Develop Reference

Run-time Expandable Listview with Edittext and Spinner

My intention is to get data from the run-time growing listview (as shown in below figures) which has Edittext and Spinners and send this data to remote server using json.
Am I on the correct path or there is another kind of method to be used for this.
I want to access Edittext and Spinner from the listview which is expanded at runtime.
My Problem is, whenever a new view is added, it overlaps on the previous view.
Instead, it should get added below the 1st view. (Solved this. See the edited code).
Another thing is how to access edittext & spinner from each view? I want to accept this data from user & save it in the device. How to do that? (in private void SaveUserData() {} method).
Below is my full code.
Edited on 20 Mar 2018
MainActivity.java
package tandel.amit.expandablelistview;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity {
ListView listView;
Button buttonSave;
FloatingActionButton fab;
Adapter adapter;
int count = 0;
String[] Heading = {"User 1","User 2","User 3","User 4"};
String Name = "Name";
String ID = "ID";
String Gender = "Gender";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = findViewById(R.id.list_view);
buttonSave = findViewById(R.id.btnSave);
fab = findViewById(R.id.fabAdd);
buttonSave.setOnClickListener(onClickListener);
fab.setOnClickListener(onClickListener);
adapter = new Adapter(getApplicationContext(), R.layout.row_layout);
listView.setAdapter(adapter);
AddView(count++);
}
View.OnClickListener onClickListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.btnSave:
SaveUserData(); // Save the data to Local Database
break;
case R.id.fabAdd:
AddView(count++); // Add new View in listview
break;
default:
break;
}
}
};
private void AddView(int i) {
DataProvider dataProvider = new DataProvider(Heading[i],Name,Gender,ID);
adapter.add(dataProvider);
adapter.notifyDataSetChanged();
}
private void SaveUserData() {
}
}
Adapter.java
package tandel.amit.expandablelistview;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
/*
* Created by Amit Tandel on 2/2/2018.
*/
public class Adapter extends ArrayAdapter{
List list = new ArrayList();
public Adapter(#NonNull Context context, int resource) {
super(context, resource);
}
#Override
public void add(#Nullable Object object) {
super.add(object);
list.add(object);
}
#Override
public int getCount() {
return this.list.size();
}
#Nullable
#Override
public Object getItem(int position) {
return this.list.get(position);
}
static class DataHandler{
TextView Heading,Name,Gender,ID;
EditText UserName,UserID;
Spinner UserGender;
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
DataHandler dataHandler = new DataHandler();
if (convertView == null){ // If row is empty, we need to create row
LayoutInflater layoutInflater = (LayoutInflater)this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.row_layout,parent,false);
dataHandler.Heading = convertView.findViewById(R.id.tvHeading);
dataHandler.Name = convertView.findViewById(R.id.tvName);
dataHandler.Gender = convertView.findViewById(R.id.tvGender);
dataHandler.ID = convertView.findViewById(R.id.tvID);
dataHandler.UserName = convertView.findViewById(R.id.etName);
dataHandler.UserID = convertView.findViewById(R.id.etID);
dataHandler.UserGender = convertView.findViewById(R.id.spGender);
convertView.setTag(dataHandler);
}else {
dataHandler = (DataHandler) convertView.getTag(); // If row already present then get that row
}
DataProvider dataProvider;
dataProvider = (DataProvider) this.getItem(position);
if (dataProvider != null) {
dataHandler.Heading.setText(dataProvider.getHeading());
dataHandler.Name.setText(dataProvider.getName());
dataHandler.Gender.setText(dataProvider.getGender());
dataHandler.ID.setText(dataProvider.getID());
}
return convertView;
}
}
DataProvider.java
package tandel.amit.expandablelistview;
/*
* Created by Amit Tandel on 2/2/2018.
*/
public class DataProvider {
private String Heading;
private String Name;
private String Gender;
private String ID;
public DataProvider(String Heading, String Name, String Gender, String ID) {
this.setHeading(Heading);
this.setName(Name);
this.setGender(Gender);
this.setID(ID);
}
public String getHeading() {
return Heading;
}
public void setHeading(String heading) {
Heading = heading;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getGender() {
return Gender;
}
public void setGender(String gender) {
Gender = gender;
}
public String getID() {
return ID;
}
public void setID(String ID) {
this.ID = ID;
}
}
activity_main.xml
<?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:padding="16dp"
tools:context="tandel.amit.expandablelistview.MainActivity">
<ListView
android:id="#+id/list_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
n
<Button
android:id="#+id/btnSave"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Save" />
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:id="#+id/fabAdd"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:src="#drawable/plus"
android:layout_marginBottom="80dp" />
</RelativeLayout>
row_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp">
<TextView
android:id="#+id/tvHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="User 1"
android:textSize="18sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:orientation="horizontal"
android:weightSum="2">
<TextView
android:id="#+id/tvName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Name"
android:textSize="16sp" />
<EditText
android:id="#+id/etName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:orientation="horizontal"
android:weightSum="2">
<TextView
android:id="#+id/tvGender"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Gender"
android:textSize="16sp" />
<Spinner
android:id="#+id/spGender"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:orientation="horizontal"
android:weightSum="2">
<TextView
android:id="#+id/tvID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="ID"
android:textSize="16sp" />
<EditText
android:id="#+id/etID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_marginTop="8dp"
android:background="#000000" />
</LinearLayout>

checkbox change on recycler view after every data load

