Android
- 2. WHAT WE WILL LEARN TODAY What is Android Android platform overview Android app fundamentals What is Android studio Design using android studio What we will learn today What is android Android platform overview Android application Android app overview Android app fundamentals App design Android studio
- 3. What is Android Android is the world’s most popular and domi nant mobile operating system. It is based on Linux kernel 3.4/3.10 ( depending on device) and is open-source (with proprietary bits). It runs on a wide variety of hardware, including smartphones, smart watches, cars, televisions, digital cameras, game consoles and more. It was founded by Andy Rubin and three others in October 2003 and got acquired by Google in August 2005.
- 4. ANDROID STUDIO After many releases of ADT plugin for Eclipse, Google decided to build its own IDE for Android Application Development. In December, 2014 Google released its first stable build of Android Studio v1.0 From the date of its stable release, Android Studio has been the official development tool that supports all Android SDKs for android application development.
- 5. FEATURES OF ANDROID STUDIO GRADLE Gradle is a build system, which is responsible for code compilation, testing, deployment and conversion of the code into .dex files and hence running the app on the device. As Android Studio comes with Gradle system pre- installed, there is no need to install additional runtime softwares to build our project. Whenever you click on Run button in android studio, a gradle task automatically triggers and starts building the project and after gradle completes its task, app starts running in AVD or in the connected device.
- 6. API Integration In Android Studio, various APIs are already configured that can be directly used in application development. Additional APIs can also be integrated in the Android Studio (see image below). To add or remove one/more libraries you can click on the Green + and Red – button on right side of it.
- 7. Dynamic Layout View Layout editor allows drag and drop functionality to build user interface same as Eclipse. Additionally it also provides with a preview of the UI while you edit the XML.
- 8. Build in Samples Developers get readymade code samples available which can be used directly for practicing and app development.
- 9. Version Control Android Studio has Github and Bitbucket already integrated in it. So your code can directly be pushed to online repositories like Github or BitBucket through Android Studio. Cloud Integration and Firebase With the Google App Engine you can connect to the different Google Cloud services with minimum effort straight from the Android Studio. And by using the Firebase Assistant you can easily connect to Firebase to use its quick Authentication, Notification and other features. Documentation View For every suggested class, interface or code, you can refer its documentation to get more help in a separate popup window in the code editor itself.
- 10. Views View is the basic building block of UI(User Interface) in android. View refers to the android.view.View class, which is the super class for all the GUI components like TextView, ImageView, Button etc. Commonly used android views 1. TextView 2. EditText 3. Button 4. ImageView 5. ImageButton 6. CheckBox 7. RadioButton 8. ListView 9. GridView 10.Toast
- 12. Layouts Android Layouts are used to arrange the views on the device's screen. ViewGroup is the base class for all the layouts and view containers. The ViewGroup is the base class for Layouts in android, like LinearLayout, RelativeLayout, FrameLayout etc. Commonly used layouts 1. LineraLayout 2. RelativeLayout 3. Web View 4. TabularLayout 5. ListView 6. GridView
- 13. Activity Activity is nothing but a java class in Android which has some pre-defined functions which are triggered at different App states, which we can override to perform anything we want. Activity class provides us with empty functions allowing us to be the controller of everything. There can be multiple Activities in Android, but there can be only one Main Activity. For example, In Java programming (or programming languages like C or C++), the execution of the program always begin with main() method. Similarly, when the user presses the App icon, the Main Activity is called and the execution starts from the onCreate() method of the Activity class.
- 15. Intents An Intent is a messaging object that you can use to request an action from an app component. An Intent is basically an intention to do an action. It's a way to communicate between Android components to request an action from a component, by different components. It's like a message that Android listens for and then react accordingly by identifying and invoking the app's appropriate component (like an Activity, Service, Content Provider, etc.). It can be within that same app or some other app as well.
- 17. ADVANTAGES Faster deployment of fresh builds More accurate programming Faster programming and Testing Inclusive app development Better app indexing
- 18. Disadvantages Gradle building is slow Parsing is slow It causes sync error It wasn’t built from scratch Gradle sync failed : broken pipe
- 19. Conclusion
- 21. QUERIES??