Android Activity Launch Modes

Limit the access to broad storage — Basic Principles 1. Better Attribution —The system knows which apps created by the witch files. — Helps the user better manage the storage — Makes sure that when the app uninstalled all of its content is also removed unless the user explicitly wants it kept. 2. Protecting app date — Internal app…

Iterator pattern is a design pattern in which an iterator is used to traverse a container and access the container’s elements. Observer pattern is a software design pattern in which an object, called the subject, maintains a list of its dependents, called observers, and notifies them automatically of any state changes, usually by calling one of their methods.

Reactive programming Reactive programming is all about responding to value changes. ReactiveX is An API for asynchronous programming with observable streams. ReactiveX is a combination of the best ideas from the Observer pattern, the Iterator pattern, and functional programming. Why? 1. RxJava simplifies development because it raises the level of abstraction…

Cargo Cult Programming cargo cult programmer may apply when anyone inexperienced with the problem at hand copies some program code from one place to another with little understanding of how it works or whether it is required. Reactive Programming is all about responding to value changes Functional Programming is a…