Room Database & Type Converters in Android | Singleton Pattern Room Hindi- CheezyCode #11

Learn Type Converters in Android Room Database. Learn how to implement a singleton pattern for Room Database in Kotlin to have a single instance of the database for the whole application. Room Persistence library is like an ORM tool that helps in storing entities directly into the database. SQLite supports limited data types, to support custom data types or other types such as Date or UUID - we need TypeConverters.
Learn how to use companion object with @Volatile and synchronized block in Kotlin. Learn how to use SQLite in Android using Room Jetpack Architecture Components. Learn all this about Android Jetpack Components in Hindi by creating small projects.
These components help in writing clean code and help in following clean architecture in android. Learn all this about Android in Hindi by creating small projects. Everything is explained in Hindi (हिंदी में )
Topics Covered -
1. Singleton Pattern in Kotlin
2. Thread Safe Singleton pattern implementation - Room Database
3. Need of Singleton
4. TypeConverters (@TypeConverter, @TypeConverters) in Android Room
5. Simple Example of Room Database
Kotlin Companion Object Video -
• Kotlin Companion Objec...
ViewModel Concept -
• Android ViewModel Tuto...
ViewModelFactory -
• Android ViewModel Fact...
Beginner series in Android Playlist (Hindi) -
• Android Tutorials Step...
Kotlin Beginners Tutorial Series -
• Kotlin Beginner Tutori...
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[@preetamgupta3532]

सर आपके बताने का तरीका बहुत अच्छा हैं।🙏 अच्छे से चीजे समझ आती है। Thanku Sir

[@CheezyCode]

Thank you 🤘

[@sarkheelmughal6545]

this playlist helps me a lot. kindly cover all other jetpack topics as soon as possible especially MVVM. thanks for such content.

[@CheezyCode]

Thank you 🤘 and mvvm for sure

[@Maheshl43]

@@CheezyCode waiting

[@kt_radhakishan]

Nice job sir 👍 Your tutorial is very helpful. Love you ❤️❤️ so much ❣️ sir Love from Indore Madhya Pradesh.

[@Punarjagran]

BLESSED TO FIND YOU.. I SPREAD THESE VIDEOS & THIS BRAND / CHANNEL A LOTTT

[@CheezyCode]

Thank you 🤘...aapka din shubh ho 😁

[@Punarjagran]

@@CheezyCode aapka bhi 🙏✨

[@ShivamPatel-vp5pb]

Amazing Explanation Sir ❤🫡

[@kishorramani007]

Thanks 🙌 Ending music and song is nice 🙂

[@CheezyCode]

Thanks

[@BCS_AAMIRASHRAF]

thanku sir just amazing❤❤❤

[@CheezyCode]

♥

[@saurabhpandey9077]

Bht se resources available hai android development ko le k in the form of videos, articles post etc. But the way you explain is just amazing ek bar me hi smjh aa jata hai and i am sure all 40.5K subscribers will be agree with me You are awesome Thank you so much. and my humble request is that can you please videos on Dagger hilt

[@CheezyCode]

Thanks Saurabh....Dependency Injection and Coroutines will be next....stay tuned

[@vidhidixit5003]

Always Well Explained !! Thanks

[@CheezyCode]

Thanks Vidhi

[@moeed1584]

very much helpful contents Thanks sir

[@CheezyCode]

Thanks Abdul

[@gajukollur7591]

Sir , why companion object... we can directly achieve singleton using just object

[@Subratsss]

Very good explanation

[@Sikarwar0020]

Sir Coroutines ko bhi details me explain kr dena.. I am really enjoying this playlist.

[@CheezyCode]

Sure bro...Coroutines pe dil se content ban rha hai....poori koshish

[@Sikarwar0020]

@@CheezyCode thanks a lot 😇

[@sat_talk]

Great video.. keep it up. After finishing this series pl. make a series on Firebase Push Notification ( especially when app is no longer in background). I found many videos on that but they only showed either foreground or background scenarios.. no video found based on how to get Notification when app is no longer running in background which is realtime case ..

[@CheezyCode]

Noted

[@dogsgallery2199]

Thnx for everything cheezy code

[@CheezyCode]

Thank you 🤘

[@Maheshl43]

Love you don't stop

[@arjundixit5913]

Nice explanation. Just one confusion, as mentioned by you in kotlin tutorial , object is used to create a synchronised singleton instance, then why are we again using the java way to create singleton inside the companion object ? I mean is it not defeating the whole purpose of it?

[@CheezyCode]

It all depends how you access the object. If you access the object in the application class, you can define simple object declaration that will work. But we are accessing it with in activity - it is better to have thread safe singleton.

[@arjundixit5913]

@@CheezyCode Sorry bhai but samjh nhi aaya..firstly ki object b toh thread safe hota h na? secondly activiy me aisi kya problem h jis wjah se simple object decalaration will not work...but will work in application? pls agar aap thoda detail m smjha sko because i want to clear my concepts

[@sunilkumar-zl6eo]

Great Teaching sir.....if possbile please provide the content "like website" for new video so that we can prepare for interview.........please sir...

