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
About the Authors
About the Reviewer

Capturing an APK file

There are different methods we can use to capture an APK file. We will present in this book three of them, available at the time of writing (last quarter, 2015). Please note that the information provided in this chapter is only for educational purposes. There are some rules and legislation that need to be observed when performing reverse engineering, which will be discussed later.

Pulling a file from the device

If our device is rooted or we are using an emulator with Google Play Services installed, it is possible to pull an APK that has been installed. Please note that a rooted device can be targeted by malicious applications and attackers. If you are going to root your device there is a lot of free information available on the Internet.

When the application has been installed from the Play Store or an alternative market, you will first need to connect the adb to your computer. First you need to determine the package name of the target application:

adb shell pm list packages...