Book Image

Android High Performance Programming

By : Emil Atanasov, Enrique López Mañas, Diego Grancini
Book Image

Android High Performance Programming

By: Emil Atanasov, Enrique López Mañas, Diego Grancini

Overview of this book

Performant applications are one of the key drivers of success in the mobile world. Users may abandon an app if it runs slowly. Learning how to build applications that balance speed and performance with functionality and UX can be a challenge; however, it's now more important than ever to get that balance right. Android High Performance will start you thinking about how to wring the most from any hardware your app is installed on, so you can increase your reach and engagement. The book begins by providing an introduction to state–of-the-art Android techniques and the importance of performance in an Android application. Then, we will explain the Android SDK tools regularly used to debug and profile Android applications. We will also learn about some advanced topics such as building layouts, multithreading, networking, and security. Battery life is one of the biggest bottlenecks in applications; and this book will show typical examples of code that exhausts battery life, how to prevent this, and how to measure battery consumption from an application in every kind of situation to ensure your apps don’t drain more than they should. This book explains techniques for building optimized and efficient systems that do not drain the battery, cause memory leaks, or slow down with time.
Table of Contents (17 chapters)
Android High Performance Programming
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Running a trace


When we have added the trace library to our application, it will block on startup until it can connect to the trace receiver of Android Studio. That means you need to remove the trace library when you are done with the profiler, since it will lead to a useless render.

In order to start a trace, just run and deploy your application. A blank screen will first be prompted while it is waiting for the trace receiver to connect. To enable it, go to the CPU/GPU tab of the DDMS, and click on the red trace button, which you can find on the left side of the GPU tab ().

When the tracing starts, the application unlocks and we can interact with it. When we are done with the tracing, we need to click on the trace button again to stop the tracing process. When the file has been written, it will be opened.