How to change ListView.builder background image based on certain condition in flutter?

[Niyazi Toros]

Hi,

How to change  ListView.builder background image based on certain condition in flutter?

I need to change background image with '${_TempData[i][2]}' condition

body: new ListView.builder(

  itemCount: _TempData.length,

  itemBuilder: (context, i) => new Column(

        children: <Widget>[

          new Divider(

            height: 10.0,

          ),

          new ListTile(

            leading: new CircleAvatar(

              backgroundImage: AssetImage('assets/dollar.png'),

[Joost Lekkerkerker]

A lot of magic can be done with:

statement ? (if true) : (if false)

so if you want a backgroundImage only if _TempData[i][2] is a certain condition you end up with:

_TempData[i][2] ? AssetImage() : null,

if _TempData[i][2] isn't a boolean, just replace that statement with like:

_TempData[i][2] == 'dollar' ? AssetImage() : null,

cheers

Op dinsdag 17 juli 2018 14:02:38 UTC+2 schreef Niyazi Toros:

[Niyazi Toros]

thanks @Joost, my problem is that _TempData[i][2] == has 4 condition. if use than load use image, if euro than load euro image, if birth pond than load sterling image

[Eugenio Tesio]

Generate a method:

AssetImage loadImage(int condition) {
  if (condition == 1) return AssetImage('assets/dollar.png');
  if (condition == 2) return AssetImage('assets/euro.png');
  if (condition == 4) return AssetImage('assets/blabla.png');
}

Then use it in backgroundImage propertie:

new ListTile(

            leading: new CircleAvatar(

              backgroundImage: loadImage(${_TempData[i][2]}),

El mar., 17 jul. 2018 a las 9:46, Niyazi Toros (<niyazi...@gmail.com>) escribió:

thanks @Joost, my problem is that _TempData[i][2] == has 4 condition. if use than load use image, if euro than load euro image, if birth pond than load sterling image

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Eugenio Tesio

Zetus - Soluciones Empresariales

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