parsing json image - objective-c

Question

I'm parsing my data on this way:
NSDictionary *item = [tableData objectAtIndex:[indexPath row]];
[[cell textLabel] setText:[item objectForKey:#"title"]];
[[cell detailTextLabel] setText:[item objectForKey:#"description"]];
But is there a way to parse an cell image? Normally it's
UIImage *cellImage = [UIImage imageNamed:#"image.png"];
cell.imageView.image = cellImage;
But i'm searching for a way like
[[cell UIImage cellimage] ....
Something like that so i can parse an image url from json in it
is that possible?

Answer 1

NSURL *url = [NSURL URLWithString:[item objectForKey:#"image"]];
NSData *data = [NSData dataWithContentsOfURL:url];
cell.imageView.image = [UIImage imageWithData:data];
Set a max width for the image

Answer 2

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar // called when keyboard search button pressed
{
[spinner startAnimating];
spinner.hidden=NO;
NSLog( #" Searchbar text = %#",searchBar.text);
strSearch=searchBar.text;
strSearch=[strSearch stringByReplacingOccurrencesOfString:#" " withString:#"+"];
[searchBar resignFirstResponder];
[self searchGooglePhotos];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *) searchBar // called when cancel button pressed
{
[searchBar resignFirstResponder];
}
-(void)searchGooglePhotos
{
// Build the string to call the Flickr API
NSString *urlString = [NSString stringWithFormat:#"http://ajax.googleapis.com/ajax/services/search/images?v=1.0&q=%#",strSearch];
NSLog(#"urlarrystring is := %#",urlString);
// Create NSURL string from formatted string
NSURL *url = [NSURL URLWithString:urlString];
// Setup and start async download
NSURLRequest *request = [[NSURLRequest alloc] initWithURL: url];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection release];
[request release];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
// Store incoming data into a string
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
// Create a dictionary from the JSON string
NSDictionary *respone = [jsonString JSONValue];
//NSLog(#"result dict is :%#",respone);
// Build an array from the dictionary for easy access to each entry
urlarry = [[[respone valueForKey:#"responseData"] valueForKey:#"results"]valueForKey:#"url"];
NSArray *title = [[[respone valueForKey:#"responseData"] valueForKey:#"results"]valueForKey:#"title"];
MoreUrlarry=[[[respone valueForKey:#"responseData"] valueForKey:#"cursor"]valueForKey:#"moreResultsUrl"];
[urlarry retain];
NSLog(#"photourlarry is :%#",urlarry);
NSLog(#"phototitle is :%#",title);
NSLog(#"photoMoreUrlarry is :%#",MoreUrlarry);
NSData *data2;
NSString *str=[[NSString alloc] init];
[scrl removeFromSuperview];
[displayview removeFromSuperview];
scrl=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 44,320, 430)];
[scrl setContentSize:CGSizeMake(320*[urlarry count], 430)];
scrl.pagingEnabled=YES;
//==========
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// Assign activity indicator to the pre-defined property (so it can be removed when image loaded)
//self.activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(55, 67, 25, 25)];
// Start it animating and add it to the view
// Create multiple imageviews to simulate a 'real' application with multiple images
CGFloat verticalPosition = 10;
int i = 1;
for (i=1; i<5; i++) {
// Set vertical position of image in view.
if (i > 1) {
verticalPosition = verticalPosition+85;
}
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(122, verticalPosition, 80, 80)];
imageView.tag = i;
[self.view addSubview:imageView];
// set the image to be loaded (using the same one here but could/would be different)
NSString *str123=[urlarry objectAtIndex:i-1];
NSURL *imgURL = [NSURL URLWithString:str123];
// Create an array with the URL and imageView tag to
// reference the correct imageView in background thread.
NSMutableArray *arr = [[NSArray alloc] initWithObjects:imgURL, [NSString stringWithFormat:#"%d", i], nil ];
// Start a background thread by calling method to load the image
[self performSelectorInBackground:#selector(loadImageInBackground:) withObject:arr];
}
[pool release];
/*
