以编程方式设置NSTextField的文本

Question

I have a GUI built on IB (Xcode 4).
It has a Static Text field connected to an NSTextField. After reading the information from an XML file it's supposed to change the text to whatever it is coming from the XML

the .h is as follow:

IBOutlet NSTextField * DataBaseLocation;

the .m

NSMutableArray* DBLoc = [[NSMutableArray alloc] initWithCapacity:1];
NSXMLElement* root  = [doc rootElement];
NSArray* DBarray = [root nodesForXPath:@"//DataBaseLocation" error:nil];
for(NSXMLElement* xmlElement in DBarray)
    [DBLoc addObject:[xmlElement stringValue]];

NSString * DBLocationString = [DBLoc objectAtIndex:0];
[DataBaseLocation setStringValue:DBLocationString];

NSLog(@"DBLoc: %@", DBLoc);

The NSLog shows that DBLoc has the correct string, yet the Text Field is empty and never gets set.

yes, I checked the connections in IB. Any ideas? thanks!

Answer 1

Found the answer.

I needed to initialize the NSXMLDocument with NSXMLDocumentTidyXML like:

NSXMLDocument* doc = [[NSXMLDocument alloc] initWithContentsOfURL: [NSURL fileURLWithPath:input] options:NSXMLDocumentTidyXML error:NULL];

Answer 2

您应该打印出DBLocationString而不是DBLoc，以确保它不为空或格式错误，不能作为字符串值传递并从那里去。