Custom ListAdapter not working

Custom ListAdapter not working - android

I am trying to show some data in a ListView.
I created my own Adapter but it doesn't seem to be working.
I put a break point inside the method "getView(..)" but it never reached it.
I am probably missing something simple but can't figure it out.
package mpg.scoreControl;
import java.util.ArrayList;
import mpg.playerControl.MPGPlayer;
import mpg.playerControl.MPGPlayerControl;
import multiplayerGameControl.pkg.R;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.SlidingDrawer;
import android.widget.ListView;
import android.widget.TextView;
public class MPGGameScore {
ArrayList<MPGGameScoreEntry> scores;
protected class MPGGameScoreEntry{
public String playerName;
public int playerScore;
public MPGGameScoreEntry(String playerName, int playerScore) {
this.playerName = playerName;
this.playerScore = playerScore;
}
}
private class GameScoreAdaptor extends BaseAdapter{
private LayoutInflater mInflater;
public GameScoreAdaptor(Context context) {
// searchArrayList = results;
mInflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 0;
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.playerscoresrow, null);
holder = new ViewHolder();
holder.tvwPlayerName = (TextView) convertView.findViewById(R.id.tvwPlayerName);
holder.tvwPlayerScore = (TextView) convertView.findViewById(R.id.tvwPlayerScore);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tvwPlayerName.setText(scores.get(position).playerName);
holder.tvwPlayerScore.setText(scores.get(position).playerScore);
return convertView;
}
}
static class ViewHolder {
TextView tvwPlayerName;
TextView tvwPlayerScore;
}
public void showCurrentScores(final Activity context, SlidingDrawer sd){
ListView lvwScores = (ListView) sd.findViewById(R.id.lvwScores);
// Build arraylist with scores.
scores = new ArrayList<MPGGameScoreEntry>();
// Now fill it up with rows
for (MPGPlayer player: MPGPlayerControl.getInstance().players)
scores.add(new MPGGameScoreEntry(player.playerName,player.playerDetails.playerScore.getScoreInt()));
lvwScores.setAdapter(new GameScoreAdaptor(context));
}
}
score_drawer:
<?xml version="1.0" encoding="utf-8"?>
<SlidingDrawer android:id="#+id/slidingDrawer" android:handle="#+id/drawerHandle"
xmlns:android="http://schemas.android.com/apk/res/android"
android:content="#+id/contentLayout" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_alignParentBottom="true"
android:visibility="visible">
<ImageView android:id="#+id/drawerHandle"
android:src="#drawable/blue_arrow_up_flat"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</ImageView>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/contentLayout" android:gravity="center"
android:layout_width="fill_parent" android:layout_height="wrap_content">
<ListView
android:id="#+id/lvwScores"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:divider="#FFFFFF" android:dividerHeight="1dip"
android:layout_weight="1" android:layout_marginBottom="60dip"
android:footerDividersEnabled="true" android:headerDividersEnabled ="true"/>
</LinearLayout>
</SlidingDrawer>
playerscorerow:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal">
<TextView android:id="#+id/tvwPlayerName" android:layout_weight="1" android:gravity="left"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_alignParentLeft="true"/>
<TextView android:id="#+id/tvwPlayerScore" android:layout_weight="1" android:gravity="right"
android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginRight="12sp"
android:layout_alignParentRight="true"/>
</RelativeLayout>

You can't return 0 in the getCount() method because this will tell your adapter that you don't have any elements in the adapter:
#Override
public int getCount() {
return 24 ; // I just put a number here,if you plan to use the scores ArrayList as the data
// of the adapter you should return here scores.size();
}

Your adapter seems to be based on your scores list..so you do something like this:
#Override
public int getCount() {
return scores.size();
}
#Override
public Object getItem(int position) {
scores.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
BTW: The member variables (playerName & playerScore) of the Adapter class are probably not neccessay?!

