2014/10/15 下午 10:11:30

iphone Programming Glossary: modifying

iOS Image Orientation has Strange Behavior

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

code when my algorithm modifies the individual pixels of the image it thinks the image is rotated. So instead of modifying the pixels at the top of the image it modifies the pixels on the side of the image because it thinks it should be rotated..

How to get the RGB values for a pixel on an image on the iphone

http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone

post. I am editing the post at this point however to post what I propose is at least for my requirements which include modifying pixel data a better method as it provides writable data whereas as I understand it the method provided by previous posts..

Control cursor position in UITextField

http://stackoverflow.com/questions/1500233/control-cursor-position-in-uitextfield

cursor position in UITextField I have a UITextField that I'm forcing formatting on by modifying the text inside the change notification handler. This works great once I solved the reentrancy issues but leaves me with..

FFmpeg on iPhone - Modifying Video Orientation

http://stackoverflow.com/questions/2208522/ffmpeg-on-iphone-modifying-video-orientation

far I just need to modify the transform matrix in the 'tkhd' atom. The problem is I am having trouble accessing or modifying this data. I checked out the FFmpeg implementation for static int mov_read_tkhd MOVContext c ByteIOContext pb MOVAtom atom..

Delegates Vs. Notifications in iPhoneOS

http://stackoverflow.com/questions/2232694/delegates-vs-notifications-in-iphoneos

the advantage that multiple objects can observe one notification. With delegates such a thing cannot be done without modifying the delegating object and is unusual . Some advantages of delegating The connection between delegating object and delegate..

apply style to range of text with javascript in uiwebview

http://stackoverflow.com/questions/2887101/apply-style-to-range-of-text-with-javascript-in-uiwebview

A key part of this is also being able to unset the styles. There seem to be two likely paths to follow. One would be modifying some html in Objective C and passing it through javascript as the new innerHTML of some container. The other would be to..

Customizing the More menu on a Tab bar

http://stackoverflow.com/questions/438381/customizing-the-more-menu-on-a-tab-bar

in a subclass of UITabBarController and I have managed to change the background colour of the table by modifying self.moreNavigationController.topViewController.view.backgroundColor but I cannot work out how to change the font colour..

Force iphone app to restart programmatically

http://stackoverflow.com/questions/4399611/force-iphone-app-to-restart-programmatically

when the Logout button is pressed. Has anyone got an code sample to share I've read that it is possible by modifying the main.m file but couldn't find any code related to this. Any help would be appreciated. iphone objective c ios4 application..

Problem setting exif data for an image

http://stackoverflow.com/questions/5125323/problem-setting-exif-data-for-an-image

javax.imageio share improve this question The following blog post is where I got my answer when I had issues with modifying and saving Exif data Caffeinated Cocoa . This works on iOS. Here is my test code for writing Exif and GPS data. It pretty..

Xcode won't recognize my new provisioning profile

http://stackoverflow.com/questions/5291463/xcode-wont-recognize-my-new-provisioning-profile

wasn't able to update itself. Oh well. Now for the fun technical part IMPORTANT As with anything else that involves modifying files you shouldn't be modifying make sure to back up your .xcodeproj bundle and or your entire Xcode project or make sure.. Oh well. Now for the fun technical part IMPORTANT As with anything else that involves modifying files you shouldn't be modifying make sure to back up your .xcodeproj bundle and or your entire Xcode project or make sure your Xcode project is kept in..

What are the Dangers of Method Swizzling in Objective C?

http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c

swizzling is a dangerous practice. Even the name swizzling sugests that it is a bit of a cheat. Method Swizzling is modifying the mapping so that calling selector A will actually invoke implementation B. One use of this is to extend behavior of closed..

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

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

In all other cases modify the position property. Especially if you do bounding box or radius based collision detection modifying the anchor point is counter productive. Let's assume your rectangular sprite image uses a default anchor point which is.. change. What changes is how the texture is centered around that point. You can see the previous image position before modifying the anchor point by looking at the floating dots. In effect all you do by modifying the anchorPoint is to move offset where.. the previous image position before modifying the anchor point by looking at the floating dots. In effect all you do by modifying the anchorPoint is to move offset where the node's texture is drawn relative to the node's position. In the above case the..

Objective-C NSMutableArray mutated while being enumerated?

http://stackoverflow.com/questions/8834031/objective-c-nsmutablearray-mutated-while-being-enumerated

It's nothing to do with your timers. Because I assume your timers are all working on the same thread as your modifying method you don't need to stop and start them. iOS doesn't use an interrupt model for timer callbacks they have to wait their..