iphone xml parser

#import <UIKit/UIKit.h>


@interface MoreAppViewController : UITableViewController {
	UIActivityIndicatorView * activityIndicator;

	NSXMLParser *xmlParser;
	NSMutableArray *appList;
	NSMutableDictionary *item;
	
	NSString *currentElement;
	NSMutableString *name, *description, *picurl, *url;
}

-(id)init;

-(void) parseXMLFileAtURL:(NSString*)URL;

@end

#import "MoreAppViewController.h"


@implementation MoreAppViewController

-(id)init{
	self = [super init];
	if(self!=nil){
		self.title = @"More";
	}
	return self;
}
/*
 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
        // Custom initialization
    }
    return self;
}
*/


// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
	[super loadView];
	if ([appList count] == 0) {
		
		/*
		// make the activity indicator as the right side button
		CGRect frame = CGRectMake(0.0, 0.0, 25.0, 25.0);
		activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:frame];
		[activityIndicator startAnimating];
		[activityIndicator sizeToFit];
		activityIndicator.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin |
											  UIViewAutoresizingFlexibleRightMargin |
											  UIViewAutoresizingFlexibleTopMargin |
											  UIViewAutoresizingFlexibleBottomMargin);
		
		UIBarButtonItem *loadingView = [[UIBarButtonItem alloc] initWithCustomView:activityIndicator];
		loadingView.target = self;
		self.navigationItem.rightBarButtonItem = loadingView;
		*/
		NSString * path = @"http://www.host.net/info/info.xml";
		[self parseXMLFileAtURL:path];
	}
	
}


-(void) parseXMLFileAtURL:(NSString*)URL{
	appList = [[NSMutableArray alloc]init];
	//you must then convert the path to a proper NSURL or it won't work
	NSURL *xmlURL = [NSURL URLWithString:URL];
	
	// here, for some reason you have to use NSClassFromString when trying to alloc NSXMLParser, otherwise you will get an object not found error
	// this may be necessary only for the toolchain
	xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];
	
	// Set self as the delegate of the parser so that it will receive the parser delegate methods callbacks.
	[xmlParser setDelegate:self];
	
	// Depending on the XML document you're parsing, you may want to enable these features of NSXMLParser.
	[xmlParser setShouldProcessNamespaces:NO];
	[xmlParser setShouldReportNamespacePrefixes:NO];
	[xmlParser setShouldResolveExternalEntities:NO];
	
	[xmlParser parse];
}

- (void)parserDidStartDocument:(NSXMLParser *)parser {
	NSLog(@"found file and started parsing");
}

- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError {
	NSString * errorString = [NSString stringWithFormat:@"Unable to download story feed from web site (Error code %i )", [parseError code]];
	NSLog(@"error parsing XML: %@", errorString);
	
	UIAlertView * errorAlert = [[UIAlertView alloc] initWithTitle:@"Error loading content" message:errorString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
	[errorAlert show];
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
	//NSLog(@"found this element: %@", elementName);
	currentElement = [elementName copy];
	
	if ([elementName isEqualToString:@"app"]) {
		// clear out our story item caches...
		item = [[NSMutableDictionary alloc] init];
		name = [[NSMutableString alloc] init];
		description = [[NSMutableString alloc] init];
		picurl = [[NSMutableString alloc] init];
		url = [[NSMutableString alloc] init];
	}
}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
	
	//NSLog(@"ended element: %@", elementName);
	if ([elementName isEqualToString:@"app"]) {
		// save values to an item, then store that item into the array...
		[item setObject:name forKey:@"name"];
		[item setObject:description forKey:@"description"];
		[item setObject:picurl forKey:@"picurl"];
		[item setObject:url forKey:@"url"];
		
		[appList addObject:[item copy]];
		NSLog(@"adding story: %@", name);
	}
}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
	//NSLog(@"found characters: %@", string);
	// save the characters for the current item...
	if ([currentElement isEqualToString:@"name"]) {
		[name appendString:string];
	} else if ([currentElement isEqualToString:@"description"]) {
		[description appendString:string];
	} else if ([currentElement isEqualToString:@"picurl"]) {
		[picurl appendString:string];
	} else if ([currentElement isEqualToString:@"url"]) {
		[url appendString:string];
	}
}

- (void)parserDidEndDocument:(NSXMLParser *)parser {
	
	[activityIndicator stopAnimating];
	[activityIndicator removeFromSuperview];
	
	NSLog(@"all done!");
	NSLog(@"stories array has %d items", [appList count]);
	//[newsTable reloadData];
	[self.tableView reloadData];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	return [appList count];
}

- (UITableViewCell *)tableView:(UITableView *)mtableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	static NSString *CellIdentifier = @"app-flist-cell";
	UITableViewCell *cell = (UITableViewCell*)[mtableView dequeueReusableCellWithIdentifier:CellIdentifier];
	if (!cell){
		cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]autorelease];
	}
	NSUInteger row = [indexPath row];
	NSDictionary *caiDictionary = [appList objectAtIndex:row];
	cell.textLabel.text = [caiDictionary objectForKey:@"name"];
	cell.detailTextLabel.text = [caiDictionary objectForKey:@"description"];
	NSString *iconurl = [caiDictionary objectForKey:@"picurl"];
	//if([picurl1 isEqualToString:@""]){
		
	////}
	NSLog(@"%@",iconurl);
	NSURL *iconurl_1 = [NSURL URLWithString:iconurl];
	NSData *data = [NSData dataWithContentsOfURL:iconurl_1];
	UIImage *img = [[UIImage alloc]initWithData:data];
	cell.imageView.image = [UIImage imageNamed:@"icon.png"];
	//cell.imageView.image = img;
	[img release];
	cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
	return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	NSLog(@"#######");
	NSUInteger row = [indexPath row];
	NSDictionary *dictionary = [appList objectAtIndex:row];
	NSString *appurl = [dictionary objectForKey:@"url"];
	NSLog(@"##%@",appurl);
	//[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url1]];
	//NSString *thePhone = [NSString stringWithFormat:@"tel:%@",theNumber];
	//NSURL *url = [[NSURL alloc] initWithString:thePhone];
	NSURL *ccj = [NSURL URLWithString:appurl];
	BOOL a = [[UIApplication sharedApplication] openURL:ccj];
	if(a){
		NSLog(@"00");
	}else{
		NSLog(@"001");
	}

	//[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://123456"]];
}


/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
}
*/

/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/

- (void)didReceiveMemoryWarning {
	// Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
	
	// Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
	// Release any retained subviews of the main view.
	// e.g. self.myOutlet = nil;
}


- (void)dealloc {
    [super dealloc];
}


@end

NSString *url = [[NSString alloc] initWithFormat:@"http://www.example.com.pt/iPhone/resize.php?max_height=80&max_width=58&qt=80&imgpath=%@",[aNoticia.img substringFromIndex:3]];
	cell.imageView.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[ NSURL URLWithString:url]]];

评论

1 楼 yjl824690388 2010-06-08  

请问楼主这个XML可以是本地的文件吗, 若可以请问与以上代码有哪些差别.