Use custom model in ArrayAdapter
Description
The following code shows how to use custom model in ArrayAdapter.
Example
res/layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (c) 2012 Manning
See the file license.txt for copying permission.
-->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toRightOf="@id/image"
android:orientation="vertical" >
<TextView
android:id="@+id/text1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/text2"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>
Java code
/*******************************************************************************
* Copyright (c) 2012 Manning/*from w w w.j av a 2 s. c o m*/
* See the file license.txt for copying permission.
******************************************************************************/
import java.util.List;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
import android.app.ListActivity;
import android.os.Bundle;
public class MainActivity extends ListActivity {
private static final int MODEL_COUNT = 30;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(new ModelAdapter(this, 0, buildModels()));
}
private List<Model> buildModels() {
final ArrayList<Model> ret = new ArrayList<Model>(MODEL_COUNT);
for (int i = 0; i < MODEL_COUNT; i++) {
final Model model = new Model();
model.setImage(R.drawable.icon);
model.setText1("Name " + i);
model.setText2("Description " + i);
ret.add(model);
}
return ret;
}
}
class Model {
private String mText1;
private String mText2;
private int mImageResId;
public String getText1() {
return mText1;
}
public void setText1(String text1) {
mText1 = text1;
}
public String getText2() {
return mText2;
}
public void setText2(String text2) {
mText2 = text2;
}
public int getImage() {
return mImageResId;
}
public void setImage(int imageResId) {
mImageResId = imageResId;
}
}
class ModelAdapter extends ArrayAdapter<Model> {
private LayoutInflater mInflater;
public ModelAdapter(Context context, int textViewResourceId,
List<Model> objects) {
super(context, textViewResourceId, objects);
mInflater = LayoutInflater.from(context);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder viewHolder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.row_layout, parent,
false);
viewHolder = new ViewHolder();
viewHolder.imageView = (ImageView) convertView
.findViewById(R.id.image);
viewHolder.text1 = (TextView) convertView
.findViewById(R.id.text1);
viewHolder.text2 = (TextView) convertView
.findViewById(R.id.text2);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
Model model = getItem(position);
viewHolder.imageView.setImageResource(model.getImage());
viewHolder.text1.setText(model.getText1());
viewHolder.text2.setText(model.getText2());
return convertView;
}
private static class ViewHolder {
public ImageView imageView;
public TextView text1;
public TextView text2;
}
}
res/layout/row.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView android:id="@+id/numbers_row_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:singleLine="true"/>
<Button android:id="@+id/numbers_row_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Remove"/>
</LinearLayout>