int x=10,y=50,p=250,q=20;
for (int i=0; i<[urlarry count]; i++)
{
str=[NSString stringWithString:[urlarry objectAtIndex:i]];
data2 = [NSData dataWithContentsOfURL:[NSURL URLWithString:str]];
Favimage = [[UIImage alloc]initWithData:data2];
markButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[markButton setFrame:CGRectMake(p, q, 35,20)];
markButton.tag=i;
NSLog(#"tag is :%d",markButton.tag);
//[imgButton setTitle:[NSString stringWithFormat:#"%i",i] forState:UIControlStateNormal];
//imgButton.contentMode=UIViewContentModeScaleAspectFit;
// [imgButton setBackgroundImage:[UIImage imageNamed:#"no.png"]forState:UIControlStateNormal];
//[imgButton setImage:[Favimage imageScaledToFitSize:CGSizeMake(300, 320)] forState:UIControlStateNormal];
[markButton addTarget:self action:#selector(mark_buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
[scrl addSubview:markButton];
UIButton *imgButton = [UIButton buttonWithType:UIButtonTypeCustom];
[imgButton setFrame:CGRectMake(x, y, 300,320)];
imgButton.tag=i;
NSLog(#"tag is :%d",imgButton.tag);
//[imgButton setTitle:[NSString stringWithFormat:#"%i",i] forState:UIControlStateNormal];
imgButton.contentMode=UIViewContentModeScaleAspectFit;
// [imgButton setBackgroundImage:[UIImage imageNamed:#"no.png"]forState:UIControlStateNormal];
[imgButton setImage:[Favimage imageScaledToFitSize:CGSizeMake(300, 320)] forState:UIControlStateNormal];
[imgButton addTarget:self action:#selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
//[imgButton setImage:Favimage forState:UIControlStateNormal];
[scrl addSubview:imgButton];
//UIImageView *imageview=[[UIImageView alloc] initWithFrame:CGRectMake(x, y, 90, 90)];
// [imageview setImage:Favimage];
// [scrl addSubview:imageview];
NSLog(#"value of x=%d",x);
NSLog(#"value of y=%d",y);
NSLog(#"value of p=%d",p);
NSLog(#"value of q=%d",q);
NSLog(#"str is : %#",str);
if (y>=30 )
{
//x=15;
x=x+320;
}
if (q>=0 )
{
//x=15;
p=p+320;
}
//else
// {
// y=y+;
// }
}*/
[spinner stopAnimating];
spinner.hidden=TRUE;
[self.view addSubview:scrl];
btnmore.hidden=NO;
//NSLog(#"str is : %#",str);
// NSLog(#"j is : %d",j);
// NSLog(#"p is : %d",p);
}
- (void) loadImageInBackground:(NSArray *)urlAndTagReference {
NSLog(#"Received URL for tagID: %#", urlAndTagReference);
// Create a pool
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// Retrieve the remote image. Retrieve the imgURL from the passed in array
NSData *imgData = [NSData dataWithContentsOfURL:[urlAndTagReference objectAtIndex:0]];
UIImage *img = [[UIImage alloc] initWithData:imgData];
// Create an array with the URL and imageView tag to
// reference the correct imageView in background thread.
NSMutableArray *arr = [[NSArray alloc] initWithObjects:img, [urlAndTagReference objectAtIndex:1], nil ];
// Image retrieved, call main thread method to update image, passing it the downloaded UIImage
[self performSelectorOnMainThread:#selector(assignImageToImageView:) withObject:arr waitUntilDone:YES];
}
- (void) assignImageToImageView:(NSArray *)imgAndTagReference
{
// Create a pool
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// loop
for (UIImageView *checkView in [self.view subviews] ) {
NSLog(#"Checking tag: %d against passed in tag %d",[checkView tag], [[imgAndTagReference objectAtIndex:1] intValue]);
if ([checkView tag] == [[imgAndTagReference objectAtIndex:1] intValue]) {
// Found imageView from tag, update with img
[checkView setImage:[imgAndTagReference objectAtIndex:0]];
//set contentMode to scale aspect to fit
checkView.contentMode = UIViewContentModeScaleAspectFit;
//change width of frame
CGRect frame = checkView.frame;
frame.size.width = 80;
checkView.frame = frame;
}
}
// release the pool
[pool release];
// Remove the activity indicator created in ViewDidLoad()
//[self.activityIndicator removeFromSuperview];
}
-(void)buttonPressed:(id)sender
{
UIButton *imgButton = (UIButton *)sender;
int q=imgButton.tag;
string=[[NSString alloc] init];
string=[NSString stringWithString:[urlarry objectAtIndex:q]];
// NSLog(#"aap str is :%#",appDel.appstr);
// [self.navigationController pushViewController:objimv animated:YES];
}