/res/layout/row.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="horizontal" >
<ImageView
android:id="@+id/rowImageView"
android:layout_gravity="center"
android:layout_width="48dp"
android:layout_height="48dp" />
<TextView
android:id="@+id/rowTextView"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
/res/layout/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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context="com.example.androidimageviewlist.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold" />
<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
MainActivity.java
package com.example.androidimageviewlist;
import java.util.ArrayList;
import java.util.List;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
public class Item {
Drawable ItemDrawable;
String ItemString;
Item(Drawable drawable, String t){
ItemDrawable = drawable;
ItemString = t;
}
}
static class ViewHolder {
ImageView icon;
TextView text;
}
public class ItemsListAdapter extends BaseAdapter {
private Context context;
private List<Item> list;
ItemsListAdapter(Context c, List<Item> l){
context = c;
list = l;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View rowView = convertView;
// reuse views
if (rowView == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
rowView = inflater.inflate(R.layout.row, null);
ViewHolder viewHolder = new ViewHolder();
viewHolder.icon = (ImageView) rowView.findViewById(R.id.rowImageView);
viewHolder.text = (TextView) rowView.findViewById(R.id.rowTextView);
rowView.setTag(viewHolder);
}
ViewHolder holder = (ViewHolder) rowView.getTag();
holder.icon.setImageDrawable(list.get(position).ItemDrawable);
holder.text.setText(list.get(position).ItemString);
return rowView;
}
}
List<Item> items;
ListView listView;
ItemsListAdapter myItemsListAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView)findViewById(R.id.listview);
initItems();
myItemsListAdapter = new ItemsListAdapter(this, items);
listView.setAdapter(myItemsListAdapter);
listView.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(MainActivity.this,
((Item)(parent.getItemAtPosition(position))).ItemString,
Toast.LENGTH_LONG).show();
}});
}
private void initItems(){
items = new ArrayList<Item>();
TypedArray arrayDrawable = getResources().obtainTypedArray(R.array.resicon);
TypedArray arrayText = getResources().obtainTypedArray(R.array.restext);
for(int i=0; i<arrayDrawable.length(); i++){
Drawable d = arrayDrawable.getDrawable(i);
String s = arrayText.getString(i);
Item item = new Item(d, s);
items.add(item);
}
arrayDrawable.recycle();
arrayText.recycle();
}
}
/res/values/arrays.xml, used to load the List.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<array name="resicon">
<item>@android:drawable/ic_dialog_alert</item>
<item>@android:drawable/ic_dialog_dialer</item>
<item>@android:drawable/ic_dialog_email</item>
<item>@android:drawable/ic_dialog_info</item>
<item>@android:drawable/ic_dialog_map</item>
<item>@android:drawable/ic_menu_camera</item>
<item>@android:drawable/ic_menu_compass</item>
<item>@android:drawable/ic_menu_gallery</item>
<item>@android:drawable/ic_menu_my_calendar</item>
<item>@android:drawable/ic_menu_myplaces</item>
<item>@android:drawable/ic_menu_slideshow</item>
<item>@android:drawable/ic_menu_today</item>
</array>
<array name="restext">
<item>"alert"</item>
<item>"dialer"</item>
<item>"email"</item>
<item>"info"</item>
<item>"map"</item>
<item>"camera"</item>
<item>"compass"</item>
<item>"gallery"</item>
<item>"calendar"</item>
<item>"myplaces"</item>
<item>"slideshow"</item>
<item>"today"</item>
</array>
</resources>
Download the files.
Next:
- Add/Remove items to custom ListView programmatically
- Drag and Drop items between ListView
- Improved Drag and Drop items between ListView
- Drag and Drop items between ListView, with OnDragListener on ListView cells
- Drag and Drop between ListView and GridView
Related:
- Android ListView with CheckBox
2 comments:
Hola , me sirvió muy bien
Pude asignar de manera fluida un bitmap a la imagen , por medio de una clase para cargar el mapa de bits a la imagen, todo esto dentro del getView();
Muy Bien.
How do you add the images to the list?
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