2014/10/15 下午 10:13:00

iphone Programming Glossary: pt

How do I make UILabel display outlined text?

http://stackoverflow.com/questions/1103148/how-do-i-make-uilabel-display-outlined-text

I clumsily cobbled together from a few tangentially related online examples. And it works but it's very very slow except on the simulator and I couldn't get it to center the text vertically either so I hard coded the y value on the last line.. const char str CGContextSetTextDrawingMode gc kCGTextInvisible CGContextShowTextAtPoint gc 0 0 str strlen str CGPoint pt CGContextGetTextPosition gc CGContextSetTextDrawingMode gc kCGTextFillStroke CGContextShowTextAtPoint gc x pt.x 2 y str.. CGPoint pt CGContextGetTextPosition gc CGContextSetTextDrawingMode gc kCGTextFillStroke CGContextShowTextAtPoint gc x pt.x 2 y str strlen str void drawRect CGRect rect CGContextRef theContext UIGraphicsGetCurrentContext CGRect viewBounds self.bounds..

Can I edit the pixels of the UIImage's property CGImage

http://stackoverflow.com/questions/1281210/can-i-edit-the-pixels-of-the-uiimages-property-cgimage

char CGBitmapContextGetData mContext void postProcess CGContextRelease m_Context free m_Bits UIImage doProcess CGPoint pt just a example unsigned char ppxl m_Bits ... do something... CGImageRef imRef CGBitmapContextCreateImage mContext return..

UIImage detecting touch and dragging

http://stackoverflow.com/questions/1991899/uiimage-detecting-touch-and-dragging

@implementation Draggable void touchesBegan NSSet touches withEvent UIEvent event Retrieve the touch point CGPoint pt touches anyObject locationInView self startLocation pt self superview bringSubviewToFront self void touchesMoved NSSet touches.. withEvent UIEvent event Retrieve the touch point CGPoint pt touches anyObject locationInView self startLocation pt self superview bringSubviewToFront self void touchesMoved NSSet touches withEvent UIEvent event Move relative to the original.. self void touchesMoved NSSet touches withEvent UIEvent event Move relative to the original touch point CGPoint pt touches anyObject locationInView self CGRect frame self frame frame.origin.x pt.x startLocation.x frame.origin.y pt.y startLocation.y..

iPhone:Programming UISlider to position at clicked location

http://stackoverflow.com/questions/2895122/iphoneprogramming-uislider-to-position-at-clicked-location

g UISlider s UISlider g.view if s.highlighted return tap on thumb let slider deal with it CGPoint pt g locationInView s CGFloat percentage pt.x s.bounds.size.width CGFloat delta percentage s.maximumValue s.minimumValue CGFloat.. g.view if s.highlighted return tap on thumb let slider deal with it CGPoint pt g locationInView s CGFloat percentage pt.x s.bounds.size.width CGFloat delta percentage s.maximumValue s.minimumValue CGFloat value s.minimumValue delta s setValue..

Get the coordinates of a point from mkmapview on iphone

http://stackoverflow.com/questions/3080198/get-the-coordinates-of-a-point-from-mkmapview-on-iphone

to get the point using void touchesBegan NSSet touches withEvent UIEvent event for UITouch touch in touches CGPoint pt touch locationInView map CLLocationCoordinate2D coord map convertPoint pt toCoordinateFromView map NSLog NSString stringWithFormat.. event for UITouch touch in touches CGPoint pt touch locationInView map CLLocationCoordinate2D coord map convertPoint pt toCoordinateFromView map NSLog NSString stringWithFormat @ x f y f lat f long f pt.x pt.y coord.latitude coord.longitude.. coord map convertPoint pt toCoordinateFromView map NSLog NSString stringWithFormat @ x f y f lat f long f pt.x pt.y coord.latitude coord.longitude but then the map has some crazy behavior like it will not scroll and it will not zoom..

