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Android Study Jams Session 2 - Layouts XML Gradle Code Review
- 1. This work is licensed under the Apache 2.0 License Android Study Jams Session 2 - 24th Dec 2021 Rishi Balamurugan, Facilitator Pranshu Aggarwal, Mentor GDSC Shiv Nadar University
- 2. This work is licensed under the Apache 2.0 License Session Outline: ● Basic concepts overview ○ Layouts ○ XML ○ Gradle ● Code Review ○ Tiptime ○ Affirmations ● Q & A
- 3. This work is licensed under the Apache 2.0 License Some important concepts
- 4. This work is licensed under the Apache 2.0 License Layouts ● Defines the structure for user interface ● Consists of views and viewgroups ● Can be declared in two ways: ○ Declare in XML ○ Instantiate at runtime
- 5. This work is licensed under the Apache 2.0 License ● XML stands for Extended Markup Language. ● It’s mainly used to describe data ● Uses ● Used to store and organize UI-related data in Android dev XML Empty XML tag Example XML
- 6. This work is licensed under the Apache 2.0 License ● Layout files ● Android Manifest file ● Strings file ● Theme ● Drawable ● Colors Different types of XML in Android:
- 7. This work is licensed under the Apache 2.0 License Gradle is a build system that is used to automate building, testing, deployment, etc. Main modules: ● Top-level build.gradle ● Module-level build.gradle ● settings.gradle ● gradle.properties and local.properties Gradle:
- 8. Join at slido.com #798822 ⓘ Start presenting to display the joining instructions on this slide.
- 9. Which of the following can be considered as a View? ⓘ Start presenting to display the poll results on this slide.
- 10. What does a gradle do? ⓘ Start presenting to display the poll results on this slide.
- 11. This work is licensed under the Apache 2.0 License Code Review
- 12. Audience Q&A Session ⓘ Start presenting to display the audience questions on this slide.
- 13. This work is licensed under the Apache 2.0 License THANK YOU and have fun helping your communities become Android developers!
Editor's Notes
- How are you doing today? Give thumbs up or say in chat
- Q&A at end, feel free to put questions in the chat Pranshu will address them Ppl with coding experience have patience Ppl without, go thru course and recording
- What I’m gonna discuss is compiled info and it’ll take some time to find on course and net
- UI in activity A View usually draws something the user can see and interact with. Viewgroup - multiple view; layout Declare UI elements in XML. straightforward vocabulary that corresponds to the View classes and subclasses Android Studio's Layout Editor - drag & drop Instantiate layout elements at runtime. Create objects programmatically. OOPS instantiate
- tags not predefined (define, implement) Three types of tags: open, close, empty Element between open & close tags Only contains tags, need to be invoked when implementing Helps in separating UI from logic Simplified text view; tag start, end; attribute; aka empty tag Few set of rules, very simple, info on net Seems like a lot of info to take in, but is much simpler
- You would have already learnt about this through the course It might seem like a lot of info, but you’ll slowly get used to it Manifest: Describes essential info; package name, components like activities, etc Permissions; coz android user security is priority; It asks for info upfront Strings: Contains texts for all the TextView widgets; different languages; replace all hardcoded text in the entire app Theme: Defines the base, customized themes & styles for UI Styles can customize how the views or widgets look on the UI Drawable: Provide graphics to elements like custom background for the buttons and its ripple effects; Various gradients can also be created. This also holds the vector graphics like icons. Except manifest, others are in res folder
- Generating an apk. Takes all the source files (java and XML) and applies appropriate tools, e.g., converts the java files into dex files and compresses into apk Dex files are just an intermediate file type before apk Top: function is to define the build configurations that will be applied to all the modules in the project Module: dependencies are defined and where the SDK versions are declared; specify app id; Sdk version is another name for android version; min and target Settings.gradle: located in the root project directory; tells Gradle which modules it should include when building your app include ‘:app’ Properties: wont use much; specifies settings for gradle itself
- 📣 This is Slido interaction slide, please don't delete it. ✅ Click on 'Present with Slido' and the joining instructions will appear when you get to this slide.
- 📣 This is Slido interaction slide, please don't delete it. ✅ Click on 'Present with Slido' and the poll will launch automatically when you get to this slide.
- 📣 This is Slido interaction slide, please don't delete it. ✅ Click on 'Present with Slido' and the poll will launch automatically when you get to this slide.
- 📣 This is Slido interaction slide, please don't delete it. ✅ Click on 'Present with Slido' and the questions from your audience will appear when you get to this slide.