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Trying to create a custom ArrayAdapter with ArrayList

I'm trying to get ArrayList with different variables that i'm getting from a database to display in a customized listview
this is the main 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="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="View the balance sheet"
android:textSize="29sp"
android:id="#+id/view"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="36dp" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listView">
</ListView>
</RelativeLayout>
this is the customized layout
<?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_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/description_names"
android:text="description"
android:layout_marginTop="25sp"
android:layout_marginLeft="15sp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/values_names"
android:text="value"
android:layout_marginTop="25sp"
android:layout_marginLeft="105sp"/>
</RelativeLayout>
this is the adapter, i wanted both the ArrayLists from the main activity but it's not working
class CustomAdapter extends ArrayAdapter<String> {
CustomAdapter(#NonNull Context context, ArrayList<String> mDetails,ArrayList<String> mValues) {
super(context,R.layout.custom_layout ,mDetails);
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
LayoutInflater inflater=LayoutInflater.from(getContext());
View customView=inflater.inflate(R.layout.custom_layout,parent,false);
String details=getItem(position);
String values=getItem(position);
TextView description_names=(TextView)customView.findViewById(R.id.description_names);
TextView values_names=(TextView)customView.findViewById(R.id.values_names);
description_names.setText(details);
return customView;
}
}
main activity
ListView listvIew=(ListView)findViewById(R.id.listView);
final ArrayAdapter<String>array=new CustomAdapter(this,mDetails,mValues);
listvIew.setAdapter(array);
private ArrayList<String>mDetails=new ArrayList<>();
private ArrayList<String>mValues=new ArrayList<>();
V3Ref.addChildEventListener(new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
String value=dataSnapshot.child("records").child("values").getValue(String.class);
Log.d(TAG, "onChildAdded: the value is"+value);
mDetails.add(value);
mValues.add(value);
array.notifyDataSetChanged();
}
i'm getting values from the database then putting them in ArrayLists then i'm trying to display them in a customized listview but it's not working when i try to use the second Arraylist

adapter calls from your main activity should be like,
CusatomeAdapter adapter;
adapter = new CusatomeAdapter(mActivity,mList1 ,mList2);
mListview.setAdapter(adapter);
here is your adapter calss
public class CusatomeAdapter extends BaseAdapter {
public ArrayList<String> mList1;
public ArrayList<String> mList2;
Activity activity;
public CusatomeAdapter(Activity activity,ArrayList<String> mList1 , ArrayList<String> mList2){
super();
this.activity = activity;
this.mList1 = mList1;
this.mList2 = mList2;
}
#Override
public int getCount() {
return mList1.size(); //give the size of list here
}
#Override
public Object getItem(int position) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
LayoutInflater inflater = activity.getLayoutInflater();
if (convertView == null) {
convertView = inflater.inflate(R.layout.row_detail, null);
holder = new ViewHolder();
holder.tv_detail = (TextView) convertView.findViewById(R.id.tv_detail);
//same way define another text view and set their value ..
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tv_detail.setText(mList1.get(position).toString());
return convertView;
}
private class ViewHolder {
TextView tv_detail;
}
}

