Listview is nothing but a A view that shows items in a vertically scrolling list.
Here we will see how to show android custom listview(with image and text)
UI layout(activity_main.xml)
activity_main.xml file contains listview object which is used to display listview
<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" >
<TextView
android:id="@+id/banner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="Select your Favorite Social Network"
android:textSize="15sp" />
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/banner" >
</ListView>
</RelativeLayout>
(listview_row.xml)
Here (listview_row.xml) layout for ListView rows in a XML file and keep it in res/layout folder.
provides data to each row in ListView.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="@+id/icon_id"
android:layout_width="80dp"
android:layout_height="80dp"
android:paddingLeft="10dp"
android:paddingRight="10dp" />
<TextView
android:id="@+id/title_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/icon_id"
android:paddingBottom="10dp"
android:text="Title"
android:textColor="#3399FF"
android:textSize="14dp" />
<TextView
android:id="@+id/description_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/title_id"
android:layout_toRightOf="@+id/icon_id"
android:paddingLeft="10dp"
android:text="Description"
android:textColor="#CC0033"
android:textSize="12dp" />
</RelativeLayout>
Row.java
This class is usefull to store the data for each row in ListView.
package com.androidsurya.androidcustomlistview;
public class Row {
private int imageId;
private String title;
private String desc;
public Row(int imageId, String title, String desc) {
this.imageId = imageId;
this.title = title;
this.desc = desc;
}
public int getImageId() {
return imageId;
}
public void setImageId(int imageId) {
this.imageId = imageId;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
@Override
public String toString() {
return title + "\n" + desc;
}
}
Android Activity class(CustomListView.java)
package com.androidsurya.androidcustomlistview;
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;
public class CustomListView extends Activity implements OnItemClickListener {
public static final String[] titles = new String[] { "Facebook",
"Google +", "Orkut", "Twitter" };
public static final String[] descriptions = new String[] {
"Facebook is an online social networking service",
"Google + is an online social networking service",
"Orkut is an online social networking service",
"Twitter is an online social networking service" };
public static final Integer[] images = { R.drawable.facebook,
R.drawable.googleplus, R.drawable.orkut, R.drawable.twitter };
ListView listView;
List<Row> rowItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rowItems = new ArrayList<Row>();
for (int i = 0; i < titles.length; i++) {
Row item = new Row(images[i], titles[i], descriptions[i]);
rowItems.add(item);
}
listView = (ListView) findViewById(R.id.listView);
CustomBaseAdapter adapter = new CustomBaseAdapter(this, rowItems);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
Toast toast = Toast.makeText(getApplicationContext(), "Item Selected.."
+ (position + 1) + ": " + rowItems.get(position),
Toast.LENGTH_LONG);
toast.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
}
}
CustomBaseAdapter.java
CustomBaseAdapter is a Class which implements BaseAdapater
BaseAdapater is job is display data to each row in ListView.
package com.androidsurya.androidcustomlistview;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomBaseAdapter extends BaseAdapter {
Context context;
List<Row> rowItems;
public CustomBaseAdapter(Context context, List<Row> items) {
this.context = context;
this.rowItems = items;
}
/* private view holder class */
private class ViewHolder {
ImageView iconView;
TextView txtTitle;
TextView txtDesc;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.listview_row, null);
holder = new ViewHolder();
holder.txtDesc = (TextView) convertView
.findViewById(R.id.description_id);
holder.txtTitle = (TextView) convertView
.findViewById(R.id.title_id);
holder.iconView = (ImageView) convertView
.findViewById(R.id.icon_id);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
Row rowItem = (Row) getItem(position);
holder.txtDesc.setText(rowItem.getDesc());
holder.txtTitle.setText(rowItem.getTitle());
holder.iconView.setImageResource(rowItem.getImageId());
return convertView;
}
@Override
public int getCount() {
return rowItems.size();
}
@Override
public Object getItem(int position) {
return rowItems.get(position);
}
@Override
public long getItemId(int position) {
return rowItems.indexOf(getItem(position));
}
}
Register Android Activity in AndroidManifest.xml file
<activity
android:name="com.androidsurya.androidcustomlistview.CustomListView"
android:label="@string/app_name" >
Output Screenshot
