Question 79984 in Flutter Question posted in
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Adding extra option to tenerary operator flutter

   Container(
              decoration: BoxDecoration(
                  color: (page == _currentPage)
                      ? Colors.blue.shade800
                      : Colors.green.shade600
                      ),

I am trying to add another option to the tenerary operator since i have three pages that will change color. How can i add a third option

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3

Answers


  1. 0

    you can do

    color: page == _currentPage
       ? anotherCheck == _currentPage? 
         Colors.blue.shade500: Colors.blue.shade800 
       : Colors.green.shade600

    Creating a method will be better for more.

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  2. 0 
    List<Color> colors = [Colors.blue, Colors.amber, Colors.pink];
...


Container(
              decoration: BoxDecoration(
                  color: colors[ _currentPage],
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  3. 0

    First you have to understand how tenerary operator works
    Here is the simple nested example of tenerary operator

    (foo==1)? something1():(foo==2)? something2():(foo==3)?something3():something4();

    and this is equal to

    if(foo == 1){
    something1();
}
else if(foo == 2){
    something2();
}
else if (foo == 3){
    something3();
}
else{
    something4();}
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