2014/10/15 下午 10:04:04

iphone Programming Glossary: assign

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

pulled from the Camera also ROTATES the UIimage I am getting UIimages from the camera and assigning them to UIImageViews to be displayed. When I do this the camera gives me a 1200 x 1600 pixel image.. to be displayed. When I do this the camera gives me a 1200 x 1600 pixel image which I then assign to a UIImageView in my Application. The image is displayed as expected in the image view under this.. the image view under this condition. However when I attempt to RESIZE the retrieved UIImage before assigning it to the UIImageView the image is resizing as expected but there IS a problem in that somewhere..

Get to UIViewController from UIView on iPhone?

http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone

MyViewDelegate NSObject void viewActionHappened @end @interface MyView UIView @property nonatomic assign MyViewDelegate delegate @end @interface MyViewController MyViewDelegate @end The view interfaces with..

Observing pinch multi-touch gestures in a UITableView

http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview

like autorotation. id EventInterceptWindowDelegate eventInterceptDelegate @property nonatomic assign id EventInterceptWindowDelegate eventInterceptDelegate @end EventInterceptWindow.m #import EventInterceptWindow.h..

Prefixing property names with an underscore in Objective C [duplicate]

http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c

Objective C 2.0 practice is to use the same name for the ivar as the property. You can optionally assign a different ivar in the @property declaration but the fact that by default synthesized accessors for..

iphone, dismiss keyboard when touching outside of textfield

http://stackoverflow.com/questions/5306240/iphone-dismiss-keyboard-when-touching-outside-of-textfield

touch ios uikit share improve this question You'll need to add an UITapGestureRecogniser and assign it to the view and then call resign first responder on the textfield on it's selector. The code In viewDidLoad..

how to display test IAd banner in the simulator

http://stackoverflow.com/questions/5947552/how-to-display-test-iad-banner-in-the-simulator

ADBannerViewDelegate BOOL isBannerVisible IBOutlet ADBannerView banner @property nonatomic assign BOOL isBannerVisible @property nonatomic retain IBOutlet ADBannerView banner @end .m file i implemented..

Property vs instance variable in Objective-C [duplicate]

http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c

dismissModalViewController AND pass data back

http://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back

@end @interface SecondViewController UIViewController id myDelegate @property nonatomic assign id SecondDelegate myDelegate Dont forget to synthesize the myDelegate in your .m file @synthesize myDelegate..

How do I create delegates in Objective-C?

http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c

delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that.. NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the.. windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that..

iCloud basics and code sample [closed]

http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample

documentText id delegate @property nonatomic retain NSString documentText @property nonatomic assign id delegate @end MyTextDocument.m iCloudText #import MyTextDocument.h #import ViewController.h @implementation..

Customize the MKAnnotationView callout

http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout

Annotation object. #import MapKit MapKit.h @interface Content NSObject @property nonatomic assign CLLocationCoordinate2D coordinate ... @interface Annotation NSObject MKAnnotation AnnotationProtocol..

Call a parent view controller (through a navigationcontroller)

http://stackoverflow.com/questions/8055052/call-a-parent-view-controller-through-a-navigationcontroller

void parentMethodThatChildCanCall @end @interface ChildViewController UIViewController @property assign id ChildViewControllerDelegate delegate In your child view controller .m file @implementation ChildViewController..

Objective-C ARC: strong vs retain and weak vs assign

http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign

C ARC strong vs retain and weak vs assign There are two new memory management attributes for properties introduced by ARC strong and weak . Apart.. something completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign.. vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means the program will crash when I send a message to the..

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

UIimages pulled from the Camera also ROTATES the UIimage I am getting UIimages from the camera and assigning them to UIImageViews to be displayed. When I do this the camera gives me a 1200 x 1600 pixel image which I then assign to a UIImageView in my Application. The.. getting UIimages from the camera and assigning them to UIImageViews to be displayed. When I do this the camera gives me a 1200 x 1600 pixel image which I then assign to a UIImageView in my Application. The image is displayed as expected in the image view under this condition. However when I attempt to RESIZE the retrieved UIImage.. in my Application. The image is displayed as expected in the image view under this condition. However when I attempt to RESIZE the retrieved UIImage before assigning it to the UIImageView the image is resizing as expected but there IS a problem in that somewhere in the RESIZING code my UIImage is getting ROTATED... As a result..

