Create an Uber Clone in 7 Days

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Create an Uber Clone in 7 Days Shai Almog 2018-07-22 Contents Preface. 1 Audience. 1 Prerequisites . 2 What you don’t need to Know . 2 Get this Book for FREE! . 2 How to Read this Book? . 3 Software Prerequisites . 4 Getting Help. 4 Using the Code. 4 Important Notice About Cloning and Copyrights . 5 Thanks and Acknowledgments . 5 1. Hello World . 7 1.1. What’s Codename One?. 7 1.1.1. Build Cloud . 8 1.2. Getting Started. 8 1.2.1. New Project. 8 Running . 11 The Source Code . 12 1.2.2. Run on Device . 18 Signing . 18 Build and Install . 25 1.3. How Does it Work? . 26 1.3.1. Mobile is Different . 26 Density (DPI/PPI) . 27 1.3.2. Performance. 29 App Size . 29 Power Drain . 30 1.3.3. Sandbox and Permissions . 30 1.4. Summary . 31 2. Core Concepts . 33 2.1. The Todo App. 33 2.2. Layouts and Hierarchy . 35 2.2.1. Layout Managers. 44 Terse Syntax . 47 2.2.2. Styles . 47 Designer Tool . 50 2.2.3. Event Handling . 68 Observers and Event Types . 69 Event Dispatch Thread. 71 2.2.4. IO and Storage . 72 2.3. Summary . 74 3. Spring Boot Overview . 75 3.1. What’s Spring Boot? . 75 3.2. Why Spring Boot . 76 3.3. What will we Use? . 76 3.4. Summary . 77 4. Day 1: The Mockup. 79 4.1. Deconstructing Uber . 79 4.1.1. Portrait Only UI . 81 4.1.2. iOS and Android Look Almost Identical . 81 4.1.3. Inconsistent Titles and Simple Design . 82 4.2. The UI Elements ..

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Codename One and Phonegap, a Performance Comparison
Codename One and PhoneGap, a performance comparison Andreas Arnesson Faculty of Computing Blekinge Institute of Technology SE-371 79 Karlskrona Sweden 1 Contact Information: Author: Andreas Arnesson [email protected] University advisor: Nina Dzamashvili Fogelström Department of Software Engineering Faculty of Computing Internet : www.bth.se Blekinge Institute of Technology Phone : +46 455 38 50 00 SE-371 79 Karlskrona Sweden Fax : +46 455 38 50 57 2 ABSTRACT Creating smartphone applications for more than one operating system requires knowledge of several code languages, more code maintenance, higher development costs and longer development time. To make this easier cross-platform tools (CPTs) exist. But using a CPT can decrease performance of the application. Applications with low performance are more likely to get uninstalled and this makes developers lose income. There are four main CPT approaches hybrid, interpreter, web and cross-compiler. Each has different disadvantages .and advantages. This study will examine the performance difference between two CPTs, Codename One and PhoneGap. The performance measurements, CPU load, memory usage, energy consumption, time execution and application size will be made to compare the CPTs. If cross-compilers have better performance than other CPT approaches will also be investigated. An experiment where three applications are created with native Android, Codename One and PhoneGap will be made and performance measurements will be made. A literature study with research from IEEE and Engineering village will be conducted on different CPT approaches. PhoneGap performed best with shortest execution time, least energy consumption and least CPU usage while Codename One had smallest application size and least memory usage.
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