I want to use list view by using custom list view adapter. My problem is that I am not getting list view at run time in my app.
CourseActivity.java
package com.technerdshub.vusocial.Activities;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.Toast;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.SaveCallback;
import com.technerdshub.vusocial.DBHelper;
import com.technerdshub.vusocial.Models.Course;
import com.technerdshub.vusocial.Models.StudyProgramModel;
import com.technerdshub.vusocial.Models.User;
import com.technerdshub.vusocial.R;
import java.util.ArrayList;
import java.util.List;
public class CourseActivity extends AppCompatActivity {
ListView list;
ArrayList arrayList = new ArrayList();
CourseViewAdapter adapter;
Course courseObject;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.course_activity);
List<Course> courseList;
DBHelper db = new DBHelper(this);
courseList = db.getAllCourses();
list = (ListView) findViewById(R.id.listview1);
for (Course c : courseList)
{
arrayList.add(c);
}
adapter = new CourseViewAdapter(this, arrayList);
adapter.courseActivity = this;
list.setAdapter(adapter);
User user = User.getInstance();
saveUserOnParse(user);
}
private void saveUserOnParse(User user) {
ParseObject parseUser = new ParseObject("UserData");
parseUser.put("name", user.getName());
parseUser.put("vuId", user.getVuId());
parseUser.put("studyProgram", user.getStudyProgram());
parseUser.put("facebookId", user.getFacebookId());
parseUser.put("facebookEmail", user.getFacebookEmail());
parseUser.saveInBackground(new SaveCallback() {
#Override
public void done(ParseException e) {
if (e==null){
// Intent i = new Intent(getContext(), StudentDashboardActivity.class);
//// i.putExtra("E-mail", "abc");
// startActivity(i);
}
else {
Toast temp = Toast.makeText(CourseActivity.this,"Data is not saved.", Toast.LENGTH_SHORT);
temp.show();
}
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
// check if the request code is same as what is passed here it is 4
if(requestCode==2)
{
courseObject = (Course) data.getExtras().getSerializable("SelectedCourse");
}
}
}
CourseViewAdapter.java
package com.technerdshub.vusocial.Activities;
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import com.technerdshub.vusocial.Models.Course;
import com.technerdshub.vusocial.Models.StudyProgramModel;
import com.technerdshub.vusocial.R;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
/**
* Created by Saroosh on 7/16/2016.
*/
public class CourseViewAdapter extends BaseAdapter {
protected CourseActivity courseActivity;
Context mContext;
LayoutInflater inflater;
private List<Course>worldpopulationlist=null;
private ArrayList<Course> arraylist;
public CourseViewAdapter(Context context, List<Course>worldpopulationlist){
mContext = context;
this.worldpopulationlist = worldpopulationlist;
inflater = LayoutInflater.from(mContext);
this.arraylist = new ArrayList<Course>();
this.arraylist.addAll(worldpopulationlist);
}
public class ViewHolder {
TextView courseCode;
TextView courseName;
}
#Override
public int getCount() {
return 0;
}
#Override
public Course getItem(int position) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
public View getView(final int position, View view, ViewGroup parent) {
final ViewHolder holder;
if (view == null) {
holder = new ViewHolder();
view = inflater.inflate(R.layout.c_list_item, null);
// Locate the TextViews in listview_item.xml
holder.courseName = (TextView) view.findViewById(R.id.course_name);
holder.courseCode = (TextView) view.findViewById(R.id.course_code);
// holder.duration = (TextView) view.findViewById(R.id.program_duration);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
// Set the results into TextViews
holder.courseName.setText(worldpopulationlist.get(position).getCourseName());
holder.courseCode.setText(worldpopulationlist.get(position).getCourseCode());
//holder.duration.setText(worldpopulationlist.get(position).getDuration());
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// Send single item click data to SingleItemView Class
Intent intent = new Intent(mContext, CourseActivity.class);
// Pass all data ran
intent.putExtra("SelectedCourse", worldpopulationlist.get(position));
// Pass all data country
courseActivity.setResult(2,intent);
courseActivity.finish();
}
});
return view;
}
// Filter Class
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
worldpopulationlist.clear();
if (charText.length() == 0) {
worldpopulationlist.addAll(arraylist);
}
else
{
for (Course wp : arraylist)
{
if (wp.getCourseName().toLowerCase(Locale.getDefault()).contains(charText))
{
worldpopulationlist.add(wp);
}
}
}
notifyDataSetChanged();
}
}
course_activity.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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"
tools:context=".Activities.CourseActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<include
android:id="#+id/my_tool_bar"
layout="#layout/tool_bar"
>
</include>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_c" />
</android.support.design.widget.CoordinatorLayout>
c_list_item.xml
<?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="fill_parent"
android:paddingLeft="4dp"
android:paddingRight="4dp"
>
<TextView
android:id="#+id/course_code"
android:layout_width="70dp"
android:layout_height="70dp"
android:paddingTop="10dp"
android:paddingLeft="10dp"
android:paddingRight="10dp" />
<TextView
android:id="#+id/course_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_toRightOf="#+id/course_code"
android:paddingBottom="5dp"
android:textColor="#FFFFFF"
android:textSize="15sp" />
</RelativeLayout>
First of all your getCount() returns 0 which means you are telling the Adapter that there's nothing in there, try returning arraylist.size()
Moreover, why are there two lists in your Adapter?
