Design pattern – Observer
What is it? Real world Social media When a person updates his status – all his followers gets the notification A follower can follow or […]
Software Development
Android – Architecture – How to listen a source and update destination screen in real time by BroadcastManager?
Destination Activity/ Fragment Register BroadcastReceiver Source Activity/ Fragment Send Broadcast signal
Android – Architecture – How to listen child fragment update from parent fragment?
Child fragment Add listener interface Call listener when something occurs Parent fragment Attach listener to child fragment where it is called Implement listener
Android – Architecture – How to create one common layout for multiple UI elements inside a screen?
Create a base layout class Embed base class into screen layout Set values for each UI element in Activity
Architecture – Abstract class vs Interface
Abstract class and Interface Abstract class Abstract classes cannot be instantiated, but they can be subclassed An abstract method is a method that is declared […]
Android – Architecture – How to build multiple pages having similar UI structures/ logic features?
Build screens having Toolbar & Back button & popup dialog, show/hide soft keyboard Build an abstract Activity/ Fragment class Build screen implementing this base abstract […]
Android – Architecture – DI with Koin
Process of implementing Koin DI Declare a module Defines those entities which will be injected at some point in the app Start Koin A single […]
Architecture – What is Dependency Injection?
Why is DI necessary? Remove codes of initiating dependencies in your application Helpful for Unit Test How does DI remove codes of initiating dependencies? Control […]
Android – Source architecture – How to create Shared Preference repository?
Source structure app\—— java\————- [package name]\———————- AppApplication.kt———————- repository\——————————- UserPreferenceRepository.kt——————————- RepositoryModule.kt Create “RepositoryModule.kt” Create “UserPreferenceRepository.kt” Declare Koin module into “AppApplication.kt”
React Native: Useful command lines
Clear cache Clean Android gradle SDK location not found Create “local.properties” file Rebuild Android dependencies Clean iOS pod react-devtools pod install Test deep link on […]