I have implemented coverFlow usinng http://chaosinmotion.com/flowcover.m this link. Its working fine. I want to get coverFlow images through web service. Its working fine for single image. Anyone send me code for getting multiple coverFlow images in a single url having multiple image attributes.Any changes in backend should reflect in code means if no of images are increased then in coverflow also show the same no. of images.
In CoverFlowViewController.h file
NSMutableArray *profilephotos; // declare NSMutableArray
In CoverFlowViewController.m file
- (void)viewDidLoad
{
profilephotos = [[NSMutableArray alloc] initWithObjects:#"www.xxxx.com/ima.jpeg",#"www.xxxx.com/ima1.jpeg",#"www.xxxx.com/ima2.jpeg",#"www.xxxx.com/ima3.jpeg",#"www.xxxx.com/ima4.jpeg",#"www.yyy.com/ima5.jpeg",nil];
NSLog(#"profilephotos = %#",profilephotos); // Your array of Images url
loadImagesOperationQueue = [[NSOperationQueue alloc] init];
for (int i=0; i < [profilephotos count]; i++)
{
NSString *pho = [profilephotos objectAtIndex:i];
NSURL *url = [NSURL URLWithString:pho];
NSData *data = [NSData dataWithContentsOfURL: url];
UIImage *img=[UIImage imageWithData:data];
CGSize newSize = CGSizeMake(300.0f, 300.0f);
UIGraphicsBeginImageContext(newSize);
[img drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[(AFOpenFlowView *)self.view setImage:newImage forIndex:i];
}
[(AFOpenFlowView *)self.view setNumberOfImages:[profilephotos count]];
}
Related
I am trying to load remote image on my imageview using the following code. displayImage is referenced with imageview at testview.xib
- (void)viewDidLoad
{
[super viewDidLoad];
self.displayImage.userInteractionEnabled = YES;
NSMutableURLRequest *requestWithBodyParams = [NSMutableURLRequest requestWithURL:self.gImg.URL];
NSData *imageData = [NSURLConnection sendSynchronousRequest:requestWithBodyParams returningResponse:nil error:nil];
self.originalImage = [UIImage imageWithData:imageData];
self.displayImage.contentMode = UIViewContentModeScaleAspectFit;
self.displayImage = [[UIImageView alloc] initWithImage:self.originalImage];
[self.displayImage setImage:self.originalImage];
NSLog(#"DisplayImage Object:%#",self.displayImage);
NSLog(#"height of Displayimage image:%.f",self.displayImage.image.size.height);
}
But the image is not showing. I am certain image did loaded on imageview. Here is output log:
DisplayImage Object:<UIImageView: 0x11033270; frame = (0 0; 720 632); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x1104c620>>
height of Displayimage image:632
Here I am modified your code:
No need to alloc the UIImageView in code, if you have the UIImageView in .xib.
NSURL *gImg = [NSURL URLWithString:#"http://www.vinfotech.com/sites/default/files/iphoe-app-design-ios7-way-12.jpg"];
NSMutableURLRequest *requestWithBodyParams = [NSMutableURLRequest requestWithURL:gImg];
NSData *imageData = [NSURLConnection sendSynchronousRequest:requestWithBodyParams returningResponse:nil error:nil];
UIImage *originalImage = [UIImage imageWithData:imageData];
self.displayImage.contentMode = UIViewContentModeScaleAspectFit;
// self.displayImage = [[UIImageView alloc] initWithImage:originalImage];
[self.displayImage setImage:originalImage];
NSLog(#"DisplayImage Object:%#",self.displayImage);
NSLog(#"height of Displayimage image:%.f",self.displayImage.image.size.height);
Hope so, this code helps you.
