uiimage

problem with Image in custom Cell

Hi.. Getting image data from sqlite database but not able to display in custom cell of imageview.is there any conversion of image data into image. ...

Relation between UIView and UIImageView regarding animations... iPhone SDK

I have some animation blocks in my code which are causing my problems when I upgrade to iPhone OS4. I have read that it is now advised to use block-animations so I thought I would see if this solved my problems. Before I was using the following type of code to make an animation... [UIImageView beginAnimations:nil context:NULL]; [UIIma...

Problem in creating image of UIView

Hi guy, I want to create an UIImage of UIWebView and then I want to draw that image. Here is my code: UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 768, 1004)]; tempView.backgroundColor = [UIColor blueColor]; UIGraphicsBeginImageContext(tempView.bounds.size); [tempView drawRect:tempView.bounds]; UIIm...

Memory leaks when apply an image mask with CGImageMaskCreate/imageWithCGImage

This code leaks, if someone can tell me why? UIGraphicsBeginImageContext(drawingImage.frame.size); [drawingImage.image drawInRect:CGRectMake(0, 0, drawingImage.frame.size.width, drawingImage.frame.size.height)]; // Draw some vectorial data // ... // Apply an image mask CGImageRef maskRef = mask.CGImage; CG...

How to Create UIImage from NSData and Avatar Data of XMPP?

Hi, This question is related to Iphone SDK, NSData and UIImage. I am trying to create an image from the Avatar Data returned from the xmpp like the following: <presence from='[email protected]/spark' to='[email protected]/424978324712783686768453' id='Oj02v-45'><status>Away due to idle.</status><priority>0</priority><show>away</show><x...

Changing background images of UIView.

I have a class : @interface UIExView : UIView { ....... } In another class, UIExView is defined as following: IBOutlet UIExView* exView; exView is connected to an View in XIB. I set background image of exView as: UIColor* bgrColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed: backgroundImageName]]; exView.backgroundCo...

How to create UIIMage from Hex Data?

Hi, I am using XMPP and XMPP will give me a photo data like the following: a3f549fa9705e7ead2905de0b6a804227ecdd404 So I assume the above data is the photo data and I assume that it's Hex data. (maybe I am wrong) So I use the following to create the UIImage, but it doesn't work anyone know how to do it? What I am trying to do is to ch...

Subclassing UIImageView - animation images do not display or appear.

Hi everyone, I'm trying to subclass UIImageView in order to create an instance of the subclass which plays different animations, depending on a variable I send it. My initial code (before subclassing) for playing a specific 2 frame animation looked like this. 'bubbleAnimationTemp' is just a UIImageView object I declared in the header: ...

Overlay layer on photo, and export result at higher resolution than the native display.

I want to take a photo with the device's camera, overlay a CALayer on top of it, and export the photo at the native resolution of the device's camera. The best solution i could come up with so far, was to overlay the CALayer on top of the UIView, and capture the current view state using [CALayer renderInContext:]. However the result of ...

Matrix malloc Image Processing

Hello guys, I 'm trying to develop an Image Processing application for the images stored at the photo library of the iPhone, but to tell the truth I am confused. I'm interested in getting the A R G B matrixes out of the image. then make some algorithm with these matrixes and then releasing them. What would you prefer for the aforemention...

Need to create a snapshot of a view at runtime...

Hi, i need to take a snapshot of my current ipad-view. That view loads and plays a video. I found this function which works almost really well. - (UIImage*)captureView:(UIView *)view { CGRect rect = [[UIScreen mainScreen] bounds]; UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentCont...

Must drawInRect: for a separate context be executed on the main thread?

[update: this problem has been resolved; the issue was not in drawInRect: but in UIGraphicsBeginImageContext()] In my app, I'm grabbing a bunch of large images, cropping them down to thumbnail size and storing the thumbnails for previewing. Note that I'm doing this in a separate image context -- this is not about redrawing a UIView th...

How can I load images into the iphone system cache?

I have a tableView with some large images in it. I'm struggling to improve the very jerky scrolling performance. If I use ImageNamed to load the images, scrolling is jerky at first, but after the images are viewed, scrolling is smooth. I know ImageNamed adds the images into the system cache, so my question is: is it possible to pre-load ...

colorWithPatternImage with iPhone 4 Retina Display ([email protected])

Thanks to SO's search function blowing up whenever I enter "@2x", it's difficult to tell whether this has already been asked... I've been using colorWithPatternImage: to build tiled background images for my various views. However, these predictably look like trash when viewed on the new iPhone 4 display. So I've built @2x versions of ...

Getting allocation count plus one at UIImage in objective-c?

Hi Guys, I am getting allocation count plus one in the below code. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"MyIdentifier"]; if (cell == nil) { cell = [[[UITableVie...

retrieving grey color value of UIImage with colorSpace CGColorSpaceCreateDeviceGray

Hi, I have an UIImage with colorSpace CGColorSpaceCreateDeviceGray. Can anybody tell me, how I can access the grey color value for a specific x and y position. br, martin ...

Get Pixel Value for GrayScale image

Hello, i have tried the following code to read the pixel values of an Image (GrayScale). I am not that familiar with GrayScale Images and i know that there should be just one color component. can anybody tell me how i have to modify the following code to get the pixel values of an UIImage in Gray Scale ? +(void) getPixelColorAtLocation:...

Load 100 UIImages

I am busy with an iPhone application. A part of it I load 100 small images from Flickr as an UIButton. The problem is how to handle the memory. it loads around 5-6 mb each time. When I dealloc the view trough navigationController popViewController the memory stays almost the same. What I do now is loop all the images and put the request...

iphone save multiple views screenshot

Hi, I have an UIImagePickerController to which I add some subviews that contain images. I need to save the whole content as an image, but fail to do this. For saving the content of the context i use the following code UIGraphicsBeginImageContext(self.view.frame.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UI...

Get Image Position in iphone application

Hi Dude, I like to get the position ie. xposition and yposition of an image in my code. How to extract the positions. Can some one guide me. Thanks in advance. ...