Related

android studio: Android scrollable gridview with clickable buttons leading to different activities

am creating an android application whereby am required to create a gridview with clickable image buttons each leading to a different activities.Also the gridview should be scrollable since i have many buttons to add .Can anyone help on how to do this? thank you.
Here is a sample of what am trying to do:
sample clickable gridview:

activitymain.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"
android:orientation="vertical"
tools:context=".MainActivity" >
<GridView
android:id="#+id/gridView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/textView1"
android:numColumns="3" >
</GridView>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25dp"
android:textStyle="bold"
android:text=" Computer Languages..." />
</RelativeLayout>
programlist.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" >
<ImageView
android:id="#+id/imageView1"
android:layout_gravity="center"
android:layout_width="88dp"
android:layout_height="88dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView1"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="15dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:text="TextView" />
</LinearLayout>
In MainActivity.java
package com.gnetspace.simplegridview;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.widget.AdapterView;
import android.widget.GridView;
public class MainActivity extends Activity {
GridView gv;
Context context;
ArrayList prgmName;
public static String [] prgmNameList={"Let Us C","c++","JAVA","Jsp","Microsoft .Net","Android","PHP","Jquery","JavaScript"};
public static int [] prgmImages={R.drawable.images,R.drawable.images1,R.drawable.images2,R.drawable.images3,R.drawable.images4,R.drawable.images5,R.drawable.images6,R.drawable.images7,R.drawable.images8};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gv=(GridView) findViewById(R.id.gridView1);
gv.setAdapter(new CustomAdapter(this, prgmNameList,prgmImages));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Create a folder by name drawable in res directory.
public static int [] prgmImages={R.drawable.images,R.drawable.images1,R.drawable.images2,R.drawable.images3,R.drawable.images4,R.drawable.images5,R.drawable.images6,R.drawable.images7,R.drawable.images8};
Create CustomAdapter and paste the following code.
package com.gnetspace.simplegridview;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class CustomAdapter extends BaseAdapter{
String [] result;
Context context;
int [] imageId;
private static LayoutInflater inflater=null;
public CustomAdapter(MainActivity mainActivity, String[] prgmNameList, int[] prgmImages) {
// TODO Auto-generated constructor stub
result=prgmNameList;
context=mainActivity;
imageId=prgmImages;
inflater = ( LayoutInflater )context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return result.length;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public class Holder
{
TextView tv;
ImageView img;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.program_list, null);
holder.tv=(TextView) rowView.findViewById(R.id.textView1);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.tv.setText(result[position]);
holder.img.setImageResource(imageId[position]);
rowView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(context, "You Clicked "+result[position], Toast.LENGTH_LONG).show();
}
});
return rowView;
}
}
the source link is caveofprograming

