April 2014
Intermediate to advanced
260 pages
5h
Japanese
Content preview from 実践 Android Developer Tools
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86
6
章
Android Studio
による開発
タ、ドラッグアンドドロップデザイナが消え、XMLコードとレイアウトプレビューが表示される。図
6-11は、この状態の画面を示したものだ。ここに示したプレビューが、レイアウトプレビューツー
ルである。画面右側の「Preview」ボタンを選択すれば、パネルをオン/オフできる。このパネルは、
XMLエディタが使われているときに限り、表示される。
レイアウトプレビューは、レイアウトXMLに変 更 を 加 えるたびに更 新 される。たとえば、
TextViewやButtonのフォントスタイルを太字に変えると、レイアウトプレビューは太字のテキスト
を表示するようになる。XMLの近くで作業したいときのビューがこれだ。日常のAndroid開発におい
て、私はレイアウトデザイナとレイアウトプレビューの間を行ったり来たりすることが多い。
図6-11 XMLレイアウトエディタとレイアウトプレビュー
6.6
APK
を生成する
Android Studioで APKを生成するのは簡単だ。次の手順に従えばよい。
1. 「Build」→「Generate Signed APK」を選ぶ。すると、「Generate Signed APK」ウィザードが表
示される。
2. モジュールを選択して「Next]をクリックする。
3. Androidアプリケーションのために使っているキーストアのパスを入力するか、新しいキースト
アを作る。
4. （オプション）キーストアの値を入力したら、「Rememb ...
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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.
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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.