Android Tutorials

Android Architecture Components , introduced in Android Jetpack, are a collection of libraries that help you design robust, testable, and maintainable apps. These components make it easier to encapsulate code and resources for things like managing data persistence, lifecycle changes, and inter-process communication (IPC). The architecture components help you design your app in a way that is adaptable to different configurations and different devices without adding unnecessary complexity. Types of Android Components 1.  Activity lifecycle in Android 2.  Services in Android 3.  Broadcast Receiver in Android 4.  Content Provider in Android Components Description Activity They dictate the UI and handle the user interaction to the smart phone screen. Services They handle background processing associated with an application. Broadcast Receiver They handle communication between Android OS and applications. Content Provider They handle data and database management issues. ...

A layout defines the structure for a user interface in your app, such as in an activity. All elements in the layout are built using a hierarchy of View and ViewGroup objects. A View usually draws something the user can see and interact with.  To define a layout, create an XML file with a root View element. Then, add one or more View or ViewGroup objects to the hierarchy. Each view is described by two things: its position in the hierarchy and its appearance.  Types of Layouts in Android   Linear Layout in Android  Relative Layout in Android   Table Layout in Android   Absolute Layout in Android  Frame Layout in Android  List View in Android  Grid Layout in Android 1. Linear Layout in Android A Linear Layout is a view group that aligns all children in a single direction, vertically or horizontally.   2. Relative Layout -  Suppose we want to have three buttons in our application that are of the same type, such as 'Text view,' where the...

Android components are the essential building blocks of an Android application. These components are loosely coupled by the application manifest file AndroidManifest.xml that describes each application component and how they interact. Android Components have four types: 1. Android A ctivities   2. Android Services   3. Content Providers 4 . B roadcast receivers Components Description Activity They dictate the UI and handle the user interaction to the smart phone screen. Services They handle background processing associated with an application. Broadcast Receiver They handle communication between Android OS and applications. Content Provider They handle data and database management issues. Source: LearnVern.Com