2014/10/15 下午 10:09:01
iphone Programming Glossary: fillResizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage uses CG functions you're all set. I also have a similar function to resize and do proper aspect fill on images let me know if that's what you're looking for. Note I got the original function from this..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework We are using the same container A all the way through the process. so in the beginning we want to fill it with n real numbers. after the FFT it is going to be holding n 2 complex numbers. we then throw that..
How do I export UIImage array as a movie? http://stackoverflow.com/questions/3741323/how-do-i-export-uiimage-array-as-a-movie markAsFinished videoWriter endSessionAtSourceTime 因 videoWriter finishWriting You 耱l still have to fill in a lot of blanks but I think that the only really hard remaining part is getting a pixel buffer from..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell @interface CustomCellBackgroundView UIView UIColor borderColor UIColor fillColor CustomCellBackgroundViewPosition position @property nonatomic retain UIColor borderColor fillColor.. fillColor CustomCellBackgroundViewPosition position @property nonatomic retain UIColor borderColor fillColor @property nonatomic CustomCellBackgroundViewPosition position @end CustomCellBackgroundView.m Created.. float ovalWidth float ovalHeight @implementation CustomCellBackgroundView @synthesize borderColor fillColor position BOOL isOpaque return NO id initWithFrame CGRect frame if self super initWithFrame frame..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone a graphic image one pixel wide as the gradient and set the view property to expand the graphic to fill the view assuming you are thinking of a simple linear gradient and not some kind of radial graphic ...
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file a view that serves as a template for your PDF output. You would then write code to load the view fill in any data e.g. set text for UILabels etc. then render the individual elements of the view into the.. options nil for id view in nib if view isKindOfClass UIView class return view return nil I then fill in various elements. I used tags to find the appropriate elements but you could do this other ways...
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer 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.. CGPathRelease visiblePath So essentially there are the following steps Create your path Set the fill color you want add this path to the context and fill the context Now create a larger rectangle that.. the following steps Create your path Set the fill color you want add this path to the context and fill the context Now create a larger rectangle that can bound the visible path. Before closing this path..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app Below is a method that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used HTTP Client to check what I was doing. void sendPayPalRequestPOST..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage using UIGraphicsBeginImageContext . Since the above code only uses CG functions you're all set. I also have a similar function to resize and do proper aspect fill on images let me know if that's what you're looking for. Note I got the original function from this post and did some modifications to make it work on JPEGs. share..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework real side. this is probably the hardest thing to understand. We are using the same container A all the way through the process. so in the beginning we want to fill it with n real numbers. after the FFT it is going to be holding n 2 complex numbers. we then throw that into the inverse transform and hopefully get out our original..
How do I export UIImage array as a movie? http://stackoverflow.com/questions/3741323/how-do-i-export-uiimage-array-as-a-movie sampleBuffer 4 Finish the session writerInput markAsFinished videoWriter endSessionAtSourceTime 因 videoWriter finishWriting You 耱l still have to fill in a lot of blanks but I think that the only really hard remaining part is getting a pixel buffer from a CGImage CVPixelBufferRef newPixelBufferFromCGImage CGImageRef..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell CustomCellBackgroundViewPositionSingle CustomCellBackgroundViewPosition @interface CustomCellBackgroundView UIView UIColor borderColor UIColor fillColor CustomCellBackgroundViewPosition position @property nonatomic retain UIColor borderColor fillColor @property nonatomic CustomCellBackgroundViewPosition position.. CustomCellBackgroundView UIView UIColor borderColor UIColor fillColor CustomCellBackgroundViewPosition position @property nonatomic retain UIColor borderColor fillColor @property nonatomic CustomCellBackgroundViewPosition position @end CustomCellBackgroundView.m Created by Mike Akers on 11 21 08. Copyright 2008 __MyCompanyName__... void addRoundedRectToPath CGContextRef context CGRect rect float ovalWidth float ovalHeight @implementation CustomCellBackgroundView @synthesize borderColor fillColor position BOOL isOpaque return NO id initWithFrame CGRect frame if self super initWithFrame frame Initialization code return self void drawRect CGRect rect..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file your PDF you might consider using Interface Builder to create a view that serves as a template for your PDF output. You would then write code to load the view fill in any data e.g. set text for UILabels etc. then render the individual elements of the view into the PDF. In other words use IB to specify coordinates fonts images.. NSBundle mainBundle loadNibNamed @ ReportTemplate owner self options nil for id view in nib if view isKindOfClass UIView class return view return nil I then fill in various elements. I used tags to find the appropriate elements but you could do this other ways. Example UILabel label UILabel templateView viewWithTag TAG_FIRST_NAME..
