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2014/10/15 ¤U¤È 10:05:05
iphone Programming Glossary: cgsizemakeHow do I make UILabel display outlined text? http://stackoverflow.com/questions/1103148/how-do-i-make-uilabel-display-outlined-text
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path animationWithKeyPath @ bounds.size resizeAnimation setToValue NSValue valueWithCGSize CGSizeMake 40.0f imageFrame.size.height 40.0f imageFrame.size.width resizeAnimation.fillMode kCAFillModeForwards..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell for your cell. UIFont cellFont UIFont fontWithName @ Helvetica size 17.0 CGSize constraintSize CGSizeMake 280.0f MAXFLOAT CGSize labelSize cellText sizeWithFont cellFont constrainedToSize constraintSize lineBreakMode..
Getting thumbnail from a video url or data in IPhone SDK http://stackoverflow.com/questions/1347562/getting-thumbnail-from-a-video-url-or-data-in-iphone-sdk UIControlStateNormal thumbImg UIImage imageWithCGImage im retain generator release CGSize maxSize CGSizeMake 320 180 generator.maximumSize maxSize generator generateCGImagesAsynchronouslyForTimes NSArray arrayWithObject..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage 390 pixels. I was using this method to resize the image UIImage newImage image _imageScaledToSize CGSizeMake 290 390 interpolationQuality 1 It works perfectly but it's an undocumented function so I can't use..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav view controller I set the view's popover context size like so self setContentSizeForViewInPopover CGSizeMake 320 500 size different for each controller This works as expected as I navigate forward in the hierarchy.. CGSize currentSetSizeForPopover self.contentSizeForViewInPopover CGSize fakeMomentarySize CGSizeMake currentSetSizeForPopover.width 1.0f currentSetSizeForPopover.height 1.0f self.contentSizeForViewInPopover..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints self.bounds.size.height CGFloat imageScaleFactor MAX scaleForWidth scaleForHeight CGSize imageSize CGSizeMake baseImage.size.width imageScaleFactor baseImage.size.height imageScaleFactor CGRect imageRect CGRectMake..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer green 0.0f blue 0.0f alpha 0.5f CGContextSaveGState context CGContextSetShadowWithColor context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app roundf bounds.size.height ratio CGFloat scaleRatio bounds.size.width width CGSize imageSize CGSizeMake CGImageGetWidth imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation..
How do I draw a shadow under a UIView? http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview UIGraphicsGetCurrentContext CGContextSaveGState currentContext CGContextSetShadow currentContext CGSizeMake 15 20 5 CGContextRestoreGState currentContext super drawRect rect ..but this doesn't work for me and.. should be affected by the shadow setting needs to happen after CGContextSetShadow currentContext CGSizeMake 15 20 5 but before CGContextRestoreGState currentContext So if you want the superclass's drawRect to..
How do I make UILabel display outlined text? http://stackoverflow.com/questions/1103148/how-do-i-make-uilabel-display-outlined-text
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path NO Set up scaling CABasicAnimation resizeAnimation CABasicAnimation animationWithKeyPath @ bounds.size resizeAnimation setToValue NSValue valueWithCGSize CGSizeMake 40.0f imageFrame.size.height 40.0f imageFrame.size.width resizeAnimation.fillMode kCAFillModeForwards resizeAnimation.removedOnCompletion NO Set up path movement..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell NSIndexPath indexPath NSString cellText @ Go get some text for your cell. UIFont cellFont UIFont fontWithName @ Helvetica size 17.0 CGSize constraintSize CGSizeMake 280.0f MAXFLOAT CGSize labelSize cellText sizeWithFont cellFont constrainedToSize constraintSize lineBreakMode UILineBreakModeWordWrap return labelSize.height 20..