Custom List view View Holder pattern with RadioGroup state not maintained

I have implemented CustomListView with RadioGroup. When I selected the radio button of first/beginning rows and scrolling to the end of list, last row elements are automatically selected. And when I'm scrolling back to beginning of List, Radiogroup state is not maintained. I have spent lot of time with this issue.
Kindly help me out where I'm doing a mistake.
MyAdapter.java
public class MyAdapter extends ArrayAdapter<Model> {
private final List<Model> list;
private final Activity context;
public MyAdapter(Activity context, List<Model> list) {
super(context, R.layout.row, list);
this.context = context;
this.list = list;
}
static class ViewHolder {
protected TextView text;
protected RadioGroup radioGroup;
protected RadioButton firstRadio;
protected RadioButton secondRadio;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
convertView = inflator.inflate(R.layout.row, null);
viewHolder = new ViewHolder();
viewHolder.text = (TextView) convertView.findViewById(R.id.label);
viewHolder.radioGroup = (RadioGroup) convertView.findViewById(R.id.radio_group);
viewHolder.firstRadio = (RadioButton) convertView.findViewById(R.id.first_rad);
viewHolder.secondRadio = (RadioButton) convertView.findViewById(R.id.second_rad);
viewHolder.radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup radioGroup, int selectedID) {
int getPosition = (Integer) radioGroup.getTag(); // Here we get the position that we have set for the checkbox using setTag.
list.get(getPosition).setSelected(selectedID); // Set the value of checkbox to maintain its state.
}
});
convertView.setTag(viewHolder);
convertView.setTag(R.id.label, viewHolder.text);
convertView.setTag(R.id.radio_group, viewHolder.radioGroup);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.radioGroup.setTag(position); // This line is important.
viewHolder.text.setText(list.get(position).getName());
if(list.get(position).getSelected() == viewHolder.firstRadio.getId()){
viewHolder.firstRadio.setChecked(true);
}else if(list.get(position).getSelected() == viewHolder.secondRadio.getId()){
viewHolder.secondRadio.setChecked(true);
}
return convertView;
}
}
row.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="wrap_content" >
<TextView
android:id="#+id/label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#+id/label"
android:textSize="30sp" >
</TextView>
<RadioGroup
android:id="#+id/radio_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/label"
android:orientation="horizontal">
<RadioButton
android:id="#+id/first_rad"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginLeft="4dip"
android:layout_marginRight="10dip"
android:focusable="false"
android:focusableInTouchMode="false" >
</RadioButton>
<RadioButton
android:id="#+id/second_rad"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginLeft="4dip"
android:layout_marginRight="10dip"
android:focusable="false"
android:focusableInTouchMode="false" >
</RadioButton>
</RadioGroup>
Model.java
public class Model {
private String name;
private int selected;
public Model(String name) {
this.name = name;
}
public String getName() {
return name;
}
public int getSelected() {
return selected;
}
public void setSelected(int selected) {
this.selected = selected;
}
}

Change the conditions in if statement as below and it will work.
if(list.get(position).getSelected() == viewHolder.firstRadio.getId())
{
viewHolder.firstRadio.setChecked(true);
viewHolder.secondRadio.setChecked(false);
}
else if(list.get(position).getSelected() == viewHolder.secondRadio.getId())
{
viewHolder.secondRadio.setChecked(true);
viewHolder.firstRadio.setChecked(false);
}
else
{
viewHolder.secondRadio.setChecked(false);
viewHolder.firstRadio.setChecked(false);
}

I'm not sure how it is working now. I've spent lot of days in this issue. Overriding getViewTypeCount and getItemViewType resolved my issue.
#Override
public int getViewTypeCount() {
if (objects.size() > 0) {
return objects.size();
}
return 1;
}
#Override
public int getItemViewType(int position) {
return position;
}

