Android™

Iterate over Direct Child Nodes by Index

See more XML Examples

Demonstrates some ways to iterate over direct child nodes by index.

The input XML, available at http://www.chilkatsoft.com/data/get_child.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>

Android™

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

    CkXml xml = new CkXml();
    CkXml child;

    // The sample input XML is available at http://www.chilkatsoft.com/data/get_child.xml
    success = xml.LoadXmlFile("get_child.xml");
    if (success != true) {
        Log.i(TAG, xml.lastErrorText());
        return;
        }

    // The NumChildren property contains the number of direct
    // child nodes.  Note: The child nodes under "xyz" are NOT
    // direct children of "root".  Therefore, the "root" node has
    // 7 direct children
    Log.i(TAG, "NumChildren = " + String.valueOf(xml.get_NumChildren()));

    // Iterate over the direct children by index. The first child
    // is at index 0.
    int i;
    for (i = 0; i <= xml.get_NumChildren() - 1; i++) {
        //  access the tag and content directly by index:
        Log.i(TAG, String.valueOf(i) + ": " + xml.getChildTagByIndex(i) + " : " + xml.getChildContentByIndex(i));

        }

    Log.i(TAG, "-----");

    // Do the same as the above loop, but get the child node
    // and access the Tag and Content properties:
    for (i = 0; i <= xml.get_NumChildren() - 1; i++) {
        child = xml.GetChild(i);
        Log.i(TAG, String.valueOf(i) + ": " + child.tag() + " : " + child.content());

        }

    Log.i(TAG, "-----");

    // Do the same as the above loop, but instead of creating
    // a new object instance for each child, call GetChild2 to
    // update the object's reference instead.
    for (i = 0; i <= xml.get_NumChildren() - 1; i++) {
        // Navigate to the Nth child.  
        success = xml.GetChild2(i);
        Log.i(TAG, String.valueOf(i) + ": " + xml.tag() + " : " + xml.content());
        // Navigate back up to the parent:
        success = xml.GetParent2();
        }

    Log.i(TAG, "-----");

    // Notice that the Content of the "xyz" node is empty.  This is correct.
    // The "xyz" node has no Content, but 2 direct children

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}