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Android High Performance Programming

You're reading from   Android High Performance Programming Build fast and efficient Android apps that run as reliably as clockwork in a multi-device world

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Product type Paperback
Published in Aug 2016
Publisher Packt
ISBN-13 9781785288951
Length 412 pages
Edition 1st Edition
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Authors (2):
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Enrique López Mañas Enrique López Mañas
Author Profile Icon Enrique López Mañas
Enrique López Mañas
Diego Grancini Diego Grancini
Author Profile Icon Diego Grancini
Diego Grancini
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Table of Contents (12) Chapters Close

Preface 1. Introduction: Why High Performance? FREE CHAPTER 2. Efficient Debugging 3. Building Layouts 4. Memory 5. Multithreading 6. Networking 7. Security 8. Optimizing Battery Consumption 9. Native Coding in Android 10. Performance Tips Index

Profiling with Hierarchy Viewer


Hierarchy Viewer provides a powerful profiler to analyze and optimize the application. To proceed with the profiling, click the icon, Profile Node. If the hierarchy of your view is quite large, it might take some time until it is initialized.

At this point, all the views in your hierarchy will get three dots:

  • The left dot represents the Draw process of the rendering pipeline

  • The middle dot represents the Layout phase

  • The right dot represents the Execute phase

Each dot color within a view has a different meaning:

  • A green dot means that the view is rendering faster than at least half of the other views. Generally, a green color can be seen as a high-performing view.

  • A yellow dot means that the view is rendering faster than the bottom half of the views in the hierarchy. This is only relative, but yellow colors might require us to take a look at the view.

  • Red means the view is among the slowest half of views. Generally, we want to take a look at these values.

How can...

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