Flutter listview builder not scrolling

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Flutter ListView.builder not scrolling – Solution

When a ListView.builder widget in Flutter is not scrolling, it usually happens due to one of the following reasons:

  1. Insufficient content or too few items in the list.
  2. Missing constraints or incorrect sizing of the ListView.
  3. Interference by other widgets in the widget tree.

1. Insufficient Content or Too Few Items

If the ListView.builder does not contain enough items, or the items themselves are not large enough to fill the available space, scrolling may not be enabled. Make sure you have enough items or content to fill the screen.

2. Incorrect Sizing or Missing Constraints

ListView.builder relies on constraints to determine its size and whether it should be scrollable or not. You can wrap the ListView.builder widget with a SizedBox or Container and provide explicit height and/or width constraints.


  Container(
    height: 300, // Provide a specific height
    child: ListView.builder(
      // Your builder implementation
    ),
  )

3. Interference by Other Widgets

Sometimes, other widgets in the widget tree can interfere with the scroll behavior of ListView.builder. Check if any parent widget has properties like `NeverScrollableScrollPhysics` or `physics: NeverScrollableScrollPhysics()`, as these can prevent scrolling within the ListView.builder.


  SingleChildScrollView(
    physics: NeverScrollableScrollPhysics(), // Remove this line if present
    child: Container(
      height: 300, // Provide a specific height
      child: ListView.builder(
        // Your builder implementation
      ),
    ),
  )

Example

Here is an example that demonstrates a basic ListView.builder implementation:


  Container(
    height: 300, // Provide a specific height
    child: ListView.builder(
      itemCount: 10, // Number of items in the list
      itemBuilder: (BuildContext context, int index) {
        return ListTile(
          title: Text('Item $index'),
        );
      },
    ),
  )

Ensure that you have a sufficient number of items and set an appropriate height to enable scrolling. If the issue persists, check for any conflicting properties in the parent widgets or share more code for further assistance.

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