April 2014
Intermediate to advanced
260 pages
5h
Japanese
Content preview from 実践 Android Developer Tools
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197
12
章
グラフィカルエディタの使い方
今までのところ、Androidアプリケーションのユーザーインターフェイス（UI）をもっとも簡単に、
もっとも効率よくデザインするための方法はGraphical Layoutツールだ。以前のこのツールは、使
い方が難しく、生成するコードが読みにくいなど、実用上の限界がいくつもあったが、リリースを重
ねるうちに改善されてきた。WindowsやiOS用のGUIビルダーが使っている標準セットに近づき、
Androidのもう1 つのルート（マニュアルでの XMLファイルの編集）よりもうまく機能する。ユーザー
インターフェイスの生成、既存レイアウトのリファクタリング、複数の環境でのUIの表示を始めとす
る多くのことが楽になった。開発の効率は上がり、きちんとした形式のレイアウトコードを確実に作
れるようになっている。
12.1
グラフィカルレイアウトエディタでレイアウトを生成する
XMLの編集がいやなら、UIコンポーネントをドラッグアンドドロップしてレイアウトを作れるグラ
フィカルツールが使える。これを使えば、基本となるレイアウトを作ってからXMLを編集してレイア
ウトを細かくチューニングできる。
グラフィカルレイアウトエディタ（図12-1参照）は、Androidの任意の
layout.xml
ファイルのタブ
（左下）を選択すると開く。このタブを選択すると、インターフェイスを作るために使えるツールを
集めたパースペクティブが表示される。レイアウトファイル名を表示しているタブを選ぶと ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.