FizzBuzz を Java(Android) で書いてみた

無駄に ListView とか使って。
またもやコレジャナイ感。

１時間くらいかかった＿|￣|○

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

view raw activity_main.xml hosted with ❤ by GitHub

	<?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" >
	<TextView
	android:id="@+id/index"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_weight="1" />
	<TextView
	android:id="@+id/value"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_weight="1" />
	</LinearLayout>

view raw activity_main_list_row.xml hosted with ❤ by GitHub

	package com.example.android_practice;
	import java.util.ArrayList;
	import java.util.List;
	import android.app.Activity;
	import android.content.Context;
	import android.os.Bundle;
	import android.view.LayoutInflater;
	import android.view.Menu;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.ArrayAdapter;
	import android.widget.ListView;
	import android.widget.TextView;
	public class MainActivity extends Activity {
	private ListView _listView;
	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	this.setContentView(R.layout.activity_main);
	this._listView = (ListView) this.findViewById(R.id.listview);
	this._createListView();
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	getMenuInflater().inflate(R.menu.activity_main, menu);
	return true;
	}
	private void _createListView() {
	List<RowItem> rowItems = new ArrayList<RowItem>();
	for (int i = 1; i <= 100; i++) {
	String indexAsString = String.valueOf(i);
	if (i % 3 == 0 && i % 5 == 0) {
	rowItems.add(new RowItem(indexAsString, "FizzBuzz"));
	} else if (i % 3 == 0) {
	rowItems.add(new RowItem(indexAsString, "Fizz"));
	} else if (i % 5 == 0) {
	rowItems.add(new RowItem(indexAsString, "Buzz"));
	} else {
	rowItems.add(new RowItem(indexAsString, indexAsString));
	}
	}
	RowItemArrayAdapter arrayAdapter = new RowItemArrayAdapter(this,
	R.layout.activity_main_list_row, rowItems);
	this._listView.setAdapter(arrayAdapter);
	}
	private static class RowItem {
	private String _index;
	private String _value;
	public RowItem(String index, String value) {
	this._index = index;
	this._value = value;
	}
	public String getIndex() {
	return this._index;
	}
	public String getValue() {
	return this._value;
	}
	}
	private static class ViewHolder {
	public TextView indexTextView;
	public TextView valueTextView;
	}
	private static class RowItemArrayAdapter extends ArrayAdapter<RowItem> {
	private LayoutInflater _layoutInflater;
	private int _textViewResourceId;
	public RowItemArrayAdapter(Context context, int resource, List<RowItem> objects) {
	super(context, resource, resource, objects);
	this._layoutInflater = (LayoutInflater) context
	.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	this._textViewResourceId = resource;
	}
	/*
	* (non-Javadoc)
	*
	* @see android.widget.ArrayAdapter#getView(int, android.view.View,
	* android.view.ViewGroup)
	*/
	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
	final RowItem rowItem = (RowItem) this.getItem(position);
	ViewHolder viewHolder;
	if (null == convertView) {
	convertView = this._layoutInflater.inflate(this._textViewResourceId, null);
	viewHolder = new ViewHolder();
	viewHolder.indexTextView = (TextView) convertView.findViewById(R.id.index);
	viewHolder.valueTextView = (TextView) convertView.findViewById(R.id.value);
	convertView.setTag(viewHolder);
	} else {
	viewHolder = (ViewHolder) convertView.getTag();
	}
	viewHolder.indexTextView.setText(rowItem.getIndex());
	viewHolder.valueTextView.setText(rowItem.getValue());
	return convertView;
	}
	}
	}

view raw MainAcrivity.java hosted with ❤ by GitHub