Create a dispatch queue:
dispatch_queue_t backgroundQueue = dispatch_queue_create("com.mayapp", NULL);
Use NSData method dataWithContentsOfURL and download the image in a background thread:
dispatch_async(backgroundQueue, ^(void) {
NSData *data = [NSData dataWithContentsOfURL:requestWithBodyParams];
//as soon as the image is downloaded, draw image in a main thread
dispatch_sync(dispatch_get_main_queue(), ^(void) {
self.originalImage = [UIImage imageWithData:data];
self.displayImage.contentMode = UIViewContentModeScaleAspectFit;
self.displayImage = [[UIImageView alloc] initWithImage:self.originalImage];
[self.displayImage setImage:self.originalImage];
});//close main block
});//background block
This Sample code works fine for me :
- (void)viewDidLoad
{
[super viewDidLoad];
NSURL *url = [NSURL URLWithString:#"http://iceclearmedia.com/wp-content/uploads/2011/04/SEO-and-url-Shorteners.jpg"];
NSData* imageData = [[NSData alloc] initWithContentsOfURL:url];
UIImage* image = [[UIImage alloc] initWithData:imageData] ;
[self performSelectorOnMainThread:#selector(displayImage:) withObject:image waitUntilDone:NO];
}
- (void)displayImage:(UIImage *)image {
[self.imagedownload setImage:image]; //UIImageView
}
I'm writing an app that needs store a few images in cache. I'm trying to do it with NSCache and the code seems to be well but don't save the images in cache. I have this code:
cache is global, declared in .h: NSCache *cache;
-(UIImage *)buscarEnCache:(UsersController *)auxiliarStruct{
UIImage *image;
[[cache alloc] init];
NSLog(#"cache: %i", [cache countLimit]);
if ([cache countLimit] > 0) { //if [cache countLimit]>0, it means that cache isn't empty and this is executed
if ([cache objectForKey:auxiliarStruct.thumb]){
image = [cache objectForKey:auxiliarStruct.thumb];
}else{ //IF isnt't cached, is saved
NSString *imageURLString = [NSString stringWithFormat:#"http://mydomain.com/%#",auxiliarStruct.thumb];
NSURL *imageURL = [NSURL URLWithString:imageURLString];
NSData * imageData = [NSData dataWithContentsOfURL:imageURL];
image = [UIImage imageWithData:imageData];
[cache setObject:image forKey:auxiliarStruct.thumb];
}
}else{ //This if is executed when cache is empty. IS ALWAYS EXECUTED BECAUSE FIRST IF DOESN'T WORKS CORRECTLY
NSString *imageURLString = [NSString stringWithFormat:#"http://mydomain.com/%#",auxiliarStruct.thumb];
NSURL *imageURL = [NSURL URLWithString:imageURLString];
NSData * imageData = [NSData dataWithContentsOfURL:imageURL];
image = [UIImage imageWithData:imageData];
[cache setObject:image forKey:auxiliarStruct.thumb];
}
return image;
}
This function is called in other function with this:
UIImage *image = [self buscarEnCache:auxiliarStruct];
This works because the image is displayed on screen but isn't saved in cache, the line that I think fails is:
[cache setObject:image forKey:auxiliarStruct.thumb]; //auxiliarStruct.thumb is the name of the image
Someone knows why cache doesn't work?? Thanks!!
ps: sorry for my english, I know is bad
Every time the method buscarEnCache: is called an new cache object is created with the line:
[[cache alloc] init];
Thus the old cache just leaked and is not available any more.
place the cache = [[NSCache alloc] init]; in the init method of the class.
There is no need to check for the countLimit.
-(UIImage *)buscarEnCache:(UsersController *)auxiliarStruct{
UIImage *image = [cache objectForKey:auxiliarStruct.thumb];
if (!image) {
NSString *imageURLString = [NSString stringWithFormat:#"http://mydomain.com/%#",auxiliarStruct.thumb];
NSURL *imageURL = [NSURL URLWithString:imageURLString];
NSData * imageData = [NSData dataWithContentsOfURL:imageURL];
image = [UIImage imageWithData:imageData];
[cache setObject:image forKey:auxiliarStruct.thumb];
}
return image;
}
You might want to place the fetch of the image in a method that runs in an other thread and return some kind of placeholder image.