i want to use a checkbox on items in recyclerview i load data from the server 4 by 4 (after seeing the last item he add another 4 new item)but the problem when add new items the checked item change to another item idon't know why i want to save every item checked on SharedPreferences to use them on commande activity
some pictures :
enter image description here
after going dow i found another item checked and the firs one uchecked :
enter image description here
card.xml
<android.support.v7.widget.CardView
android:id="#+id/card_view"
android:layout_width="wrap_content"
android:layout_height="119dp"
android:layout_gravity="center"
android:elevation="3dp"
card_view:cardCornerRadius="1dp"
card_view:cardElevation="4dp"
card_view:cardUseCompatPadding="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/txt_idArticle1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:text="ID Article : "
android:textColor="#android:color/black"
android:textStyle="normal|bold" />
<TextView
android:id="#+id/txt_reference1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/txt_des"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginBottom="5dp"
android:text="Reference : "
android:textColor="#android:color/background_dark"
android:textStyle="normal|bold" />
<TextView
android:id="#+id/txt_des1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/txt_prix"
android:layout_alignBottom="#+id/txt_prix"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:text="Prix : "
android:textColor="#android:color/background_dark"
android:textStyle="normal|bold" />
<TextView
android:id="#+id/txt_des"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toEndOf="#+id/txt_prix1"
android:layout_toRightOf="#+id/txt_prix1"
android:text="TextView" />
<TextView
android:id="#+id/txt_prix"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/txt_prix1"
android:layout_toEndOf="#+id/txt_des1"
android:layout_toRightOf="#+id/txt_des1"
android:text="TextView" />
<TextView
android:id="#+id/txt_idArticle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toEndOf="#+id/txt_idArticle1"
android:layout_toRightOf="#+id/txt_idArticle1"
android:text="TextView" />
<TextView
android:id="#+id/txt_reference"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/txt_reference1"
android:layout_alignBottom="#+id/txt_reference1"
android:layout_toEndOf="#+id/txt_reference1"
android:layout_toRightOf="#+id/txt_reference1"
android:text="TextView" />
<TextView
android:id="#+id/txt_prix1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/txt_reference1"
android:layout_marginBottom="5dp"
android:text="Designation : "
android:textColor="#android:color/black"
android:textStyle="normal|bold" />
<CheckBox
android:id="#+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="panier"
android:textSize="10sp" />
</RelativeLayout>
</android.support.v7.widget.CardView>
recherche_art.java
package com.example.bacha.pfe.activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;
import com.example.bacha.pfe.R;
import com.example.bacha.pfe.adapter.ArticleAdapter;
import com.example.bacha.pfe.classes.Article;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class recherche_art extends AppCompatActivity {
private RecyclerView recyclerView ;
private GridLayoutManager gridLayoutManager;
private ArticleAdapter adapter ;
private List<Article> data_list ;
private String recherche_article;
private ImageButton btnrechArt ;
private EditText arech;
int d;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recherche_art);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
btnrechArt = (ImageButton) findViewById(R.id.btnrechArt);
recherche_art.this.onRestart();
btnrechArt.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
d=0;
Log.d("PFE", String.valueOf(d));
arech= (EditText) findViewById(R.id.eTextRechArt);
data_list = new ArrayList<>();
recherche_article=arech.getText().toString();
load_article_from_server(d);
gridLayoutManager = new GridLayoutManager(recherche_art.this,1);
recyclerView.setLayoutManager(gridLayoutManager);
adapter = new ArticleAdapter(recherche_art.this,data_list);
recyclerView.setAdapter(adapter);
}
});
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
if(gridLayoutManager.findLastCompletelyVisibleItemPosition() == data_list.size()-1){
d=data_list.size();
load_article_from_server(d);
Log.d("PFE", String.valueOf(d));
}
}
});
}
private void load_article_from_server(final int id) {
AsyncTask<Integer, Void, Void> task = new AsyncTask<Integer,Void, Void>() {
#Override
protected Void doInBackground(Integer... Params) {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url("http://10.0.2.2/slim/article/"+recherche_article+"/"+id).build();
try {
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
for(int i=0;i<array.length();i++){
JSONObject object = array.getJSONObject(i);
Article data = new Article(/*dd,*/object.getString("id_Article"),object.getString("Reference"),object.getString("Designation"),object.getString("PVTTC"));
data_list.add(data);
}
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
System.out.print("End of content");
}
return null ;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
adapter.notifyDataSetChanged();
}
};
task.execute(id);
}
}
activity_recherche_art.xml
<TextView
android:text="Recherche Article :"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView"
android:textSize="24sp"
android:textStyle="normal|bold"
android:textAlignment="center"
android:textColor="?attr/colorPrimary"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/recherche"
android:id="#+id/btnrechArt"
android:layout_marginRight="20dp"
android:layout_marginEnd="20dp"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignTop="#+id/eTextRechArt"
/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:ems="10"
android:id="#+id/eTextRechArt"
android:layout_below="#+id/textView"
android:layout_toLeftOf="#+id/btnrechArt"
android:layout_toStartOf="#+id/btnrechArt" />
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
article_view:cardUseCompatPadding="true"
article_view:cardElevation="5dp"
article_view:cardCornerRadius="5dp"
android:scrollbars="vertical"
android:layout_marginTop="18dp"
android:layout_below="#+id/btnrechArt"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
Article.java
package com.example.bacha.pfe.classes;
import java.io.Serializable;
/**
* Created by BACHA on 07/03/2017.