listview inflated with list of Text, editText and Button using BaseAdapter

I have listview inflated with list of TextView, editText and Button using BaseAdapter. When I populate this listview with ArrayList, the textView has correct string but When I put entry on EditText same value gets repeated on alternate 6th row. I have onclick event listener to show corresponding values in object and EditView, but it shows random objects.
public void RemoveItemFromOrder(View v){
MenuItemsAdapter.ViewHolder holder = (MenuItemsAdapter.ViewHolder)v.getTag();
int quantity = Integer.parseInt(holder.getEditNumber().getText().toString());
//Toast.makeText(getApplicationContext(), item.getItem(),Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(), holder.getMenus().getItem()+" "+quantity, Toast.LENGTH_SHORT).show();
}
The menulist
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<TextView
android:id="#+id/txtMenu"
android:layout_width="0sp"
android:layout_height="fill_parent"
android:layout_weight="3"
android:gravity="center_vertical"
android:text="Chaunim momo item"
android:textAppearance="?android:attr/textAppearanceSmall" />
<EditText
android:id="#+id/editQty"
android:saveEnabled="false"
android:layout_width="0sp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:inputType="numberDecimal"
android:hint="Qty"
android:textAppearance="?android:attr/textAppearanceSmall" />
<ImageButton
android:id="#+id/butDel"
android:layout_width="#dimen/width_button"
android:layout_height="fill_parent"
android:contentDescription="Delete"
android:onClick="RemoveItemFromOrder"
android:src="#android:drawable/ic_menu_delete" />
The main activity layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.sandip.gre.meromenu.Menu">
<include
android:id="#+id/app_bar"
layout="#layout/menutoolbar" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="30dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Table: "
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="30dp" />
<Spinner
android:id="#+id/spinnerTable"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/dummylayout"
android:textAlignment="center"
android:textSize="30dp"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:id="#+id/listOrders"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/dummylayout"
android:paddingLeft="20dp"
/>
<ListView
android:id="#+id/listMenu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/app_bar"
android:divider="#f6b2b2"
android:dividerHeight="1dp"
android:paddingStart="10dp"
android:paddingLeft="10dp"
android:paddingRight="2dp"
android:paddingEnd="2dp"/>
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_below="#id/listMenu"
android:layout_marginTop="50dp"
android:text="Place Order" />
</LinearLayout>
</LinearLayout>
The adapter Class:
package com.example.sandip.gre.meromenu.database;
import android.app.Activity;
import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import com.example.sandip.gre.meromenu.R;
import java.util.ArrayList;
public class MenuItemsAdapter extends BaseAdapter{
private Context context;
private ArrayList<Menus> menuItems;
public MenuItemsAdapter(Context context, ArrayList<Menus> menuItems){
this.context = context;
this.menuItems = menuItems; }
public class ViewHolder{
Menus menus;
TextView txtOrder;
ImageButton butCancel;
EditText editNumber;
public TextView getTxtOrder() {
return txtOrder;
}
public Menus getMenus() {
return menus;
}
public EditText getEditNumber() {
return editNumber;
}
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return menuItems.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return menuItems.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder holder = null;
LayoutInflater mInflater = ((Activity) context).getLayoutInflater();
if (convertView == null) {
convertView = mInflater.inflate(R.layout.menulist, parent, false);
holder = new ViewHolder();
TextView txtOrder;
Button butCancel;
EditText editNumber;
holder.menus = menuItems.get(position);
holder.txtOrder = (TextView) convertView.findViewById(R.id.txtMenu);
holder.butCancel = (ImageButton) convertView.findViewById(R.id.butDel);
//holder.butCancel.setTag(holder.menus);
holder.butCancel.setTag(holder);
holder.editNumber = (EditText) convertView.findViewById(R.id.editQty);
setValueTextListeners(holder);
convertView.setTag(holder);
}
else{
holder = (ViewHolder) convertView.getTag();
}
holder.txtOrder.setText(menuItems.get(position).getItem());
return convertView;
}
//if we have to instantly change data during data change in editText use
private void setValueTextListeners(final ViewHolder holder) {
holder.editNumber.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
try {
//holder.menus.setValue(Double.parseDouble(s.toString()));
} catch (NumberFormatException e) {
Log.e("Error", "error reading double value: " + s.toString());
}
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void afterTextChanged(Editable s) {
}
});
}
}

I also stuck in this problem, the issue may be in your base adapter class, use the below adapter,
package com.example.sandip.gre.meromenu.database;
import android.app.Activity;
import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import com.example.sandip.gre.meromenu.R;
import java.util.ArrayList;
public class MenuItemsAdapter extends BaseAdapter{
private Context context;
private ArrayList<Menus> menuItems;
public MenuItemsAdapter(Context context, ArrayList<Menus> menuItems){
this.context = context;
this.menuItems = menuItems;
mInflater = ((Activity) context).getLayoutInflater();
}
public class ViewHolder{
Menus menus;
TextView txtOrder;
ImageButton butCancel;
EditText editNumber;
public TextView getTxtOrder() {
return txtOrder;
}
public Menus getMenus() {
return menus;
}
public EditText getEditNumber() {
return editNumber;
}
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return menuItems.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return menuItems.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
LayoutInflater mInflater;
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.menulist, parent, false);
}
holder = new ViewHolder();
TextView txtOrder;
Button butCancel;
EditText editNumber;
holder.menus = menuItems.get(position);
holder.txtOrder = (TextView) convertView.findViewById(R.id.txtMenu);
holder.butCancel = (ImageButton) convertView.findViewById(R.id.butDel);
//holder.butCancel.setTag(holder.menus);
holder.butCancel.setTag(holder);
holder.editNumber = (EditText) convertView.findViewById(R.id.editQty);
setValueTextListeners(holder);
holder.txtOrder.setText(menuItems.get(position).getItem());
return convertView;
}
//if we have to instantly change data during data change in editText use
private void setValueTextListeners(final ViewHolder holder) {
holder.editNumber.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
try {
//holder.menus.setValue(Double.parseDouble(s.toString()));
} catch (NumberFormatException e) {
Log.e("Error", "error reading double value: " + s.toString());
}
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void afterTextChanged(Editable s) {
}
});
}
}
One more thing, I think you don't need the ViewHolder...!

