What is Activity and Activity LifeCycle in Android

Activity in android is for GUI . If user want to use Textview, button , edit text and other ui component in android app then user has to use activity . Activity represents user  interface . Activity LifeCycle : Following is the flow of activity . OnCreate OnStart OnResume OnPause OnStop OnDestroy OnCreate : This is the first method call when the system create activity . In this method , we...

Basic Building Blocks of Android

Building Blocks in Android are : Activities Services&nb...

Background Image Size in Android

Background Image Size : Background image size for image is different for a different resolution . If a have hdpi screen, the size of image is different for a mdpi screen , xxhdpi screen a...

Icon Size in Android

For  Launcher icons : 48 × 48 (mdpi) 72 × 72 (hdpi) 96 × 96 (xhdp...

Whats New in Android N

Features : Constraint Layout : Its an Unbundled Library which we can integrate in our app without updating or upgrading android framework ....

Android Mashmallow

Android Mashmallow is known as Android 6.0. Why need Android 6.0 ? In Android 6.0 google provide run time permission so no app can get/steal your data in background . Earlier permission request  are only at install time , but to provide more securi...