*/
public class Article implements Serializable {
private int id;
private String id_Article,Reference,Designation,PVTTC;
public Article(/*int id,*/ String id_Article, String reference, String designation, String PVTTC) {
// this.id = id;
this.id_Article = id_Article;
Reference = reference;
Designation = designation;
this.PVTTC = PVTTC;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getId_Article() {
return id_Article;
}
public void setId_Article(String id_Article) {
this.id_Article = id_Article;
}
public String getReference() {
return Reference;
}
public void setReference(String reference) {
Reference = reference;
}
public String getDesignation() {
return Designation;
}
public void setDesignation(String designation) {
Designation = designation;
}
public String getPVTTC() {
return PVTTC;
}
public void setPVTTC(String PVTTC) {
this.PVTTC = PVTTC;
}
}
ArticleAdapter.java
package com.example.bacha.pfe.adapter;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.TextView;
import com.example.bacha.pfe.R;
import com.example.bacha.pfe.activity.ArticleDetail;
import com.example.bacha.pfe.classes.Article;
import java.util.List;
import static com.example.bacha.pfe.R.layout.card;
/**
* Created by BACHA on 08/03/2017.
*/
public class ArticleAdapter extends RecyclerView.Adapter<ArticleAdapter.ViewHolder> {
private static Context context ;
private List<Article> my_data ;
public ArticleAdapter(Context context, List<Article> my_data) {
this.context = context;
this.my_data = my_data;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(card,parent,false);
return new ArticleAdapter.ViewHolder(itemView);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.id_Article.setText(my_data.get(position).getId_Article());
holder.Reference.setText(my_data.get(position).getReference());
holder.Designation.setText(my_data.get(position).getDesignation());
holder.PVTTC.setText(my_data.get(position).getPVTTC());
holder.root.setTag(my_data.get(position));
}
#Override
public int getItemCount() {
return my_data.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public TextView id_Article,Reference,Designation,PVTTC;
View root;
public ViewHolder(View itemView) {
super(itemView);
root = itemView;
root.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Article art = (Article)v.getTag();
Intent intent = new Intent(context, ArticleDetail.class);
intent.putExtra("REFERENCE", art.getReference());
context.startActivity(intent);
}
});
id_Article=(TextView) itemView.findViewById(R.id.txt_idArticle);
Reference=(TextView) itemView.findViewById(R.id.txt_reference);
Designation=(TextView) itemView.findViewById(R.id.txt_des);
PVTTC=(TextView) itemView.findViewById(R.id.txt_prix);
}
#Override
public void onClick(View v) {
}
}
}

How to set OnItemClickListener on ListView using CustomAdapter

I have displayed the list of student from the database, field that are displayed Student_Roll_no, Student_Name and Student_ID.
Student_Roll_no and Student_Name are display using TextView and Student_ID id is display with checkbox.
Now I want to set the code by which, when I click at the list the checkbox of that particular row should be checked but the listview is not responding to OnItemClickListener function, as there i have make a toast that doesn't appear when i click on the list.
Sry for the bad english
activity_attendence.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_attendence"
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="com.tejas.paras.bpibs.Attendence"
android:orientation="vertical">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/roll"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:paddingTop="6dip"
android:text="Roll"
android:layout_weight=".1"
android:textColor="#000000" />
<TextView
android:id="#+id/name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:text="Name"
android:layout_weight=".6"
android:textColor="#000000" />
<TextView
android:text="Present"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="#+id/textView26"
android:layout_weight=".2"
android:textColor="#000000" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:background="#000000"
android:layout_height="1dp"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"></LinearLayout>
<ListView
android:layout_width="match_parent"
android:layout_height="375dp"
android:id="#+id/listview"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:layout_weight="1.10" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:text="Save Attendence"
android:layout_width="match_parent"
android:background="#drawable/buttonlayout2"
android:textColor="#FFFFFF"
android:layout_height="wrap_content"
android:id="#+id/button5" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
Attendence.java
package com.tejas.paras.bpibs;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
public class Attendence extends AppCompatActivity{
String date, course, year,ID;
String myJSON;
private static final String TAG_RESULTS = "result";
String link;
JSONArray peoples = null;
BufferedReader bufferedReader;
String result,data;
ArrayList<HashMap<String, String>> personList;
Button b5;
ListView list,listView;
private DataModel dataModel;
private ArrayList<DataModel> dataModels;
private static CustomAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_attendence);
list=(ListView)findViewById(R.id.listview);
b5=(Button)findViewById(R.id.button5);
getData();
b5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(Attendence.this,"1."+view, Toast.LENGTH_SHORT).show();
}
});
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> a, View v, int position,
long id) {
dataModel = dataModels.get(position);
Toast.makeText(Attendence.this,"2.1",Toast.LENGTH_LONG).show();
ID=dataModel.getID();
Toast.makeText(Attendence.this,dataModel.getRoll(),Toast.LENGTH_LONG).show();
}
});
}
protected void showList() {
dataModels= new ArrayList<>();
try {
JSONObject jsonObj = new JSONObject(myJSON);
peoples = jsonObj.getJSONArray(TAG_RESULTS);
for (int i = 0; i < peoples.length(); i++) {
JSONObject c = peoples.getJSONObject(i);
dataModels.add(new DataModel(c.getString("name"),c.getString("id"), c.getString("roll")));
}
adapter = new CustomAdapter(dataModels, getApplicationContext());
list.setAdapter(adapter);
}
catch (JSONException e) {
e.printStackTrace();