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 CGContextAddPath context path CGContextEOFillPath context Release the paths CGPathRelease.. context Release the paths CGPathRelease path CGPathRelease visiblePath So essentially there are the following steps Create your path Set the fill color you want add this path to the context and fill the context Now create a larger rectangle that can bound the visible path. Before closing this path add the.. path CGPathRelease visiblePath So essentially there are the following steps Create your path Set the fill color you want add this path to the context and fill the context Now create a larger rectangle that can bound the visible path. Before closing this path add the visible path. Then close the path so that you create..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app Answer I figured this out after some heavy API research. Below is a method that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used HTTP Client to check what I was doing. void sendPayPalRequestPOST perfomingSetMobileCheckout YES recordResults..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage the above code only uses CG functions you're all set. I also have a similar function to resize and do proper aspect fill on images let me know if that's what you're looking for. Note I got the original function from this post and did some modifications..
How do I add a gradient to the text of a UILabel, but not the background? http://stackoverflow.com/questions/1266179/how-do-i-add-a-gradient-to-the-text-of-a-uilabel-but-not-the-background do I add a gradient to the text of a UILabel but not the background hey I want to be able to have a gradient fill on the text in a UILabel I know about CGGradient but i dont know how i would use it on a UILabel's text i found this on.. drawn text with the clipping path clips the area to draw to the text and then draws a gradient. The gradient will only fill the text not the background. I tried using NSString's drawAtPoint method for this which does support Unicode but all the..
How do I synthesize sounds with CoreAudio on iPhone/Mac http://stackoverflow.com/questions/1361148/how-do-i-synthesize-sounds-with-coreaudio-on-iphone-mac core audio share improve this question What you want to do it probably to setup an AudioQueue. It allows you to fill a buffer with synthesized audio data in a callback. You would setup the AudeioQueue to run in a new thread as such #define.. NULL CFRunLoopGetCurrent kCFRunLoopCommonModes 0 audioQueue Allocate buffers for the AudioQueue and pre fill them. for int i 0 i BUFFER_COUNT i AudioQueueBufferRef mBuffer err AudioQueueAllocateBuffer audioQueue BUFFER_SIZE mBuffer..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework thing to understand. We are using the same container A all the way through the process. so in the beginning we want to fill it with n real numbers. after the FFT it is going to be holding n 2 complex numbers. we then throw that into the inverse..
How do I export UIImage array as a movie? http://stackoverflow.com/questions/3741323/how-do-i-export-uiimage-array-as-a-movie session writerInput markAsFinished videoWriter endSessionAtSourceTime 因 videoWriter finishWriting You 耱l still have to fill in a lot of blanks but I think that the only really hard remaining part is getting a pixel buffer from a CGImage CVPixelBufferRef..
How do I open the Settings application from my application? http://stackoverflow.com/questions/377102/how-do-i-open-the-settings-application-from-my-application need to change those settings in the future. Unfortunately that means maintaining some minimal UI for your user to fill in their settings during that first launch but it seems better from a UX perspective to me than denying the user the joy..
iPhone - Draw transparent rectangle on UIView to reveal view beneath http://stackoverflow.com/questions/3800278/iphone-draw-transparent-rectangle-on-uiview-to-reveal-view-beneath Subclass of to UIView . In HoleyView drawRect would look something like this void drawRect CGRect rect Start by filling the area with the blue color UIColor blueColor setFill UIRectFill rect Assume that there's an ivar somewhere called holeRect.. blueColor setFill UIRectFill rect Assume that there's an ivar somewhere called holeRect of type CGRect We could just fill holeRect but it's more efficient to only fill the area we're being asked to draw. CGRect holeRectIntersection CGRectIntersection.. there's an ivar somewhere called holeRect of type CGRect We could just fill holeRect but it's more efficient to only fill the area we're being asked to draw. CGRect holeRectIntersection CGRectIntersection holeRect rect UIColor clearColor setFill..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell CustomCellBackgroundViewPosition @interface CustomCellBackgroundView UIView UIColor borderColor UIColor fillColor CustomCellBackgroundViewPosition position @property nonatomic retain UIColor borderColor fillColor @property nonatomic.. borderColor UIColor fillColor CustomCellBackgroundViewPosition position @property nonatomic retain UIColor borderColor fillColor @property nonatomic CustomCellBackgroundViewPosition position @end CustomCellBackgroundView.m Created by Mike Akers.. CGRect rect float ovalWidth float ovalHeight @implementation CustomCellBackgroundView @synthesize borderColor fillColor position BOOL isOpaque return NO id initWithFrame CGRect frame if self super initWithFrame frame Initialization code..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone You could also use a graphic image one pixel wide as the gradient and set the view property to expand the graphic to fill the view assuming you are thinking of a simple linear gradient and not some kind of radial graphic . share improve this..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file Builder to create a view that serves as a template for your PDF output. You would then write code to load the view fill in any data e.g. set text for UILabels etc. then render the individual elements of the view into the PDF. In other words.. owner self options nil for id view in nib if view isKindOfClass UIView class return view return nil I then fill in various elements. I used tags to find the appropriate elements but you could do this other ways. Example UILabel label..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer 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.. CGPathRelease path CGPathRelease visiblePath So essentially there are the following steps Create your path Set the fill color you want add this path to the context and fill the context Now create a larger rectangle that can bound the visible.. there are the following steps Create your path Set the fill color you want add this path to the context and fill the context Now create a larger rectangle that can bound the visible path. Before closing this path add the visible path...
