Merge "Doc change: deleting tips section that was merged into index.jd"

page.title=Debugging Tips

@jd:body

<p>While debugging, keep these helpful tips in mind to help you figure out common problems with your 

applications:</p>

<dl>

<dt><strong>Dump the stack trace</strong></dt>

<dd>To obtain a stack dump from emulator, you can log

in with <code>adb shell</code>, use <code>ps</code> to find the process you

want, and then <code>kill -3</code>. The stack trace appears in the log file.

</dd>

<dt><strong>Display useful info on the emulator screen</strong></dt>

<dd>The device can display useful information such as CPU usage or highlights

around redrawn areas. Turn these features on and off in the developer settings

window as described in <a href="{@docRoot}guide/developing/debugging/debugging-devtools.html">

Debugging with the Dev Tools App</a>.

</dd>

<dt><strong>Get application and system state information from the emulator</strong></dt>

<dd>You can access dumpstate information from the <code>adb shell</code> commands. See 

<a href="{@docRoot}guide/developing/tools/adb.html#dumpsys">dumpsys and

dumpstate</a> on the adb topic page.</dd>

<dt><strong>Get wireless connectivity information</strong></dt>

<dd>You can get information about wireless connectivity using DDMS. 

From the <strong>Device</strong> menu, select <strong>Dump

radio state</strong>.</dd>

<dt><strong>Log trace data</strong></dt>

<dd>You can log method calls and other tracing data in an activity by calling

{@link android.os.Debug#startMethodTracing(String) startMethodTracing()}. See <a

href="{@docRoot}guide/developing/debugging/debugging-tracing.html">Profiling with Traceview and

dmtracedump</a> for details. </dd>

<dt><strong>Log radio data</strong></dt>

<dd>By default, radio information is not logged to the system (it is a lot of

data). However, you can enable radio logging using the following commands:

<pre class="no-pretty-print">

adb shell

logcat -b radio

</pre>

</dd>

<dt><strong>Capture screenshots</strong></dt>

<dd>The Dalvik Debug Monitor Server (DDMS) can capture screenshots from the emulator. Select

<strong>Device > Screen capture</strong>.</dd>

<dt><strong>Use debugging helper classes</strong></dt>

<dd>Android provides debug helper classes such as {@link android.util.Log

    util.Log} and {@link android.os.Debug} for your convenience. </dd>

</dl>

<p>See the <a href="{@docRoot}resources/faq/troubleshooting.html">Troubleshooting</a> document

for answers to some common developing and debugging issues.</p>