[@CheezyCode]

bilkul bro koshish karte hai...

[@rabindratiduar728]

❤❤❤❤

[@mubaraknative]

Bro in this 6:41 typeconvertor we convert Data to Long for inserting for Fetching Long to Data is used when i will use in my real application the data will show as like this Wed jul 29 19:24:54 GMT + 05:30 2023 simply i want to format the data how to do that bro how to format like DD/MM/YY only

[@CheezyCode]

Just google it

[@CheezyCode]

stackoverflow.com/a/61410177

[@CheezyCode]

stackoverflow.com/a/11773496

[@gamenation9222]

Thank you #CheezyCode

[@CheezyCode]

Thank you 🤘

[@jineshsharma2780]

Sir how to create the type convertor for Files and images

[@mohammadtaqi4051]

Database me agar 2 column me long value ho to kya dono long value to time me convert karega? Agr nahi to fir usko kese pata chalega k konsi long column ke liye ye converter use krna hai?

[@CheezyCode]

Datatypes same hai toh converter chalega...aur ye try karo - clarity jabhi aayegi...question toh answer hojayege

[@deepeshkumar1704]

If we have multi type converter, then how compiler know, which type converter they have to use??

[@deepeshkumar1704]

cheked your replies on previous comments, found solution, Thanks❤

[@deepeshkumar1704]

but if you have another way to explain now, pls Thanks❤

[@H1MANSHU]

7:34 ; at this point , I think stupids like me will definitely select @TypeConverters in place of @TypeConverter as it was suggested first , which is going to throw a compile time error !

[@rashidullah1412]

sir why suspend is not working when i removed suspend work properly but is still there is not there in background thread how shou;d i do sir

[@pankajgupta8211]

Sir, this code this work only one time when i again run the program the app is crashing please help i cannot find out the problem i done all the things correctly .

[@anujvaish2513]

Bhai gana bahut acha hai

[@CheezyCode]

50k pe release karna h

[@ChocoByte]

Here, you made a convertor for date, but how to make convertor for any different types or any custom class. I need a convertor for type FILE

[@CheezyCode]

Convert that to Binary...but I would suggest not to store that in DB...store it as a file only - just store the file name inside sqlite

[@ChocoByte]

@@CheezyCode" store it as file only" ? Data type "File" is not available in DB....then how...?

[@dumbguy1073]

How will that automatically convert from date to long and long to date?????

[@BhardwajHackology]

same question, how does it know when to Convert what to convert, we didnt define it here

[@CheezyCode]

Primitive types don't need conversion Whenever it encounters types other than primitives - it looks for type converters. If type converters are present, it uses these functions to convert values, otherwise will throw an error.

[@BhardwajHackology]

@@CheezyCode means It will look for a function that takes data type that needs to be converted, if it is present then it will use that function right ?

[@CheezyCode]

Yes...check type converters documentation

[@BhardwajHackology]

@@CheezyCode Sure, I’ll check, Thanks for your time 🫶

[@GAGANDEEP901]

can anyone answer, this is SQLlite right?

[@CheezyCode]

Yes behind the scenes it is SQLite

[@raokarampal]

Bhai vo converter wale fun jo banaye hai vo call kaha se kiye hai date ko change karne ke liye? Smaj nahi aaya yaar? 🤔 7:58 ke baad samaj nahi aaya

[@CheezyCode]

Room apne aap call karta hai...contactdatabase pe typeconverters ki annotation add kari h

[@raokarampal]

@@CheezyCode uske kaise pata kon sa call karna hai matlab agar m usme ek or fun rakhu FromlongtoString(value :Long) : string{ return str(value) } To kya hoga?

[@CheezyCode]

Bro data type check hota hai.... function jisme date type ka input ho, wo use hoga... Fir jab wapsi long jisme input hoga wo use hoga..room check karta hai data type dekh ke

[@CheezyCode]

Entity ke andar jo field h uska type bhi toh dekhega...string banane se date type kaise milega

[@CheezyCode]

Acha aise samajh skte ho - Room ne dekha entity ke andar date hai...usne kaha date store nahi kar skta - convertors pe pahocha usne dekha - koi aisa function jo input mei date le rha ho...usse mila ek function jo date ko long mei convert kar rha tha.... Ab access kar rha hu database se - value mili long usne kaha long ke liye koi aisa method hai jo date mei convert kar rha ho - usse mil gya - usko use kar liya usne

[@dogsgallery2199]

React native oe video banaiye

[@historicalheros9684]

jab me database me data insert karta hu to app crash ho jata he , muje pata nahi kyu. aap help kar sakte ho

[@CheezyCode]

Check the logcat for the error

[@SachaHindu88]

Little Correction fun getInstance(context: Context): ContactDatabase { if (INSTANCE == null) { synchronized(this) { if (INSTANCE == null) { INSTANCE = Room.databaseBuilder( context.applicationContext, ContactDatabase::class.java, "ContactDB" ).build() } } } return INSTANCE!! }

[@deepsheth1086]

why another if in inside ?

[@rishabhgupta655]

gana ka kya naam h mil nahi raha h

[@CheezyCode]

Gaana karege release...inhouse h