2014/10/15 下午 10:08:27

iphone Programming Glossary: erased

http://stackoverflow.com/questions/1355527/improving-finger-painting-performance

Simple Painting Fingering the iPhone screen paints temporary graphics to a UIView. These temporary graphics are erased after a touch ends and are then stored into an underlying UIView. The process is simple 1 Touch Starts Moves 2 Paint Temporary..

How to Unerase the erased UIImage

http://stackoverflow.com/questions/14053563/how-to-unerase-the-erased-uiimage

to Unerase the erased UIImage Hi Guys I am trying a Image erasing code in my PanGesture I am using code below UIImage image UIImage imageNamed..

Drawing incrementally in a UIView (iPhone)

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

As far as I have understood so far every time I draw something in the drawRect of a UIView the whole context is erased and then redrawn. So I have to do something like this to draw a series of dots Method A drawing everything on every call..

write data line by line on iphone

http://stackoverflow.com/questions/4406343/write-data-line-by-line-on-iphone

data line by line on iphone i can write to a text file on iphone..but each time i write my previous value is erased is there any way to keep writing data separated by n this is my code NSString cc @ 1 cc writeToFile storePath atomically..

How erase part of UIImage

http://stackoverflow.com/questions/4526336/how-erase-part-of-uiimage

CGPointZero You draw the image in the new context. Only the clipped region will be drawn so the rest is effectively erased. imageView.image UIGraphicsGetImageFromCurrentImageContext Now here you just ask the system to give you back the image drawn..

Rating and reviews from within an IOS app [duplicate]

http://stackoverflow.com/questions/4784248/rating-and-reviews-from-within-an-ios-app

to prompt a message asking my user to rate the app In app purchases can be rated Someone told me that when an app was erased it was possible to ask the user to ask rate the app but that feature was removed in IOS4. It's this true the SDK provides..

Need some help understanding transient properties in Core Data

http://stackoverflow.com/questions/7504391/need-some-help-understanding-transient-properties-in-core-data

for any useful purpose other than temporary caches of computed values because those instance variables could be erased at any moment. I know they won't be persisted on disk but I thought they would at least be persisted as long as I retained..

How can I erase UIBezierPath lines drawn on a transparent view above an image?

http://stackoverflow.com/questions/7979937/how-can-i-erase-uibezierpath-lines-drawn-on-a-transparent-view-above-an-image

UIView: how to do non-destructive drawing?

http://stackoverflow.com/questions/865636/uiview-how-to-do-non-destructive-drawing

be prepared to redraw the entire rectangle whenever drawRect is called. You cannot prevent the contents from being erased by doing the following self setClearsContextBeforeDrawing NO This is merely a hint to the graphics engine that there is.. for you since you will likely need to re draw the whole area anyway. It may prevent your view from being automatically erased but you cannot depend on it . To draw on top of your view without erasing do your drawing to an off screen bitmap context..