}
}
public void getData() {
class GetDataJSON extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
try {
link = "http://painnation.esy.es/attendence.php?date=18022017&course=MCA&year=3";
URL url = new URL(link);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = bufferedReader.readLine()) != null)
{
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
// Oops
}
return result;
}
#Override
protected void onPostExecute(String result) {
myJSON = result;
showList();
}
}
GetDataJSON g = new GetDataJSON();
g.execute();
}
}
item_layout.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="wrap_content"
android:orientation="vertical"
android:padding="10dp"
android:paddingLeft="10dp"
android:paddingRight="10dp" >
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight=".1">
<TextView
android:id="#+id/roll"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:paddingTop="6dip"
android:textStyle="bold"
android:text="Roll"
android:layout_weight=".1"
android:textColor="#000000" />
<TextView
android:id="#+id/name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:textStyle="bold"
android:text="Name"
android:layout_weight=".6"
android:textColor="#000000" />
<CheckBox
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="#+id/id"
android:layout_weight=".15"
android:textColor="#000000" />
</LinearLayout>
</LinearLayout>
CustomAdapter.java
package com.tejas.paras.bpibs;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.TextView;
import java.util.ArrayList;
public class CustomAdapter extends ArrayAdapter<DataModel> implements View.OnClickListener{
private ArrayList<DataModel> dataSet;
Context mContext;
private static class ViewHolder {
TextView name;
TextView roll;
CheckBox id;
}
public CustomAdapter(ArrayList<DataModel> data, Context context) {
super(context, R.layout.item_layout, data);
this.dataSet = data;
this.mContext=context;
}
#Override
public void onClick(View v) {
int position=(Integer) v.getTag();
Object object= getItem(position);
DataModel dataModel=(DataModel)object;
}
private int lastPosition = -1;
#Override
public View getView(int position, View convertView, ViewGroup parent) {
DataModel dataModel = getItem(position);
ViewHolder viewHolder;
final View result;
if (convertView == null) {
viewHolder = new ViewHolder();
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(R.layout.item_layout, parent, false);
viewHolder.name = (TextView) convertView.findViewById(R.id.name);
viewHolder.roll = (TextView) convertView.findViewById(R.id.roll);
viewHolder.id=(CheckBox) convertView.findViewById(R.id.id);
result=convertView;
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
result=convertView;
}
lastPosition = position;
viewHolder.name.setText(dataModel.getName());
viewHolder.roll.setText(dataModel.getRoll());
viewHolder.id.setText(dataModel.getID());
return convertView;
}
}
DataModel.java
package com.tejas.paras.bpibs;
public class DataModel {
String roll;
String name;
String id;
public DataModel(String name1, String id1, String roll1) {
this.name=name1;
this.id=id1;
this.roll=roll1;
}
public String getName() {
return name;
}
public String getID() {
return id;
}
public String getRoll() {
return roll;
}
}
Attendence.php file and the database is hosted on a free hosting web server(Hostinger). you can check the DB output using the
http://painnation.esy.es/attendence.php?date=18022017&course=MCA&year=3
Output Screen
Data from server is fetch in json format.plz comment the code to do check the checkbox by clicking listview.
Thank You

i think you should put android:focusable="false" in item_layout.xml for checkbox, then onItemClickListener respond. for checkbox you need to put variable in DataModel, android make it true or false and change in listview put adapter.notifyDataSetChanged
<CheckBox
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="#+id/id"
android:layout_weight=".15"
android:focusable="false"
android:textColor="#000000" />

there are no any display on listView with baseadapter

every one,
I am a beginning learner on android system ,
I create a small app that could get specific data , like foreign exchange rate from bank website ,
this app uses Jsoup , ListView , BaseAdapter etc...
finally , the only problem is the listView has no any display ,
could any one tell me , how to fix it.
Thanks.
Category.java
public class Category
{
String bank_name;
String page_url;
Category(String bank_name,String url)
{
this.bank_name=bank_name;
this.page_url=url;
}
#Override
public String toString()
{
return bank_name;
}
}
MainActivity.java
import android.app.Activity;
import android.os.Bundle;
import android.content.*;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends Activity
{
ArrayList<Category> items;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
items=new ArrayList<Category>();
items.add(new Category("台灣銀行","http://rate.bot.com.tw/Pages/Static/UIP003.zh-TW.htm"));
ArrayAdapter<Category> adapter = new ArrayAdapter<Category>(this , android.R.layout.simple_list_item_1 ,items);
ListView lv = (ListView)findViewById(R.id.lv);
lv.setAdapter(adapter);
lv.setOnItemClickListener(itemClick);
}
OnItemClickListener itemClick = new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> av , View v , int position , long id)
{
Category category = items.get(position);
Intent intent = new Intent();
intent.setClass(MainActivity.this , RateActivity.class );
intent.putExtra("bank_name", category.bank_name);
intent.putExtra("page_url" , category.page_url);
startActivity(intent);
}
};
RateBean.java
public class RateBean
{
private String currency;
private String cashBuy;
private String cashSold;
private String spotBuy;
private String spotSold;
public RateBean()
{
currency = "";
cashBuy = "";
cashSold = "";
spotBuy = "";
spotSold = "";
}
public RateBean(String [] strArr)
{
this.currency=strArr[0];
this.cashBuy=strArr[1];
this.cashSold=strArr[2];
this.spotBuy=strArr[3];
this.spotSold=strArr[4];
}
public RateBean(String currency , String cashBuy , String cashSold , String spotBuy ,String spotSold)
{
setCurrency(currency);
setCashBuy(cashBuy);
setCashSold(cashSold);
setSpotBuy(spotBuy);
setSpotSold(spotSold);
}
//Currency setter and getter
public void setCurrency(String currency)
{
this.currency = currency ;
}
public String getCurrency()
{
