How to not delete last element in array (Dart language)

April 22, 2022

How to not delete last element in array list? Since if user keep clicking on remove button, it will return to negative value if there is no element in it.

Row(
        children: [
          Column(
            children: [
              TextButton(child: const Text ('Click Me'), 
                         onPressed: () { 
              setState((){ 
              _listTexts.add(textController.text);
              });
              }),
            ],
          ),
          Column( 
            children: [
              TextButton(child: const Text ('Remove Me'), 
                 onPressed: () { 
              setState((){ 
              _listTexts.removeLast();
              });
              }),
            ])
        ],
      ),

>Solution :

Simply check the length of the list before removing the element. If it reaches 1 item, it stops deleting.

Column( 
 children: [
  TextButton(child: const Text ('Remove Me'), 
     onPressed: () { 
     if(_listTexts.length > 1) setState((){ 
     _listTexts.removeLast();
     });
   }),
 ])