docs/html/training/basics/firstapp/creating-project.jd

page.title=Creating an Android Project

page.tags=project setup
helpoutsWidget=true

trainingnavtop=true
next.title=Running Your App
next.link=running-app.html

@jd:body


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<h2>You should also read</h2>

<ul>
  <li><a href="{@docRoot}studio/projects/index.html">Projects Overview</a></li>
</ul>


</div>
</div>

<p>This lesson shows you how to create a new Android project with
  <a href="{@docRoot}studio/index.html">Android Studio</a> and describes some
  of the files in the project.</p>

<ol>
  <li>In Android Studio, create a new project:
    <ul>
      <li>If you don't have a project opened, in the <strong>Welcome to Android Studio</strong> window, click <strong>
        Start a new Android Studio project</strong>.</li>
      <li>If you have a project opened, select <strong>File > New Project</strong>.</li>
    </ul>
  </li>
  <li>In the <b>New Project</b> screen, enter the following values:</p>
    <ul>
      <li><strong>Application Name</strong>: "My First App" </li>
      <li><strong>Company Domain</strong>: "example.com"</li>
    </ul>
    <p>Android Studio fills in the package name and project location for you,
    but you can edit these if you'd like.
  </li>
  <li>Click <b>Next</b>.</li>
  <li>In the <b>Target Android Devices</b> screen, keep the default values and
    click <b>Next</b>.
    <p>The <b>Minimum Required SDK</b> is the earliest version of Android that your app supports,
      which is indicated by the <a href="{@docRoot}guide/topics/manifest/uses-sdk-element.html#ApiLevels">
      API level</a>. To support as many devices as possible, you should set this to the lowest
      version available that allows your app to provide its core feature set. If any feature of your
      app is possible only on newer versions of Android and it's not critical to the core
      feature set, enable that feature only when running on the versions that support it (see
      <a href="{@docRoot}training/basics/supporting-devices/platforms.html">
      Supporting Different Platform Versions</a>).</p>
    </li>

  <li>In the <strong>Add an Activity to Mobile</strong> screen, select <strong>Empty
    Activity</strong> and click <strong>Next</strong>.
  </li>

  <li>In the <strong>Customize the Activity</strong> screen, keep the default values
    and click <strong>Finish</strong>.
</ol>

<p>After some processing, Android Studio opens and displays a "Hello World" app
with default files. You will add functionality to some of
these files in the following lessons.</p>

<p>Now take a moment to review the most important files. First, be sure that
the <b>Project</b> window is open (select <b>View > Tool Windows > Project</b>)
and the <b>Android</b> view is selected from the drop-down list at the top.
You can then see the following files:</p>

<dl>
  <dt><b>app > java > com.example.myfirstapp > MainActivity.java</b></dt>
  <dd>This file appears in Android Studio after the New Project wizard finishes.
    It contains the class definition for the activity you created earlier. When you build
    and run the app, the {@link android.app.Activity} starts and loads the
    layout file that says "Hello World!"</dd>

  <dt><b>app > res > layout > activity_main.xml</b></dt>
  <dd>This XML file defines the layout of the activity. It contains a {@code TextView}
    element with the text "Hello world!".</dd>

  <dt><b>app > manifests > AndroidManifest.xml</b></dt>
  <dd>The <a href="{@docRoot}guide/topics/manifest/manifest-intro.html">manifest file</a> describes
    the fundamental characteristics of the app and defines each of its components. You'll revisit
    this file as you follow these lessons and add more components to your app.</dd>

  <dt><b>Gradle Scripts > build.gradle</b></dt>
  <dd>Android Studio uses Gradle to compile and build your app. There is a <code>build.gradle</code>
    file for each module of your project, as well as a <code>build.gradle</code> file for the entire
    project. Usually, you're only interested in the <code>build.gradle</code> file for the module.
    in this case the <code>app</code> or application module. For more information about this file,
    see <a href="{@docRoot}studio/build/index.html">Building Your Project with Gradle</a>.</dd>
</dl>

<p>
  To run the app, continue to the <a href="running-app.html">next lesson</a>.
</p>