image alignment problem in imageView - iPhone - iphone

I have following code in my application:
// to set tip - photo in photo frame
NSData *data = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:pathOfThumbNail]];
UIImage *cellThumbImg;
if([data length]>0){
cellThumbImg = [UIImage imageWithData:data];
} else {
cellThumbImg = [UIImage imageNamed:#"130X90.gif"];
}
UIImageView *imgView = [[UIImageView alloc]initWithImage:cellThumbImg];
imgView.frame = photoFrame;
[imgBg setContentMode:UIViewContentModeScaleToFill];
[cell.contentView addSubview:imgView];
//[cell.contentView sendSubviewToBack:imgView];
[imgView release];
[data release];
I want the following:
Suppose an image ( which is loaded through nsdata ) is having size of 60 x 60 then content mode should be UIVIewContentModeCenter
Suppose an image ( which is loaded through nsdata ) is having more size then 60 x 60 then content mode should be UIViewContentModeScaleToFill.
But my question is how can I determine the size of the image loaded through NSData?

You can remove the following line because the UIImageView will size itself according to the image used to initialize it:
imgView.frame=photoFrame;
From there you can get the size of the image by taking the size of the UIImageView:
CGRect image_bounds = imgView.frame;

I tried following code & it worked.
// to set tip - photo in photo frame
NSData *data=[[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:pathOfThumbNail]];
UIImage *cellThumbImg;
if([data length]>0)
{
cellThumbImg=[UIImage imageWithData:data];
}
else
{
cellThumbImg=[UIImage imageNamed:#"130X90.gif"];
}
UIImageView *imgView=[[UIImageView alloc]initWithImage:cellThumbImg];
imgView.frame=photoFrame;
(cellThumbImg.size.height>60 || cellThumbImg.size.width>60 ) ?
[imgView setContentMode:UIViewContentModeScaleToFill] :
[imgView setContentMode:UIViewContentModeCenter] ;
[cell.contentView addSubview:imgView];
[imgView release]; [data release];

Related

UIImage+AFNetworking doesn't work

I have an image link, now i want to load this image in my app and i using category
[test setImageWithURL:[NSURL URLWithString:#"close"]];
link image is:
close
i see that link image is quite ok, but imageview can not load the image. Please tell me why, thanks!
ok try this
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
dispatch_async(queue, ^(void) {
NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"http://216.57.222.146:8080/Stafflink_Web/images/assets/5108029/5108029_0_resized.jpg"];
UIImage* image = [[UIImage alloc] initWithData:imageData];
if (image) {
dispatch_async(dispatch_get_main_queue(), ^{
if (cell.tag == indexPath.row) {
test.image = image;
}
});
}
});
Is test a UIImageView object? It needs to be.
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 100.0f)];
[imageView setImageWithURL:[NSURL URLWithString:#"http://i.imgur.com/r4uwx.jpg"] placeholderImage:[UIImage imageNamed:#"placeholder-avatar"]];

UIImageView image not showing up at all

im using the followng method , to display image when a timestamp detecetd , am using
dispatch_async(dispatch_get_main_queue(), to do UIImageView , its never works its should open a new screen full size image that it ,
dispatch_async(dispatch_get_main_queue(), ^{
UIImage *myImage = [UIImage imageNamed:#"img.jpg"];
UIImageView *myImageView = [[UIImageView alloc] initWithImage:myImage];
[myImageView setFrame:CGRectMake(0, 0, 100, 200)];
[myImageView release];
;
});
my full code
- (void) onPayload:(PayloadEvent *) event
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSString *header = #"[OnPayload] ";
if (event.payloadType == TYPE_IDENTIFIED)
{
if ((event.contentID != -1) && (event.timeStamp == -1))
{
[mUI performSelectorOnMainThread: #selector(Trace:) withObject:[NSString stringWithFormat:#"%# StaticID detected: %x\t\tConfidence: %f\n", header,(int)event.contentID, event.confidence] waitUntilDone:NO];
}
if ((event.timeStamp != -1) && (event.contentID == -1))
{
[mUI performSelectorOnMainThread: #selector(Trace:) withObject:[NSString stringWithFormat:#"%# Timestamp detected: %f\t\tConfidence: %f\n", header, event.timeStamp, event.confidence] waitUntilDone:NO];
dispatch_async(dispatch_get_main_queue(), ^{
UIImage *myImage = [UIImage imageNamed:#"img.jpg"];
UIImageView *myImageView = [[UIImageView alloc] initWithImage:myImage];
[myImageView setFrame:CGRectMake(0, 0, 100, 200)];
[myImageView release];
; });
You never add myImageView to any view as a subview.
Try to use this one in your code.
[self.view addSubview:myImageView];
You are creating an ImageView, assigning an Image to it and releasing the ImageView. In other words, you're not displaying the ImageView anywhere.
If you can't do something like [self.view addSubview:imageView], it means that you're not running this code on a UIViewController subclass.
You basically need to add this ImageView you're creating as a subview for the current view before releasing it.
In which class are you running this code? Do you know which View Controller is currently being displayed?

How to remove overlapping uiimageview?

