to: /topic/performance/power/network/gather-data.html
- from: /training/performance/battery/network/index.html
to: /topic/performance/power/network/index.html
+- from: /training/articles/memory.html
+ to: /topic/performance/memory.html
+- from: /topic/performance/optimizing-view-hierarchies.html
+ to: /topic/performance/rendering/optimizing-view-hierarchies.html
# Redirects for the new [dac]/topic/libraries/ area
- title: Network Use and Battery Consumption
path: /topic/performance/power/network/index.html
section:
+ - title: Collecting Network Traffic Data
+ path: /topic/performance/power/network/gather-data.html
- title: Analyzing Data Traffic
path: /topic/performance/power/network/analyze-data.html
- title: Optimizing User-Initiated Network Use
path: /topic/performance/power/network/action-user-traffic.html
+ - title: Optimizing App-Initiated Network Use
+ path: topic/performance/power/network/action-app-traffic.html
- title: Optimizing Server-Initiated Network Use
path: /topic/performance/power/network/action-server-traffic.html
- title: Optimizing General Network Use
path: /topic/performance/power/network/action-any-traffic.html
- - title: Smaller Network Resources
- path: /topic/performance/power/smaller-resources.html
- title: Doze and App Standby
path: /training/monitoring-device-state/doze-standby.html
path_attributes:
value: Help ensure the device isn't depleting the battery when not in use.
- title: Battery Historian
path: /topic/performance/power/battery-historian.html
-- title: Reducing Overdraw
- path: /topic/performance/overdraw.html
-- title: Using the Profile GPU Tool
- path: /topic/performance/profile-gpu.html
+- title: Rendering
+ path: /topic/performance/rendering/index.html
+ path_attributes:
+ - name: description
+ value: Speed up your app's rendering
+ section:
+ - title: Reducing Overdraw
+ path: /topic/performance/rendering/overdraw.html
+ - title: Optimizing View Hierarchies
+ path: /topic/performance/rendering/optimizing-view-hierarchies.html
+ - title: Using the Profile GPU Tool
+ path: /topic/performance/rendering/profile-gpu.html
- title: Intelligent Job-Scheduling
path: /topic/performance/scheduling.html
+- title: Background Optimization
+ path: /topic/performance/background-optimization.html
+- title: Reducing APK Size
+ path: /topic/performance/reduce-apk-size.html
- title: Reducing Image Download Sizes
path: /topic/performance/network-xfer.html
- title: Launch-Time Performance
path: /topic/performance/launch-time.html
- title: Better Performance through Threading
path: /topic/performance/threads.html
-- title: Optimizing View Hierarchies
- path: /topic/performance/optimizing-view-hierarchies.html
-- title: Background Optimization
- path: /topic/performance/background-optimization.html
-- title: Reducing APK Size
- path: /topic/performance/reduce-apk-size.html
+- title: Manage Your App's Memory
+ path: /topic/performance/memory.html
+- title: Overview of Memory Managemement
+ path: /topic/performance/memory-overview.html
+ path_attributes:
+ - name: description
+ value: How to keep your app's memory footprint small in order to improve performance on a variety of mobile devices.
+
-page.title=Performance
+page.title=Performance and Power
page.article=true
page.metaDescription=Improve your app's performance by learning how to optimize power consumption, launch times, and other important areas of performance.
page.title=Overview of Android Memory Management
page.tags=ram,memory,paging,mmap
-page.article=true
-@jd:body
+@jd:body
-<div id="tb-wrapper">
-<div id="tb">
+<div id="qv-wrapper">
+<div id="qv">
<h2>In this document</h2>
<ol class="nolist">
can be killed, see the
<a href="{@docRoot}guide/components/processes-and-threads.html">Processes and Threads</a>
guide.
-</p>
\ No newline at end of file
+</p>
page.title=Manage Your App's Memory
page.tags=ram,low memory,OutOfMemoryError,onTrimMemory
-page.article=true
-@jd:body
+@jd:body
-<div id="tb-wrapper">
-<div id="tb">
+<div id="qv-wrapper">
+<div id="qv">
<h2>In this document</h2>
-<ol class="nolist">
+<ol>
<li><a href="#monitor">Monitor Available Memory and Memory Usage</a>
- <ol>
+ <ul>
<li><a href="#AnalyzeRam">Tools for analyzing RAM usage</a></li>
<li><a href="#release">Release memory in response to events</a></li>
<li><a href="#CheckHowMuchMemory">Check how much memory you should use</a></li>
- </ol>
+ </ul>
</li>
- <li><a href="#code">Use More Efficient Code Constructst</a>
- <ol>
+ <li><a href="#code">Use More Efficient Code Constructs</a>
+ <ul>
<li><a href="#Services">Use services sparingly</a></li>
<li><a href="#DataContainers">Use optimized data containers</a></li>
<li><a href="#Abstractions">Be careful with code abstractions</a></li>
<li><a href="#NanoProto">Use nano protobufs for serialized data</a></li>
<li><a href="#churn">Avoid memory churn</a></li>
- </ol>
+ </ul>
</li>
<li><a href="#remove">Remove Memory-Intensive Resources and Libraries</a>
- <ol>
+ <ul>
<li><a href="#reduce">Reduce overall APK size</a></li>
<li><a href="#DependencyInjection">Avoid dependency injection frameworks</a></li>
<li><a href="#ExternalLibs">Be careful about using external libraries</a></li>
- </ol>
+ </ul>
</li>
</ol>
<h2>See Also</h2>
You should generally avoid use of persistent services because of
the on-going demands they place on available memory. Instead, we
recommend that you use an alternative implementation
- such as {@llink android.app.job.JobScheduler}. For more information about
- how to use {@llink android.app.job.JobScheduler} to schedule background
+ such as {@link android.app.job.JobScheduler}. For more information about
+ how to use {@link android.app.job.JobScheduler} to schedule background
processes, see
<a href="/topic/performance/background-optimization.html">Background Optimizations</a>.