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app heavy API research. Below is a method that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used HTTP Client to check what I was doing. void sendPayPalRequestPOST perfomingSetMobileCheckout..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons
can a particular rect of UIview have different alpha..? http://stackoverflow.com/questions/11792563/can-a-particular-rect-of-uiview-have-different-alpha void drawRect CGRect rect Drawing code CGRect rBounds self.bounds CGContextRef context UIGraphicsGetCurrentContext Fill background with 80 white CGContextSetFillColorWithColor context UIColor whiteColor colorWithAlphaComponent 0.8 CGColor CGContextFillRect.. CGRect rBounds self.bounds CGContextRef context UIGraphicsGetCurrentContext Fill background with 80 white CGContextSetFillColorWithColor context UIColor whiteColor colorWithAlphaComponent 0.8 CGColor CGContextFillRect context rBounds Draw the.. with 80 white CGContextSetFillColorWithColor context UIColor whiteColor colorWithAlphaComponent 0.8 CGColor CGContextFillRect context rBounds Draw the window 'frame' CGContextSetStrokeColorWithColor context UIColor orangeColor CGColor CGContextSetLineWidth..
Attach a photo to an email from my iPhone application http://stackoverflow.com/questions/12966944/attach-a-photo-to-an-email-from-my-iphone-application myData NSData dataWithContentsOfFile path picker addAttachmentData myData mimeType @ image jpeg fileName @ photo name Fill out the email body text NSString emailBody @ picker setMessageBody emailBody isHTML NO self presentModalViewController picker..
http://stackoverflow.com/questions/1389655/iphone-email-attachment NSData myData NSData dataWithContentsOfFile path picker addAttachmentData myData mimeType @ image png fileName @ rainy Fill out the email body text NSString emailBody @ It is raining picker setMessageBody emailBody isHTML NO self presentModalViewController..
http://stackoverflow.com/questions/1494626/iphone-app-send-email NSData myData NSData dataWithContentsOfFile path picker addAttachmentData myData mimeType @ image png fileName @ rainy Fill out the email body text NSString emailBody @ It is raining in sunny California picker setMessageBody emailBody isHTML NO..
color replacement in image for iphone application http://stackoverflow.com/questions/15082025/color-replacement-in-image-for-iphone-application for replacement I have tried two approaches but could not got working as expected Approach 1 Queue based Flood Fill algorithm for color replacement but with i got below output with terribly slow and wall shadow has not been preserved. Approach..
Smoothing a rounded stroke in Core Graphics http://stackoverflow.com/questions/2181279/smoothing-a-rounded-stroke-in-core-graphics CGPathAddLineToPoint path NULL maxx miny CGPathAddLineToPoint path NULL minx miny CGPathCloseSubpath path Fill and stroke the path CGContextSaveGState c CGContextAddPath c path CGContextClip c CGFloat locations 2 0.0 1.0 CGFloat mycomponents..
Applying a texture to stroke a CGContextStrokePath http://stackoverflow.com/questions/2366571/applying-a-texture-to-stroke-a-cgcontextstrokepath layer . Get the path's bounds. Stroke the path with any non transparent color. Set the blend mode to source in . Fill the bounding rectangle from step 2 with the desired texture pattern. End the transparency layer. share improve this answer..
how to change UITabbar selected color? http://stackoverflow.com/questions/2506290/how-to-change-uitabbar-selected-color c CGRectMake itemImagePosition.x itemImagePosition.y itemImageSize.width itemImageSize.height itemImage CGImage Fill and end the transparency layer CGContextSetFillColorWithColor c cgColor contextRect.size.height contextRect.size.height.. itemImageSize.width itemImageSize.height itemImage CGImage Fill and end the transparency layer CGContextSetFillColorWithColor c cgColor contextRect.size.height contextRect.size.height CGContextFillRect c contextRect CGContextEndTransparencyLayer.. layer CGContextSetFillColorWithColor c cgColor contextRect.size.height contextRect.size.height CGContextFillRect c contextRect CGContextEndTransparencyLayer c Set selected image and end context item setSelectedImage UIGraphicsGetImageFromCurrentImageContext..
http://stackoverflow.com/questions/3988432/two-modalviewcontroller self NSString subject NSString stringWithFormat @ Group invite for groupname @ @ mhm mailComposer setSubject subject Fill out the email body text NSString emailBody @ This is an group invite bla bla mailComposer setMessageBody emailBody isHTML..
