Flutter State Management

Introduction to State Management

State management ka matlab hota hai ki app ke state (yaani data) ko kaise manage kiya jaye. State wo hota hai jo app ka current status dikhata hai, jaise ki user ka naam, login status, etc. Flutter mein different state management techniques hoti hain jo help karti hain app ka data manage karne mein.

Ephemeral State

Ephemeral state wo state hota hai jo sirf ek widget ke lifetime ke liye hi rehta hai. Jaise ek text field ka input ya ek checkbox ka state. Ye state usually setState function se manage hota hai.

App State

App state wo state hota hai jo poori app mein accessible hota hai. Isse hum global state bhi kehte hain. Is type ka state tab useful hota hai jab humein ek screen se dusri screen tak data share karna hota hai.

ChangeNotifier

ChangeNotifier ek class hoti hai jo notify karti hai listeners ko jab bhi state change hota hai. Isko use karte hain to easily manage aur update state in a Flutter app. Hum notifyListeners() method ko call karte hain jab humein batana hota hai ki state change ho gaya hai.

ChangeNotifierProvider

ChangeNotifierProvider ek widget hai jo ChangeNotifier ka instance provide karta hai apne child widgets ko. Ye provider package ka part hota hai aur state ko widgets tree mein distribute karne ke liye use hota hai.

Consumer

Consumer ek widget hai jo ChangeNotifierProvider se provided state ko consume karta hai. Iska fayda ye hai ki sirf wahi widget rebuild hota hai jab state change hota hai, jisse performance improve hota hai.

Redux

Redux ek state management pattern hai jo unidirectional data flow follow karta hai. Isme state ko store ki tarah manage kiya jata hai aur actions aur reducers ki madad se state ko update kiya jata hai. Ye pattern React se popular hua hai aur Flutter mein bhi use hota hai.

Fish Redux

Fish Redux Redux ka ek extension hai jo mainly large scale applications ke liye design kiya gaya hai. Ye Redux ke principles follow karta hai but kuch extra features provide karta hai like better performance aur modular architecture.

BLoC

BLoC ka full form hai Business Logic Component. Ye pattern Dart Streams aur Reactive Programming principles use karta hai. BLoC pattern mein, hum logic ko UI se separate karte hain taaki code reusable aur testable ho jaye.

Flutter Commands

Flutter Commands ek package hai jo commands pattern ko implement karta hai. Isse hum actions aur state ko easily manage kar sakte hain. Ye pattern especially tab useful hota hai jab humein complex state transitions handle karne hote hain.

GetX

GetX ek lightweight aur powerful state management solution hai jo reactive programming principles use karta hai. Isme built-in dependency injection aur route management bhi included hota hai. Ye easy to use aur highly performant hai.

Providers

Providers Flutter ka officially recommended way hai state management ke liye. Ye InheritedWidgets ke upar built hota hai aur simple aur scalable state management solution provide karta hai. Providers ke through hum context mein state ko inject aur access kar sakte hain.

Agar aapko kisi bhi topic par aur detail mein jaankari chahiye ho to aap pooch sakte hain.