Edit : Nevermind, it's for your filtering I see, then try returning worldpopulationlist.size()
You can use this code for it as you need to return size in adapter getCount method:
#Override
public int getCount() {
return arraylist.size();
}
#Override
public Course getItem(int position) {
return arraylist.get(position);
}
Get your worldpopulationlist array count
public int getCount() {
return worldpopulationlist.size();
}
Remove these methods
#Override
public int getCount() {
return 0;
}
#Override
public Course getItem(int position) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
Change your class definition
public class CourseViewAdapter extends ArrayAdapter<Course>
Use only one list (there's an alternative, correct way, to apply filters to an Adapter)
Context mContext;
LayoutInflater inflater;
private List<Course> arraylist;
public CourseViewAdapter(Context context, ArrayList<Course> list){
super(context, 0, list);
mContext = context;
inflater = LayoutInflater.from(context);
this.arraylist = list;
}
Your problem was that the getCount method tells the UI how many elements to draw. You must implement that in a BaseAdapter, but an ArrayAdapter does that for you
in your xmlcourse_activity.xml you have to initialize ListView
<ListView
android:id="#+id/listview1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
In listView you have to inflate your c_list_item.xml layout.
I hope it will work for you.
Related
I have an ArrayList<String> List which contains some items from the listview all_list. How can I select these items in the list view all_list programmatically by checking the ArrayList<String> List contents?
for e.g., listview all_list contains [0] apple
[1] orange
[2] banana
In ArrayList<String> List, I have orange so I want item on position 1 on the listview all_list to be selected (highlighted) automatically.
I have tried using all_list.setItemChecked(), but it does nothing and shuts down the application. I am performing the operation after listing the adapter.
set an onItemClickListener to the listview such that on click, you set a boolean flag that sets the checkbox in each row to selected. then call notifyDataSetChanged()
Try this
MainActivity.java
package com.example.multiseekbar;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
public class MainActivity extends Activity {
ListView listView1;
ArrayList<ModelClass> modelClass = new ArrayList<ModelClass>();
FruitSelectAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
modelClass.add(new ModelClass("Orange", true));
modelClass.add(new ModelClass("Apple", false));
modelClass.add(new ModelClass("Banana", false));
modelClass.add(new ModelClass("Grapes", false));
listView1 = (ListView) findViewById(R.id.listView1);
adapter = new FruitSelectAdapter(MainActivity.this, modelClass);
listView1.setAdapter(adapter);
listView1.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
if(modelClass.get(arg2).isSelected()){
modelClass.get(arg2).setSelected(false);
}else{
modelClass.get(arg2).setSelected(true);
}
adapter.notifyDataSetChanged();
}
});
}
}
activity_main.xml
<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"
tools:context="com.example.multiseekbar.MainActivity" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
>
</ListView>
</RelativeLayout>
FruitSelectAdapter.java
package com.example.multiseekbar;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.TextView;
public class FruitSelectAdapter extends BaseAdapter
{
private Activity activity;
private LayoutInflater inflater;
private ArrayList<ModelClass> modelClass=null;
public FruitSelectAdapter(Activity activity, ArrayList<ModelClass> modelClass) {
this.activity = activity;
this.modelClass = modelClass;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return modelClass.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return modelClass.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder holder;
if (inflater == null)
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
holder =new ViewHolder();
