1page.title=Managing Projects from Eclipse with ADT 2parent.title=Managing Projects 3parent.link=index.html 4@jd:body 5 6 <div id="qv-wrapper"> 7 <div id="qv"> 8 <h2>In this document</h2> 9 10 <ol> 11 <li><a href="#CreatingAProject">Creating an Android Project</a></li> 12 13 <li><a href="#SettingUpLibraryProject">Setting up a Library Project</a></li> 14 15 <li><a href="#ReferencingLibraryProject">Referencing a Library Project</a></li> 16 </ol> 17 18 <h2>See also</h2> 19 20 <ol> 21 <li><a href= 22 "{@docRoot}tools/testing/testing_eclipse.html#CreateTestProjectEclipse">Testing 23 from Eclipse with ADT</a></li> 24 </ol> 25 </div> 26 </div> 27 28 <p>Eclipse and the ADT plugin provide GUIs and wizards to create all three types of projects 29 (Android project, Library project, and Test project): 30 31 <ul> 32 <li>An Android project contains all of the files and resources that are needed to build a project into 33 an .apk file for installation. You need to create an Android project for any application that you 34 want to eventually install on a device.</li> 35 36 <li>You can also designate an Android project as a library project, which allows it to be shared 37 with other projects that depend on it. Once an Android project is designated as a library 38 project, it cannot be installed onto a device.</li> 39 40 <li>Test projects extend JUnit test functionality to include Android specific functionality. For 41 more information on creating a test project, see <a href= 42 "{@docRoot}tools/testing/testing_eclipse.html">Testing from Eclipse with ADT</a>.</li> 43 </ul> 44 45 <h2 id="CreatingAProject">Creating an Android Project</h2> 46 47 <p>The ADT plugin provides a <em>New Project Wizard</em> that you can use to quickly create a new Android 48 project (or a project from existing code). To create a new project:</p> 49 50 <ol> 51 <li>Select <strong>File</strong> > <strong>New</strong> > <strong>Project</strong>.</li> 52 53 <li>Select <strong>Android</strong> > <strong>Android Project</strong>, and click 54 <strong>Next</strong>.</li> 55 56 <li>Select the contents for the project: 57 58 <ul> 59 <li>Enter a <em>Project Name</em>. This will be the name of the folder where your project 60 is created.</li> 61 62 <li>Under Contents, select <strong>Create new project in workspace</strong>. Select your 63 project workspace location.</li> 64 65 <li>Under Target, select an Android target to be used as the project's Build Target. The 66 Build Target specifies which Android platform you'd like your application built against. 67 68 <p>Select the lowest platform with which your application is compatible.</p> 69 70 <p class="note"><strong>Note:</strong> You can change your the Build Target for your 71 project at any time: Right-click the project in the Package Explorer, select 72 <strong>Properties</strong>, select <strong>Android</strong> and then check the desired 73 Project Target.</p> 74 </li> 75 76 <li>Under Properties, fill in all necessary fields. 77 78 <ul> 79 <li>Enter an <em>Application name</em>. This is the human-readable title for your 80 application — the name that will appear on the Android device.</li> 81 82 <li>Enter a <em>Package name</em>. This is the package namespace (following the same 83 rules as for packages in the Java programming language) where all your source code will 84 reside.</li> 85 86 <li>Select <em>Create Activity</em> (optional, of course, but common) and enter a name 87 for your main Activity class.</li> 88 89 <li>Enter a <em>Min SDK Version</em>. This is an integer that indicates the minimum API 90 Level required to properly run your application. Entering this here automatically sets 91 the <code>minSdkVersion</code> attribute in the <a href= 92 "{@docRoot}guide/topics/manifest/uses-sdk-element.html"><uses-sdk></a> of your 93 Android Manifest file. If you're unsure of the appropriate <a href= 94 "{@docRoot}guide/topics/manifest/uses-sdk-element.html#ApiLevels">API Level</a> to use, copy the API Level 95 listed for the Build Target you selected in the Target tab.</li> 96 </ul> 97 </li> 98 </ul> 99 </li> 100 101 <li>Click <strong>Finish</strong>.</li> 102 </ol> 103 104 <p class="note"><strong>Tip:</strong> You can also start the New Project Wizard from the 105 <em>New</em> icon in the toolbar.</p> 106 107 <h2 id="SettingUpLibraryProject">Setting up a Library Project</h2> 108 109 <p>A library project is a standard Android project, so you can create a new one in the same way 110 as you would a new application project.</p> 111 112 <p>When you are creating the library project, you can select any application name, package, and 113 set other fields as needed, as shown in figure 1.</p> 114 115 <p>Next, set the project's properties to indicate that it is a library project:</p> 116 117 <ol> 118 <li>In the <strong>Package Explorer</strong>, right-click the library project and select 119 <strong>Properties</strong>.</li> 120 121 <li>In the <strong>Properties</strong> window, select the "Android" properties group at left 122 and locate the <strong>Library</strong> properties at right.