How do you make an image follow your finger in objective-c? [closed]

http://stackoverflow.com/questions/3445494/how-do-you-make-an-image-follow-your-finger-in-objective-c

a UIImageView Set the position of your Image to be where the user is touching There are four delegate methods for accepting touch events which are a part of any class that inherits from UIResponder such as a UIView . Use the delegate method.. want it to follow your finger this will be touchesMoved void touchesMoved NSSet toucheswithEvent UIEvent event CGPoint pt touches anyObject locationInView self myImageView.center pt Other delegate methods available to you are void touchesBegan.. touchesMoved NSSet toucheswithEvent UIEvent event CGPoint pt touches anyObject locationInView self myImageView.center pt Other delegate methods available to you are void touchesBegan NSSet touches withEvent UIEvent event void touchesCancelled..

Paging UIScrollView with peeking neighbor pages

http://stackoverflow.com/questions/3735218/paging-uiscrollview-with-peeking-neighbor-pages

event. All you need to do is return your scroll view for any points within this backing view UIView hitTest CGPoint pt withEvent UIEvent event if CGRectContainsPoint self.bounds pt return self.scrollView return super hitTest pt withEvent event..

How programatically move a UIScrollView to focus in a control above keyboard?

http://stackoverflow.com/questions/484855/how-programatically-move-a-uiscrollview-to-focus-in-a-control-above-keyboard

CGPoint svos implementation void textFieldDidBeginEditing UITextField textField svos scrollView.contentOffset CGPoint pt CGRect rc textField bounds rc textField convertRect rc toView scrollView pt rc.origin pt.x 0 pt.y 60 scrollView setContentOffset.. svos scrollView.contentOffset CGPoint pt CGRect rc textField bounds rc textField convertRect rc toView scrollView pt rc.origin pt.x 0 pt.y 60 scrollView setContentOffset pt animated YES BOOL textFieldShouldReturn UITextField textField scrollView.. CGPoint pt CGRect rc textField bounds rc textField convertRect rc toView scrollView pt rc.origin pt.x 0 pt.y 60 scrollView setContentOffset pt animated YES BOOL textFieldShouldReturn UITextField textField scrollView setContentOffset..

UIWebView - Enabling Action Sheets on <img> tags

http://stackoverflow.com/questions/5163831/uiwebview-enabling-action-sheets-on-img-tags

ios4 uiwebview share improve this question Yes apple has disabled this feature among others in UIWebViews and kept it for Safari only. However you can recreate this yourself by extending this tutorial http www.icab.de blog 2010 07 11 customize.. the images url they are clicking on but we need to change the void openContextualMenuAtPoint method to provide extra options. Again here's mine I tried to copy Safari's behaviour for this void openContextualMenuAt CGPoint pt Load the JavaScript.. provide extra options. Again here's mine I tried to copy Safari's behaviour for this void openContextualMenuAt CGPoint pt Load the JavaScript code from the Resources and inject it into the web page NSString path NSBundle mainBundle pathForResource..

AVAssetWritter does not work with audio

http://stackoverflow.com/questions/5200077/avassetwritter-does-not-work-with-audio

The video is fine. No audio is recorded to the file My iPhone speaker works. Here's the init setup session AVCaptureSession alloc init menu session session menu_open NO session.sessionPreset AVCaptureSessionPresetMedium camera AVCaptureDevice.. Here's the init setup session AVCaptureSession alloc init menu session session menu_open NO session.sessionPreset AVCaptureSessionPresetMedium camera AVCaptureDevice defaultDeviceWithMediaType AVMediaTypeVideo microphone AVCaptureDevice defaultDeviceWithMediaType.. alloc init menu session session menu_open NO session.sessionPreset AVCaptureSessionPresetMedium camera AVCaptureDevice defaultDeviceWithMediaType AVMediaTypeVideo microphone AVCaptureDevice defaultDeviceWithMediaType AVMediaTypeAudio..

Programmatically detect if app is being run on device or simulator

http://stackoverflow.com/questions/5775420/programmatically-detect-if-app-is-being-run-on-device-or-simulator

detect this Reason being to test bluetooth api with simulator http volcore.limbicsoft.com 2009 09 iphone os 31 gamekit pt 1 woooohooo.html iphone ios simulator detect share improve this question #if TARGET_IPHONE_SIMULATOR Simulator #else..