initState() method of first activity is not initializing after taking popback stack from the aother activity

user_8559029 0
Viewed 615

I am working on flutter application where I am using 3 screens.

MainActivity open to ActivityClass1 and ActivityClass1 will open ActivityClass2. Now when I am taking Navigator.pop(context), from ActivityClass2 it will shows ActivityClass1 from the stack. But this time I need to take initState() of ActivityClass1 as I need to refresh few data on ActivityClass1.

Is there any way to call initState() of ActivityClass1 which also maintain my stack for MainActivity -> ActivityClass1? I have also tried for Navigator.of(context).pushAndRemoveUntil( instead of using Navigator.pop(context), on ActivityClass2 but this will clears my stack.

flutter-state flutter-layout flutter
3 Answers

Navigator.push returns a Future when the MaterialPageRoute passed into it is resolved. You could await that Future to know when some other view has popped back to it.

Example,

Navigator.of(context).push(MaterialPageRoute(
  builder: 
    (context) => NewView(),
  ),
).then((_) {
  // Call setState() here or handle this appropriately
});

So now when I am coming back to my Activity Class1 this method will help to take any action while comming back to screen by just using Navigator.pop(context),.

user_85590290

If you want to start the initial state of the screen again, you can use pushReplacement instead of Pop() when you want to back. It works for me:

Use pushReplacement to go to ActivityClass2 and to back to ActivityClass1

ActivityClass2 -> ActivityClass1

Navigator.pushReplacement(
  context,
  MaterialPageRoute(
    builder: (context) => ActivityClass1(),
  ),
);
user_96798070

Instead of using Navigator.of(context).pop, use:

Navigator.push(
  context,
  MaterialPageRoute(builder: (context) => SecondRoute()),
);
user_84800690
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