130 lines
3.7 KiB
Plaintext
130 lines
3.7 KiB
Plaintext
page.title=Network Monitor
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parent.title=Android Monitor
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parent.link=android-monitor.html
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page.tags=monitor
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@jd:body
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<div id="qv-wrapper">
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<div id="qv">
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<h2>In this document</h2>
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<ol>
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<li><a href="#running">Displaying a Running App in the Network Monitor</a></li>
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</ol>
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<h2>See also</h2>
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<ol>
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<li>
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<a href="{@docRoot}tools/help/android-monitor.html">Android Monitor</a>
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</li>
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<li><a href="{@docRoot}tools/help/am-logcat.html">logcat Monitor</a>
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</li>
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<li><a href="{@docRoot}tools/help/am-memory.html">Memory Monitor</a>
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</li>
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<li><a href="{@docRoot}tools/help/am-cpu.html">CPU Monitor</a>
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</li>
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<li><a href="{@docRoot}tools/help/am-gpu.html">GPU Monitor</a>
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</li>
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</ol>
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<h2>Video</h2>
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<ol>
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<li><a href="https://www.youtube.com/watch?v=fEEulSk1kNY"
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class="external-link">Battery Drain and Networking</a></li>
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</ol>
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<h2>
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Dependencies and Prerequisites
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</h2>
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<ul>
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<li>
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<a href="{@docRoot}tools/building/building-studio.html#RunningOnDeviceStudio">Connect a
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hardware device</a> to your development computer.
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</li>
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<li>Make sure your development computer detects your hardware device, which often happens
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automatically when you connect it to a USB port.
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</li>
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<li>
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<a href="{@docRoot}tools/device.html#device-developer-options">Enable</a> <strong><a href=
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"{@docRoot}tools/device.html#device-developer-options">USB debugging</a></strong> in
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<strong>Developer Options</strong> on the device.
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</li>
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<li>In your app, set the <code>debuggable</code> property to <code>true</code> in the manifest or
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<code>build.gradle</code> file (it’s initially set by default).
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</li>
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<li>Enable ADB integration through <strong>Tools</strong> > <strong>Android</strong> >
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<strong>Enable ADB Integration</strong>.
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</li>
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<li>
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<a href="{@docRoot}tools/help/monitor.html">Android Device Monitor</a> can’t be running.
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</li>
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</ul>
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</div>
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</div>
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<p>
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The Network Monitor makes it possible to track when your application is making network requests.
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Using this tool, you can monitor how and when your app transfers data, and optimize the underlying
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code appropriately.
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</p>
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<p>
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By monitoring the frequency of data transfers, and the amount of data transferred during each
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connection, you can identify areas of your app that can be made more efficient and use less
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battery power.
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Generally, you should look for short spikes that can be delayed, or that could cause a later
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transfer to be preempted.
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</p>
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<h2 id="running">
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Displaying a Running App in the Network Monitor
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</h2>
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<p>
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Follow these steps:
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</p>
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<ol>
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<li>Connect a hardware device.
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</li>
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<li>
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<a href="{@docRoot}tools/help/android-monitor.html#displaying">Display Android Monitor</a>.
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</li>
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<li>Click the <strong>Network</strong> tab.
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</li>
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<li>Open an app project and <a href=
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"{@docRoot}tools/building/building-studio.html#RunningApp">run it</a> on the hardware device.
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</li>
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<li>To start the Network Monitor, click Pause <img src="{@docRoot}images/tools/am-ipause.png"
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style="vertical-align:sub;margin:0;height:17px" alt="Pause icon" /> to
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deselect it.
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</li>
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<p>
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Any network traffic begins to appear in the Network Monitor:
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</p>
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<img src="{@docRoot}images/tools/am-networkmon.png" style="vertical-align:sub;margin:0;width:450px" />
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<p>
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The Network Monitor adds up the amount of time it takes for the device to transmit and receive
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kilobytes of data.
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The y-axis is in kilobytes per second. The x-axis starts with seconds, and then minutes and
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seconds, and so on.
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</p>
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<li>To stop the Network Monitor, click Pause <img src="{@docRoot}images/tools/am-ipause.png"
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style="vertical-align:sub;margin:0;height:17px" alt="Pause icon" /> again to
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select it.
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</li>
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</ol> |