ROOM ORM on Sqlite database

Room persistence library is an object-relational mapping used on top of SQLite database.  Which is mainly introduced to save the app developer time on database. In olden day's every developer used to write 1000+ lines of code to create a database with multiple tables in it.

Google I/O 2017 has come up with ORM methodology in Android for SQLite, It saves the developer time by just using the Model(Pojo) classes a table's and DAO interface for CRUD operations.

ROOM is the part of android Jetpack, which is Android Software components can be used to build great Android Apps

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What's new in Kotlin 1.3 and Kotlin/Native multiplatform

On watching online streaming KotlinConf 2018 Keynote, which I was expected to see only updates in terms of mobile apps, I become excited when I see they bring the multiplatform Kotlin/Native-1.3(Beta), which is really going to bring quite challenges to the mobile developers, Here some things which I am going explain in brief.

What're the Kotlin updates?

1. 1.5+ million users as of October within 2years(Open source)
2. Autoscaling backend for your mobile apps
3. Write Kotline using your favorite JAVA framework and libraries 
4. Use fully-managed MySQL/PostgreSQL or Firebase for your application database
5. Use IntelliJ with Google Cloud Tools Plugins to add Google Cloud API libraries and deploy to App Engine 

Some of the top companies using the Kotlin

1. Allegro Tech
2. N 26
3. American Express
4. OLX Group

What changes in Mobile apps?

1. Reduced the build time from 50sec to 36sec
2. Multiplatform projects: iOS and Android

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Job Scheduler in Android API 21(5.0 Lolipop)

Currently, Android System has two main means to schedule tasks :

1. AlarmManager
2. JobScheduler API

The latest apps should use the JobScheduler API. When the system is optimizing based on memory, power, connectivity conditions, APPs can still schedule jobs.
JobScheduler always runs in main UI thread: This means we should use run JobScheduler on Thread or AsyncTask

Advantages :

1. JobScheduler API helps the batch jobs when devices has more resources
2. JobScheduler API can be used to schedule everything that is not time critical for the user.
3. The Android System can combine jobs so that battery consumptions can be reduced.
4. It helps them during the application restart
5. JobManager makes handling uploads easier as it handles automatically unreliability of the network.

When to use JobScheduler :

1. Tasks that require WIFI or Data Connection
2. Tasks that are not critical or not facing
3. Tasks that should be running on a regular basis as batch where the time is not critical.

How to use JobScheduler

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Whats new in Android Pie 9.0

                                      

A New Way to Rotate Phone
Android has come up with the latest functionality to rotate horizontally with simple tap on botton icon. Same icon can be used to rotate back to vertical


Adaptive Battery
Digital Wellbeing
Google has released a new app on play store which monitors the hours of user spending times on every app so the user can adapt the best way to use the phone.


Revamped User Interface
Google is working on introducing material design 2 usage guidelines and themes to improve the user interface

Ban Annoying Notifications

Gesture Navigation

Removes the recent apps overview button and replaces the original home button with a pill that can slide up to show recent apps or slide right to quickly switch between apps

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SWIFT TableViewController

When the interface contains a table view or little content subclass UITableViewController
Table view controllers already contain the protocols you just need to manage your table views content and respond to changes.

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Top Topics to know in SWIFT

                             
Observer V/S Delegates in SWIFT

Delegates are one to one communication and whereas an observer is having one and many other places to notify that observer through the code, from many places. In Observer its quite difficult to keep the record of every notifier, timing issues and maintain code and its hard to keep record of every notifier

LifeCycle of Views

Here are the different life cycle called whenever user loads the views on screen

Automatic Reference Counting and Retain Lifecycle

Favourite Framework

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Android App Bundle for bigger size APK's

The new app publishing format, the Android App Bundle, is an improved way to package your app. The Android App Bundle lets you more easily deliver a great experience in a smaller app size, allowing for the huge variety of Android devices available today. You don’t need to refactor your code to start benefiting from a smaller app.
Google Play’s new app serving model, called Dynamic Delivery, then uses your app bundle to generate and serve optimized APKs for each user’s device configuration, so they download only the code and resources they need to run your app. You no longer have to build, sign, and manage multiple APKs to support different devices, and users get smaller, more optimized downloads.

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