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Basic ListView With HashMap
Using Android Studio 1.4
1) Create New Project
Application Name: MyListViewHashMap1
Select API 14:Android 4.0 (IceCreamSandwich)
Follow the wizard to create New Empty Activity.
Select “Generate Layout File”
2) Add ListView
2.1) res/layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"tools:context=".MainActivity">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:divider="@null"
android:dividerHeight="0dip" />
</LinearLayout>
</RelativeLayout>
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3) Add Row Layout
3.1) res/layout/row_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="8dp" >
</ImageView>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:orientation="vertical"
android:paddingLeft="0px"
android:paddingRight="5dp" >
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:textColor="#FFF38585"
android:textSize="15sp" >
</TextView>
<TextView
android:id="@+id/region"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="4dp"
android:textColor="#FF2CE4A4"
android:textSize="13sp" >
</TextView>
</LinearLayout>
</LinearLayout>
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4) Add Drawables
Download MyListViewHashMap1-drawables.zip place the images into res/drawable folder.
5) Edit MainActivity.java
package com.notarazi.mylistviewhashmap1;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MainActivity extends AppCompatActivity {
private ListView mListView;
@Override
protected void onCreate (Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mListView = (ListView) findViewById(R.id.list);
List<Map<String, java.io.Serializable>> data = GetSampleData();
SimpleAdapter adapter;
adapter = new SimpleAdapter(this, data,
R.layout.row_layout,
new String[] { "logo", "name", "region" },
new int[] { R.id.logo, R.id.name, R.id.region });
mListView.setAdapter(adapter);
}
List<Map<String, java.io.Serializable>> GetSampleData(){
List<Map<String, java.io.Serializable>> list = new ArrayList<Map<String, java.io.Serializable>>();
Map<String, java.io.Serializable> map = new HashMap<String, java.io.Serializable>();
map.put("logo", R.drawable.car_honda);
map.put("name", "Honda");
map.put("region", "Asia");
list.add(map);
map = new HashMap<String, java.io.Serializable>();
map.put("logo", R.drawable.car_hyundai);
map.put("name", "Hyundai");
map.put("region", "Asia");
list.add(map);
map = new HashMap<String, java.io.Serializable>();
map.put("logo", R.drawable.car_toyota);
map.put("name", "Toyota");
map.put("region", "Asia");
list.add(map);
map = new HashMap<String, java.io.Serializable>();
map.put("logo", R.drawable.car_kia);
map.put("name", "Kia");
map.put("region", "Asia");
list.add(map);
map = new HashMap<String, java.io.Serializable>();
map.put("logo", R.drawable.car_proton);
map.put("name", "Proton");
map.put("region", "Asia");
list.add(map);
return list;
}
}
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