convertView = inflater.inflate(R.layout.row1, null);
holder.txtFruitName = (TextView)convertView.findViewById(R.id.txtFruitName);
holder.cbFruitSelectStatus = (CheckBox)convertView.findViewById(R.id.cbFruitSelectStatus);
holder.linLayBackground = (LinearLayout) convertView.findViewById(R.id.linLayBackground);
convertView.setTag(holder);
}else{
holder = (ViewHolder)convertView.getTag();
}
holder.txtFruitName.setText(modelClass.get(position).getFruitName());
holder.cbFruitSelectStatus.setChecked(modelClass.get(position).isSelected());
if(modelClass.get(position).isSelected()){
holder.linLayBackground.setBackgroundColor(Color.parseColor("#80ccff"));
}else{
holder.linLayBackground.setBackgroundColor(Color.parseColor("#FFFFFF"));
}
return convertView;
}
class ViewHolder{
TextView txtFruitName;
CheckBox cbFruitSelectStatus;
LinearLayout linLayBackground;
}
}
row1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:id="#+id/linLayBackground"
android:layout_height="70dp"
android:orientation="horizontal"
>
<TextView
android:id="#+id/txtFruitName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Fruit name"
android:layout_weight="1"
android:textSize="16sp"
android:textColor="#000000" />
<CheckBox
android:id="#+id/cbFruitSelectStatus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false" />
</LinearLayout>
ModelClass.java
package com.example.multiseekbar;
public class ModelClass {
String fruitName;
boolean isSelected=false;
public ModelClass(String fruitName, boolean isSelected) {
this.fruitName = fruitName;
this.isSelected = isSelected;
}
public String getFruitName() {
return fruitName;
}
public void setFruitName(String fruitName) {
this.fruitName = fruitName;
}
public boolean isSelected() {
return isSelected;
}
public void setSelected(boolean isSelected) {
this.isSelected = isSelected;
}
}
In my app I have 3 views
ImagiveView
TextView
Button
ImagView displays image accordingly, TextView and Button display names and number accordingly. But the problem is when I click on the button it does not call to the number which is displaying on the button. Although it does open the android caller app.
Telephone numbers are in string.xml file.
Here I provide my all files. Please help me
strings.xml
<string-array name="names">
<item>Abdul Malik</item>
<item>Adeel ur Rehman</item>
<item>Asad Majeeb</item>
<item>Ata ul Salam</item>
<item>Atta ul Qadir</item>
<item>Bilal Scunder</item>
<item>Chaudry Adnan Ahmed</item>
<item>Chaudry Imran</item>
<item>Ejaz Ahmed Saroya</item>
<item>Hamid Joya</item>
</string-array>
<string-array name="telephones">
<item>0000000000</item>
<item>0486607636</item>
<item>0485256515</item>
<item>0485128196</item>
<item>0465922084</item>
<item>0487150005</item>
<item>0488627993</item>
<item>0484783792</item>
<item>0484688663</item>
<item>0497697050</item>
</string-array>
MainActivity.xml
package com.example.android.listview_with_custom_layout;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.ListView;
public class MainActivity extends ActionBarActivity {
ListView listView;
int [] movie_poster_resource={
R.drawable.movie_1,
R.drawable.movie_2,
R.drawable.movie_3,
R.drawable.movie_4,
R.drawable.movie_5,
R.drawable.movie_6,
R.drawable.movie_7,
R.drawable.movie_8,
R.drawable.movie_9,
R.drawable.movie_10,
};
String [] names ={};
String [] telephones ={};
MoviesAdapter moviesAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView=(ListView) findViewById(R.id.list_view);
telephones =getResources().getStringArray(R.array.telephones);
names =getResources().getStringArray(R.array.names);
int i=0;
moviesAdapter= new MoviesAdapter(getApplicationContext(),R.layout.row_layout);
listView.setAdapter(moviesAdapter);
for(String titles: names){
MovieDataProvider movieDataProvider= new MovieDataProvider(movie_poster_resource[i], titles, telephones[i]);
moviesAdapter.add(movieDataProvider);
i++;
}
}
}
MoviesDataAdapter
package com.example.android.listview_with_custom_layout;
/**
* Created by temp on 2/11/2015.
