TreeView item change background on click

[vadimbarda]

Hi, community. Please help me to implement functionality to change node background on click,
I use onItemInvoked callback. Then in this callback I remove this node and add new one with changed background:

var siblings = node.parent?.children ?? rootItems;
if (siblings.contains(node)) {
  siblings[siblings.indexOf(node)] = newNode;
}

But I don't see changes in UI. But I see changes after I collapse and expand parent. Where I am wrong?
Thank you in advance

[bdlukaa]

Have you tried to setState?

[vadimbarda]

Yes, I did. There is tree like File Explorer with lazy loading. Each node is directory in file system. I implemented dynamic changing lead icon depends on collapse/expanded state. But background color changing on click doesn't work for me. It is not help for me to wrap node changing with setState like:

var siblings = node.parent?.children ?? rootItems;
   if (siblings.contains(node)) {
      setState(() {  
         siblings[siblings.indexOf(node)] = newNode;
      });
}

Maybe you have some link to example I can review? I investigated examples in this repository, but there is no something I need. Thank you

[vadimbarda]

Hi @bdlukaa Any suggestions?

[bdlukaa]

As a workaround, you can use a key GlobalKey<TreeView> and build the items programatically. I filed #810 to track this issue

[vadimbarda]

thank you