Remove item from gridview

I'm removing images from a gridview when a button is pressed.
The images does remove fine and the gridview also updates with the call "adapter.notifyDataSetChanged();".
When an imageview is removed another image next to this position should take its position. This happens, but the image here won't reload so there's just a blank space? How can I get this imageview to reload its image?
The problem:
Here is my gridadapter:
public class FavoriteMovieGridAdapter extends BaseAdapter {
Context context;
ArrayList<DataFavorites> List;
FavoritesMovie fragment;
private static LayoutInflater inflater = null;
FavoriteMovieGridAdapter adapter = this;
public FavoriteMovieGridAdapter(Context context, ArrayList<DataFavorites> List, FavoritesMovie fragment) {
this.context = context;
this.List = List;
this.fragment = fragment;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return List.size();
}
#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;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// Avoid unneccessary calls to findViewById() on each row
final ViewHolder holder;
/*
* If convertView is not null, reuse it directly, no inflation
* Only inflate a new View when the convertView is null.
*/
if (convertView == null) {
convertView = inflater.inflate(R.layout.favorite_grid_item, null);
holder = new ViewHolder();
holder.poster = (ImageView) convertView.findViewById(R.id.upcoming_image);
holder.editbutton = (ImageView) convertView.findViewById(R.id.delete_item);
// The tag can be any Object, this just happens to be the ViewHolder
convertView.setTag(holder);
}
else{
// Get the ViewHolder back to get fast access to the TextView
// and the ImageView.
holder = (ViewHolder) convertView.getTag();
}
final View finalConvertView = convertView;
final DataFavorites e;
new DataFavorites();
e = List.get(position);
String url = String.valueOf(e.getUrl());
// load image url into poster
// Seems as if this doesn't run for the imageview next to this when this view is removed?
Picasso.with(context).load(url).fit().placeholder(R.drawable.movie_back).into(holder.poster);
// Create onclick and show edit button
convertView.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
// show edit button
holder.editbutton.setVisibility(View.VISIBLE);
YoYo.with(Techniques.FadeIn).duration(700).playOn(finalConvertView.findViewById(R.id.delete_item));
// onclick edit button remove item and update gridview
holder.editbutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
YoYo.with(Techniques.ZoomOut).duration(700).playOn(finalConvertView.findViewById(R.id.favorite_relative));
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
adapter.List.remove(e);
adapter.notifyDataSetChanged();
// Delete specific movie from data base
DatabaseHandlerMovie db = new DatabaseHandlerMovie(context);
// Reading all movies
db.deleteMovie(e);
}
}, 1000);
}
});
return false;
}
});
return convertView;
}
static class ViewHolder {
ImageView poster;
ImageView editbutton;
}
}
My grid item layout:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/favorite_relative"
android:layout_centerHorizontal="true"
android:gravity="center_horizontal">
<ImageView android:layout_width="123.3dp"
android:layout_height="185.3dp"
android:id="#+id/upcoming_image"
android:scaleType="fitXY" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/delete_item"
android:src="#drawable/ic_remove_circle_outline_white_24dp"
android:tint="#color/colorPrimaryDark"
android:clickable="true"
android:visibility="gone"
android:layout_alignRight="#+id/upcoming_image"
android:layout_alignEnd="#+id/upcoming_image"/>
</RelativeLayout>
My grid layout:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".Favorites"
android:background="#FFFFFF"
android:focusableInTouchMode="true">
<GridView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:id="#+id/movies_gridlayout"
android:paddingRight="-1dp"
android:paddingEnd="-1dp"
android:numColumns="3"
android:background="#ffffff"
android:visibility="invisible"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:id="#+id/favorite_none"
android:text="No favorite movies found"
android:textSize="15sp"
android:visibility="gone"
android:textColor="#color/SecondaryText"
/>
<ProgressBar
android:id="#+id/progressBar"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:visibility="gone"
>
</ProgressBar>
</FrameLayout>

Turns out a 3rd-party lib was causing this:
YoYo.with(Techniques.ZoomOut).duration(700).playOn(finalConvertView.findViewById(R.id.favorite_relative));

you will have adapter and mainactivity for gridview
So u will have to implement public interface in both of them to communicate
following code may help you :)
In Adapter class add following code
private OnItemClickListner onItemClickListner;
public MyAdapter(Context c, List<PDFDoc> pdfDocs,OnItemClickListner onItemClickListner) {
this.context = c;
this.pdfDocs = pdfDocs;
this.onItemClickListner=onItemClickListner;
}
public interface OnItemClickListner {
void removefromadapter(int position);
}
ImageButton imageButton = view.findViewById(R.id.cancelid);
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// write your stuff here
onItemClickListner.removefromadapter(position);
}
});
In MainActivity of gridview add following code
implements OnItemClickListner required**
public class addclient_fragment extends Fragment implements MyAdapter.OnItemClickListner {
you will required to add this method in mainactivity
#Override
public void removefromadapter(int position) {
// write your stuff here
}

Adding button as lest element in gridview

I know how to make every single cell in a gridview into a button, but that's not what I'm after.
I have a gridview that's filled with this adapter.
public class TaskAdapter extends BaseAdapter{
private Context mContext;
public TaskAdapter(Context c)
{
mContext = c;
}
#Override
public int getCount() {
return nThumbsIds.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View sView = convertView;
if(convertView == null){
LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
sView = inflater.inflate(R.layout.task_square, parent, false);
TextView tView = (TextView) sView.findViewById(R.id.textView);
tView.setText(nThumbsIds.get(position));
}
return sView;
}
}
And nThumbsIds is filled with Strings whose contents will be different at almost every build.
I want to add a button as the last element of the grid, always after all the Strings. Is there a way?

