Couldn't parse image from XML file using NSXMLParser

Question

Hi all, Since i am newbie to developing iPhone application, i have problem in parsing XML data.
I use the following code for parsing XML file, this is RootViewController.h file
#import <UIKit/UIKit.h>
#import "SlideMenuView.h"
#define kNameValueTag 1
#define kColorValueTag 2
#define kSwitchTag 100
@class DetailViewController;
@interface RootViewController : UIViewController <UITableViewDataSource, UITableViewDelegate> {
DetailViewController *detailViewController;
UITableView *myTable;
UIActivityIndicatorView *activityIndicator;
UIButton *btn;
CGSize cellSize;
NSXMLParser *rssParser;
NSMutableArray *stories;
NSMutableDictionary *item;
NSString *currentElement;
NSMutableString *currentTitle, *currentDate, *currentSummary, *currentLink, *currentImage;
SlideMenuView *slideMenu;
NSMutableArray *buttonArray;
UIButton *rubic;
UIButton *buurt;
UIButton *beeld;
UILabel *lbl;
NSString *url;
@property (nonatomic, retain) UITableView *myTable;
@property (nonatomic, retain) DetailViewController *detailViewController;
@property (nonatomic, retain) SlideMenuView *slideMenu;
@property (nonatomic, retain) UIButton *btn;
@property (nonatomic, retain) NSMutableArray *buttonArray;
@property (nonatomic, retain) UIButton *rubic;
@property (nonatomic, retain) UIButton *buurt;
@property (nonatomic, retain) UIButton *beeld;
@property (nonatomic, retain) UILabel *lbl;
@end
below is the RootViewController.m file,
#import <Foundation/Foundation.h>
#import "RootViewController.h"
#import "DetailViewController.h"
#import "SlideMenuView.h"
@implementation RootViewController
@synthesize rubic, buurt, beeld, detailViewController, myTable, btn, buttonArray, slideMenu, lbl;
- (void)parseXMLFileAtURL:(NSString *)URL {
stories = [[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
rssParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];
// Set self as the delegate of the parser so that it will receive the parser delegate methods callbacks.
[rssParser setDelegate:self];
// Depending on the XML document you're parsing, you may want to enable these features of NSXMLParser.
[rssParser setShouldProcessNamespaces:NO];
[rssParser setShouldReportNamespacePrefixes:NO];
[rssParser setShouldResolveExternalEntities:NO];
[rssParser parse];
- (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:@"item"]) {
// clear out our story item caches...
item = [[NSMutableDictionary alloc] init];
currentTitle = [[NSMutableString alloc] init];
currentDate = [[NSMutableString alloc] init];
currentSummary = [[NSMutableString alloc] init];
currentLink = [[NSMutableString alloc] init];
currentImage = [[NSMutableString alloc] init];
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
//NSLog(@"ended element: %@", elementName);
if ([elementName isEqualToString:@"item"]) {
// save values to an item, then store that item into the array...
[item setObject:currentTitle forKey:@"title"];
[item setObject:currentSummary forKey:@"summary"];
[item setObject:currentDate forKey:@"date"];
[item setObject:currentImage forKey:@"enclosure"];
[stories addObject:[item copy]];
NSLog(@"adding story: %@", currentTitle);
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
//NSLog(@"found characters: %@", string);
// save the characters for the current item...
if ([currentElement isEqualToString:@"title"]) {
[currentTitle appendString:string];
} else if ([currentElement isEqualToString:@"description"]) {
[currentSummary appendString:string];
} else if ([currentElement isEqualToString:@"pubDate"]) {
[currentDate appendString:string];
} else if ([currentElement isEqualToString:@"enclosure"]) {
[currentImage appendString:string];
- (void)parserDidEndDocument:(NSXMLParser *)parser {
[activityIndicator stopAnimating];
[activityIndicator removeFromSuperview];
NSLog(@"all done!");
NSLog(@"stories array has %d items", [stories count]);
[myTable reloadData];
- (void)loadView {
//self.title = @"GVA_iPhone";
//UIImage *img = [UIImage imageNamed: @"gva_v2.1.png"];
CGRect frame = [[UIScreen mainScreen] bounds];
UIView *aView = [[UIView alloc] initWithFrame:frame];
aView.backgroundColor = [UIColor grayColor];
self.view = aView;
[aView release];
lbl = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 33.0, 320.0, 30.0)];
lbl.backgroundColor = [UIColor colorWithRed:21.0/255.0 green:113.0/255.0 blue:194.0/255.0 alpha:1.0];
lbl.textColor = [UIColor whiteColor];
lbl.font = [UIFont boldSystemFontOfSize:18.0];
[self.view addSubview:lbl];
[lbl release];
buttonArray = [[NSMutableArray alloc] init];
for(int i = 1; i < 4; i++)
// Rounded rect is nice
//UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
// Give the buttons a width of 100 and a height of 30. The slide menu will take care of positioning the buttons.