</li> 123 124 <li>Select the "is Library" checkbox and click <strong>Apply</strong>.</li> 125 126 <li>Click <strong>OK</strong> to close the <em>Properties</em> window.</li> 127 </ol> 128 129 <p>The new project is now marked as a library project. You can begin moving source code and 130 resources into it, as described in the sections below.</p> 131 132 <p>You can also convert an existing application project into a library. To do so, simply open the 133 Properties for the project and select the "is Library" checkbox. Other application projects can 134 now reference the existing project as a library project.</p> 135 136 <img src= "{@docRoot}images/developing/adt-props-isLib.png"> 137 138 <p class="img-caption"><strong>Figure 1.</strong> Marking a project as an 139 Android library project.</p> 140 141 <h3>Creating the manifest file</h3> 142 143 <p>A library project's manifest file must declare all of the shared components that it includes, 144 just as would a standard Android application. For more information, see the documentation for 145 <a href="{@docRoot}guide/topics/manifest/manifest-intro.html">AndroidManifest.xml</a>.</p> 146 147 <p>For example, the <a href= 148 "{@docRoot}resources/samples/TicTacToeLib/AndroidManifest.html">TicTacToeLib</a> example library 149 project declares the Activity <code>GameActivity</code>:</p> 150 <pre> 151<manifest> 152 ... 153 <application> 154 ... 155 <activity android:name="GameActivity" /> 156 ... 157 </application> 158</manifest> 159</pre> 160 161 <h2 id="ReferencingLibraryProject">Referencing a library project</h2> 162 163 <p>If you are developing an application and want to include the shared code or resources from a 164 library project, you can do so easily by adding a reference to the library project in the 165 application project's Properties.</p> 166 167 <p>To add a reference to a library project, follow these steps:</p> 168 169 <ol> 170 <li>In the <strong>Package Explorer</strong>, right-click the dependent project and select 171 <strong>Properties</strong>.</li> 172 173 <li>In the <strong>Properties</strong> window, select the "Android" properties group at left 174 and locate the <strong>Library</strong> properties at right.</li> 175 176 <li>Click <strong>Add</strong> to open the <strong>Project Selection</strong> dialog.</li> 177 178 <li>From the list of available library projects, select a project and click 179 <strong>OK</strong>.</li> 180 181 <li>When the dialog closes, click <strong>Apply</strong> in the <strong>Properties</strong> 182 window.</li> 183 184 <li>Click <strong>OK</strong> to close the <strong>Properties</strong> window.</li> 185 </ol> 186 187 <p>As soon as the Properties dialog closes, Eclipse rebuilds the project, including the contents 188 of the library project.</p> 189 190 <p>Figure 2 shows the Properties dialog that lets you add library references and move 191 them up and down in priority.</p><img src="{@docRoot}images/developing/adt-props-libRef.png"> 192 193 <p class="img-caption"><strong>Figure 2.</strong> Adding a reference to a 194 library project in the properties of an application project.</p> 195 196 <p>If you are adding references to multiple libraries, note that you can set their relative 197 priority (and merge order) by selecting a library and using the <strong>Up</strong> and 198 <strong>Down</strong> controls. The tools merge the referenced libraries with your application 199 starting from lowest priority (bottom of the list) to highest (top of the list). If more than one 200 library defines the same resource ID, the tools select the resource from the library with higher 201 priority. The application itself has highest priority and its resources are always used in 202 preference to identical resource IDs defined in libraries.</p> 203 204 <h3>Declaring library components in the manifest file</h3> 205 206 <p>In the manifest file of the application project, you must add declarations of all components 207 that the application will use that are imported from a library project. For example, you must 208 declare any <code><activity></code>, <code><service></code>, 209 <code><receiver></code>, <code><provider></code>, and so on, as well as 210 <code><permission></code>, <code><uses-library></code>, and similar elements.</p> 211 212 <p>Declarations should reference the library components by their fully-qualified package names, 213 where appropriate.</p> 214 215 <p>For example, the <a href= 216 "{@docRoot}resources/samples/TicTacToeMain/AndroidManifest.html">TicTacToeMain</a> example 217 application declares the library Activity <code>GameActivity</code> like this:</p> 218 <pre> 219<manifest> 220 ... 221 <application> 222 ... 223 <activity android:name="com.example.android.tictactoe.library.GameActivity" /> 224 ... 225 </application> 226</manifest> 227</pre> 228 229 <p>For more information about the manifest file, see the documentation for <a href= 230 "{@docRoot}guide/topics/manifest/manifest-intro.html">AndroidManifest.xml</a>.</p> 231 232 233 234 235 236 237 238