return currency;
}
//Cash buy setter and getter
public void setCashBuy(String cashBuy)
{
this.cashBuy = cashBuy;
}
public String getCashBuy()
{
return cashBuy;
}
//Cash sold setter and getter
public void setCashSold(String cashSold)
{
this.cashSold = cashSold;
}
public String getCashSold()
{
return cashSold;
}
//Spot buy setter and getter
public void setSpotBuy(String spotBuy)
{
this.spotBuy = spotBuy;
}
public String getSpotBuy()
{
return spotBuy;
}
//Spot sold setter and getter
public void setSpotSold(String spotSold)
{
this.spotSold = spotSold;
}
public String getSpotSold()
{
return spotSold;
}
}
RateActivity.java
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.util.ArrayList;
public class RateActivity extends ListActivity
{
Context context ;
ArrayList<RateBean> rateBean_item;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_rate_show);
TextView updateTime = (TextView)findViewById(R.id.updateTime_textView);
Intent intent = getIntent();
String category = intent.getStringExtra("bank_name");
String page_url = intent.getStringExtra("page_url");
setTitle(category);
context=this;
ConnectThread thread = new ConnectThread(context , rateBean_item , page_url , updateTime);
thread.start();
}
public class ConnectThread extends Thread
{
Context context;
ArrayList<RateBean> rateBean_item;
String page_url ;
TextView updateTime;
RateAdapter adapter;
RateBean rateBean;
int i =0;
public ConnectThread(Context context , ArrayList<RateBean> rateBean_item , String page_url , TextView updateTime )
{
this.context=context;
this.rateBean_item=rateBean_item;
this.page_url=page_url;
this.updateTime=updateTime;
}
#Override
public void run()
{
try
{
String currency="";
String cashBuy="";
String cashSold="";
String spotBuy="";
String spotSold="";
Document doc = Jsoup.connect(page_url).get();
rateBean_item = new ArrayList<>();
String temp=doc.select("td[style=width:326px;text-align:left;vertical-align:top;color:#0000FF;font-size:11pt;font-weight:bold;]").text();
String time=temp.substring(12);
updateTime.setText("匯率更新時間：\n" + time);
for( Element title:doc.select("td.titleLeft"))
{
currency=title.text();
if( i < doc.select("td.decimal").size())
{
cashBuy=doc.select("td.decimal").eq(i++).text();
cashSold=doc.select("td.decimal").eq(i++).text();
spotBuy=doc.select("td.decimal").eq(i++).text();
spotSold=doc.select("td.decimal").eq(i++).text();
rateBean = new RateBean( a , b , c ,d , e );
rateBean_item.add(rateBean);
}
}
adapter = new RateAdapter(context , rateBean_item);
setListAdapter(adapter);
adapter.notifyDataSetChanged();
}
catch( Exception exception )
{
exception.printStackTrace();
}
}
}
}
RateAdapter.java
import java.util.ArrayList;
import android.util.Log;
import android.widget.BaseAdapter;
import android.view.*;
import android.widget.*;
import android.content.*;
public class RateAdapter extends BaseAdapter
{
private LayoutInflater inflater;
private ArrayList<RateBean> list ;
public RateAdapter()
{
}
public RateAdapter(Context context , ArrayList<RateBean> list )
{
this.inflater = LayoutInflater.from(context);
this.list = list;
}
#Override
public int getCount()
{
return list.size();
}
#Override
public Object getItem(int position)
{
return list.get(position);
}
#Override
public long getItemId(int position)
{
return position;
}
public static class ViewHolder
{
TextView currency_name;
TextView cash_buy;
TextView cash_sold;
TextView spot_buy;
TextView spot_sold;
}
#Override
public View getView( int position , View convertView , ViewGroup parent)
{
ViewHolder holder;
if(convertView == null)
{
convertView = inflater.inflate(R.layout.rate_item , null);
holder = new ViewHolder();
holder.currency_name = (TextView)convertView.findViewById(R.id.xml_currency);
holder.cash_buy = (TextView)convertView.findViewById(R.id.xml_cashBuy);
holder.cash_sold = (TextView)convertView.findViewById(R.id.xml_cashSold);
holder.spot_buy = (TextView)convertView.findViewById(R.id.xml_spotBuy);
holder.spot_sold = (TextView)convertView.findViewById(R.id.xml_spotSold);
convertView.setTag(holder);
}
else
{
holder = (ViewHolder)convertView.getTag();
}
RateBean rateItem = list.get(position);
holder.currency_name.setText(rateItem.getCurrency());
holder.cash_buy.setText(rateItem.getCashBuy());
holder.cash_sold.setText(rateItem.getCashSold());
holder.spot_buy.setText(rateItem.getSpotBuy());
holder.spot_sold.setText(rateItem.getSpotSold());
return convertView;
}
}
activity_main.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/title_textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="銀行查詢選擇"/>
<ListView
android:id="#+id/lv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
activity_rate_show.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/updateTime_textView"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="updateTime"/>
<Button
android:id="#+id/fresh_button"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:onClick="onClick"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/button_fresh"/>
</LinearLayout>>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1.5"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/currency"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/cash_buy"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/cash_sold"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/spot_buy"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/spot_sold"/>
</LinearLayout>
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent">
</ListView>
</LinearLayout>
rate_item.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/xml_currency"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1.25"
android:textAppearance="?android:attr/textAppearanceLarge"
android:hint="text"/>
<TextView
android:id="#+id/xml_cashBuy"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
<TextView
android:id="#+id/xml_cashSold"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
<TextView
android:id="#+id/xml_spotBuy"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
<TextView
android:id="#+id/xml_spotSold"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:hint="text"/>
</LinearLayout>

<ListView
android:id="#+id/lv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Your listview needs a height, it cannot be wrap_content. Give it a height like 500dp or match_parent.