Getting thumbnail from a video url or data in IPhone SDK http://stackoverflow.com/questions/1347562/getting-thumbnail-from-a-video-url-or-data-in-iphone-sdk error button setImage UIImage imageWithCGImage im forState UIControlStateNormal thumbImg UIImage imageWithCGImage im retain generator release CGSize maxSize CGSizeMake 320 180 generator.maximumSize maxSize generator generateCGImagesAsynchronouslyForTimes NSArray arrayWithObject NSValue valueWithCMTime thumbTime completionHandler..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage a picture with the camera then I want to resize it to 290 390 pixels. I was using this method to resize the image UIImage newImage image _imageScaledToSize CGSizeMake 290 390 interpolationQuality 1 It works perfectly but it's an undocumented function so I can't use it anymore with iPhone OS4. So... what is the simplest way to..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav of view controllers. I followed the docs and for each view controller I set the view's popover context size like so self setContentSizeForViewInPopover CGSizeMake 320 500 size different for each controller This works as expected as I navigate forward in the hierarchy the popover automatically animates size changes to correspond.. that would do the trick with setting the size void forcePopoverSize CGSize currentSetSizeForPopover self.contentSizeForViewInPopover CGSize fakeMomentarySize CGSizeMake currentSetSizeForPopover.width 1.0f currentSetSizeForPopover.height 1.0f self.contentSizeForViewInPopover fakeMomentarySize self.contentSizeForViewInPopover currentSetSizeForPopover..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints CGFloat scaleForHeight baseImage.size.height self.bounds.size.height CGFloat imageScaleFactor MAX scaleForWidth scaleForHeight CGSize imageSize CGSizeMake baseImage.size.width imageScaleFactor baseImage.size.height imageScaleFactor CGRect imageRect CGRectMake self.bounds.size.width imageSize.width 2 self.bounds.size.height..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer properties on the context aColor UIColor colorWithRed 0.0f green 0.0f blue 0.0f alpha 0.5f CGContextSaveGState context CGContextSetShadowWithColor context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState context CGContextAddPath context path CGContextEOFillPath..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app ratio else bounds.size.height kMaxResolution bounds.size.width roundf bounds.size.height ratio CGFloat scaleRatio bounds.size.width width CGSize imageSize CGSizeMake CGImageGetWidth imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation switch orient case UIImageOrientationUp EXIF..
How do I draw a shadow under a UIView? http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview void drawRect CGRect rect CGContextRef currentContext UIGraphicsGetCurrentContext CGContextSaveGState currentContext CGContextSetShadow currentContext CGSizeMake 15 20 5 CGContextRestoreGState currentContext super drawRect rect ..but this doesn't work for me and I'm a bit stuck about a where to go next and b if there's anything.. superclass's implementation of drawRect . Any drawing that should be affected by the shadow setting needs to happen after CGContextSetShadow currentContext CGSizeMake 15 20 5 but before CGContextRestoreGState currentContext So if you want the superclass's drawRect to be 'wrapped' in a shadow then how about if you rearrange your..
How do I make UILabel display outlined text? http://stackoverflow.com/questions/1103148/how-do-i-make-uilabel-display-outlined-text
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path resizeAnimation CABasicAnimation animationWithKeyPath @ bounds.size resizeAnimation setToValue NSValue valueWithCGSize CGSizeMake 40.0f imageFrame.size.height 40.0f imageFrame.size.width resizeAnimation.fillMode kCAFillModeForwards resizeAnimation.removedOnCompletion..
How do I wrap text in a UITableViewCell without a custom cell http://stackoverflow.com/questions/129502/how-do-i-wrap-text-in-a-uitableviewcell-without-a-custom-cell @ Go get some text for your cell. UIFont cellFont UIFont fontWithName @ Helvetica size 17.0 CGSize constraintSize CGSizeMake 280.0f MAXFLOAT CGSize labelSize cellText sizeWithFont cellFont constrainedToSize constraintSize lineBreakMode UILineBreakModeWordWrap..
http://stackoverflow.com/questions/1309757/blend-two-uiimages foreground image is a transparent image with lines on it. I am trying to do it this way. UIGraphicsBeginImageContext CGSizeMake 320 480 CGContextRef context UIGraphicsGetCurrentContext create rect that fills screen CGRect bounds CGRectMake 0 0 320.. UIImage bottomImage UIImage imageNamed @ bottom.png UIImage image UIImage imageNamed @ top.png CGSize newSize CGSizeMake width height UIGraphicsBeginImageContext newSize Use existing opacity as is bottomImage drawInRect CGRectMake 0 0 newSize.width..
