2014/10/15 下午 10:10:10

iphone Programming Glossary: image's

How to upload multiple photos to Facebook from within iPhone app?

http://stackoverflow.com/questions/10197414/how-to-upload-multiple-photos-to-facebook-from-within-iphone-app

for the publish_stream credential POST https graph.facebook.com USER_ID photos message optional description source the image's data place optional image's location With the iOS Facebook Connect SDK that would give us this call given you have a Facebook.. POST https graph.facebook.com USER_ID photos message optional description source the image's data place optional image's location With the iOS Facebook Connect SDK that would give us this call given you have a Facebook instance called facebook..

Retrieving a pixel alpha value for a UIImage

http://stackoverflow.com/questions/1042830/retrieving-a-pixel-alpha-value-for-a-uiimage

. Edit after reading code You also want to set the blend mode to replace before drawing the image since you want the image's alpha value not the one which was in the context's buffer before CGContextSetBlendMode context kCGBlendModeCopy Edit after..

iOS Image Orientation has Strange Behavior

http://stackoverflow.com/questions/10600613/ios-image-orientation-has-strange-behavior

detail read this answer http graphicssoft.about.com od digitalphotography f sideways pictures.htm try reading your image's exif here http www.exifviewer.org or http regex.info exif.cgi or http www.addictivetips.com internet tips view complete..

Thumbnail view of images

http://stackoverflow.com/questions/1215869/thumbnail-view-of-images

question on masking out round corners on an image similar to the app icons used on the home screen. Added Using an image's built in thumbnail There's a nice function called CGImageSourceCreateThumbnailAtIndex that understands built in thumbnails..

Drawing incrementally in a UIView (iPhone)

http://stackoverflow.com/questions/1798414/drawing-incrementally-in-a-uiview-iphone

previous stuff UIGraphicsBeginImageContext self.frame.size CGContextRef ctx UIGraphicsGetCurrentContext ctx is now the image's context cachedImage drawAtPoint CGPointZero if myPoints count 0 Drop drop myPoints objectAtIndex myPoints count 1 CGContextClipToMask..

How do I scale a UIButton's imageView?

http://stackoverflow.com/questions/1957317/how-do-i-scale-a-uibuttons-imageview

instance named button with a image use UIButton setImage forState function the button.frame is larger than the image's size. Now I want to scale this button's image smaller. I had tried to change button.imageView.frame button.imageView.bounds..

Presenting an image cropping interface

http://stackoverflow.com/questions/2679937/presenting-an-image-cropping-interface

implements the drawRect method and for the most part calls CGImageCreateWithImageInRect to get the portion of the image's bitmap that matches the position of the cropping view and draws that to the CGContext. in the viewcontroller I'm using the..

iPad/iPhone browser crashing when loading images in Javascript

http://stackoverflow.com/questions/2986039/ipad-iphone-browser-crashing-when-loading-images-in-javascript

Instead you need to update the image itself so it takes up very little memory and you can do that by changing the image's src attribute. The quickest way I know of to do that is to use a data URL . So instead of saying this myImage.src path to..

iOS SDK UIViewContentModeScaleAspectFit vs. UIViewContentModeScaleAspectFill

http://stackoverflow.com/questions/3182649/ios-sdk-uiviewcontentmodescaleaspectfit-vs-uiviewcontentmodescaleaspectfill

aspect ratio of the image. The content modes only come into play when the view's aspect ratio is different from the image's. Either override layoutSubviews in your custom UITableViewCell class or create an image view yourself don't use the one..

UIImagePickerController Image Orientation

http://stackoverflow.com/questions/3728612/uiimagepickercontroller-image-orientation

Image Orientation Can anyone tell me how to use the UIImagePickerController camera and album delegates determine the image's orientation rotate accordingly and assign it to a UIImageView iphone cocoa touch uiimagepickercontroller orientation exif.. share improve this question No UIImagePickerController cannot do it explicitly. If you want to determine based on image's content. It is kind of hard problem. How can you determine an image's orientation without understanding the content inside.. it explicitly. If you want to determine based on image's content. It is kind of hard problem. How can you determine an image's orientation without understanding the content inside of it I can suggest you a trick that you examine the width and the..

CoreGraphics for retina display

http://stackoverflow.com/questions/4707465/coregraphics-for-retina-display

To do that you need to multiply all of your coordinates and sizes that use in CoreGraphics routines by the input image's scale property which will be 2.0 on Retina devices to ensure you do all your manipulation at double resolution. Then you..

Getting RGB pixel data from CGImage

http://stackoverflow.com/questions/6073259/getting-rgb-pixel-data-from-cgimage

question Here's some sample code that will print a bunch of relevant info about an image as well as a dump of the image's pixel data. It will work on images with alpha channels as well as images without. The code will even work on images that..

Performing iPhone optimization on externally downloaded PNGs

http://stackoverflow.com/questions/640909/performing-iphone-optimization-on-externally-downloaded-pngs

PNGs When a PNG is added to an XCode iPhone project the compiler optimizes it using pngcrush. Once on the device the image's rendering performance is very fast. My problem is that my application downloads its PNGs from an external source at runtime..

How to get image path from photo library and how to retrieve the image from photo library in iphone?

http://stackoverflow.com/questions/7777282/how-to-get-image-path-from-photo-library-and-how-to-retrieve-the-image-from-phot

iphone uiimagepickercontroller share improve this question UIImagePickerControllerOriginalImage returns only the image's data with no reference to its local storage. I haven't used it myself but I guess what you are looking for is NSURL localUrl..

Moving a Stick figure, anchorpoints, animation, or something else…?

http://stackoverflow.com/questions/7808981/moving-a-stick-figure-anchorpoints-animation-or-something-else

buttons at exactly the screen width and variable screen height position screen width 100 . Let's assume the following image's position is at screen width screen height 2 with a default anchorPoint 0.5f 0.5f . You can see the right half of the image..

How can I rotate a UIImageView with respect to any point (other than its center)?

http://stackoverflow.com/questions/839296/how-can-i-rotate-a-uiimageview-with-respect-to-any-point-other-than-its-center

right. Moving the anchorPoint may move your image so you might need to adjust its position afterwards. To rotate the image's layer about that new anchor point you can change the CATransform3D struct for the layer using something like the following..

Stretching an UIImage while preserving the corners

http://stackoverflow.com/questions/8879817/stretching-an-uiimage-while-preserving-the-corners

arrow.png resizableImageWithCapInsets UIEdgeInsetsMake 15 7 15 15 This results in an image that looks like this if the image's frame is set to 70 pixels wide This is actually what I want but resizableImageWithCapInsets is only supported on iOS 5 and..