The latest articles on DEV Community by codeblogs (@codeblogs). https://dev.to/codeblogs https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F516545%2Fd8126dfa-10ed-48e4-8c27-a7a18aec1528.png https://dev.to/codeblogs en codeblogs Fri, 24 Sep 2021 10:23:21 +0000 https://dev.to/codeblogs/android-development-core-questions-13a6 https://dev.to/codeblogs/android-development-core-questions-13a6 <h1> What are android applications components ? :- </h1> <p>All android app components are the essential blocks, and all these components are loosely coupled by Manifest (AndroidManifest.xml) file. these entry point may be system or a user can enter our app. Here is four types of android application components as shown in bellow</p> <h1> Types of Components :- </h1> <p>1) Activities<br> 2) Services<br> 3) Broadcast receivers<br> 4) Components Providers</p> <h1> <a href="https://developer.android.com/reference/android/app/Activity">Activities :-</a> </h1> <p>An activities nothing just a screen it provides the window in which the app draws ui’s and this is the entry point of the interacting with the users. An activity presents a single screen with a user interface for example whatsapp app might have one activity that show the users list on screen and another activity where we chat personal or group chat.</p> <h1> <a href="https://developer.android.com/reference/android/app/Service">Services</a> </h1> <p>In android Services are specialy component that facilitates to run in the background in order to perform long running operations tasks. The main purpose of a service is to ensure that the application remains active in the background so that the user can operate multiple applications at the same time.</p> <h1> <a href="https://developer.android.com/reference/android/content/BroadcastReceiver">Broadcast receivers</a> </h1> <p>A broadcast receivers in android act as background functionalities as services and it will pass the data between activities. A broadcast receiver is an android component that allows an application to respond the message and that are broadcast by the android operating system or an android application.</p> <h1> Components Providers </h1> <p>Acomponent providers in android can help an application manage access to data store by itself, store by other apps, and provide a way to share data with other apps and they encapsulate data, provide data mechanism to defining data security. Content provider in android manage access to a central repository of data and this component provider is a part of an android application. content providers are two types :-<br> A) Directory<br> B) id based URIs</p> <h1> <a href="https://codewith-fun.medium.com/android-core-interview-questions-part-1-b5d356056432">Read my articles on medium</a> </h1> android kotlin java devops