Do Code Buddy - Android Development

Android apps usually interact with REST APIs, which often use JSON as a data format. We've focused almost all of our tutorials on sending JSON or XML requests, and converting JSON or XML responses. Scalars Converter for Plain Strings To receive plain-text or plain-string responses you can utilize the scalars converter. You can integrate the converter by adding it as a dependency to your app's build.gradle: dependencies {       implementation 'com.squareup.retrofit2:retrofit:2.9.0'     implementation 'com.squareup.retrofit2:converter-gson:2.9.0'     implementation 'com.squareup.retrofit2:converter-scalars:2.5.0'//You need to add this     implementation 'com.squareup.okhttp3:logging-interceptor:5.0.0-alpha.2' } Next, you need to describe the endpoint you want to interact with. In this demo case, you'll use a GET request with the dynamic URL feature to pass any URL to the method, and set the response type as String. @GET() Call<String...

Step 1. Create a project step by step activity_main.xml <? xml version ="1.0" encoding ="utf-8" ?> <LinearLayout xmlns: android ="http://schemas.android.com/apk/res/android" xmlns: tools ="http://schemas.android.com/tools" android :layout_width ="match_parent" android :layout_height ="match_parent" android :orientation ="vertical" tools :context =".MainActivity" > <include layout ="@layout/layout_toolbar" /> <androidx.recyclerview.widget.RecyclerView android :id ="@+id/recycleView" android :layout_width ="match_parent" android :layout_height ="match_parent" android :padding ="8dp" /> </LinearLayout>    layout_toolbar.xml <? xml version ="1.0" encoding ="utf-8" ?> <LinearLayout xmlns: android ="http://schemas.android.com/apk/res/...

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 ...

 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...