How to get a specific map out of a list of maps that has a bigger than or smaller than value than th-CodePudding

I'm working on a app where I retrieve json data via http, and I have made the listview.builder and all of that. Now I want to make a filter button to show the lists that only have values below a certain integer. for example: my list of maps goes something like this

[
  {
    "name": "jess",
    "age": "28",
    "job": "doctor"
  },
  {
    "name": "jack",
    "age": "30",
    "job": "jobless"
  },
  {
    "name": "john",
    "age": "24",
    "job": "doctor"
  },
  {
    "name": "sara",
    "age": "23",
    "job": "teacher"
  }...etc
]

Now I want to press that filter button and in my listview show only those that are below or above the age of 25.

CodePudding user response：

You can map over it and add your "filter" inside the condition. Since you save age as String you have to parse it to an int:

 var filteredList = myMapList.map((e){
    int? parsedAge = int.tryParse(e["age"]!);
    if(parsedAge != null && parsedAge >= 25){
      return e;
    }
   }).toList();

CodePudding user response：

I got the answer and it was there all the time I just didn't thought about that much. In case anyone faces the same issue, here's how it worked for me.

list filteredList = peopleDetailsList.where((element) => int.parse(element['age'] < 25).toList();