Getting thumbnail from a video url or data in IPhone SDK http://stackoverflow.com/questions/1347562/getting-thumbnail-from-a-video-url-or-data-in-iphone-sdk im forState UIControlStateNormal thumbImg UIImage imageWithCGImage im retain generator release CGSize maxSize CGSizeMake 320 180 generator.maximumSize maxSize generator generateCGImagesAsynchronouslyForTimes NSArray arrayWithObject NSValue valueWithCMTime..
How Do I Take a Screen Shot of a UIView? http://stackoverflow.com/questions/2214957/how-do-i-take-a-screen-shot-of-a-uiview shot of a specific UIView as a UIImage. I tried this code but all I get is a blank image. UIGraphicsBeginImageContext CGSizeMake 320 480 CGContextRef context UIGraphicsGetCurrentContext myUIView.layer drawInContext context UIImage screenShot UIGraphicsGetImageFromCurrentImageContext..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage to resize it to 290 390 pixels. I was using this method to resize the image UIImage newImage image _imageScaledToSize CGSizeMake 290 390 interpolationQuality 1 It works perfectly but it's an undocumented function so I can't use it anymore with iPhone..
Popover with embedded navigation controller doesn't respect size on back nav http://stackoverflow.com/questions/2752394/popover-with-embedded-navigation-controller-doesnt-respect-size-on-back-nav docs and for each view controller I set the view's popover context size like so self setContentSizeForViewInPopover CGSizeMake 320 500 size different for each controller This works as expected as I navigate forward in the hierarchy the popover automatically.. size void forcePopoverSize CGSize currentSetSizeForPopover self.contentSizeForViewInPopover CGSize fakeMomentarySize CGSizeMake currentSetSizeForPopover.width 1.0f currentSetSizeForPopover.height 1.0f self.contentSizeForViewInPopover fakeMomentarySize..
Fixed labels in the selection bar of a UIPickerView http://stackoverflow.com/questions/367471/fixed-labels-in-the-selection-bar-of-a-uipickerview 20 label.backgroundColor UIColor clearColor label.shadowColor UIColor whiteColor label.shadowOffset CGSizeMake 0 1 picker insertSubview label aboveSubview picker.subviews objectAtIndex 5 When you have multiple components sections .....
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints self.bounds.size.height CGFloat imageScaleFactor MAX scaleForWidth scaleForHeight CGSize imageSize CGSizeMake baseImage.size.width imageScaleFactor baseImage.size.height imageScaleFactor CGRect imageRect CGRectMake self.bounds.size.width..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer colorWithRed 0.0f green 0.0f blue 0.0f alpha 0.5f CGContextSaveGState context CGContextSetShadowWithColor context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState context..
Drawing waveform with AVAssetReader http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader sampleCount NSInteger sampleCount channelCount NSInteger channelCount imageHeight float imageHeight CGSize imageSize CGSizeMake sampleCount imageHeight UIGraphicsBeginImageContext imageSize CGContextRef context UIGraphicsGetCurrentContext CGContextSetFillColorWithColor.. sampleCount NSInteger sampleCount channelCount NSInteger channelCount imageHeight float imageHeight CGSize imageSize CGSizeMake sampleCount imageHeight UIGraphicsBeginImageContext imageSize CGContextRef context UIGraphicsGetCurrentContext CGContextSetFillColorWithColor..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app bounds.size.width roundf bounds.size.height ratio CGFloat scaleRatio bounds.size.width width CGSize imageSize CGSizeMake CGImageGetWidth imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation switch..
How do I draw a shadow under a UIView? http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview currentContext UIGraphicsGetCurrentContext CGContextSaveGState currentContext CGContextSetShadow currentContext CGSizeMake 15 20 5 CGContextRestoreGState currentContext super drawRect rect ..but this doesn't work for me and I'm a bit stuck about.. . Any drawing that should be affected by the shadow setting needs to happen after CGContextSetShadow currentContext CGSizeMake 15 20 5 but before CGContextRestoreGState currentContext So if you want the superclass's drawRect to be 'wrapped' in a shadow..
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