CODEWITHSUNDEEP
flutternullglobal
Robban13
Robban13

Reputation: 112

Change value on global string to null

I use a global variable:

String? globalDeviceVersion;

And I set the variable when I connect via bluetooth device and it works good.

The issue is when I want to 'reset' the global value and I have tried:

setState(() {
  globals.globalDeviceVersion == null;
});
print(globals.globalDeviceVersion);

and without state:

globals.globalDeviceVersion == null;
print(globals.globalDeviceVersion);

The print in both cases just prints the previous value and the global is not set to null.

Upvotes: 1

Views: 57

Answers (2)

DroidFlutter
DroidFlutter

Reputation: 1285

Try below code.

setState(() {
  globals.globalDeviceVersion = null;
});
print(globals.globalDeviceVersion);

and without state:

globals.globalDeviceVersion = null;
print(globals.globalDeviceVersion);

Upvotes: 3

ayman omara
ayman omara

Reputation: 344

I think the issue here is you are comparing the globals.globalDeviceVersion to null not changing the value the code would be

setState(() {
  globals.globalDeviceVersion = null; //modify == to = only
});
print(globals.globalDeviceVersion);

Upvotes: 3

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