Try like this:
Create Adapter
public class TaskAdapter extends BaseAdapter
{
private Context mContext;
public TaskAdapter(Context c)
{
mContext = c;
}
#Override
public int getCount()
{
return nThumbsIds.size();
}
#Override
public Object getItem(int position)
{
// TODO Auto-generated method stub
return nThumbsIds.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)
{
TextView tView =null;
Button tBtn =null;
LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
convertView = inflater.inflate(R.layout.task_square, parent, false);
tView = (TextView) convertView.findViewById(R.id.grid_item_txv);
tBtn = (Button) convertView.findViewById(R.id.grid_item_btn);
if(position < nThumbsIds.size()-1)
{
tView.setText(nThumbsIds.get(position));
tView.setVisibility(View.VISIBLE);
tBtn.setVisibility(View.GONE);
}
else
{
tBtn.setText(nThumbsIds.get(position));
tView.setVisibility(View.GONE);
tBtn.setVisibility(View.VISIBLE);
}
return convertView;
}
Your Grid Item layout xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/grid_item_txv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="20dp"
android:layout_centerInParent="true"
android:gravity="center"
android:text="Smaple"/>
<Button
android:id="#+id/grid_item_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="20dp"
android:gravity="center"
android:layout_centerInParent="true"
android:text="sample"
android:visibility="gone" />
</RelativeLayout>
GridView in your activity's layout :
<GridView
android:id="#+id/test_grid"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:columnWidth="100dp"
android:numColumns="auto_fit"
android:stretchMode="columnWidth" >
</GridView>

ListView / ListAdapter with 2 strings in Android project

I am working on Android project. I follow tutorial from http://www.vogella.com/articles/AndroidSQLite/article.html but I stuck on something. Tutorial shows how to use Class with 1 String object. I am working with 2 String objects. So I changed few things (add new String to my class, change layout.simple_list_item_1 to android.R.layout.simple_list_item_2 etc.) And now the question is - how to make something to get Stoliki class objects (override toString() gives me only 1 item, so It's useless).
Class Stoliki
public class Stoliki {
private long id;
private String numer;
private String opis;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getNumer() {
return numer;
}
public void setNumer(String numer) {
this.numer = numer;
}
public String getOpis() {
return opis;
}
public void setOpis(String opis) {
this.opis = opis;
}
}
Activity
import android.app.ListActivity;
import android.os.Bundle;
import java.util.List;
import java.util.Random;
import android.view.View;
import android.widget.ArrayAdapter;
public class FirstGridPage extends ListActivity {
private StolikiDataSource datasource;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_list_stoliki);
datasource = new StolikiDataSource(this);
datasource.open();
List<Stoliki> values = datasource.getAllStoliki();
// Use the SimpleCursorAdapter to show the
// elements in a ListView
ArrayAdapter<Stoliki> adapter = new ArrayAdapter<Stoliki>(this,
android.R.layout.simple_list_item_1, values);
setListAdapter(adapter);
}
// Will be called via the onClick attribute
// of the buttons in main.xml
public void onClick(View view) {
#SuppressWarnings("unchecked")
ArrayAdapter<Stoliki> adapter = (ArrayAdapter<Stoliki>) getListAdapter();
Stoliki stolik = null;
switch (view.getId()) {
case R.id.add:
String[] stoliki_numer = new String[] { "1", "2", "3" };
String[] stoliki_opis = new String[] { "Czerwony", "Niebieski", "Zielony" };
int nextInt = new Random().nextInt(3);
// Save the new comment to the database
stolik = datasource.createStolik(stoliki_numer[nextInt], stoliki_opis[nextInt]);
adapter.add(stolik);
break;
case R.id.delete:
if (getListAdapter().getCount() > 0) {
stolik = (Stoliki) getListAdapter().getItem(0);
datasource.deleteStolik(stolik);
adapter.remove(stolik);
}
break;
}
adapter.notifyDataSetChanged();
}
#Override
protected void onResume() {
datasource.open();
super.onResume();
}
#Override
protected void onPause() {
datasource.close();
super.onPause();
}
}