Android listview behaving randomly

I am facing problem with listview i-e i am inflating some view on ListViewItem in runtime which results in increase in the ListView Row,i-e some rows in listview have different heights and others have different which is giving wrong getView position.
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.app.Activity;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView listView = (ListView) findViewById(R.id.listView1);
TestAdapter adapter = new TestAdapter(this);
listView.setAdapter(adapter);
}
public void onClickAction(View v){
v.findViewById(R.id.l1).setVisibility(View.VISIBLE);
}
}
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
public class TestAdapter extends BaseAdapter {
private String[] items = {"a","b","c","d","e","f","g","h","i"};
private Context context;
public TestAdapter(Context context) {
this.context = context;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return items.length;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return items[position];
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
ViewHolder holder;
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
if(convertView == null){
convertView = LayoutInflater.from(context).inflate(R.layout.list_view_item, null);
holder = new ViewHolder();
holder.textView = (TextView) convertView.findViewById(R.id.textView1);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText("value = "+position);
return convertView;
}
static class ViewHolder{
TextView textView;
}
}
<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=".MainActivity" >
<ListView
android:id="#+id/listView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</ListView>
<?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"
android:id="#+id/mainLayout"
android:onClick="onClickAction"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<LinearLayout
android:id="#+id/l1"
android:layout_width="fill_parent"
android:layout_height="250dp"
android:layout_alignParentLeft="true"
android:layout_below="#+id/textView1"
android:visibility="gone"
android:background="#android:color/darker_gray"
android:orientation="vertical" >
</LinearLayout>
</RelativeLayout>

Android custom listview row

I'm struggling with assigning my listview row more than one textview.
I want my row to have one textview for a person's name, one for address and one for age - but I'm not succeeding in doing so.
If someone could provide me with a simple example, that would be great.
Thanks!
Here's my custom ArrayAdapter
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
public class MyAdapter extends BaseAdapter {
private LayoutInflater mInflater = null;
private ArrayList<Invoice> peopleList;
private final class ViewHolder {
TextView kidLabel;
TextView restLabel;
TextView fristLabel;
TextView amountLabel;
}
private ViewHolder mHolder = null;
public MyAdapter(Context context) {
Context mContext = context;
mInflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return peopleList.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
mHolder = new ViewHolder();
convertView = mInflater.inflate(R.layout.row, null);
convertView.setTag(mHolder);
} else {
mHolder = (ViewHolder) convertView.getTag();
}
mHolder.kidLabel = (TextView) convertView.findViewById(R.id.kidLabel);
mHolder.kidLabel.setText(peopleList.get(position).getKID());
mHolder.fristLabel = (TextView) convertView
.findViewById(R.id.fristLabel);
mHolder.fristLabel.setText(peopleList.get(position).getDueDate());
mHolder.restLabel = (TextView) convertView.findViewById(R.id.restLabel);
mHolder.restLabel.setText(peopleList.get(position).getDueAmount());
mHolder.amountLabel = (TextView) convertView
.findViewById(R.id.amountLabel);
mHolder.amountLabel.setText(peopleList.get(position).getDueAmount());
return convertView;
}
}
And Here's my custom row xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="45dip"
android:src="#drawable/cellback" android:scaleType="fitXY"/>
<TextView
android:id="#+id/kidLabel"
android:layout_width="160dip"
android:layout_height="25dip"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:textSize="13dip" android:textColor="#333"/>
<TextView
android:id="#+id/fristLabel"
android:layout_width="160dip"
android:layout_height="20dip"
android:layout_marginTop="25dip"
android:textSize="11dip" android:textColor="#999"/>
<TextView
android:id="#+id/amountLabel"
android:layout_width="160dip"
android:layout_height="25dip"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:textSize="13dip" android:layout_marginLeft="160dip" android:gravity="right" android:textColor="#333"/>
<TextView
android:id="#+id/restLabel"
android:layout_width="160dip"
android:layout_height="20dip"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:textSize="11dip" android:layout_marginLeft="160dip" android:layout_marginTop="25dip" android:gravity="right" android:textColor="#999"/>
</RelativeLayout>