ListFragment and Custom Adapter Issue

Two issue with List Fragment: 1. I have a class that extends ListFragments.In the onCreated, I am setting my custom Adapter. The issue is that when the user logs in, the adadpter is null and would not have a value until the user searches for an owner. As a result, it throws an exception when it tries to set up the listadapter and it finds the ArrayAdapter object to be null. I have a custome layout that has a listview and a textview, but I still gets the error. See sample code below. I bold the line of code where the issue happens. Also, I bold few other section where I think it may be important to notice.
I implemented Parcelable in the class "Owner" so that I can pass the object as a ParcelableArray. Even though the object is not null, retrieving it in the OwnerDetail class shows null as if I did not pass it it. I've seen several example, but I am not able to get it right. What am I doing wrong here?
Note: If I were to call the AsyncTask in the OwnerDetail class and set the ListAdapter, it will work fine. The issue with that is that it will display a list of owners as soon as the user is logged in which is not the expected behavior. The behavior that I want is to login first, search for an owner, display the owner, double click on an owner, and finally display a list of cars that the owner owns. I am doing this project, so I can learn how to use ListFraments.
// Here is the entire code
package com.mb.carlovers;
import android.os.Parcel;
import android.os.Parcelable;
public class Car implements Parcelable {
private String _make;
private String _model;
private String _year;
public Car()
{
this._make = "";
this._model = "";
this._year = "";
}
public Car(String make)
{
this._make = make;
}
public Car(String make, String year)
{
this._make = make;
this._year = year;
}
public Car(String make, String model, String year)
{
this._make = make;
this._model = model;
this._year = year;
}
//Getters
public String getMake()
{
return _make;
}
public String getModel()
{
return _model;
}
public String getYear()
{
return _year;
}
//Setters
public void setMake(String make)
{
_make = make;
}
public void setModel(String model)
{
_model = model;
}
public void setYear(String year)
{
_year = year;
}
#Override
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
// TODO Auto-generated method stub
}
}
package com.mb.carlovers;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
public class CarDetail extends ListFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.customize_layout,container,false);
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
String[] myCars = {};
super.onActivityCreated(savedInstanceState);
ArrayAdapter<String> carAdapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_activated_1, myCars);
setListAdapter(carAdapter);
}
}
package com.mb.carlovers;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class Login extends Activity implements OnClickListener{
private Button btnLogin;
private EditText etUsername, etPassword;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
initializeVariables();
}
public void initializeVariables()
{
btnLogin = (Button) this.findViewById(R.id.bLogin);
etUsername = (EditText)this.findViewById(R.id.etUserName);
etPassword = (EditText)this.findViewById(R.id.etPassword);
btnLogin.setOnClickListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.login, menu);
return true;
}
#Override
public void onClick(View v) {
Log.i("Tag", "In Onclick Litener");
String uName = etUsername.getText().toString();
String pWord = etPassword.getText().toString();
if(uName.equals("owner") && pWord.equals("1234"))
{
Log.i("Tag", "username =" + uName + "Password =" + pWord);
Intent intent = new Intent(this, People.class);
startActivity(intent);
}
}
}
package com.mb.carlovers;
import android.os.Parcel;
import android.os.Parcelable;
public class Owner implements Parcelable {
private String _firstName;
private String _lastName;
private String _carId;
private Car _car;
public Owner()
{
this._firstName = "";
this._lastName = "";
this._carId = "";
}
public Owner(String lName)
{
this._lastName = lName;
}
public Owner(String lName, String cId)
{
this._lastName = lName;
this._carId = cId;
}
public Owner(String lName, String fName, String cId)
{
this._lastName = lName;
this._firstName = fName;
this._carId = cId;
}
public Owner(String lName, String fName, String cId, Car car)
{
this._lastName = lName;
this._firstName = fName;
this._carId = cId;
this._car = car;
}
//Getters
public String getFirstName()
{
return _firstName;
}
public String getLastName()
{
return _lastName;
}
public String getCarId()
{
return _carId;
}
public Car getCar()
{
return _car;
}
//Setters
public void setFirstName(String fName)
{
_firstName = fName;
}
public void setLastName(String lName)
{
_lastName = lName;
}
public void setCarId(String cId)
{
_carId = cId;
}
public void setCar(Car car)
{
_car = car;
}
#Override
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(_firstName);
dest.writeString(_lastName);
dest.writeString(_carId);
dest.writeParcelable(_car, flags);
}
public Owner(Parcel source){
_firstName = source.readString();
_lastName = source.readString();
_carId = source.readString();
_car = source.readParcelable(Car.class.getClassLoader());
}
public class MyCreator implements Parcelable.Creator<Owner> {
public Owner createFromParcel(Parcel source) {
return new Owner(source);
}
public Owner[] newArray(int size) {
return new Owner[size];
}
}
}
package com.mb.carlovers;
import com.mb.carlovers.adapter.OwnerAdapter;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class OwnerDetail extends ListFragment {
OwnerAdapter ownerAdapter = null;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.customize_layout,container, false);
}
#Override
public void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
}
#Override
public void onCreate(Bundle savedInstanceState) {
Owner[] myOwners = null;
super.onCreate(savedInstanceState);
Bundle values = getActivity().getIntent().getExtras();
if(values != null)
{
myOwners = (Owner[]) values.getParcelableArray("test");
}
super.onActivityCreated(savedInstanceState);
ownerAdapter = new OwnerAdapter(getActivity(), R.layout.owner_detail , myOwners);
ownerAdapter.notifyDataSetChanged();
}
package com.mb.carlovers;
import java.util.List;
import com.mb.carlovers.asynctask.OnwerAsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
public class People extends FragmentActivity implements OnClickListener, OnItemSelectedListener {
private Button search;
private EditText etSearchBy, etSearchByID;
private Spinner spOption;
private String selectedOption = null;
private TextView tvErrorMessage;
#Override
protected void onCreate(Bundle arg0) {
