¡@
2014/10/15 ¤U¤È 10:04:38
iphone Programming Glossary: blueHow would I tint an image programatically on the iPhone? http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone view controller self.lena setImage UIImage imageNamed kImageName self.lena setOverlayColor UIColor blueColor super viewDidLoad I see the image but it is not being tinted. I also tried loading other images.. CGContextSetFillColor context CGColorGetComponents UIColor colorWithRed 0.5 green 0.5 blue 0 alpha 1 .CGColor don't make color too saturated CGContextFillRect context rect draw base UIImage imageNamed..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale original colors float red rawData byteIndex 255.f float green rawData byteIndex 1 255.f float blue rawData byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor.. 1 255.f float blue rawData byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor blue averageColor Assigning new color components rawData byteIndex.. Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor blue averageColor Assigning new color components rawData byteIndex unsigned char red 255 rawData byteIndex..
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 The pixel struct with alpha in this version typedef struct RGBAPixel byte red byte green byte blue byte alpha RGBAPixel Bitmap function returns pre calculated RGBA divide RGB by A to get unmodified RGB.. RGB RGBAPixel bitmap NSLog @ Returning bitmap representation of UIImage. 8 bits each of red green blue and alpha. self setBytesPerRow self.size.width RGBA self setByteCount bytesPerRow self.size.height self.. 2. I declared a struct to correspond to a pixel typedef struct RGBPixel byte red byte green byte blue RGBPixel Step 3. I subclassed UIImageView and declared with corresponding synthesized properties Reference..
How do I change the Navigation Bar color in iOS 7? http://stackoverflow.com/questions/18929864/how-do-i-change-the-navigation-bar-color-in-ios-7 embedded in a nav bar atop a view controller . All I want is to change the nav bar color to light blue along with the utility bar at the top. I can't seem to find an option in my storyboard . iphone ios..
UISegmentedControl selected segment color http://stackoverflow.com/questions/2270526/uisegmentedcontrol-selected-segment-color objectAtIndex i isSelected UIColor tintcolor UIColor colorWithRed 127.0 255.0 green 161.0 255.0 blue 183.0 255.0 alpha 1.0 sender.subviews objectAtIndex i setTintColor tintcolor else sender.subviews objectAtIndex..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer context Now setup the shadow 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..
http://stackoverflow.com/questions/675433/custom-colors-in-uitabbar and background images in a UITabBar I realize that Apple would like everyone to use the same blue and gray tab bars but is there any way to customize this Second even I were to create my own TabBar.. alloc initWithFrame frame v setBackgroundColor UIColor alloc initWithRed 1.0 green 0.0 blue 0.0 alpha 0.1 tabBar1 insertSubview v atIndex 0 v release @end And in your Nib file replace the class..
View Controllers: How to switch between views programmatically? http://stackoverflow.com/questions/910994/view-controllers-how-to-switch-between-views-programmatically Controllers pretty much the same way. ViewControllerA and ViewControllerB. ViewControllerA has a blue background ViewControllerB has a black background. Just to see which one is active. So in the implementation.. YellowViewController @interface SwitchViewController UIViewController IBOutlet BlueViewController blueViewController IBOutlet YellowViewController yellowViewController IBAction switchViews id sender @property.. yellowViewController IBAction switchViews id sender @property nonatomic retain BlueViewController blueViewController @property nonatomic retain YellowViewController yellowViewController @end 1. remove yellow..
How would I tint an image programatically on the iPhone? http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone the code Ramin suggested. I put this in viewDidLoad of my view controller self.lena setImage UIImage imageNamed kImageName self.lena setOverlayColor UIColor blueColor super viewDidLoad I see the image but it is not being tinted. I also tried loading other images setting the image in IB and calling setNeedsDisplay in my view.. drawRect CGRect rect CGContextRef context UIGraphicsGetCurrentContext CGContextSetFillColor context CGColorGetComponents UIColor colorWithRed 0.5 green 0.5 blue 0 alpha 1 .CGColor don't make color too saturated CGContextFillRect context rect draw base UIImage imageNamed @ someImage.png drawInRect rect blendMode kCGBlendModeOverlay..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale bytesPerRow yCoordinate xCoordinate bytesPerPixel Getting original colors float red rawData byteIndex 255.f float green rawData byteIndex 1 255.f float blue rawData byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor blue averageColor Assigning new color.. red rawData byteIndex 255.f float green rawData byteIndex 1 255.f float blue rawData byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor blue averageColor Assigning new color components rawData byteIndex unsigned char red 255 rawData byteIndex 1 unsigned char.. byteIndex 1 255.f float blue rawData byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor blue averageColor Assigning new color components rawData byteIndex unsigned char red 255 rawData byteIndex 1 unsigned char green 255 rawData byteIndex 2 unsigned char..
