I'm using this code to load an image into my UITableView.
But nothing is loading, any ideas why? The link is correct when I NSLog it.
NSString *temp = [appointmentDictionaryTemp objectForKey:#"patient_small_photo_url"];
NSData * imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:temp]];
UIImage * image = [UIImage imageWithData:imageData];
UIImageView * myImageView = [[UIImageView alloc] initWithImage:image];
cell.patientImage = myImageView;
Update:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"appointmentCell";
AppointmentTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSDictionary *appointmentDictionaryTemp = [self.appointmentArray objectAtIndex:indexPath.row];
cell.patientNameLabel.text = [appointmentDictionaryTemp objectForKey:#"patient"];
cell.appointmentTimeLabel.text = [appointmentDictionaryTemp objectForKey:#"scheduled_time"];
NSString *urlString = [[appointmentDictionaryTemp objectForKey:#"patient_small_photo_url"] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSData * imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];
UIImage * image = [UIImage imageWithData:imageData];
cell.patientImage.image = image;
return cell;
}
Have you tried with:
cell.patientImage.image = image;
Of course you don't need to create myImageView.
Try adding percent escapes to your URL string.
NSString *urlString = [[appointmentDictionaryTemp objectForKey:#"patient_small_photo_url"] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
Related
I am using GCD to load images from web into my UITableViewCell. But, wrong images are showing up.
Here is code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
UITableViewCell *cell = [self.newsTable dequeueReusableCellWithIdentifier:#"newsTableCell"];
NSString *user = [usernames objectAtIndex:[indexPath row]];
NSString *stat = [statistics objectAtIndex:[indexPath row]];
NSString *imagePath = [appDelegate.URL stringByAppendingString:#"ImageName"];
UIImageView *userImageView = (UIImageView *)[self.view viewWithTag:80];
NSString *imagePath1 = [imagePath stringByAppendingString:[imagepaths objectAtIndex:[indexPath row]]];
NSURL *url = [NSURL URLWithString:imagePath1];
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
dispatch_async(queue, ^{
NSData *data = [NSData dataWithContentsOfURL:url];
UIImage *img = [[UIImage alloc] initWithData:data];
userImageView.layer.cornerRadius = 5.0;
userImageView.layer.masksToBounds = YES;
dispatch_sync(dispatch_get_main_queue(), ^{
[userImageView setImage:img];
});
});
return cell
}
Please let me know, where I am going wrong.
You are not using at all your cell variable, you are setting images on an UIImageView which comes from self.view. The images will never be set correctly on the cells of the table.
I'm trying to make a facebook friend picker displaying the friends who currently have the app installed that are also facebook friends with the current user.
Here I'm fetching the user's facebook profile picture but, I seem to have a warning where the last statement is not used. Thanks for your help.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"friendCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
PFUser *facebookID = [[PFUser alloc] init];
facebookID = [friendUsers objectAtIndex:0];
NSString *fbIdString = [[NSString alloc] init];
fbIdString = [facebookID objectForKey:#"fbId"];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
NSURL *profilePictureURL = [NSURL URLWithString:[NSString stringWithFormat:#"https://graph.facebook.com/%#/picture?type=large", fbIdString]];
NSData *picData = [NSData dataWithContentsOfURL:profilePictureURL];
UIImage *fbPic = (UIImage *)[self.view viewWithTag:1001];
[fbPic initWithData:picData];
}
// Configure the cell...
return cell;
}
You need to actually assign the result of the initWithData: call to your fbPic image.
E.g.
fbPic = [fbPic initWithData: picData];
From the apple documentation on UIImage:
- (id)initWithData:(NSData *)data
Parameters
data -
The data object containing the image data.
Return Value
An initialized UIImage object, or nil if the method could not initialize the image from the specified data.
A couple of things:
UIImage *fbPic = (UIImage *)[self.view viewWithTag:1001]; - I think you're trying to get the UIImageView from the cell?
There's no UIImageView where you're actually showing the image.
It should be something like this:
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
NSURL *profilePictureURL = [NSURL URLWithString:[NSString stringWithFormat:#"https://graph.facebook.com/%#/picture?type=large", fbIdString]];
NSData *picData = [NSData dataWithContentsOfURL:profilePictureURL];
UIImageView *fbPicImageView = (UIImageView *)[self.view viewWithTag:1001];
[fbPicImageView setImage:[UIImage imageWithData:picData]];
}
I have scenario that in which i am using selector in TableViewCell as bellow and when I click on back button in my view I want to cancel that selector and I am sending dictionary as object in Selector
My code is as bellow
In Header File
NSMutableDictionary* photoDict;
NSMutableDictionary* dictImages;
In .M file
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *cellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if(cell==nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellIdentifier];
[[NSBundle mainBundle]loadNibNamed:#"MyCellNib" owner:self options:Nil];
cell = detailChainObj;
}
NSString* avatarURL =#"image_Url"; //Any url of image for cell.
