListView lv ;
LayoutInflater Inflater;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_view);
Inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
new ProgressTask(MainActivity.this).execute();
}
private class ProgressTask extends AsyncTask<String, Void, Boolean> {
private ProgressDialog dialog;
private ListActivity activity;
// private List<Message> messages;
public ProgressTask(ListActivity activity) {
this.activity = activity;
context = activity;
dialog = new ProgressDialog(context);
}
/** progress dialog to show user that the backup is processing. */
/** application context. */
private Context context;
protected void onPreExecute() {
this.dialog.setMessage("Progress start");
this.dialog.show();
}
#Override
protected void onPostExecute(final Boolean success) {
if (dialog.isShowing()) {
dialog.dismiss();
}
View header = Inflater.inflate(R.layout.header_view_name, null);
ListAdapter adapter = new SimpleAdapter(context, jsonlist,
R.layout.list_item, new String[] { TAG_VTYPE, TAG_VCOLOR, TAG_THANKS, TAG_POSTS, TAG_JOIN_DATE, TAG_ROM_COUNT,
TAG_THEME_COUNT, TAG_MOD_COUNT, TAG_KERNEL_COUNT, TAG_DEV, TAG_TUTORIAL_COUNT, TAG_THEMER, TAG_MODERATOR, TAG_RDEV, TAG_RCOD,
}, new int[] {
R.id.vehicleType, R.id.vehicleColor, R.id.totalThanks, R.id.totalPosts, R.id.joinDate, R.id.romCount,
R.id.themeCount, R.id.kernelCount, R.id.modCount, R.id.tutorialCount, R.id.moderator, R.id.rThemer, R.id.rDev,
R.id.rCon, R.id.rEliteDev,
});
lv = getListView();
lv.addHeaderView(header);
setListAdapter(adapter);
// selecting single ListView item
// Launching new screen on Selecting Single ListItem
lv.setOnItemClickListener(new OnItemClickListener() {
;
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// getting values from selected ListItem
String forumName = ((TextView) view.findViewById(R.id.vehicleType)).getText().toString();
String score = ((TextView) view.findViewById(R.id.vehicleColor)).getText().toString();
String totalThanks = ((TextView) view.findViewById(R.id.totalThanks)).getText().toString();
String totalPosts = ((TextView) view.findViewById(R.id.totalPosts)).getText().toString();
String joinDate = ((TextView) view.findViewById(R.id.joinDate)).getText().toString();
String romCount = ((TextView) view.findViewById(R.id.romCount)).getText().toString();
String themeCount = ((TextView) view.findViewById(R.id.themeCount)).getText().toString();
String kernelCount = ((TextView) view.findViewById(R.id.kernelCount)).getText().toString();
String modCount = ((TextView) view.findViewById(R.id.modCount)).getText().toString();
String tutorialCount = ((TextView) view.findViewById(R.id.tutorialCount)).getText().toString();
String moderator = ((TextView) view.findViewById(R.id.moderator)).getText().toString();
String recognizedThemer = ((TextView) view.findViewById(R.id.rThemer)).getText().toString();
String recognizedDeveloper = ((TextView) view.findViewById(R.id.rDev)).getText().toString();
String recognizedContributor = ((TextView) view.findViewById(R.id.rCon)).getText().toString();
String recognizedEliteDeveloper = ((TextView) view.findViewById(R.id.rEliteDev)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(TAG_VTYPE, forumName);
in.putExtra(TAG_VCOLOR, score);
in.putExtra(TAG_THANKS, totalThanks);
in.putExtra(TAG_POSTS, totalPosts);
in.putExtra(TAG_JOIN_DATE, joinDate);
in.putExtra(TAG_ROM_COUNT, romCount);
in.putExtra(TAG_THEME_COUNT, themeCount);
in.putExtra(TAG_MOD_COUNT, modCount);
in.putExtra(TAG_KERNEL_COUNT, kernelCount);
in.putExtra(TAG_TUTORIAL_COUNT, tutorialCount);
in.putExtra(TAG_DEV, recognizedDeveloper);
in.putExtra(TAG_THEMER, recognizedThemer);
in.putExtra(TAG_MODERATOR, moderator);
in.putExtra(TAG_RDEV, recognizedEliteDeveloper);
in.putExtra(TAG_RCOD, recognizedContributor);
startActivity(in);
}});}
protected Boolean doInBackground(final String... args) {
JSONParser jParser = new JSONParser();
// getting JSON string from URL
JSONArray json = jParser.getJSONFromUrl(url);
for (int i = 0; i < json.length(); i++) {
try {
JSONObject c = json.getJSONObject(i);
String forumName = c.getString(TAG_VTYPE);
String score = c.getString(TAG_VCOLOR);
String totalThanks = c.getString(TAG_THANKS);
String totalPosts = c.getString(TAG_POSTS);
String joinDate = c.getString(TAG_JOIN_DATE);
String romCount = c.getString(TAG_ROM_COUNT);
String themeCount = c.getString(TAG_THEME_COUNT);
String modCount = c.getString(TAG_MOD_COUNT);
String kernelCount = c.getString(TAG_KERNEL_COUNT);
String tutorialCount = c.getString(TAG_TUTORIAL_COUNT);
String recognizedDeveloper = c.getString(TAG_DEV);
String recognizedThemer = c.getString(TAG_THEMER);
String moderator = c.getString(TAG_MODERATOR);
String recognizedEliteDeveloper = c.getString(TAG_RDEV);
String recognizedContributor = c.getString(TAG_RCOD);
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_VTYPE, forumName);
map.put(TAG_VCOLOR, score);
map.put(TAG_THANKS, totalThanks);
map.put(TAG_POSTS, totalPosts);
map.put(TAG_JOIN_DATE, joinDate);
map.put(TAG_ROM_COUNT, romCount);
map.put(TAG_THEME_COUNT, themeCount);
map.put(TAG_MOD_COUNT, modCount);
map.put(TAG_KERNEL_COUNT, kernelCount);
map.put(TAG_TUTORIAL_COUNT, tutorialCount);
map.put(TAG_DEV, recognizedDeveloper);
map.put(TAG_THEMER, recognizedThemer);
map.put(TAG_MODERATOR, moderator);
map.put(TAG_RDEV, recognizedEliteDeveloper);
map.put(TAG_RCOD, recognizedContributor);
jsonlist.add(map);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return null;
}}}
and tied it together with a list view and xml for all my values. turned out really cool. i added an onclick on each value to show more individual data

We Keep Coding

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

ListView item onClick can't show wanted result - java

Related

RecyclerCardview did not show anything

How to implement CustomAdapter in ListView Acitivity

Showing data from Arraylist of Hashmap

Use JSON file to populate a listview

json array shows in logacat with no errors but does not show in android view

Categories

Resources