dart

Error display after few debugging in flutter, "type 'Null' is not a subtype of type 'int' in type cast"

[Unhandled exception: type 'Null' is not a subtype of type 'int' in type cast #0 Session._refreshSessionData.parseContents (package:unified_analytics/src/session.dart:85:43) #1 Session._refreshSessionData (package:unified_analytics/src/session.dart:89:7) #2 new Session (package:unified_analytics/src/session.dart:28:5) #3 new AnalyticsImpl (package:unified_analytics/src/analytics.dart:427:23) #4 new Analytics (package:unified_analytics/src/analytics.dart:83:12) #5 getAnalytics (package:flutter_tools/src/reporting/unified_analytics.dart:51:10) #6 runInContext.<anonymous closure> (package:flutter_tools/src/context_runner.dart:92:24) #7…

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Flutter – My slider have value well changed , but cant move it , or cant display changes

@override Widget build(BuildContext context) { double currentSliderValue = 100.0; return Scaffold( appBar: AppBar( backgroundColor: Theme.of(context).colorScheme.inversePrimary, title: Text(widget.title), ), body: Slider( value: currentSliderValue, onChanged: (double value) { setState(() { currentSliderValue = value; }); }, label: '$currentSliderValue', ), ), ); } }…

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how remove innerpadding of textbutton flutter?

How to remove internal spacing from a text button in flutter? enter image description here Remove the internal spacing of the button TextButton( style: ButtonStyle( padding: MaterialStateProperty.all<EdgeInsetsGeometry>( EdgeInsets.zero), tapTargetSize: MaterialTapTargetSize.shrinkWrap ), onPressed: () {}, child: Container( width: 50, height: 50,…

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