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You're reading from  Android High Performance Programming

Product typeBook
Published inAug 2016
Reading LevelBeginner
PublisherPackt
ISBN-139781785288951
Edition1st Edition
Languages
Python
Tools
Android
Concepts
Android Development
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Authors (3):
Emil Atanasov
Emil Atanasov
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Emil Atanasov

Emil Atanasov is an IT consultant with broad experience in mobile technologies. He has been exploring the field of mobile development since 2006. Emil has a MSc in Media Informatics from RWTH Aachen University, Germany and a MSc in Computer Science from Sofia Unversity "St. Kliment Ohridsky", Bulgaria. He has worked for several huge USA companies and has been a freelancer for several years. Emil has experience in software design and development. He was involved in the process of redesigning, improving and creating a number of mobile apps. Currently, he is focused on the rapidly growing mobile sector and manages a great team of developers that provides software solutions to clients around the world. As an Android team leader and project manager, Emil was leading a team that was developing a part of the Nook Color firmware -a e-magazine/ e-book reader, which supports the proprietary Barnes & Nobel and some other e-book formats. He is one of the people behind the "Getting Started with Flurry Analytics" book. He also contributed largely to the book "Objective C Memory Management". "I want to thank my family and friends for being so cool. Thank you for supporting me even though I'm such a bizarre geeky person, who is spending most of the time in the digital world. Thank you, guys!"
Read more about Emil Atanasov

Enrique López Mañas
Enrique López Mañas
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Enrique López Mañas

Enrique Lpez Maas is a Google Developer Expert and independent IT consultant. He has been working with mobile technologies and learning from them since 2007. He is an avid contributor to the open source community and a FLOSS (Free Libre Open Source Software) kind of guy, being among the top 10 open source Java contributors in Germany. He is a part of the Google LaunchPad accelerator, where he participates in Google global initiatives to influence hundreds of the best startups from all around the globe. He is also a big data and machine learning aficionado. In his free time he rides his bike, take pictures, and travels until exhaustion. He also writes literature and enjoys all kinds of arts. He likes to write about himself in third person. You can follow him on Twitter (@eenriquelopez) to stay updated on his latest movements.
Read more about Enrique López Mañas

Diego Grancini
Diego Grancini
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Diego Grancini

Diego Grancini has a degree in telecommunications and IT engineering from Perugia University. He has developed his skills on Android development for more than six years leading and contributed to several projects, teaching and sharing his skills during his career. He joined Engineering Ingegneria Informatica S.P.A. after his degree, defining his own knowledge about Java and Android development working as the lead Android developer for years. Then he joined J.P. Morgan & Chase, strengthening his skills about security and performance in software development and Android platform in particular.
Read more about Diego Grancini

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Debugging the UI

We have focused until now on memory, threading, and the system aspects of Android. There is a more visual aspect that can also dramatically improve the performance of our application: the user interface (UI). Android provides a tool called Hierarchy Viewer to debug and optimize any UI designed for Android. Hierarchy Viewer provides a visual representation of the hierarchy of layouts of an application with information about the performance of each node that can be found on the layout. It provides a so-called Pixel Perfect window with magnified information of the display, in case a close look at pixels is required.

To run Hierarchy Viewer, we need first to connect our device or emulator. Note that, for security reasons, only devices running a developer version of the Android system will work with Hierarchy Viewer. When it has been connected, launch the hierarchyviewer program from the /tools directory. If you have not yet set up this directory as part of your system PATH, this...

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Android High Performance Programming
Published in: Aug 2016Publisher: PacktISBN-13: 9781785288951
© 2016 Packt Publishing Limited All Rights Reserved

Authors (3)

author image
Emil Atanasov

Emil Atanasov is an IT consultant with broad experience in mobile technologies. He has been exploring the field of mobile development since 2006. Emil has a MSc in Media Informatics from RWTH Aachen University, Germany and a MSc in Computer Science from Sofia Unversity "St. Kliment Ohridsky", Bulgaria. He has worked for several huge USA companies and has been a freelancer for several years. Emil has experience in software design and development. He was involved in the process of redesigning, improving and creating a number of mobile apps. Currently, he is focused on the rapidly growing mobile sector and manages a great team of developers that provides software solutions to clients around the world. As an Android team leader and project manager, Emil was leading a team that was developing a part of the Nook Color firmware -a e-magazine/ e-book reader, which supports the proprietary Barnes & Nobel and some other e-book formats. He is one of the people behind the "Getting Started with Flurry Analytics" book. He also contributed largely to the book "Objective C Memory Management". "I want to thank my family and friends for being so cool. Thank you for supporting me even though I'm such a bizarre geeky person, who is spending most of the time in the digital world. Thank you, guys!"
Read more about Emil Atanasov

author image
Enrique López Mañas

Enrique Lpez Maas is a Google Developer Expert and independent IT consultant. He has been working with mobile technologies and learning from them since 2007. He is an avid contributor to the open source community and a FLOSS (Free Libre Open Source Software) kind of guy, being among the top 10 open source Java contributors in Germany. He is a part of the Google LaunchPad accelerator, where he participates in Google global initiatives to influence hundreds of the best startups from all around the globe. He is also a big data and machine learning aficionado. In his free time he rides his bike, take pictures, and travels until exhaustion. He also writes literature and enjoys all kinds of arts. He likes to write about himself in third person. You can follow him on Twitter (@eenriquelopez) to stay updated on his latest movements.
Read more about Enrique López Mañas

author image
Diego Grancini

Diego Grancini has a degree in telecommunications and IT engineering from Perugia University. He has developed his skills on Android development for more than six years leading and contributed to several projects, teaching and sharing his skills during his career. He joined Engineering Ingegneria Informatica S.P.A. after his degree, defining his own knowledge about Java and Android development working as the lead Android developer for years. Then he joined J.P. Morgan & Chase, strengthening his skills about security and performance in software development and Android platform in particular.
Read more about Diego Grancini