super.onCreate(arg0);
setContentView(R.layout.people);
InitializeVariables();
}
private void InitializeVariables()
{
etSearchBy = (EditText) this.findViewById(R.id.etByLastName);
etSearchByID = (EditText) this.findViewById(R.id.etCarID);
spOption = (Spinner) this.findViewById(R.id.spOption);
search = (Button) this.findViewById(R.id.bSearch);
search.setOnClickListener(this);
tvErrorMessage = (TextView) this.findViewById(R.id.tvErrorMessage);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,R.array.spOptions, android.R.layout.simple_spinner_dropdown_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spOption.setAdapter(adapter);
spOption.setOnItemSelectedListener(this);
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
#Override
protected void onPause() {
super.onPause();
}
#Override
public void onClick(View v) {
String searchByName = etSearchBy.getText().toString();
String searchById = etSearchByID.getText().toString();
if(selectedOption == null || selectedOption == "All")
{
if(searchByName.matches("") || searchById.matches(""))
{
tvErrorMessage.setText("You must select a last name and car id");
} else
{
}
} else if(selectedOption == "Name")
{
if(!searchByName.matches(""))
{
OnwerAsyncTask asynTask = new OnwerAsyncTask();
List<Owner> lt = null;
try {
lt = asynTask.execute("").get();
} catch (Exception e) {
e.printStackTrace();
}
Owner myOwners[] = lt.toArray(new Owner[lt.size()]);
Bundle data = new Bundle();
data.putParcelableArray("test", myOwners);
} else
{
tvErrorMessage.setText("You must enter the last name of the owner.");
}
} else if (selectedOption == "ID")
{
if(!searchById.matches(""))
{
String st = null;
String d = st;
} else
{
tvErrorMessage.setText("You must enter the car id that you'd like to search.");
}
}
}
#Override
public void onItemSelected(AdapterView<?> parent, View view, int pos,long id) {
switch(pos)
{
case 0:
selectedOption = "All";
break;
case 1:
selectedOption ="Name";
break;
case 2:
selectedOption ="ID";
break;
default:
selectedOption = null;
break;
}
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
selectedOption ="ALL";
}
}
package com.mb.carlovers.adapter;
import com.mb.carlovers.Car;
import com.mb.carlovers.R;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class CarAdapter extends ArrayAdapter<Car> {
private Context context;
private int layoutResourceId;
private Car data[] = null;
public CarAdapter(Context context, int resource, Car[] data) {
super(context, resource, data);
this.context = context;
this.layoutResourceId = resource;
this.data = data;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
CarHolder holder = null;
if(row == null)
{
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new CarHolder();
holder.tvMake = (TextView) row.findViewById(R.id.tvMake);
holder.tvModel = (TextView) row.findViewById(R.id.tvModel);
holder.tvYear = (TextView) row.findViewById(R.id.tvYear);
row.setTag(holder);
} else
{
holder = (CarHolder) row.getTag();
}
Car item = data[position];
holder.tvMake.setText(item.getMake().toString());
holder.tvModel.setText(item.getModel().toString());
holder.tvYear.setText(item.getYear().toString());
return row;
}
public static class CarHolder
{
TextView tvMake;
TextView tvModel;
TextView tvYear;
}
}
package com.mb.carlovers.adapter;
import com.mb.carlovers.Owner;
import com.mb.carlovers.R;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class OwnerAdapter extends ArrayAdapter<Owner> {
private Context context;
private int layoutResourceId;
private Owner data[] = null;
public OwnerAdapter(Context context, int textViewResourceId,Owner[] data) {
super(context, textViewResourceId, data);
this.context = context;
this.layoutResourceId = textViewResourceId;
this.data = data;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
OwnerHolder holder = null;
if(row == null)
{
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new OwnerHolder();
holder.tvFName = (TextView) row.findViewById(R.id.tvFirstName);
holder.tvLName = (TextView) row.findViewById(R.id.tvLastName);
holder.tvCId = (TextView) row.findViewById(R.id.tvCarID);
row.setTag(holder);
} else
{
holder = (OwnerHolder) row.getTag();
}
Owner item = data[position];
holder.tvFName.setText(item.getFirstName());
holder.tvLName.setText("Example");
holder.tvCId.setText("1");
return row;
}
static class OwnerHolder
{
TextView tvFName;
TextView tvLName;
TextView tvCId;
}
}
package com.mb.carlovers.asynctask;
import java.util.ArrayList;
import java.util.List;
import com.mb.carlovers.Car;
import android.os.AsyncTask;
public class CarAsyncTask extends AsyncTask<String, Void, List<Car>> {
private List<Car> item = null;
#Override
protected List<Car> doInBackground(String... params) {
item = new ArrayList<Car>();
item.add(new Car("Chevy","Caprice","2002"));
item.add(new Car("Chevy","Malibu","2014"));
item.add(new Car("Dodge","Stratus","2002"));
item.add(new Car("Saturn","L300","2004"));
return item;
}
#Override
protected void onPostExecute(List<Car> result) {
super.onPostExecute(result);
}
}
package com.mb.carlovers.asynctask;
import java.util.ArrayList;
import java.util.List;
import com.mb.carlovers.Owner;
import android.os.AsyncTask;
public class OnwerAsyncTask extends AsyncTask<String, Void, List<Owner>> {
private List<Owner> items = null;
#Override
protected List<Owner> doInBackground(String... params) {
try
{
items = new ArrayList<Owner>();
Owner own = new Owner();
own.setFirstName("John");
own.setLastName("Smith");
own.setCarId("1");
items.add(own);
Owner own1 = new Owner();
own1.setFirstName("Samantha");
own1.setLastName("Right");
own1.setCarId("2");
items.add(own1);
Owner own2 = new Owner();
own2.setFirstName("Regie");
own2.setLastName("Miller");
own2.setCarId("3");
items.add(own2);
Owner own3 = new Owner();
own3.setFirstName("Mark");
own3.setLastName("Adam");
own3.setCarId("4");
items.add(own3);
} catch(Exception ex)
{
ex.toString();
}
return items;
}
#Override
protected void onPostExecute(List<Owner> result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
}
}
// car_detail.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Car Detail Page" />
</LinearLayout>
// car_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<TextView
android:id="#+id/tvMake"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="" />
<TextView
android:id="#+id/tvModel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="" />
<TextView
android:id="#+id/tvYear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="" />
</LinearLayout>
//customize_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#id/android:list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
<TextView
android:id="#id/android:empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="No record to be displayed."