I tried to change the image in the imageview but I can't seem to do that.
My code shown below creates a new subview for each image to display. However, the images just overlap and shows the overlapped images at the end which is not supposed to be.
.m:
for (int i = 0; i < [imageArr count]; i++) {
NSArray *imageNameArr = [[imageArr objectAtIndex:i] componentsSeparatedByString:#"."];
check=line;
NSString *msg = [textView.text stringByAppendingString:[NSString stringWithFormat:#"Opening image: %#\n",[imageArr objectAtIndex:i]]];
[textView performSelectorOnMainThread:#selector(setText:) withObject:msg waitUntilDone:NO];
line=line+1;
NSString *imagePath = [NSString stringWithFormat:#"%#/%#",jName,[imageArr objectAtIndex:i]];
NSString *imageFile = [NSHomeDirectory() stringByAppendingPathComponent:imagePath];
NSLog(#"------------------------------");
NSLog(#"ImageFile: %#\n",imageFile);
NSLog(#"Interger value: %i\n",i);
UIImage *myImage = [UIImage imageWithContentsOfFile:imageFile];
UIImageView *imageView = [[UIImageView alloc] initWithImage:myImage];
imageView.contentMode = UIViewContentModeScaleAspectFit;
[scrollView addSubview:imageView];
[imageView release];
.....
.....
}
How to show the images individually, without overlapping?
put this line out of for loop:
UIImageView *imageView = [[UIImageView alloc] initWithImage:myImage];
[scrollView addSubview:imageView];
and use it like:
UIImageView *imageView = [[UIImageView alloc] init];
[scrollView addSubview:imageView];
and use:
[imageView setImage:[UIImage imageWithContentsOfFile:fullImgNm]];
Inside for loop.
You create the imageview out of loop and change the source(Image) for that imageview inside the loop.
You do this before loop starts,
UIImageView *imageView = [[UIImageView alloc] init];
[scrollView addSubview:imageView];
and add the image like this inside the loop,
[imageView setImage:[UIImage imageWithContentsOfFile:imageFile]];

how to display Image in ImageView?

I am new to programming and developing my first application, but I want to know that how can I display image to imageView.
Programmatically :
From http://www.iphoneexamples.com/:
CGRect myImageRect = CGRectMake(0.0f, 0.0f, 320.0f, 109.0f);
UIImageView *myImage = [[UIImageView alloc] initWithFrame:myImageRect];
[myImage setImage:[UIImage imageNamed:#"myImage.png"]];
myImage.opaque = YES; // explicitly opaque for performance
[self.view addSubview:myImage];
[myImage release];
Where myImage.png is an png format image which you will import to your resources folder.
Using Nib(Xib File):
Open your.xib file.
Go to Tools -> Library.
Drag and drop one UIImageView on your .xib.
Open Attribute Inspector of the ImageView(Press Cmd + 1).
You'll get one Image property. Set the image you want from your Resource folder using the drop-down list.
There you got it. :-)
// First way
myImage.image = [UIImage imageNamed:#"myImage.png"];
// Second way
NSString *fullpath = [[[NSBundle mainBundle] bundlePath] stringByAppendingString:#"/myImage.png"];
myImage.image = [UIImage imageWithContentsOfFile:fullpath];
Check out UIImageView class reference here
Read http://www.iphoneexamples.com/
CGRect myImageRect = CGRectMake(0.0f, 0.0f, 320.0f, 109.0f);
UIImageView *myImage = [[UIImageView alloc] initWithFrame:myImageRect];
[myImage setImage:[UIImage imageNamed:#"myImage.png"]];
myImage.opaque = YES; // explicitly opaque for performance
[self.view addSubview:myImage];
[myImage release];
UIImageView *imageView=[[UIImageView alloc] init];
[imageView setImage:[UIImage imageNamed:#"yourImage.png"]];
(If you have created imageView from IB and have outlet-ed it then ignore First Line)
Try it using:
imgView.image = [UIImage imageNamed:#"test.png"];

error while setting image in imageView in iphone

I have written a code for setting imageview ...as per the button clicked...but my problem is when i press the button it is giving me the error like...too many arguments to function ImageNamed...while executing this line...
UIImage* photo = [UIImage imageNamed:#"robort %d.jpg",x];
the whole code is....
-(void)buttonClicked:(UIButton*)button
{
NSLog(#"%d",button.tag);
int x;
x=button.tag;
// Create the image view.
UIImage* photo = [UIImage imageNamed:#"robort %d.jpg",x];
NSLog(#"%d",x);
CGSize photoSize = [photo size];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, photoSize.width, photoSize.height)];
[imageView setImage:photo];
[self.view addSubview:imageView]; }
use UIImage* photo = [UIImage imageNamed:[NSString stringWithFormat:#"robort de nero%d.jpg",x]];
cheers :)
Try this
-(void)buttonClicked:(UIButton*)button
{
NSLog(#"%d",button.tag);
int x;
x=button.tag;
// Create the image view.
NSString *imageName = [NSString stringWithFormat:#"robort %d.jpg",x];
UIImage* photo = [UIImage imageNamed:imageName];
NSLog(#"%d",x);
CGSize photoSize = [photo size];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, photoSize.width, photoSize.height)];
[imageView setImage:photo];
[self.view addSubview:imageView];
}
You need to use:
UIImage* photo = [UIImage imageNamed:[NSString stringWithFormat:#"robort %d.jpg",x]];
Use this
UIImage* photo = [UIImage imageNamed:[NSString stringWithFormat:#"robort %d.jpg",x]];