Action sheet doesn't display when the MFMailComposeViewController's cancel button is tapped http://stackoverflow.com/questions/4274895/action-sheet-doesnt-display-when-the-mfmailcomposeviewcontrollers-cancel-butto myData UIImagePNGRepresentation viewImage picker addAttachmentData myData mimeType @ image png fileName @ viewImage Fill out the email body text NSString emailBody @ picker setMessageBody emailBody isHTML NO self presentModalViewController picker..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer NULL bounds.origin.x bounds.origin.y innerRect.origin.x bounds.origin.y radius CGPathCloseSubpath visiblePath Fill this path UIColor aColor UIColor redColor aColor setFill CGContextAddPath context visiblePath CGContextFillPath context.. bounds.origin.y radius CGPathCloseSubpath visiblePath Fill this path UIColor aColor UIColor redColor aColor setFill CGContextAddPath context visiblePath CGContextFillPath context Now create a larger rectangle which we're going to subtract.. Fill this path UIColor aColor UIColor redColor aColor setFill CGContextAddPath context visiblePath CGContextFillPath context Now create a larger rectangle which we're going to subtract the visible path from and apply a shadow CGMutablePathRef..
http://stackoverflow.com/questions/603907/uiimage-resize-then-crop from the iPhone's camera or library scale it down to a specified height using a function equivalent to the Aspect Fill option of UIImageView entirely in code and then crop off anything that did not fit within a passed CGRect. Getting the original..
How to resize UITextView on iOS when a keyboard appears? http://stackoverflow.com/questions/7169702/how-to-resize-uitextview-on-ios-when-a-keyboard-appears UITextView on iOS when a keyboard appears There's UITextView inserted into tab in UITabBarController on the iPhone . Fill UITextView with a lot of lines. Show a keyboard to edit text. What's happen The keyboard hide a half of UITextView with..
How to draw an oval speech bubble programmatically on iPhone? http://stackoverflow.com/questions/7509348/how-to-draw-an-oval-speech-bubble-programmatically-on-iphone core graphics share improve this question I would do it in two iterations. First get the context and begin a path. Fill an ellipse and then a custom path that encloses a triangle with three lines. I assumed the following dimensions 70 width.. in a subclassed UIViewController void drawRect CGRect rect CGContextRef ctx UIGraphicsGetCurrentContext CGContextSetRGBFillColor ctx 0.0 0.0 1.0 1.0 CGContextFillEllipseInRect ctx CGRectMake 0.0 0.0 70.0 50.0 oval shape CGContextBeginPath ctx CGContextMoveToPoint.. CGRect rect CGContextRef ctx UIGraphicsGetCurrentContext CGContextSetRGBFillColor ctx 0.0 0.0 1.0 1.0 CGContextFillEllipseInRect ctx CGRectMake 0.0 0.0 70.0 50.0 oval shape CGContextBeginPath ctx CGContextMoveToPoint ctx 8.0 40.0 CGContextAddLineToPoint..
Draw glow around inside edge of multiple CGPaths http://stackoverflow.com/questions/8480401/draw-glow-around-inside-edge-of-multiple-cgpaths You can draw a pretty decent inner glow without actually computing the union of the paths. Instead make a bitmap. Fill each path on the bitmap. You'll use this as the mask. Next create an inverted image of the mask that has everything outside.. CGContextTranslateCTM gc bounds.origin.x bounds.origin.y whiteColor has all components 1 including alpha. CGContextSetFillColorWithColor gc UIColor whiteColor .CGColor Fill each path into the mask. for UIBezierPath path in paths CGContextBeginPath.. whiteColor has all components 1 including alpha. CGContextSetFillColorWithColor gc UIColor whiteColor .CGColor Fill each path into the mask. for UIBezierPath path in paths CGContextBeginPath gc CGContextAddPath gc path.CGPath CGContextFillPath..
Can anybody help me in recording iPhone output sound through Audio Unit http://stackoverflow.com/questions/8615358/can-anybody-help-me-in-recording-iphone-output-sound-through-audio-unit ioData NSLog @ callback if ioActionFlags kAudioUnitRenderAction_PostRender inBusNumber 0 AudioBufferList bufferList Fill this up with buffers you will want to malloc it as it's a dynamic length list EffectState effectState EffectState inRefCon..
What is code for upload the NSMutableArray data to TableView? [closed] http://stackoverflow.com/questions/9493280/what-is-code-for-upload-the-nsmutablearray-data-to-tableview if cell nil cell UITableViewCell alloc initWithStyle UITableViewCellStyleDefault reuseIdentifier CellIdentifier Fill the cells... cell.textLabel.text yourMutableArray objectAtIndex indexPath.row yourMutableArray is Array return cell I Hope..
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