<p>
--- /dev/null
+page.title=Rendering
+page.article=true
+
+page.tags=battery
+page.metaDescription=Learn how to optimize your app's rendering performance.
+
+@jd:body
+
+
+<iframe width="448" height="252"
+ src="//www.youtube.com/embed/wIy8g8yNhNk?autohide=1&showinfo=0"
+ frameborder="0" allowfullscreen=""
+ style="float: right; margin: 0 0 20px 20px;"></iframe>
+
+<p>
+ A key aspect of your app that influences your users' perception of quality is
+ the smoothness with which it renders images and text to the screen. It is
+ important to avoid jank and sluggish responsiveness when your app is drawing
+ to the screen.
+</p>
+
+<p>
+ This section helps you learn several ways to optimize your app's rendering
+ performance: reducing overdraw, optimizing view hierarchies, and taking
+ advantage of the Profile GPU tool.
+</p>
+
+<h2>Rendering Actions</h2>
+
+<dl>
+ <dt>
+ <strong><a href="overdraw.html">
+ Reducing Overdraw</a></strong>
+ </dt>
+ <dd>
+ Minimize the number of times you app redraws the same pixel in a single
+ frame.
+ </dd>
+
+ <dt>
+ <strong><a href="profile-gpu.html">
+ Optimizing View Hierarchies</a></strong>
+ </dt>
+ <dd>
+ Make sure your layout and measurement are executing efficiently, and
+ avoid double taxation.
+ </dd>
+
+
+ <dt>
+ <strong><a href="profile-gpu.html">
+ Using the Profile GPU Tool</a></strong>
+ </dt>
+ <dd>
+ Take advantage of this on-device tool to identify bottlenecks that
+ may be slowing your app's rendering down.
+ </dd>
+
+
+</dl>
path: /training/scheduling/wakelock.html
- title: Scheduling Repeating Alarms
path: /training/scheduling/alarms.html
-
- title: Best Practices for Performance
path: /training/best-performance.html
section:
- - title: Managing Your App's Memory
- path: /training/articles/memory.html
- path_attributes:
- - name: description
- value: How to keep your app's memory footprint small in order to improve performance on a variety of mobile devices.
- title: Performance Tips
path: /training/articles/perf-tips.html
path_attributes:
- name: description
value: How to minimize the amount of power your app requires by adapting to current power conditions and performing power-hungry tasks at proper intervals.
section:
- - title: Reducing Network Battery Drain
- path: /training/performance/battery/network/index.html
- section:
- - title: Collecting Network Traffic Data
- path: /training/performance/battery/network/gather-data.html
- - title: Analyzing Network Traffic Data
- path: /training/performance/battery/network/analyze-data.html
- - title: Optimizing User-Initiated Network Use
- path: /training/performance/battery/network/action-user-traffic.html
- - title: Optimizing App-Initiated Network Use
- path: /training/performance/battery/network/action-app-traffic.html
- - title: Optimizing Server-Initiated Network Use
- path: /training/performance/battery/network/action-server-traffic.html
- - title: Optimizing General Network Use
- path: /training/performance/battery/network/action-any-traffic.html
- - title: Optimizing for Doze and App Standby
- path: /training/monitoring-device-state/doze-standby.html
- title: Monitoring the Battery Level and Charging State
path: /training/monitoring-device-state/battery-monitoring.html
path_attributes:
performance effects. Choosing the right algorithms and data structures should always be your
priority, but is outside the scope of this document. You should use the tips in this document
as general coding practices that you can incorporate into your habits for general code
-efficiency.</p>
+efficiency.
+</p>
<p>There are two basic rules for writing efficient code:</p>
<ul>
without.</p>
<p>To ensure your app performs well across a wide variety of devices, ensure
-your code is efficient at all levels and agressively optimize your performance.</p>
-
+your code is efficient at all levels and aggressively optimize your performance.</p>
<h2 id="ObjectCreation">Avoid Creating Unnecessary Objects</h2>
<p>These classes and articles help you build an app that's smooth, responsive,
-and uses as little battery as possible.</p>
\ No newline at end of file
+and uses as little battery as possible.</p>
+
+<p>Along with this section, you can find additional information about optimizing
+your app in the <a href="/topic/performance/index.html">Performance and
+Power</a> section.</p>
+
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