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 to an array of RGBA bytes in memory RPVW_RGBAPixel pixelData The pixel struct with alpha in this version typedef struct RGBAPixel byte red byte green byte blue byte alpha RGBAPixel Bitmap function returns pre calculated RGBA divide RGB by A to get unmodified RGB RGBAPixel bitmap NSLog @ Returning bitmap representation.. pre calculated RGBA divide RGB by A to get unmodified RGB RGBAPixel bitmap NSLog @ Returning bitmap representation of UIImage. 8 bits each of red green blue and alpha. self setBytesPerRow self.size.width RGBA self setByteCount bytesPerRow self.size.height self setPixelCount self.size.width self.size.height Create RGB.. 1. I declared a type for byte typedef unsigned char byte Step 2. I declared a struct to correspond to a pixel typedef struct RGBPixel byte red byte green byte blue RGBPixel Step 3. I subclassed UIImageView and declared with corresponding synthesized properties Reference to Quartz CGImage for receiver self CFDataRef bitmapData..
How do I change the Navigation Bar color in iOS 7? http://stackoverflow.com/questions/18929864/how-do-i-change-the-navigation-bar-color-in-ios-7 the Twitter Nav Bar updated Twitter for iOS7 that is . I embedded in a nav bar atop a view controller . All I want is to change the nav bar color to light blue along with the utility bar at the top. I can't seem to find an option in my storyboard . iphone ios xcode ipad apple share improve this question The behavior..
UISegmentedControl selected segment color http://stackoverflow.com/questions/2270526/uisegmentedcontrol-selected-segment-color for int i 0 i sender.subviews count i if sender.subviews objectAtIndex i isSelected UIColor tintcolor UIColor colorWithRed 127.0 255.0 green 161.0 255.0 blue 183.0 255.0 alpha 1.0 sender.subviews objectAtIndex i setTintColor tintcolor else sender.subviews objectAtIndex i setTintColor nil Check its Working For Me share..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer context CGContextAddPath context visiblePath CGContextClip context Now setup the shadow 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..
http://stackoverflow.com/questions/675433/custom-colors-in-uitabbar colors in UITabBar Is it possible to use custom colors and background images in a UITabBar I realize that Apple would like everyone to use the same blue and gray tab bars but is there any way to customize this Second even I were to create my own TabBar like view controller along with custom images would this violate.. CGRectMake 0.0 0 self.view.bounds.size.width 48 UIView v UIView alloc initWithFrame frame v setBackgroundColor UIColor alloc initWithRed 1.0 green 0.0 blue 0.0 alpha 0.1 tabBar1 insertSubview v atIndex 0 v release @end And in your Nib file replace the class of your TabBar Controller with CustomUITabBarController...
View Controllers: How to switch between views programmatically? http://stackoverflow.com/questions/910994/view-controllers-how-to-switch-between-views-programmatically see it fullscreen. Works fine. Then I created two other View Controllers pretty much the same way. ViewControllerA and ViewControllerB. ViewControllerA has a blue background ViewControllerB has a black background. Just to see which one is active. So in the implementation of myRootController I do this Implement viewDidLoad.. #import @class BlueViewController @class YellowViewController @interface SwitchViewController UIViewController IBOutlet BlueViewController blueViewController IBOutlet YellowViewController yellowViewController IBAction switchViews id sender @property nonatomic retain BlueViewController blueViewController.. blueViewController IBOutlet YellowViewController yellowViewController IBAction switchViews id sender @property nonatomic retain BlueViewController blueViewController @property nonatomic retain YellowViewController yellowViewController @end 1. remove yellow view and insert blue view IBAction switchViews id sender..
