Introduction_into_making_Android_applications.pdf

Transcript

1. Introduction into making Android applications
2. About me • I am the student of Zespół Szkół nr 10 • I have about 5 years of experience in Android development Hoptimist Quick DronE
3. Why Android? Advantages 1. Free 2. Popularity 3. Community 4. Open source 5. Customization 6. Google integration Disadvantages • Fragmentation (a lot of different devices and system versions) • A lot of processes and services • Fight with the fake apps
4. The goals • I want you to show the basics steps and advices how to create and publish the first Android app. 1. Languages 2. Devices 3. Configuration 4. Files 5. Useful sources 6. Environment 7. Good practices 8. Building 9. Publishing
5. Code base Code editor Language
6. Devices Production side Deployment side Linux / MacOS / Windows Emulator Physicall device Firebase cloud Emulators
7. Configuration Config.gradle • SDK (Software Development Kit) • Target Version (e.g. Lollipop) • Dependecies (Libraries) • System configuration • App’s version Manifest.xml • Icon • Name • Activities (Classes) • Services • Package
8. Config.gradle
9. Manifest.xml
10. Files .xml • Texts • Graphics • Layouts • Animations • Configurations .kt / .java • Classes • Interfaces • Enums • Constants
11. Useful sources • The good place where you can find awesome libraries is Android Arsenal -> https://android-arsenal.com/. This really helps to start with awesome project without great experience and skill. • To learn about good practices and advanced development visit CodePath -> https://guides.codepath.com/android • If you need an inspiration or excellent design you should visit -> https://www.uplabs.com/android
12. Environment • Android Studio is based on IntelIJ so most of the layouts and functionalities are similar. • The first app you can create and run without any programming knowledge. • The editor simplify the usage of Firebase Cloud or Google API so it is highly recommend to use them for easier development.
13. Coding Debug and performance Files tree Code Tools Build section
14. Designing Files tree Components Preview Properties Components Tree Design tools
15. Good practices • If you have some experience in Android will be nicely to adjust the code in way the other people find it fast and readable. • Consider MVP that separates view code from logic • Care about Context and Activity classes (RAM usage) • Use Fragments instead of many Activites • Use Constraint Layouts • Write small classes • Move to the AsyncTask code that uses much RAM or CPU • Use dependency injection like Dagger2 • Follow Google’s directions
16. Building • In order to deploy (install on device) your production’s version you have to do three steps: 1. Create the keystore (developer id) and connect to the app 2. Generate an apk file without compilation errors 3. Install manually or publish on Google Play Store
17. Publishing • If you want to upload your app on the Google Play Store you have to: • Create developer account • Pay for it once • Generate correct apk file (package and keystore are important) • Upload an apk file • Fulfill the descriptions and add the graphics
19. ...and • This is not the end. To have a successful project with a lot of downloads it is still a lot of work to do. • Follow app behavior and users reviews. • React on the found bugs. • Keep up fresh design. • Put on notifications and interaction with user. Most of it you can automate with Firebase platform.
20. Thank you  Tomasz Kądziołka Follow me on: tkadziolka.pl github.com/tmaxxdd
21. Thank you  Tomasz Kądziołka Follow me on: tkadziolka.pl github.com/tmaxxdd