*/
public class MovieDataProvider {
private int movie_poster_resource;
private String movie_title;
private String telePhone;
public MovieDataProvider(int movie_poster_resource, String movie_title, String telePhone) {
this.setMovie_poster_resource(movie_poster_resource);
this.setMovie_title(movie_title);
this.telePhone = telePhone;
}
public int getMovie_poster_resource() {
return movie_poster_resource;
}
public String getMovie_title() {
return movie_title;
}
public String getTelePhone() {
return telePhone;
}
public void setMovie_poster_resource(int movie_poster_resource) {
this.movie_poster_resource = movie_poster_resource;
}
public void setMovie_title(String movie_title) {
this.movie_title = movie_title;
}
public void setTelePhone(String telePhone) {
this.telePhone = telePhone;
}
}
MoviesAdapter
package com.example.android.listview_with_custom_layout;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
/**
* Created by temp on 2/11/2015.
*/
public class MoviesAdapter extends ArrayAdapter {
List list = new ArrayList();
MovieDataProvider dataProvider;
public MoviesAdapter(Context context, int resource) {
super(context, resource);
}
static class DataHandler {
ImageView Poster;
TextView title;
Button telePhone;
}
#Override
public void add(Object object) {
super.add(object);
list.add(object);
}
#Override
public int getCount() {
return this.list.size();
}
#Override
public Object getItem(int position) {
return this.list.get(position);
}
#Override
public View getView(int position, View convertView, final ViewGroup parent) {
View row;
row = convertView;
DataHandler handler;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.row_layout, parent, false);
handler = new DataHandler();
handler.Poster = (ImageView) row.findViewById(R.id.movie_poster);
handler.title = (TextView) row.findViewById(R.id.movie_title);
handler.telePhone = (Button) row.findViewById(R.id.btn_call);
row.setTag(handler);
} else {
handler = (DataHandler) row.getTag();
}
dataProvider = (MovieDataProvider) this.getItem(position);
handler.Poster.setImageResource(dataProvider.getMovie_poster_resource());
handler.title.setText(dataProvider.getMovie_title());
handler.telePhone.setText(dataProvider.getTelePhone());
handler.telePhone.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Intent to launch phone dialer
Intent intent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:" + dataProvider.getTelePhone()));
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
getContext().startActivity(intent);
}
});
return row;
}
}
activity_main.xml
<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:background="#ffffd953"
tools:context=".MainActivity">
<ListView
android:id="#+id/list_view"
android:layout_width="match_parent"
android:layout_height="match_parent">
</ListView>
</LinearLayout>
row_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#000000"
android:orientation="vertical"
android:paddingTop="10dp">
<ImageView
android:id="#+id/movie_poster"
android:layout_width="100dp"
android:layout_height="75dp"
android:layout_alignParentLeft="true"
android:src="#drawable/movie_1" />
<TextView
android:id="#+id/movie_title"
android:layout_width="100dp"
android:layout_height="75dp"
android:layout_toRightOf="#+id/movie_poster"
android:gravity="center"
android:text="This is movie name"
android:textColor="#FFFFFF" />
<Button
android:id="#+id/btn_call"
android:layout_width="wrap_content"
android:layout_height="75dp"
android:layout_alignParentRight="true"
android:layout_toRightOf="#+id/movie_title"
android:gravity="center"
android:text="call"
android:textColor="#FFFF" />
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_below="#+id/movie_poster"
android:background="#FFFF"></View>
</RelativeLayout>
you forgot to initialize the telephones string in your MainActivity, do same as you did for movie_poster_resource after this it should work, and dont forgot to add permission
<uses-permission android:name="android.permission.CALL_PHONE"></uses-permission>
and last you can update the button click code with
Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse("tel:"+dataProvider.getTelePhone()));
startActivity(callIntent);
and update your AdapterClass with this
public class MoviesAdapter extends ArrayAdapter {
List list = new ArrayList();
public MoviesAdapter(Context context, int resource) {
super(context, resource);
}
static class DataHandler {
ImageView Poster;
TextView title;
Button telePhone;
}
#Override
public void add(Object object) {
super.add(object);
list.add(object);
}
#Override
public int getCount() {
return this.list.size();
}
