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Working with menus in android

This article covers everything about implementing menus in android. Show popup menu's, popup list menu's, nesting menu items, context menu's, drop down menu's and setting menu item click listeners for all types.

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Implementing Snackbars with android

Snackbar is a lightweight-widget that we can use as an alternative to Toast. Snackbar is used to show messages to user at bottom of app screen with swiping enabled also contains an optional action button to perform user actions.

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WebView and WebKit in Android

WebView is an extended class of Android's View class. It allows us to display webpages in an application. Android WebView is a component that turns an application into a web application. It makes use of WebKit engine which implements a responsive design and loads pages from URL.

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Set in kotlin

Set is a generic unordered collection of elements that does not support duplicate elements. Null elements are also unique. A set contain only one null. Kotlin distinguishes between read-only and mutable sets.

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Exceptions in kotlin

An exception is an unwanted or unexpected event, which occurs during the execution of a program. In Kotlin, all exception classes are descendants of class Throwable. If exceptions are not handled, then It will throw an exception and will stop the execution of program.