As well as the answer provided by #rckoenes, you aren't allocating the cache instance correctly anyway; it should be:
cache = [[NSCache alloc] init];
Which should be moved into your init method.
this is a part of my code. I'm using a asyncImageView .Everything work good. But now i want to save in the iphone all images in a path. I know i have to use NSFileManager but where?
EDIT: now i try with my code but nothing save when i compile on my iphone
// Configure the cell.
NSDictionary *dico = [self.pseudoOnline objectAtIndex:indexPath.row];
cell.pseudo.text = [dico objectForKey:#"pseudo"];
cell.sexe.text = [dico objectForKey:#"sexe"];
cell.age.text = [dico objectForKey:#"age"];
UIImage *image = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[dico objectForKey:#"photo"]]]];
NSString *deskTopDir = #"/Users/***/Desktop/imagesOnline";
NSString *nomPhoto = [[cell.pseudo text]stringByReplacingOccurrencesOfString:#"\n" withString:#""];;
NSLog(#"pseudo%#",nomPhoto);
NSString *jpegFilePath = [NSString stringWithFormat:#"%#/%#.jpeg",deskTopDir,nomPhoto];
NSData *data2 = [NSData dataWithData:UIImageJPEGRepresentation(image, 0.5f)]; quality
[data2 writeToFile:jpegFilePath atomically:YES];
NSLog(#"image %#",jpegFilePath);
[image release];
CGRect frame;
frame.size.width=45; frame.size.height=43;
frame.origin.x=-5; frame.origin.y=0;
asyncImageView *asyncImage = [[[asyncImageView alloc] initWithFrame:frame] autorelease];
asyncImage.tag =999;
[asyncImage loadImageFromURL:[NSURL URLWithString:[dico objectForKey:#"photo"]]];
[cell.contentView addSubview:asyncImage];
return cell;
so now it works i can download all the pictures. But now i want to load them
I'm not sure what asyncImageView is, but it appears to get an image.
If it gets the image the way your code implies, you can put your NSFileManger method call right after:
[cell.contentView addSubview:asyncImage];
If, on the other hand, the asyncImageView fetches the image asynchronously (as it's name implies), then you should put your NSFileManager method call in asyncImageView's callback delegate.
Basically, as soon as you actually have the image, you can save the image.
Trying to use OpenFlow API for iPhone SDK.
I need the openflow to load pictures from a (image) link.
This is how it always works with local images:
loadImagesOperationQueue = [[NSOperationQueue alloc] init];
NSString *imageName;
for (int i=0; i < 10; i++) {
imageName = [[NSString alloc] initWithFormat:#"cover_%d.jpg", i];
[(AFOpenFlowView *)self.view setImage:[UIImage imageNamed:imageName] forIndex:i];
[imageName release];
NSLog(#"%d is the index",i);
}
[(AFOpenFlowView *)self.view setNumberOfImages:10];
And I tried this:
- (void)openFlowView:(AFOpenFlowView *)openFlowView requestImageForIndex:(int)index {
NSString *photoUrl = [[oldEntries objectAtIndex: 0] objectForKey: #"still"];
NSURL *photomake = [NSURL URLWithString:photoUrl];
NSLog(#"theConnection: %#",photoUrl);
NSLog(#"theConnection: %#",photomake);
AFGetImageOperation *getImageOperation = [AFGetImageOperation alloc];
// We're getting our images from the Flickr API.
getImageOperation.imageURL = photomake;
[loadImagesOperationQueue addOperation:getImageOperation];
[(AFOpenFlowView *)self.view setNumberOfImages:1];
[getImageOperation release];
}
But it just won't work. Can anyone help me?
Without knowing what 'won't work' it's hard to say, please clarify and supply the actual URL you are creating.