#Override
public Object getItem(int position) {
return this.list.get(position);
}
#Override
public View getView(int position, View convertView, final ViewGroup parent) {
View row;
row = convertView;
final MovieDataProvider dataProvider = (MovieDataProvider) this.getItem(position);;
DataHandler handler;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.row_layout, parent, false);
handler = new DataHandler();
handler.Poster = (ImageView) row.findViewById(R.id.movie_poster);
handler.title = (TextView) row.findViewById(R.id.movie_title);
handler.telePhone = (Button) row.findViewById(R.id.btn_call);
} else {
handler = (DataHandler) row.getTag();
}
handler.Poster.setImageResource(dataProvider.getMovie_poster_resource());
handler.title.setText(dataProvider.getMovie_title());
handler.telePhone.setText(dataProvider.getTelePhone());
handler.telePhone.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:" + dataProvider.getTelePhone()));
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
getContext().startActivity(intent);
}
});
row.setTag(handler);
return row;
}
}
I have dynamic CheckBoxes and now I want to check which CheckBox clicked or not
AdditionalInformation.Java File Here Simple Adapter is defined :
package com.example.ahmad.cvbuilder21;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class AdditionalInformation extends ActionBarActivity {
CheckBox cb;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_additional_infromation);
cb=(CheckBox)findViewById(R.id.additionalchk);
ABC s = ABC.getSingletonObject();
String[][] str = s.getString();
ListView lv=((ListView)findViewById(R.id.additionallist));
String[] additionalOptions={"Add your Picture","Add Experince / Project","Add Reference","Add Skills / Languages"};
String[] txtViewNames={"options"};
List<HashMap<String,String>>list=new ArrayList<HashMap<String, String>>();
for (int i = 0; i < additionalOptions.length; i++) {
HashMap<String, String> map= new HashMap<String, String>();
map.put("options", additionalOptions[i]);
list.add(map);
}
SimpleAdapter simpleAdpt = new SimpleAdapter(this, list, R.layout.mylayout2,txtViewNames , new int[] {R.id.additionaltxt1});
lv.setAdapter(simpleAdpt);
}
public void additionalData(View view1)
{
if(cb.isChecked())
{
cb.findViewById(R.id.additionalchk).setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View view)
{
Toast toast = Toast.makeText(getApplicationContext(), "Checked",
Toast.LENGTH_SHORT);
toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);
toast.show();
}
}
);
}
else{}
}
}
AdditionalInformation.xml file: where additionalData function is called to
check which CheckBox clicked.
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Choose Additional Options:"
android:id="#+id/additionalBtn"
/>
<ListView
android:layout_below="#id/additionalBtn"
android:layout_centerHorizontal="true"
android:id="#+id/additionallist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"></ListView>
<Button
android:layout_below="#id/additionallist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add to CV"
android:onClick="additionalData"
/>
</RelativeLayout>
mylayout2.xml file where I define the controls for simple adapter:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:layout_alignParentLeft="true"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/additionaltxt1"
/>
<CheckBox
android:layout_alignParentRight="true"
android:layout_alignRight="#id/additionaltxt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="false"
android:id="#+id/additionalchk"
/>
</RelativeLayout>
What you actually need to do is create a custom adapter. In that custom you could listen for checkbox event at the right position.
Here is an example:
public class ListEmployeesAdapter extends BaseAdapter {
public List<Employees> items;
Context c;
public ListEmployeesAdapter(Context c, List<Employees> items) {
this.c = c;
this.items = items;
}
#Override
public int getCount() {
return items.size();
}
#Override
public Object getItem(int position) {
return items.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater mInflater = (LayoutInflater)
c.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.employee_item, null);
}
TextView name = (TextView) convertView.findViewById(R.id.name);
name.setText(items.get(position).name);
name.setOnCLickListener(new OnClickListener(){
#Override
public void onClick(){
//listen to the click
}
});
return convertView;
}
}
Just replace the the layout with you layout and call checkbox instead of TextView and you are good to go.
I am trying to display a custom listview but nothing appears.