How would I tint an image programatically on the iPhone? http://stackoverflow.com/questions/1117211/how-would-i-tint-an-image-programatically-on-the-iphone viewDidLoad of my view controller self.lena setImage UIImage imageNamed kImageName self.lena setOverlayColor UIColor blueColor super viewDidLoad I see the image but it is not being tinted. I also tried loading other images setting the image in.. UIGraphicsGetCurrentContext CGContextSetFillColor context CGColorGetComponents UIColor colorWithRed 0.5 green 0.5 blue 0 alpha 1 .CGColor don't make color too saturated CGContextFillRect context rect draw base UIImage imageNamed @ someImage.png..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale bytesPerPixel Getting original colors float red rawData byteIndex 255.f float green rawData byteIndex 1 255.f float blue rawData byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor.. rawData byteIndex 1 255.f float blue rawData byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor blue averageColor Assigning new color components rawData byteIndex unsigned char.. byteIndex 2 255.f Processing pixel data float averageColor red green blue 3.0f red averageColor green averageColor blue averageColor Assigning new color components rawData byteIndex unsigned char red 255 rawData byteIndex 1 unsigned char green..
Preventing a UITabBar from applying a gradient to its icon images http://stackoverflow.com/questions/1355480/preventing-a-uitabbar-from-applying-a-gradient-to-its-icon-images UIImage imageNamed @ tab_bar_bg.png optionally set the tint color setting this ti nil will result in the standard blue tint color. tint color is ignored when custom icons are set as above. tabBarController.tabBar.selectedImageTintColor nil..
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 RPVW_RGBAPixel pixelData The pixel struct with alpha in this version typedef struct RGBAPixel byte red byte green byte blue byte alpha RGBAPixel Bitmap function returns pre calculated RGBA divide RGB by A to get unmodified RGB RGBAPixel bitmap.. A to get unmodified RGB RGBAPixel bitmap NSLog @ Returning bitmap representation of UIImage. 8 bits each of red green blue and alpha. self setBytesPerRow self.size.width RGBA self setByteCount bytesPerRow self.size.height self setPixelCount self.size.width.. char byte Step 2. I declared a struct to correspond to a pixel typedef struct RGBPixel byte red byte green byte blue RGBPixel Step 3. I subclassed UIImageView and declared with corresponding synthesized properties Reference to Quartz CGImage..
How can I create a UIColor from a hex string? http://stackoverflow.com/questions/1560081/how-can-i-create-a-uicolor-from-a-hex-string
How do I change the Navigation Bar color in iOS 7? http://stackoverflow.com/questions/18929864/how-do-i-change-the-navigation-bar-color-in-ios-7 for iOS7 that is . I embedded in a nav bar atop a view controller . All I want is to change the nav bar color to light blue along with the utility bar at the top. I can't seem to find an option in my storyboard . iphone ios xcode ipad apple ..
iPhone UITableView - Delete Button http://stackoverflow.com/questions/2104403/iphone-uitableview-delete-button UIColor clearColor topLabel.textColor fontColor topLabel.highlightedTextColor UIColor colorWithRed 1.0 green 1.0 blue 0.9 alpha 1.0 topLabel.font UIFont systemFontOfSize UIFont labelFontSize Create the label for the top row of text bottomLabel.. UIColor clearColor bottomLabel.textColor fontColor bottomLabel.highlightedTextColor UIColor colorWithRed 1.0 green 1.0 blue 0.9 alpha 1.0 bottomLabel.font UIFont systemFontOfSize UIFont labelFontSize 2 Create a background image view. cell.backgroundView..
UISegmentedControl selected segment color http://stackoverflow.com/questions/2270526/uisegmentedcontrol-selected-segment-color i if sender.subviews objectAtIndex i isSelected UIColor tintcolor UIColor colorWithRed 127.0 255.0 green 161.0 255.0 blue 183.0 255.0 alpha 1.0 sender.subviews objectAtIndex i setTintColor tintcolor else sender.subviews objectAtIndex i setTintColor..