http://www.youtube.com/watch?v=wDBM6wVEO70. Listview talk by Romain guy( android developer at google).
Main.xml
<ListView android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:focusableInTouchMode="false"
android:listSelector="#android:color/transparent"
android:layout_weight="2"
android:headerDividersEnabled="false"
android:footerDividersEnabled="false"
android:dividerHeight="8dp"
android:divider="#000000"
android:cacheColorHint="#000000"
android:drawSelectorOnTop="false">
</ListView>
</LinearLayout>
Customw row. row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:background="#ffffff"
>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:background="#drawable/itembkg"
/>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:text="TextView" />
</LinearLayout>
public class CustomListView extends Activity {
/** Called when the activity is first created. */
ListView lv1;
Customlistadapter cus;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Button b= (Button) findViewById(R.id.remove);
lv1 = (ListView) findViewById(R.id.list);
cus= new Customlistadapter(this);
lv1.setAdapter(cus);
}
}
Custom list adapter. Inflate custom layout for each row.
public class Customlistadapter extends ArrayAdapter {
private LayoutInflater mInflater;
Context c;
public Customlistadapter(CustomListView customListView) {
super(customListView, 0);
// TODO Auto-generated constructor stub
this.mInflater = LayoutInflater.from(customListView);
c=customListView;
}
public int getCount() {
return 20; // number of listview rows.
}
public Object getItem(int arg0) {
return arg0;
}
public long getItemId(int arg0) {
return arg0;
}
public View getView(final int arg0, View arg1, ViewGroup arg2) {
final ViewHolder vh;
vh= new ViewHolder();
if(arg1==null )
{
arg1=mInflater.inflate(R.layout.row, arg2,false);
vh.tv1= (TextView)arg1.findViewById(R.id.textView1);
vh.tv2= (TextView)arg1.findViewById(R.id.textView2);
}
else
{
arg1.setTag(vh);
}
vh.tv1.setText("hello");
vh.tv2.setText("hello");
return arg1;
}
static class ViewHolder //use a viewholder for smooth scrolling and performance.
{
TextView tv1,tv2;
}
}
Edit:
Your activity will have a listview. This is set in oncreate setContentView(R.layout.activity_main);. The main layout will have a listview. You set the adapter of listview as listview.setAdapter(youradapter);
Then listview will have custom layout ie row.xml inflated for each row item. You custom adapter for listview is where the row.xml is inflated. You defined your class CustomAdapter which extends ArrayAdapter. You override a set of methods.
getCount() --- size of listview.
getItem(int position) -- returns the position
getView(int position, View convertView, ViewGroup parent)
// position is the position in the listview.
//convertview - view that is tobe inflated
// you will return the view that is infated.
You will have to use a viewholder for smooth scrolling and performance. Imagine 1000 rows is lstview with images it may cause memory exceptions. One way to get rid of this is to recycle views. The visible views(rows) are not recycled. The video in the link at the top has a detail explanation on the topic
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#0095FF">
<ListView android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:focusableInTouchMode="false"
android:listSelector="#android:color/transparent"
android:layout_weight="2"
android:headerDividersEnabled="false"
android:footerDividersEnabled="false"
android:dividerHeight="8dp"
android:divider="#000000"
android:cacheColorHint="#000000"
android:drawSelectorOnTop="false">
</ListView>
</LinearLayout>
row.xml (layout inflated for each listview row)
<?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/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Header" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="80dp"
android:layout_gravity="center"
android:text="TextView" />
</LinearLayout>
MainActivity
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView ll = (ListView) findViewById(R.id.list);
CustomAdapter cus = new CustomAdapter();
ll.setAdapter(cus);
}
class CustomAdapter extends BaseAdapter
{
LayoutInflater mInflater;
public CustomAdapter()
{
mInflater = (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 30;
}
#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 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder vh;
vh= new ViewHolder();
if(convertView==null )
{
convertView=mInflater.inflate(R.layout.row, parent,false);
vh.tv2= (TextView)convertView.findViewById(R.id.textView2);
vh.tv1= (TextView)convertView.findViewById(R.id.textView2);
}
else
{
convertView.setTag(vh);
}
vh.tv1.setText("my text");
vh.tv2.setText("Postion = "+position);
return convertView;
}
class ViewHolder
{
TextView tv1,tv2;
}
}
}