The only line that looks suspect is this one:
AFGetImageOperation *getImageOperation = [AFGetImageOperation alloc];
Should be:
AFGetImageOperation *getImageOperation = [[AFGetImageOperation alloc] init];
It's much easier to use:
NSURL *imageUrl = [[NSURL alloc] initWithString:[#"path/to/the/file.jpg"];
NSData *imageData = [NSData dataWithContentsOfURL:imageUrl];
UIImage *image = [UIImage imageWithData:imageData];
put all the images in an Array
and then you call you first function
for (int i=0; i < 10; i++) {
imageName = [[NSString alloc] initWithFormat:#"cover_%d.jpg", i];
[(AFOpenFlowView *)self.view setImage:**image** forIndex:i];
[imageName release];
NSLog(#"%d is the index",i);
}
[(AFOpenFlowView *)self.view setNumberOfImages:10];
My app has to load an image from a http server and displaying it into an UIImageView
How can i do that??
I tried this:
NSString *temp = [NSString alloc];
[temp stringwithString:#"http://192.168.1.2x0/pic/LC.jpg"]
temp=[(NSString *)CFURLCreateStringByAddingPercentEscapes(
nil,
(CFStringRef)temp,
NULL,
NULL,
kCFStringEncodingUTF8)
autorelease];
NSData *dato = [NSData alloc];
dato=[NSData dataWithContentsOfURL:[NSURL URLWithString:temp]];
pic = [pic initWithImage:[UIImage imageWithData:dato]];
This code is in viewdidload of the view but nothing is displayed!
The server is working because i can load xml files from it. but i can't display that image!
I need to load the image programmatically because it has to change depending on the parameter passed!
Thank you in advance.
Antonio
It should be:
NSURL * imageURL = [NSURL URLWithString:#"http://192.168.1.2x0/pic/LC.jpg"];
NSData * imageData = [NSData dataWithContentsOfURL:imageURL];
UIImage * image = [UIImage imageWithData:imageData];
Once you have the image variable, you can throw it into a UIImageView via it's image property, ie:
myImageView.image = image;
//OR
[myImageView setImage:image];
If you need to escape special characters in your original string, you can do:
NSString * urlString = [#"http://192.168.1.2x0/pic/LC.jpg" stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
NSURL * imageURL = [NSURL URLWithString:urlString];
....
If you're creating your UIImageView programmatically, you do:
UIImageView * myImageView = [[UIImageView alloc] initWithImage:image];
[someOtherView addSubview:myImageView];
[myImageView release];
And because loading image from URL takes ages, it would be better to load it asynchronously. The following guide made it stupid-simple for me:
http://www.switchonthecode.com/tutorials/loading-images-asynchronously-on-iphone-using-nsinvocationoperation
Try this
NSURL *url = [NSURL URLWithString:#"http://192.168.1.2x0/pic/LC.jpg"];
NSData *data = [NSData dataWithContentsOfURL:url];
UIImageView *subview = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f,320.0f, 460.0f)];
[subview setImage:[UIImage imageWithData:data]];
[cell addSubview:subview];
[subview release];
All the Best.
This is the actual code.
UIImageView *myview=[[UIImageView alloc]init];
myview.frame = CGRectMake(0, 0, 320, 480);
NSURL *imgURL=[[NSURL alloc]initWithString:#"http://soccerlens.com/files/2011/03/chelsea-1112-home.png"];
NSData *imgdata=[[NSData alloc]initWithContentsOfURL:imgURL];
UIImage *image=[[UIImage alloc]initWithData:imgdata];
myview.image=image;
[self.view addSubview:myview];
You should load the image in the background or the view will freeze.
Try this:
UIImage *img = [[UIImage alloc] init];
dispatch_async(dispatch_get_global_queue(0,0), ^{
NSData * data = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString:#"http://www.test.com/test.png"];
img = [UIImage imageWithData: data];
dispatch_async(dispatch_get_main_queue(), ^{
//PUT THE img INTO THE UIImageView (imgView for example)
imgView.image = img;
});
});