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer CGContextClip context Now setup the shadow 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..
http://stackoverflow.com/questions/675433/custom-colors-in-uitabbar to use custom colors and background images in a UITabBar I realize that Apple would like everyone to use the same blue and gray tab bars but is there any way to customize this Second even I were to create my own TabBar like view controller.. 48 UIView v UIView alloc initWithFrame frame v setBackgroundColor UIColor alloc initWithRed 1.0 green 0.0 blue 0.0 alpha 0.1 tabBar1 insertSubview v atIndex 0 v release @end And in your Nib file replace the class of your TabBar..
View Controllers: How to switch between views programmatically? http://stackoverflow.com/questions/910994/view-controllers-how-to-switch-between-views-programmatically two other View Controllers pretty much the same way. ViewControllerA and ViewControllerB. ViewControllerA has a blue background ViewControllerB has a black background. Just to see which one is active. So in the implementation of myRootController.. @class YellowViewController @interface SwitchViewController UIViewController IBOutlet BlueViewController blueViewController IBOutlet YellowViewController yellowViewController IBAction switchViews id sender @property nonatomic retain.. YellowViewController yellowViewController IBAction switchViews id sender @property nonatomic retain BlueViewController blueViewController @property nonatomic retain YellowViewController yellowViewController @end 1. remove yellow view and insert..
iOS - color on xcode simulator is different from the color on device http://stackoverflow.com/questions/10039641/ios-color-on-xcode-simulator-is-different-from-the-color-on-device i added the following RGB values to get the color I wanted it is only rough and worked for me Red 12 Green 19 Blue 16 Different angles best to keep it horizontal Holding the phone in different angles also gives different shades keeping..
Custom MKAnnotationView with frame,icon and image http://stackoverflow.com/questions/10520274/custom-mkannotationview-with-frame-icon-and-image image named F.png the F.png is a frame image as showed in the picture. what i want is to add an inner image. colored Blue in the picture i draw MKAnnotationView mapView MKMapView theMapView viewForAnnotation id MKAnnotation annotation if annotation..
How to NSLog pixel RGB from a UIImage? http://stackoverflow.com/questions/1352989/how-to-nslog-pixel-rgb-from-a-uiimage NSLog @ Alpha 255 Value is u data i NSLog @ Red 255 Value is u data i 1 NSLog @ Green 255 Value is u data i 2 NSLog @ Blue 255 Value is u data i 3 CREATE NEW UIIMAGE newImage HERE return newImage iphone uikit bitmap uiimage pixel share improve.. UInt32 pixels CGBitmapContextGetData ctx #define getRed p p 0x000000FF #define getGreen p p 0x0000FF00 8 #define getBlue p p 0x00FF0000 16 display RGB values from the 11th pixel NSLog @ Red d Green d Blue d getRed pixels 10 getGreen pixels 10..
Dynamically insert more UITextFields http://stackoverflow.com/questions/15539690/dynamically-insert-more-uitextfields When blue add button is clicked one more UItextfield have to be inserted between last text field and textview and Blue add button will have to appear beside that dynamically inserted new uitextfield. Could any one suggest how to achieve this...
Applying background gradient to a Grouple table cell http://stackoverflow.com/questions/1979165/applying-background-gradient-to-a-grouple-table-cell size_t num_locations 2 CGFloat locations 2 0.0 1.0 CGFloat components 8 0.8f 0.8f 0.8f 1.0f Bottom Colour Red Green Blue Alpha. 0.9f 0.9f 0.9f 1.0 Top Colour Red Green Blue Alpha. myColorspace CGColorSpaceCreateDeviceRGB myGradient CGGradientCreateWithColorComponents.. CGFloat components 8 0.8f 0.8f 0.8f 1.0f Bottom Colour Red Green Blue Alpha. 0.9f 0.9f 0.9f 1.0 Top Colour Red Green Blue Alpha. myColorspace CGColorSpaceCreateDeviceRGB myGradient CGGradientCreateWithColorComponents myColorspace components ..