// If you don't know that 100 will be enough, use my function to calculate the length of a string. You find it on my blog.
[btn setFrame:CGRectMake(0.0f,3.0f, 120.0f, 30.0f)];
switch(i){
case 1:
[btn setTitle:[NSString stringWithFormat:@" Snel", i+1] forState:UIControlStateNormal];
[btn setBackgroundImage:[UIImage imageNamed:@"topbg02.png"] forState:UIControlStateNormal];
lbl.text = @" Snel";
[btn addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
[buttonArray addObject:btn];
break;
case 2:
[btn setTitle:[NSString stringWithFormat:@" Binnenland", i+1] forState:UIControlStateNormal];
[btn setBackgroundImage:[UIImage imageNamed:@"topbg02.png"] forState:UIControlStateNormal];
[btn addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[buttonArray addObject:btn];
break;
case 3:
[btn setTitle:[NSString stringWithFormat:@" Buitenland", i+1] forState:UIControlStateNormal];
[btn setBackgroundImage:[UIImage imageNamed:@"topbg02.png"] forState:UIControlStateNormal];
[btn addTarget:self action:@selector(buttonTouched:) forControlEvents:UIControlEventTouchUpInside];
[buttonArray addObject:btn];
break;
[btn release];
slideMenu = [[SlideMenuView alloc]initWithFrameColorAndButtons:CGRectMake(0.0, 3.0, 330.0, 30.0) backgroundColor:[UIColor blackColor] buttons:buttonArray];
[self.view addSubview:slideMenu];
UITableView *aTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 63.0, 320.0, 310.0)];
aTableView.dataSource = self;
aTableView.delegate = self;
aTableView.rowHeight = 120;
self.myTable = aTableView;
[aTableView release];
[self.view addSubview:myTable];
rubic = [[UIButton alloc]initWithFrame:CGRectMake(0.0, 370.0, 105.0, 50.0)];
[rubic setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[rubic setBackgroundImage:[UIImage imageNamed:@"MOUSEOVER.png"] forState:UIControlStateNormal];
[rubic addTarget:self action:@selector(buttonBinn:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:rubic];
UILabel *lblRub = [[UILabel alloc]initWithFrame:CGRectMake(10.0, 385.0, 45.0, 12.0)];
lblRub.text = @"Rubriek";
lblRub.font = [UIFont boldSystemFontOfSize:11.0];
lblRub.backgroundColor = [UIColor clearColor];
lblRub.textColor = [UIColor whiteColor];
[self.view addSubview:lblRub];
UIImageView *imgCat = [[UIImageView alloc] initWithFrame:CGRectMake(58.0, 375.0, 39.0, 36.0)];
imgCat.image = [UIImage imageNamed:@"category_icon.png"];
[self.view addSubview:imgCat];
buurt = [[UIButton alloc] initWithFrame:CGRectMake(105.0, 370.0, 108.0, 50.0)];
[buurt setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[buurt setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
[buurt addTarget:self action:@selector(buttonBuurt:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buurt];
UILabel *lblGlo = [[UILabel alloc]initWithFrame:CGRectMake(112.0, 385.0, 59.0, 12.0)];
lblGlo.text = @"In de Buurt";
lblGlo.font = [UIFont boldSystemFontOfSize:11.0];
lblGlo.backgroundColor = [UIColor clearColor];
lblGlo.textColor = [UIColor whiteColor];
[self.view addSubview:lblGlo];
UIImageView *imgGlo = [[UIImageView alloc] initWithFrame:CGRectMake(173.0, 375.0, 39.0, 36.0)];
imgGlo.image = [UIImage imageNamed:@"globe_icon.png"];
[self.view addSubview:imgGlo];
beeld = [[UIButton alloc]initWithFrame:CGRectMake(213.0, 370.0, 108.0, 50.0)];
[beeld setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[beeld setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
[beeld addTarget:self action:@selector(buttonBeeld:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:beeld];
UILabel *lblCam = [[UILabel alloc]initWithFrame:CGRectMake(228.0, 385.0, 45.0, 12.0)];
lblCam.text = @"In Beeld";
lblCam.font = [UIFont boldSystemFontOfSize:11.0];
lblCam.backgroundColor = [UIColor clearColor];
lblCam.textColor = [UIColor whiteColor];
[self.view addSubview:lblCam];
UIImageView *imgCam = [[UIImageView alloc] initWithFrame:CGRectMake(276.0, 375.0, 39.0, 36.0)];
imgCam.image = [UIImage imageNamed:@"camera_icon.png"];
[self.view addSubview:imgCam];