First,you should create a xml to describe what your list cell likes,called cell.xml,for example:
<?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:background="#color/spink">
<TextView
android:id="#+id/name_textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/address_textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Address"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
Second,create a adapter.It helps your listview to show data:
public class MyAdapter extends BaseAdapter {
private LayoutInflater mInflater = null;
private ArrayList<People> peopleList;
private final class ViewHolder {
TextView nameTextView;
TextView addressTextView;
}
private ViewHolder mHolder = null;
public MyAdapter(Context context) {
mContext = context;
mInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return peopleList.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView == null) {
mHolder = new ViewHolder();
convertView = mInflater.inflate(R.layout.cell, null);
convertView.setTag(mHolder);
} else {
mHolder = (ViewHolder)convertView.getTag();
}
mHolder.nameTextView (TextView)convertView.findViewById(R.id.name_textView);
mHolder.nameTextView.setText(peopleList.get(position).getName());
mHolder.addressTextView = (TextView)convertView.findViewById(R.id.address_textView);
mHolder.addressTextView.setText(peopleList.get(position).getAddress());
return convertView;
}
}
Finally,when you want to show the data,do this in your activity:
listView.setAdapter(new MyAdapter());
hope it helps you.

You need to create a custom listview layout and a custom array adapter (I have also created a custom class to work with the layout).
An example of this is:
Custom class that works with the custom listview layout:
package id10778734.sceresini.week4.exercise3.views;
import id10778734.sceresini.week4.exercise3.R;
import id10778734.sceresini.week4.exercise3.Constants;
import id10778734.sceresini.week4.exercise3.tasks.Task;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
public class TaskListItem extends LinearLayout {
private Task mTask;
private ImageView mEmailImageView;
private ImageView mPriorityImageView;
private TextView mTaskNameTextView;
private TextView mTaskResponsibleTextView;
private ImageView mDeleteImageView;
public TaskListItem (Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
public void onFinishInflate() {
super.onFinishInflate();
mEmailImageView = (ImageView) findViewById(R.id.list_row_layout_email_button);
mPriorityImageView = (ImageView) findViewById(R.id.list_row_layout_priority_icon);
mTaskNameTextView = (TextView) findViewById(R.id.list_row_layout_task_name);
mTaskResponsibleTextView = (TextView) findViewById(R.id.list_row_layout_responsible);
mDeleteImageView = (ImageView) findViewById(R.id.list_row_layout_delete_button);
}
public void setTask (Task task) {
mTask = task;
mEmailImageView.setTag(task);
switch (task.getPriority()) {
case Constants.LOW:
mPriorityImageView.setImageResource(R.drawable.low);
break;
case Constants.MEDIUM:
mPriorityImageView.setImageResource(R.drawable.medium);
break;
case Constants.HIGH:
mPriorityImageView.setImageResource(R.drawable.high);
break;
}
mTaskNameTextView.setText(task.getName());
mTaskResponsibleTextView.setText(task.getResponsible());
mDeleteImageView.setTag(task);
}
public Task getTask () {
return mTask;
}
public ImageView getDeleteImageView () {
return mDeleteImageView;
}
public ImageView getEmailImageView () {
return mEmailImageView;
}
}
the custom layout xml file:
<?xml version="1.0" encoding="UTF-8"?>
<id10778734.sceresini.week4.exercise3.views.TaskListItem
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="5dip" >
<ImageView
android:id="#+id/list_row_layout_email_button"
android:layout_width="36dip"
android:layout_height="36dip"
android:layout_gravity="center_vertical"
android:layout_marginLeft="4dip"
android:layout_marginRight="5dip"
android:contentDescription="#string/list_row_email_icon_description"
android:src="#android:drawable/ic_dialog_email" />
<ImageView
android:id="#+id/list_row_layout_priority_icon"
android:layout_width="24dip"
android:layout_height="24dip"
android:layout_gravity="center_vertical"
android:layout_marginLeft="4dip"
android:layout_marginRight="10dip"
android:contentDescription="#string/view_task_priority_icon_description" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical" >
<TextView
android:id="#+id/list_row_layout_task_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/list_row_layout_responsible"
android:paddingRight="5dip"
android:textAppearance="#style/list_row_task_name" />
<TextView
android:id="#id/list_row_layout_responsible"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/list_row_layout_delete_button"
android:maxWidth="100dip"
android:textAppearance="#style/list_row_task_responsible" />