Check if UIColor is dark or bright? http://stackoverflow.com/questions/2509443/check-if-uicolor-is-dark-or-bright
How do I set UITableViewCellSelectionStyle property to some custom color? http://stackoverflow.com/questions/260523/how-do-i-set-uitableviewcellselectionstyle-property-to-some-custom-color Style I read the UITableViewCell Class Reference but there are only three constants defined for Selection style Blue Gray None . I saw one application that used a different color than those defined in the reference. How can we use a color..
Twitter-esque UITabBarController? http://stackoverflow.com/questions/3664208/twitter-esque-uitabbarcontroller to make an app that uses a UITabBarController that is similar to the one in the Twitter app for iPhone and iPod touch. Blue light for unread and sliding arrow for switching between content views . Is there an easy way to do this Any open source..
how to determine load application on iphone at first time? http://stackoverflow.com/questions/4153487/how-to-determine-load-application-on-iphone-at-first-time been launched launchCount if launchCount 1 NSLog @ this is the FIRST LAUNCH of the app do stuff here as you wish bbb Blue alloc init window addSubview bbb.view if launchCount 2 NSLog @ this is the SECOND launch of the damn app do stuff here.. do stuff here as you wish rrr Red alloc init window addSubview rrr.view window makeKeyAndVisible return YES here Red Blue are subclasses of uiviewcontroller in both classes only one difference is that in void viewDidLoad self.view.backgroundcolor..
What do the colors and percentages mean in the Leaks Instrument? http://stackoverflow.com/questions/4283296/what-do-the-colors-and-percentages-mean-in-the-leaks-instrument ever created. As the ratio of net allocations to overall allocations shrinks the color of the histogrambar changes. Blue histogrambars represent a reasonable ratio while colors shifted towards the red spectrum represent lower ratios that might..
Text Color to Match Default UIButton Color [Blue] http://stackoverflow.com/questions/5374341/text-color-to-match-default-uibutton-color-blue Color to Match Default UIButton Color Blue The default UIButton round rectangle is that dark blue. I want my cell's text in a table to match this blue color. I am..
Change from RGB to HSB on iPhone? http://stackoverflow.com/questions/5589804/change-from-rgb-to-hsb-on-iphone i 1 i 3 i if array i array max max i if array i array min min i HSBColor colorWithRed float red Green float green Blue float blue HSBColor toReturn HSBColor alloc init autorelease float colorArray 3 colorArray 0 red colorArray 1 green colorArray.. min 60 360 else if max 1 Green toReturn.hue 2.0 colorArray 2 colorArray 0 colorArray max colorArray min 60 360 else Blue toReturn.hue 4.0 colorArray 0 colorArray 1 colorArray max colorArray min 60 360 return toReturn HSBColor colorWithSystemColor..
How to render SVG images in iphone without uiwebview? http://stackoverflow.com/questions/6610419/how-to-render-svg-images-in-iphone-without-uiwebview iphone image uiimageview svg share improve this question Jason Morrissey author of the extremely excellent Alien Blue app the best iOS Reddit client on the store can you tell I'm a fan I'm also a beta tester. recently put up his SVGKit framework..
Objective-C: Asynchronously populate UITableView - how to do this? http://stackoverflow.com/questions/7491517/objective-c-asynchronously-populate-uitableview-how-to-do-this code of what I'm trying to do I'm using ASIHttpRequest . self.listData NSArray alloc initWithObjects @ Red @ Green @ Blue @ Indigo @ Violet nil this works NSString urlStr NSString alloc initWithFormat @ http www.google.com some slow request NSURL.. url request setDelegate self request setCompletionBlock ^ self.listData NSArray alloc initWithObjects @ Red @ Green @ Blue @ Indigo @ Violet nil this doesn't work... table reloadData request setFailedBlock ^ request startAsynchronous The dummy..
Draw a straight line using OpenGL ES in iPhone? http://stackoverflow.com/questions/9736887/draw-a-straight-line-using-opengl-es-in-iphone GL_TRUE Make the line a cyan color self.effect.constantColor GLKVector4Make 0.0f Red 1.0f Green 1.0f Blue 1.0f Alpha I was able to get the line to draw by including a few more steps. It all involves sending data over to the GPU..
|