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Commit 9ce46bc1 authored by Ricardo Cervera's avatar Ricardo Cervera Committed by Android Git Automerger
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am 7f214e61: am 8d1aa957: am 652e5c7e: Merge "docs: Describe the alloc tracker... 

am 7f214e61: am 8d1aa957: am 652e5c7e: Merge "docs: Describe the alloc tracker in Android Studio" into klp-modular-docs

* commit '7f214e61':
  docs: Describe the alloc tracker in Android Studio
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docs/html/sdk/installing/studio-debug.jd

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@@ -19,6 +19,7 @@ page.title=Debugging with Android Studio 
        <li><a href="#breakPointsDebug">Debug your app with breakpoints</a></li>

    </ol>

  </li>

  <li><a href="#allocTracker">Track Object Allocation</a></li>

  <li><a href="#deviceMonitor">Analyze Runtime Metrics to Optimize your App</a></li>

  <li><a href="#screenCap">Capture Screenshots and Videos</a></li>

</ol>
@@ -281,6 +282,47 @@ step:</p> 
<p class="img-caption"><strong>Figure 7.</strong> The Variables view in the Debug tool window.</p>





<h2 id="allocTracker">Track Object Allocation</h2>



<p>Android Studio lets you track objects that are being allocated on the Java heap and see which

classes and threads are allocating these objects. This allows you to see the list of objects

allocated during a period of interest. This information is valuable for assessing memory usage

that can affect application performance.</p>



<p>To track memory allocation of objects:</p>



<ol>

<li>Start your app as described in <a href="#runDebug">Run Your App in Debug Mode</a>.</li>

<li>Click <strong>Android</strong> <img src="{@docRoot}images/tools/as-android.png" alt=""

style="vertical-align:bottom;margin:0;height:20px"/> to open the <em>Android DDMS</em>

tool window.</li>

<li>On the <em>Android DDMS</em> tool window, select the <strong>Devices | logcat tab</strong>.</li>

<li>Select your device from the dropdown list.</li>

<li>Select your app by its package name from the list of running apps.</li>

<li>Click <strong>Start Allocation Tracking</strong>

<img src="{@docRoot}images/tools/as-allocstart.png" alt=""

style="vertical-align:bottom;margin:0;height:20px"/></li>

<li>Interact with your app on the device.</li>

<li>Click <strong>Stop Allocation Tracking</strong>

<img src="{@docRoot}images/tools/as-allocstop.png" alt=""

style="vertical-align:bottom;margin:0;height:20px"/></li>

</ol>



<p>Android Studio shows the objects that the system allocated with the following information:</p>



<ul>

<li>Allocation order</li>

<li>Allocated class</li>

<li>Allocation size</li>

<li>Thread ID</li>

<li>Allocation method, class, and line number</li>

<li>Stack trace at the point of allocation</li>

</ul>



<img src="{@docRoot}images/tools/as-alloctrack.png" alt="" width="750" height="252" />

<p class="img-caption"><strong>Figure 8.</strong> Object allocation tracking in Android Studio.</p>





<h2 id="deviceMonitor">Analyze Runtime Metrics to Optimize your App</h2>



<p>Even if your application does not generate runtime errors, this does not mean it is free of