Every activity contains the layout, which has a user interface to interact with the user. So it can be said that An activity is the entry point for interacting with the user. Unlike most programming languages, in which the main() method is the entry point for that program or application to start its execution, the android operating system initiates the code in an Activity instance by invoking specific callback methods that correspond to specific stages of its Lifecycle. Any app, don’t matter how small it is (in terms of code and scalability), has at least one Activity class. External Storage in Android with ExampleĪctivity class is one of the very important parts of the Android Component.Firebase Authentication with Phone Number OTP in Android.How to Retrieve Data from the Firebase Realtime Database in Android?.How to Post Data to API using Retrofit in Android?.Implicit and Explicit Intents in Android with Examples.Fix "Unable to locate adb within SDK" in Android Studio.How to View and Locate SQLite Database in Android Studio?.How to change the color of Action Bar in an Android App?.How to Install and Set up Android Studio on Windows?.How to Push Notification in Android using Firebase Cloud Messaging?.How to Change the Color of Status Bar in an Android App?.How to Add and Customize Back Button of Action Bar in Android?.Content Providers in Android with Example.How to Update Gradle in Android Studio?.Android Projects - From Basic to Advanced Level.Broadcast Receiver in Android With Example.How to Create and Add Data to SQLite Database in Android?.How to Send Data From One Activity to Second Activity in Android?.How to Change the Background Color of Button in Android using ColorStateList?.
MVVM (Model View ViewModel) Architecture Pattern in Android.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.
Data Structure & Algorithm Classes (Live).
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