Dart

Iterate over Direct Children with a Specific Tag

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Demonstrates how to iterate over direct children having a specific tag.

The input XML, available at http://www.chilkatsoft.com/data/fruit.xml, is this:

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final xml = CkXml();

  // The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
  try {
    xml.loadXmlFile('fruit.xml');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  //  Get the number of direct children having the tag "fruit";
  final numWithTag = xml.numChildrenHavingTag('fruit');

  if (numWithTag > 0) {

    for (var i = 0; i < numWithTag; i++) {
      final child = xml.getNthChildWithTag('fruit', i);
      print('$i: ${child.tag} : ${child.content}');
    }

    print('-----');

    // Do the same as the above loop, but instead of creating
    // a new object instance for each child, call GetNthChildWithTag2 to
    // update the object's reference instead.
    for (var i = 0; i < numWithTag; i++) {
      // Navigate to the Nth child.  
      xml.getNthChildWithTag2('fruit', i);
      print('$i: ${xml.tag} : ${xml.content}');
      // Navigate back up to the parent:
      xml.getParent2();
    }

    print('-----');
  }
}