Skip to main content

What is the Core Building Blocks of Android?

The core building blocks or fundamental components of android are activities, views, intents, services, content providers, fragments and AndroidManifest.

Activity:

An activity is a class that represents a single screen in application.

View:

A view is the User Interface element such as button, label, text field etc. Anything that you see is a view.

Intent:

Intent is used to invoke components. It is mainly used to:

=> Start the service

=> Launch an activity

=> Display a web page

=> Display a list of contacts

=> Broadcast a message

=> Dial a phone call etc.

For Example:

    Intent intent=new Intent(Intent.ACTION_VIEW);  
    intent.setData(Uri.parse("https://moonyincoding.blogspot.com"));  
    startActivity(intent);   

Service:

Service is a background process that can run for a long time. 

Content Provider:

Content Providers are used to share data between the applications. 

Fragment:

Fragments are like parts of activity. An activity can display one or more fragments on the screen at the same time.

AndroidManifest

It contains informations about activities, content providers, permissions etc.

Comments

Post a Comment

Popular posts from this blog

What is android?

  Android is a complete set of software for mobile devices such as tablet computers, notebooks, smartphones etc. Or We can say, android is a Linux-Based Operating System. It is currently used in various devices such as mobiles, tablets, televisions etc.
1 comment
Read more

What is the Android Architecture?

 Well, Android Architecture is categorized into five part.     1. Linux kernel     2. Native Libraries (Middleware),     3. Android Runtime     4. Application Framework     5. Applications You can see the picture shown below. Linux kernel: It is the heart of android architecture that exists at the root of android architecture. Linux kernel is responsible for device drivers, power management, memory management, device management and resource access. Native Libraries: On the top of Linux kernel, their are Native libraries such as Web-Kit, Open-GL, Free-Type, SQLite, Media, C runtime library (libc) etc. The Web-Kit library is responsible for browser support, SQLite is for database, Free-Type for font support, Media for playing and recording audio and video formats. Android Runtime: In android runtime, there are core libraries and DVM (Dalvik Virtual Machine) which is responsible to run android application. DVM...
Post a Comment
Read more

How to call Post type API using Retrofit in Android?

Step by Step Implementation Step 1: Create a New Project Step 2: Add the below dependency in your build.gradle file Navigate to the Gradle Scripts > build.gradle (Module:app) and add the below dependency in the dependencies section.  // below dependency for using the retrofit implementation ‘com.squareup.retrofit2:retrofit:2.9.0’ implementation ‘com.squareup.retrofit2:converter-gson:2.5.0’ After adding this dependency sync your project and now move towards the AndroidManifest.xml part.   Step 3: Adding permissions to the internet in the AndroidManifest.xml file Navigate to the app > AndroidManifest.xml and add the below code to it.  <!--permissions for INTERNET--> <uses-permission android:name="android.permission.INTERNET"/> Step 4: Working with the activity_main.xml file Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file.  <?xml version="1.0"...
Post a Comment
Read more