/>
</LinearLayout>
//Login.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
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=".Login" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="User Name"
android:textSize="30sp"
android:layout_marginTop="10dp"
android:layout_gravity="center"
/>
<EditText
android:id="#+id/etUserName"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:ems="10"
android:layout_gravity="center"
android:layout_marginTop="10dp"
>
<requestFocus />
</EditText>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Password"
android:textSize="30sp"
android:layout_marginTop="10dp"
android:layout_gravity="center"
/>
<EditText
android:id="#+id/etPassword"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:ems="10"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:inputType="textPassword" />
<Button
android:id="#+id/bLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_gravity="center"
android:text="Login" />
</LinearLayout>
//owner_detail.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<TextView
android:id="#+id/tvFirstName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="TextView" />
<TextView
android:id="#+id/tvLastName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="TextView" />
<TextView
android:id="#+id/tvCarID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="TextView" />
</LinearLayout>
// People.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1"
>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search by last name"
android:textSize="30sp"
android:layout_marginLeft="10dp"
android:layout_marginTop="15dp"
/>
<EditText
android:id="#+id/etByLastName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:inputType="textPersonName" >
<requestFocus />
</EditText>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search by car id"
android:textSize="30sp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10sp"
/>
<EditText
android:id="#+id/etCarID"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:layout_marginLeft="10dp"
android:layout_marginTop="10sp"
/>
<Spinner
android:id="#+id/spOption"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="#array/spOptions"
/>
<TextView
android:id="#+id/tvErrorMessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#FF0000"
android:layout_marginTop="10dp"
android:text="" />
<Button
android:id="#+id/bSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Button" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="2"
>
<fragment
android:id="#+id/fOwnerDetail"
android:name="com.mb.carlovers.OwnerDetail"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
/>
<fragment
android:id="#+id/fragment1"
android:name="com.mb.carlovers.CarDetail"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
/>
</LinearLayout>
</LinearLayout>
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setListAdapter(ownerAdapter);
}
}

Your code has a lot of problems:
1 Never call lifecycle methods on your own like you do in the OwnerDetail class with super.onActivityCreated(savedInstanceState);
2 Bundle values = getActivity().getIntent().getExtras(); ... values.getParcelableArray("test"); will normally fail because this piece of code will get the activity reference, get the Intent that started the activity and then try to find data passed in under the test key in that Intent. You don't pass such data to the People activity so there will be nothing to be found. You'd normally want to pass a Bundle containing the data at the moment of the creation of the fragment.
3 If you use the fragment in the xml layout you'll not be able to use a Bundle to pass data, instead you either add the fragment manually with transactions and then use a Bundle or you create a setter method in the fragment class and use that. So instead of Bundle data = new Bundle(); data.putParcelableArray("test", myOwners);, which does nothing, get a reference to your fragment and pass the myOwners array through a method.
4 Your AsyncTask will be pretty useless if you use them with .get() because the get() method will wait the AsyncTask to finish, blocking the UI tread as well. Instead you should just start the AsyncTask and then in the onPostExecute() pass the data around.
Here is an example with a simple method which will not change most of your code(which will happen if you manually add the fragments):
// where you start the owner asynctask
if(!searchByName.matches("")) {
OnwerAsyncTask asynTask = new OnwerAsyncTask(People.this);
asynTask.execute("");
}
//...
Then change the OnwerAsyncTask like this:
public class OnwerAsyncTask extends AsyncTask<String, Void, List<Owner>> {
private List<Owner> items = null;
private FragmentActivity mActivity;
public OnwerAsyncTask(FragmentActivity activity) {
mActivity = activity;
}
// doInBackground()...
#Override
protected void onPostExecute(List<Owner> result) {
//I'm assuming that items is the data you want to return, so
// find the OwnerDetail fragment and directly assign the data
OwnerDetail fragment = (OwnerDetail)mActivity.getSupportFragmentManager().findFragmentById(R.id.fOwnerDetail);
fragment.setData(); // to setData you'll pass the data you have in the AsyncTask
// the items list? or you transform that into an array?
}
and in the OwnerDetail fragment:
public class OwnerDetail extends ListFragment {
OwnerAdapter ownerAdapter = null;
public void setData() {
// update the adapter, create a new one etc.
}