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diff --git a/docs/html/training/improving-layouts/index.jd b/docs/html/training/improving-layouts/index.jd new file mode 100644 index 0000000..4cc6963 --- /dev/null +++ b/docs/html/training/improving-layouts/index.jd @@ -0,0 +1,58 @@ +page.title=Improving Performance of Layouts + +trainingnavtop=true +startpage=true +next.title=Optimizing Layout +next.link=optimizing-layout.html + +@jd:body + +<div id="tb-wrapper"> +<div id="tb"> + +<!-- Required platform, tools, add-ons, devices, knowledge, etc. --> +<h2>Dependencies and prerequisites</h2> +<ul> + <li>Android 1.5 (API Level 3) or higher</li> +</ul> + +<!-- related docs (NOT javadocs) --> +<h2>You should also read</h2> +<ul> + <li><a href="{@docRoot}guide/topics/ui/declaring-layout.html">XML Layouts</a></li> +</ul> + +</div> +</div> + + + +<p>Layouts are a key part of Android applications that directly affect the user experience. If +implemented poorly, your layout can lead to a memory hungry application with slow UIs. The Android +SDK includes tools to help you identify problems in your layout performance, which when combined the +lessons here, you will be able to implement smooth scrolling interfaces with a minimum memory +footprint.</p> + + + +<h2>Lessons</h2> + +<dl> + <dt><b><a href="optimizing-layout.html">Optimizing Layout Hierarchies</a></b></dt> + <dd>In the same way a complex web page can slow down load time, your layout hierarchy +if too complex can also cause performance problems. This lesson shows how you can use SDK tools +to inspect your layout and discover performance bottlenecks.</dd> + <dt><b><a href="reusing-layouts.html">Re-using Layouts with <include/></a></b></dt> + <dd>If your application UI repeats certain layout constructs in multiple places, this lesson +shows you how to create efficient, re-usable layout constructs, then include them in the appropriate +UI layouts.</dd> + <dt><b><a href="loading-ondemand.html">Loading Views On Demand</a></b></dt> + <dd>Beyond simply including one layout component within another layout, you might want to +make the included layout visible only when it's needed, sometime after the activity is running. +This lesson shows how you can improve your layout's initialization performance by loading +portions of your layout on demand.</dd> + <dt><b><a href="smooth-scrolling.html">Making ListView Scrolling Smooth</a></b></dt> + <dd>If you've built an instance of {@link android.widget.ListView} that contains complex or +data-heavy content in each list item, the scroll performance of the list might suffer. This +lesson provides some tips about how you can make your scrolling performance more smooth.</dd> +</dl>
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