【Android】簡単なリストビュー作成

Posted by takaaki On 9月 14, 2018 0 Comment

簡単なリストビュー作成のソースコード

自分用メモ

Androidのsimple_list_itemを使った簡単なリストビュー作成の方法

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
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 {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        List<Map<String, String >> items = new ArrayList<Map<String, String>>();

        //Data
        Map<String, String> map = new HashMap<String, String>();
        map.put("key1", "title");
        map.put("key2", "subtitle");
        items.add(map);

        //Adapter
        String[] from = {"key1", "key2"};
        int[] to = {android.R.id.text1, android.R.id.text2};    //simple_list_item2.xml内のTextViewのidを指定
        SimpleAdapter adapter = new SimpleAdapter(this, items, android.R.layout.simple_list_item_2, from, to);

        //Set adapter to ListView.
        final ListView listView = (ListView)findViewById(R.id.listview);
        listView.setAdapter(adapter);

    }
}

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

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 {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

List<Map<String, String >> items = new ArrayList<Map<String, String>>();

//Data

Map<String, String> map = new HashMap<String, String>();

map.put("key1", "title");

map.put("key2", "subtitle");

items.add(map);

//Adapter

String[] from = {"key1", "key2"};

int[] to = {android.R.id.text1, android.R.id.text2}; //simple_list_item2.xml内のTextViewのidを指定

SimpleAdapter adapter = new SimpleAdapter(this, items, android.R.layout.simple_list_item_2, from, to);

//Set adapter to ListView.

final ListView listView = (ListView)findViewById(R.id.listview);

listView.setAdapter(adapter);

}

<?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">

    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>