Objective-C

Update an XML Attribute

See more XML Examples

Demonstrates how to update XML attributes.

The output XML is this:

<abc b="pear" c="orange" a="130">Test</abc>

Objective-C

#import <CkoXml.h>

BOOL success = NO;

CkoXml *xml = [[CkoXml alloc] init];

success = [xml LoadXml: @"<abc a=\"123\" b=\"apple\">Test</abc>"];

//  The UpdateAttribute and AddOrUpdateAttribute methods
//  are identical.  Both will replace the attribute's value if it
//  already exists, or insert a new attribute if it does not yet exist.

//  Change the value of attribute "b" to "pear".
success = [xml UpdateAttribute: @"b" attrValue: @"pear"];

//  Because no attribute named "c" exists, UpdateAttribute
//  will create it:
success = [xml UpdateAttribute: @"c" attrValue: @"orange"];

//  If an attribute's value is an integer, the AddToAttribute
//  method may be called to update it by adding an integer value.
//  For example, update the value of "a" to "130" by adding 7.
[xml AddToAttribute: @"a" amount: [NSNumber numberWithInt: 7]];

//  Examine the result:
NSLog(@"%@",[xml GetXml]);