NSString *key =[[NSString alloc] initWithFormat:#"Key%d%d",indexPath.section,indexPath.row];
dictImages = [NSDictionary dictionaryWithObjectsAndKeys:imageViewCell,#"Img",imgURL,#"imgURL",key,#"key", nil];
[self performSelectorInBackground:#selector(DownloadLinkzImageOfUser:) withObject:dictImages];
if([photoDic valueForKey:keyAvt])
{
NSData* data = (NSData*)[photoDic valueForKey:key];
imageViewCell.image = [UIImage imageWithData:data];
}
else
{
[self performSelectorInBackground:#selector(DownloadImagesForCell:) withObject:dictImages];
}
}
//
-(void)DownloadImagesForCell:(NSDictionary *)result
{
UIImageView* img = (UIImageView*)[result objectForKey:#"Img"];
NSString* urlAvt = [result valueForKey:#"imgURL"];
if([urlAvt isEqualToString:#"No Image"])
{
img.image = [UIImage imageNamed:#"noimg.png"];
}
else
{
NSData* data = [NSData dataWithContentsOfURL:[NSURL URLWithString:imgURL]];
img.image = [UIImage imageWithData:data];
[photoDic setValue:data forKey:[NSString stringWithFormat:#"%#",[result valueForKey:#"key"]]];
}
}
Now I want to cancel this selecter when I press back button
and please keep in mind that I have already use
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:#selector(DownloadImagesForCell:) object:dictImages];
https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/nsobject_Class/Reference/Reference.html
I guess this method works for performSelector:withObject:afterDelay: only.
I download some images using an NSThread. When all the images are downloaded, I have to put them in cell.myimageview. Give me the solution for setting an image in a user-defined method.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
TableCell *cell = (TableCell *)[TableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[TableCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
NSString *bedsbaths=[NSString stringWithFormat:#"Beds:%# Baths:%#",[[AppDeleget.statuses valueForKey:#"beds"] objectAtIndex:indexPath.row],[[AppDeleget.statuses valueForKey:#"baths"] objectAtIndex:indexPath.row]];
cell.mlsno.text=[[AppDeleget.statuses valueForKey:#"mlsno"] objectAtIndex:indexPath.row];
cell.price.text=[[AppDeleget.statuses valueForKey:#"price"] objectAtIndex:indexPath.row];
cell.address.text=[[AppDeleget.statuses valueForKey:#"address"] objectAtIndex:indexPath.row];
cell.bedsbaths.text=bedsbaths;
cell.accessoryType=UITableViewCellAccessoryDetailDisclosureButton;
return cell;
}
-(void)LoadImage
{
for(int x=0;x<[ListPhotos count];x++)
{
NSData *imageData =[ListPhotos objectAtIndex:x];
id path = imageData;
NSURL *url = [NSURL URLWithString:path];
NSLog(#"%#",url);
NSData *data = [NSData dataWithContentsOfURL:url];
UIImage *img = [[UIImage alloc] initWithData:data];
[self performSelectorOnMainThread:#selector(downloadDone:) withObject:img waitUntilDone:NO];
}
}
-(void)downloadDone:(UIImage*)img {
// I have to set the cell here. How?
cell.myimageView.image=img
}
In -(void)LoadImage
Store the img in a NSArray.
In - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath , code as
cell.myimageView.image=[imgArray objectAtIndex:indexPath.row];
Assign the delegate and datasource of tableview as,
-(void)downloadDone:(UIImage*)img {
self.tableView.delegate=self;
self.tableView.datasource=self;
}
I have several hunderd .jpgs in /Resources within an iOS project.
Here is the viewDidLoad method:
- (void)viewDidLoad {
NSArray *allPosters = [[NSBundle mainBundle] pathsForResourcesOfType:#"jpg" inDirectory:#"."];
[super viewDidLoad];
}
The above successfully loads all of the .jpgs into an NSArray.
I simply need to display all of the .jpgs within this array in UITableViewCells in a UITableView
Here is the -(UITableViewCell *)tableView:cellForRowAtIndexPath: method:
-(UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
NSDictionary *posterDict = [allPosters objectAtIndex:indexPath.row];
NSString *pathToPoster= [posterDict objectForKey:#"image"];
UITableViewCell *cell =
[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell ==nil ) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
}
UIImage *theImage = [UIImage imageNamed:pathToPoster];
cell.ImageView.image = [allPosters objectAtIndex:indexPath.row];
return cell;
}
I know the issue is with cell.ImageView.image, but am not sure what the issue is? How can I grab each .jpg from the array and display in each row?
NSArray *allPosters = [[NSBundle mainBundle] pathsForResourcesOfType:#"jpg" inDirectory:#"."];
This will give you an array of paths (as suggested by the method name). Those paths are NSStrings.
But you are assigning this array to a local variable, and this variable will be gone after you left viewDidLoad.
so you have to change it into something like this:
allPosters = [[[NSBundle mainBundle] pathsForResourcesOfType:#"jpg" inDirectory:#"."] retain];
Another one:
NSDictionary *posterDict = [allPosters objectAtIndex:indexPath.row];
NSString *pathToPoster= [posterDict objectForKey:#"image"];
And this would definitely crash if you would have assigned the array correctly.
Change it into
NSString *pathToPoster = [allPosters objectAtIndex:indexPath.row];
Next one:
UIImage *theImage = [UIImage imageNamed:pathToPoster];
cell.ImageView.image = [allPosters objectAtIndex:indexPath.row];
UIImages imageNamed: doesn't work with paths, it needs filenames. And of course you want to assign the real image to the imageview and not the path to the poster. So change it:
UIImage *theImage = [UIImage imageNamed:[pathToPoster lastPathComponent]];
cell.imageView.image = theImage;
Try using [UIImage imageWithContentsOfFile:pathToPoster] rather than imageNamed. And set the value to the UIImage object.
It's probably just a typo, but it should be:
//lowercase "i" in imageView
cell.imageView.image = [allPosters objectAtIndex:indexPath.row];
Also- you are creating UIImage *theImage, but then you don't use it. What's going on there?