if([stories count] == 0) {
[self parseXMLFileAtURL:@"http://iphone.concentra.exuvis.com/feed/rss/article/2/binnenland.xml"];
cellSize = CGSizeMake([myTable bounds].size.width,60);
- (IBAction)buttonPressed:(id)sender {
lbl.text = ((UIButton*)sender).currentTitle;
- (IBAction)buttonClicked:(id)sender {
lbl.text = ((UIButton*)sender).currentTitle;
- (IBAction)buttonTouched:(id)sender {
lbl.text = ((UIButton*)sender).currentTitle;
-(void)buttonBinn:(id)sender
[rubic setBackgroundImage:[UIImage imageNamed:@"MOUSEOVER.png"] forState:UIControlStateNormal];
[buurt setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
[beeld setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
-(void)buttonBuurt:(id)sender
[buurt setBackgroundImage:[UIImage imageNamed:@"MOUSEOVER.png"] forState:UIControlStateNormal];
[beeld setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
[rubic setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
-(void)buttonBeeld:(id)sender
[beeld setBackgroundImage:[UIImage imageNamed:@"MOUSEOVER.png"] forState:UIControlStateNormal];
[rubic setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
[buurt setBackgroundImage:[UIImage imageNamed:@"bottombg01.png"] forState:UIControlStateNormal];
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
// Release anything that's not essential, such as cached data
- (void)dealloc {
[myTable release];
[detailViewController release];
[super dealloc];
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return [stories count];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"GVAiPhone"];
if (cell == nil) {
//CGRect cellFrame = CGRectMake(0, 0, 300, 65);
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"GVAiPhone"] autorelease];
//cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
//cell.accessoryView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"arrow_icon.png"]];
CGRect nameValueRect = CGRectMake(5, 5, 275, 35);
UILabel *nameValue = [[UILabel alloc] initWithFrame:nameValueRect];
nameValue.tag = kNameValueTag;
nameValue.font = [UIFont fontWithName:@"Arial" size:15.0];
nameValue.lineBreakMode = UILineBreakModeWordWrap;
nameValue.numberOfLines = 2;
[cell.contentView addSubview:nameValue];
[nameValue release];
CGRect colorValueRect = CGRectMake(5, 38, 275, 65);
UILabel *colorValue = [[UILabel alloc] initWithFrame:colorValueRect];
colorValue.tag = kColorValueTag;
colorValue.font = [UIFont fontWithName:@"Arial" size:11.0];
colorValue.textColor = [UIColor colorWithRed:130.0/255.0 green:135.0/255.0 blue:139.0/255.0 alpha:1.0];
colorValue.lineBreakMode = UILineBreakModeWordWrap;
colorValue.textAlignment = UITextAlignmentLeft;
colorValue.numberOfLines = 6;
[cell.contentView addSubview:colorValue];
[colorValue release];
// Set up the cell
//cell.text = [theSimpsons objectAtIndex:indexPath.row];
//cell.hidesAccessoryWhenEditing = YES;
NSUInteger storyIndex = [indexPath row];
NSDictionary *rowData = [stories objectAtIndex:storyIndex];
UILabel *name = (UILabel *)[cell.contentView viewWithTag:kNameValueTag];
name.text = [rowData objectForKey:@"title"];
//name.lineBreakMode;
//UIImage *image =[UIImage imageNamed: currentImage];imageWithContentsOfFile
//image.size.width = 50;
//iimage.size.height = 50;
//cell.image = [UIImage imageNamed:currentImage];
cell.accessoryView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"arrow_icon.png"]];
UILabel *color = (UILabel *)[cell.contentView viewWithTag:kColorValueTag];
color.text = [rowData objectForKey:@"summary"];
return cell;
@end
- here the actual problem is the xml node <enclosure> contains images but in using the method "didEndElement" , it doesn't parse into the <enclosure> node. ya so please help me in parsing and getting the image.
Waiting for your help !!
-Sathiya

Answer 1

Hi, how did you solve your problem in detail. I'm having the same problem with this rss-feed: www.spiegel.de/index.rss
I cannot parse the url of the images. I'm looking forward to your answer.