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64 lines
3.3 KiB
64 lines
3.3 KiB
<p>This sample demonstrates how an application can make use of shared code and
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resources stored in an Android library project.</p>
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<p>In this case, the TicTacToeMain application project includes a reference to
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the TicTacToeLib library project. When you build the TicTacToeMain application,
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the build tools look for the library project and compile it's code and resources
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as part of the main application's <code>.apk</code> file. The main application
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is designed with a launcher activity called <code>MainActivity</code>, shown at
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left, below. When the user presses a button in the View,
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<code>MainActivity</code> starts a second activity, <code>GameActivity</code>,
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which is declared in the library project. </p>
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<ul>
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<li>The main application's <a
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href="AndroidManifest.html">AndroidManifest.xml</a> file contains declarations
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of both <code>MainActivity</code>, which is implemented locally in main project,
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and <code>GameActivity</code>, which is implemented in the library project.
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Currently, an application must declare in its manifest any components or
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resources that it is using from a library project.</li>
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<li><a
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href="src/com/example/android/tictactoe/MainActivity.html">MainActivity.java</a>
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shows how a class in the main application imports and uses
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classes from the library project. The Activity sets listeners on the buttons in
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the main View and, when one of them is clicked, creates an explicit Intent
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targeted at the <code>GameActivity</code> component declared in the TicTacToeLib
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library project. </li>
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</ul>
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<p>The TicTacToeLib library project includes a single Activity,
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<code>GameActivity</code>, that handles most of the application lifecycle.</p>
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<ul>
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<li>The library project includes an <a
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href="../TicTacToeLib/AndroidManifest.html">AndroidManifest.xml</a> file that
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declares <code>GameActivity</code>.</li>
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<li><a
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href="../TicTacToeLib/src/com/example/android/tictactoe/library/GameActivity.html">GameActivity.java</a>
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handles most of the application lifecycle and manages general game play.</li>
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<li><a
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href="../TicTacToeLib/src/com/example/android/tictactoe/library/GameView.html">GameView.java</a>
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renders the UI of the game and manages interaction events during game play.</li>
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</ul>
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<p>If you want to build the TicTacToeMain application, you can obtain it by
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downloading the "Samples for SDK API 8" component (or higher version) into your
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SDK, using the <em>Android SDK and AVD Manager</em>. Note that the application
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project depends on code and resources found in the TicTacToeLib library project
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— in order to build TicTacToeMain, you need to add both projects to your
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development environment. </p>
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<p>To build an application that uses a library project, you also need to update
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to the latest version of the SDK tools (r6 or higher) and Android platforms, as
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well as the latest version of ADT (0.9.7 or higher), if you are developing in
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Eclipse. </p>
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<p>For information about how to set up Android library projects, refer to
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<a href="../../../guide/developing/eclipse-adt.html#libraryProject">Developing
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in Eclipse with ADT</a> or <a
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href="../../../guide/developing/other-ide.html#libraryProject">Developing in
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Other IDEs</a>, depending on your environment.</p>
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<img alt="Screenshot of the main application" src="../images/TicTacToeMain.png" />
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<img alt="Screenshot of an Activity declared in a library project" src="../images/TicTacToeLib.png" />
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