April 2014
Intermediate to advanced
260 pages
5h
Japanese
Content preview from 実践 Android Developer Tools
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104
7
章 コードをテストする
デバッグ可能だと指定する必要がある。ADTツールを使ってアプリケーションをデプロイすると
（Eclipse、その他の IDEから）、これは自動的に処理される。これらのツールを使わずにプロジェク
トをビルドしている場合は、マニュアルでこの値を設定しなければならない。アプリケーションがデ
バッグ可能だということを指定するためには、
AndroidManifest.xml
ファイルの
application
要素に
android:debuggable="true"
属性を追加する。次のようにすればよい。
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:debuggable="true">
マニュアルでデバッグフラグをセットしたときには、アプリケーションを本番用
にリリースする前に忘れずにフラグを取り除かなければならない。デバッグフラ
グはパフォーマンスの足を引っ張るので、本番環境では有効にしておきたくない。
取り除くのを忘れた場合、
Lint
チェッカ（「
7.3 Lint
」参照）を使えば、リリースビ
ルドでデバッグフラグがセットされていると警告してくれる。
7.2.2
ブレークポイントを設定する
通常、デバッグはアプリケーションのソースコードにブレークポイントを設定するところから始ま
る。Eclipseでは、コードパスの横にあるスペースを右クリックして「 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.