My activity:
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import com.example.elnoorgeh.ServerAPI;
import android.app.Fragment;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView.FindListener;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
public class BlogFragment extends Fragment {
JSONArray jArray;
TextView title;
RelativeLayout layout;
int previousID = 0;
int currentID = 0;
ArrayList<String> titles;
ArrayList<String> contents;
ListView list;
public BlogFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_blog, container,
false);
new AsyncFetch().execute();
return rootView;
}
private class AsyncFetch extends AsyncTask<Object, Object, Object> {
#Override
protected Object doInBackground(Object... params) {
// TODO Auto-generated method stub
jArray = new JSONArray();
jArray = ServerAPI.getData();
titles = new ArrayList<String>();
contents = new ArrayList<String>();
for (int i = 0; i < jArray.length(); i++) {
String blogTitle = null;
String content = null;
try {
blogTitle = jArray.getJSONObject(i).getString("title");
content = jArray.getJSONObject(i).getString("content");
titles.add(blogTitle);
contents.add(content);
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println(blogTitle);
System.out.println(content);
}
// display(titles, contents);
return null;
}
protected void onPostExecute(Object result) {
layout = (RelativeLayout) getView().findViewById(R.id.blogPage);
layout.removeAllViews();
CustomList adapter = new CustomList(getActivity(), titles);
list = new ListView(getActivity());
System.out.println("list done");
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(getActivity(),
"You Clicked at " + titles.get(position),
Toast.LENGTH_SHORT).show();
}
});
}
}
public void display(ArrayList<String> t, ArrayList<String> c) {
}
}
Custom ListView class:
import java.util.ArrayList;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomList extends ArrayAdapter<String> {
private final Activity context;
private final ArrayList<String> web;
// private final Integer[] imageId;
public CustomList(Activity context, ArrayList<String>web) {
super(context, R.layout.fragment_listview);
this.context = context;
this.web = web;
// this.imageId = imageId;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.fragment_listview, null, true);
TextView txtTitle = (TextView) rowView.findViewById(R.id.txt);
ImageView imageView = (ImageView) rowView.findViewById(R.id.img);
txtTitle.setText((CharSequence) web.get(position));
// imageView.setImageResource(imageId[position]);
return rowView;
}
}
fragment_blog:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/blogPage"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
<TextView
android:id="#+id/txtLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:maxLines="20"
android:singleLine="false"
android:textSize="16dp" />
</RelativeLayout>
fragment_listview:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TableRow>
<ImageView
android:id="#+id/img"
android:layout_width="50dp"
android:layout_height="50dp" />
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="50dp" />
</TableRow>
</TableLayout>
I can't find any errors or notice something irregular, so why is that happening?
you should extend BaseAdapter and implement abstract methods
#Override
public int getCount() {
return web.size();
}
#Override
public Object getItem(int position) {
return web.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
also you might change
txtTitle.setText((CharSequence) web.get(position));
to
txtTitle.setText((CharSequence) getItem(position));
now your adapter don't know size of web array
edit:
you can get one inflater in constructor and keep in class, no need to getting inflater each time (little bit better for perfomance)
LayoutInflater inflater = context.getLayoutInflater();
edit 2:
localhost put proper comment - you are removing all Views from RelativeLayout, also ListView, and creating new ListView without adding to Relative. keeping reference will not auto-add View
protected void onPostExecute(Object result) {
layout = (RelativeLayout) getView().findViewById(R.id.blogPage);
layout.removeView(getView().findViewById(R.id.txtLabel);
//assuming you need to remove only txtLabel
CustomList adapter = new CustomList(getActivity(), titles);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(getActivity(),
"You Clicked at " + titles.get(position),
Toast.LENGTH_SHORT).show();
}
});
}
my app has custom ListView, each row contains checkbox ,edit text and 2 buttons. In the main xml layout file i have 1 submit button and listView. i want that, when i click on submit button, i should get all checked row position.I am new to android programming ,so plz help me my code is not working here is my code:
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button android:layout_height="wrap_content"
android:text="#string/button_submit"
android:layout_width="wrap_content"
android:id="#+id/main_submit_button" android:onClick="#string/button_submit"></Button>
<ListView
android:id="#+id/list_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
items.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout android:layout_height="wrap_content"
android:layout_width="fill_parent">
<TextView
