PickerAdapter<T> class abstract

Abstract base class for picker data adapters.

PickerAdapter defines the interface that all picker data sources must implement. Different adapters provide different types of data and behaviors:

• PickerDataAdapter - For array/list based data with hierarchical support
• NumberPickerAdapter - For numeric ranges and sequences
• DateTimePickerAdapter - For date and time selection

Custom Adapters

You can create custom adapters by extending this class:

class MyCustomAdapter extends PickerAdapter<MyDataType> {
  @override
  int getLength() => myData.length;

  @override
  int getMaxLevel() => 1;

  @override
  Widget buildItem(BuildContext context, int index) {
    return Text(myData[index].toString());
  }

  // ... implement other required methods
}

See also:

• PickerDataAdapter for the most common use cases
• NumberPickerAdapter for numeric data
• DateTimePickerAdapter for date/time selection