<ImageView
android:id="#id/list_row_layout_delete_button"
android:layout_width="36dip"
android:layout_height="36dip"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginLeft="5dip"
android:layout_marginRight="5dip"
android:contentDescription="#string/delete_task_icon_description"
android:src="#drawable/task_delete" />
</RelativeLayout>
</id10778734.sceresini.week4.exercise3.views.TaskListItem>
And the custom array adapter:
package id10778734.sceresini.week4.exercise3;
import id10778734.sceresini.week4.exercise3.R;
import id10778734.sceresini.week4.exercise3.tasks.Task;
import id10778734.sceresini.week4.exercise3.views.TaskListItem;
import java.util.ArrayList;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
public class TaskListAdapter extends BaseAdapter
{
private ArrayList<Task> mTasks;
private Context mContext;
private AlertDialog unsavedChangesDialog;
private TaskManagerApplication mApp;
public TaskListAdapter(Context context, ArrayList<Task> tasks) {
super();
mApp = (TaskManagerApplication) context.getApplicationContext();
mContext = context;
mTasks = tasks;
}
#Override
public int getCount()
{
return mTasks.size();
}
#Override
public Task getItem(int position)
{
return (null == mTasks) ? null : mTasks.get(position);
}
#Override
public long getItemId(int position)
{
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
TaskListItem tli;
if (null == convertView)
{
tli = (TaskListItem) View.inflate(mContext, R.layout.list_row_layout, null);
} else
{
tli = (TaskListItem) convertView;
}
tli.setTask(mTasks.get(position));
tli.getEmailImageView().setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v)
{
emailTask(v);
}
});
tli.getDeleteImageView().setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v)
{
deleteTask(v);
}
});
return tli;
}
/**
* deleteTask() prompts the user with an alert dialog and presents them with
* the option to continue with the delete request or to cancel the request.
* Upon confirmation, the selected Task object which is retrieved from the
* deleteTaskIcon tag, will be removed from the list of currentTasks.
*
* #param v
*/
protected void deleteTask(View v)
{
final Task t = (Task) v.getTag();
String alertMessage = String.format(mContext.getString(R.string.delete_task_message), t.getName());
unsavedChangesDialog = new AlertDialog.Builder(mContext).setTitle(R.string.delete_task_title).setMessage(alertMessage)
// Delete the task and refresh the adapter.
.setPositiveButton(R.string.delete_task_delete, new AlertDialog.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1)
{
// Remove task from array list
mTasks.remove(t);
// Remove task from Database
mApp.deleteTask(t);
// Display toast message stating the task was deleted
mApp.displayToast(Constants.TASK_DELETED);
// Update listView with modified adapter
forceReload();
}
})
// Cancel the delete request and do nothing.
.setNegativeButton(R.string.delete_task_cancel, new AlertDialog.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1)
{
unsavedChangesDialog.cancel();
}
}).create();
unsavedChangesDialog.show();
}
/**
* emailTask() populates the selected task into an intent which allows the
* user to select a client to send the task. This is formatted for email
* clients.
*
* #param v
*/
protected void emailTask(View v)
{
// Retrieve the task that is allocated to this RowView
final Task t = (Task) v.getTag();
// Instantiate the intent that will be used to call the email client
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
// Variables/Arrays to hold email attributes
String[] emailRecipients = { mContext.getString(R.string.email_task_to_email) };
String emailType = mContext.getString(R.string.email_task_type);
String emailTitle = mContext.getString(R.string.email_task_title);
String emailSubject = String.format(mContext.getString(R.string.email_task_subject), t.getName());
String emailMessage = String.format(mContext.getString(R.string.email_task_message), t.getResponsible(), t.getName(), mContext.getString(t.getPriorityStringId()));
// Add the email attributes to the intent
emailIntent.setType(emailType);
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, emailRecipients);
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, emailSubject);
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, emailMessage);
// Start intent
mContext.startActivity(Intent.createChooser(emailIntent, emailTitle));
}
/**
* Refreshes the ListView with the modified dataset.
*/
public void forceReload()
{
notifyDataSetChanged();
}
}

need help for on click listener for android custom ListView

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;
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Custom ListAdapter not working - android

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