android:layout_height="wrap_content"
android:layout_width="fill_parent" android:layout_weight="1"
android:id="#+id/items_name"
android:gravity="left"
android:textStyle="bold" />
<CheckBox android:id="#+id/items_check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="right"
/>
</LinearLayout>
<LinearLayout android:layout_height="wrap_content"
android:layout_width="fill_parent">
<Button android:id="#+id/items_add_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:text="#string/text_switcher_plus" />
<EditText android:digits="10"
android:textStyle="bold" android:gravity="left"
android:id="#+id/items_plates" android:layout_height="wrap_content"
android:layout_width="90dp"></EditText>
<Button android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/items_minus_button"
android:text="#string/text_switcher_minus"
android:gravity="right"
/>
</LinearLayout>
</LinearLayout>
VegmenuActivity
package com.sagar.resmenu;
import java.util.ArrayList;
import java.util.Arrays;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
// reference:http://pareshnmayani.wordpress.com/tag/android-custom-listview-example
public class VegmenuActivity extends Activity implements OnItemClickListener{
//dynamic array that contains names of items
private ArrayList<String> items = new ArrayList<String>
(Arrays.asList("Veg pulav", "Pav bhaji", "Panir tikka", "veg kolhapuri",
"Coconut Rice", "Curd rice", "Mint Pulao",
"Banana Custard","Basundi", "Cheese potato Tikkis",
"Dum aloo"));
private ArrayList<Integer> counter = new ArrayList<Integer>
(Arrays.asList(0, 0,0, 0, 0,0, 0,0, 0,0,0));
private SparseBooleanArray a;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final ListView lv =(ListView)findViewById(R.id.list_view);
// lv.setOnClickListener(null);
MyAdapter adapter = new MyAdapter(getApplicationContext(),items,counter);
lv.setAdapter(adapter);
lv.setItemsCanFocus(false);
lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
Button submit1;
submit1 = (Button)findViewById(R.id.main_submit_button);
submit1.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
a = new SparseBooleanArray();
a.clear();
a = lv.getCheckedItemPositions();
int len = items.size();
for (int i = 0; i < len; i++)
{
if(a.valueAt(i) == true)
Log.d("Returned ", String.valueOf(a.valueAt(i)));
}
}
});
}
//private OnItemClickListener selectCat = new OnItemClickListener();
public void onItemClick(AdapterView<?> a, View v, int positon, long id) {
// TODO Auto-generated method stub
}
}
MyAdapter.java
package com.sagar.resmenu;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextSwitcher;
import android.widget.TextView;
public class MyAdapter extends BaseAdapter implements OnClickListener{
private LayoutInflater inflater;
private ArrayList<String> data;
VegmenuActivity m;
private ArrayList<Integer> counter;
public MyAdapter(Context context, ArrayList<String> data,ArrayList<Integer> counter) {
// TODO Auto-generated constructor stub
super();
// Caches the LayoutInflater for quicker use
this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// Sets the events data
this.data= data;
this.counter=counter;
}
public int getCount() {
return this.data.size();
//return this.counter.size();
}
public String getItem(int position) throws IndexOutOfBoundsException{
return null;
}
public long getItemId(int position) throws IndexOutOfBoundsException{
return 0;
}
public int getViewTypeCount(){
return 1;
}
public static class ViewHolder
{
TextView items_name;
CheckBox items_check ;
Button items_plus_button;
Button items_minus_button;
EditText plates;
}
public View getView(int position, View convertView, ViewGroup parent){
//String myText = getItem(position);
ViewHolder holder;
if(convertView == null){ // If the View is not cached
// Inflates the Common View from XML file
holder = new ViewHolder();
convertView = this.inflater.inflate(R.layout.items,parent,false);
holder.items_name = (TextView) convertView.findViewById(R.id.items_name);
holder.plates = (EditText) convertView.findViewById(R.id.items_plates);
holder.items_check = (CheckBox) convertView.findViewById(R.id.items_check);
convertView.setTag(holder);
}
else
holder=(ViewHolder)convertView.getTag();
holder.items_name.setText(data.get(position));
holder.plates.setText(String.valueOf(counter.get(position)));
return convertView;
}
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
}
when I need check boxes inside listview, I often code as following:
MyAdapter.java:
- Declare an boolean array to mark which item is checked/unchecked:
....
boolean[] checked;
...
inside constructor:
checked = new boolean[data.size()];
- Inside getView()
{
.....
holder.items_check.setChecked(checked[position]);
holder.items_check.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
checked[position] = isChecked;
}
});
.....
- And method to get all checked items:
boolean[] getCheckedItems() {
return checked;
}
That's !
Could it be that your getItem and getItemId only return null and 1? These methods need to return the correct data for this to work I believe. getItem would need to be:
String getItem(int position)
{
return data.get(position);
}
and getItemId would simply return position instead of 0:
String getItemId(int position)
{
return position;
}