Get to UIViewController from UIView on iPhone?

http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone

pattern. An example of how to implement it follows @protocol MyViewDelegate NSObject void viewActionHappened @end @interface MyView UIView @property nonatomic assign MyViewDelegate delegate @end @interface MyViewController MyViewDelegate @end The view interfaces with its delegate as UITableView does for instance and it doesn't..

Observing pinch multi-touch gestures in a UITableView

http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview

occlude the same name in a superclass and silently break things like autorotation. id EventInterceptWindowDelegate eventInterceptDelegate @property nonatomic assign id EventInterceptWindowDelegate eventInterceptDelegate @end EventInterceptWindow.m #import EventInterceptWindow.h @implementation EventInterceptWindow @synthesize..

Prefixing property names with an underscore in Objective C [duplicate]

http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c

style share improve this question Current suggested Objective C 2.0 practice is to use the same name for the ivar as the property. You can optionally assign a different ivar in the @property declaration but the fact that by default synthesized accessors for a property will access the ivar with the same name as the property..

iphone, dismiss keyboard when touching outside of textfield

http://stackoverflow.com/questions/5306240/iphone-dismiss-keyboard-when-touching-outside-of-textfield

when the user touches outside of the textfield iphone cocoa touch ios uikit share improve this question You'll need to add an UITapGestureRecogniser and assign it to the view and then call resign first responder on the textfield on it's selector. The code In viewDidLoad UITapGestureRecognizer tap UITapGestureRecognizer..

how to display test IAd banner in the simulator

http://stackoverflow.com/questions/5947552/how-to-display-test-iad-banner-in-the-simulator

#import iAd iAd.h @interface IadTestViewController UIViewController ADBannerViewDelegate BOOL isBannerVisible IBOutlet ADBannerView banner @property nonatomic assign BOOL isBannerVisible @property nonatomic retain IBOutlet ADBannerView banner @end .m file i implemented delegate methods #import IadTestViewController.h @implementation..

Property vs instance variable in Objective-C [duplicate]

http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c

dismissModalViewController AND pass data back

http://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back

NSObject void secondViewControllerDismissed NSString stringForFirst @end @interface SecondViewController UIViewController id myDelegate @property nonatomic assign id SecondDelegate myDelegate Dont forget to synthesize the myDelegate in your .m file @synthesize myDelegate In your firstViewController's header file subscribe..

How do I create delegates in Objective-C?

http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c

them. But how do I create them iphone ios objective c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate methods you're interested in. Though.. create a class like this @implementation MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code similar to this to see.. delegate respondsToSelector @selector windowDidMove self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that object. For example a view controller is often the delegate..

iCloud basics and code sample [closed]

http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample

ViewController.h @interface MyTextDocument UIDocument NSString documentText id delegate @property nonatomic retain NSString documentText @property nonatomic assign id delegate @end MyTextDocument.m iCloudText #import MyTextDocument.h #import ViewController.h @implementation MyTextDocument @synthesize documentText _text @synthesize..

Customize the MKAnnotationView callout

http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout

title photo url etc. Use this class to initialize a MKAnnotation Annotation object. #import MapKit MapKit.h @interface Content NSObject @property nonatomic assign CLLocationCoordinate2D coordinate ... @interface Annotation NSObject MKAnnotation AnnotationProtocol id initWithContent Content content ... The Annotation implements..

Call a parent view controller (through a navigationcontroller)

http://stackoverflow.com/questions/8055052/call-a-parent-view-controller-through-a-navigationcontroller

.h file @protocol ChildViewControllerDelegate NSObject void parentMethodThatChildCanCall @end @interface ChildViewController UIViewController @property assign id ChildViewControllerDelegate delegate In your child view controller .m file @implementation ChildViewController @synthesize delegate to call parent method self.delegate..

Objective-C ARC: strong vs retain and weak vs assign

http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign

C ARC strong vs retain and weak vs assign There are two new memory management attributes for properties introduced by ARC strong and weak . Apart from copy which is obviously something completely different.. by ARC strong and weak . Apart from copy which is obviously something completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means the program will crash when I send a message.. completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means the program will crash when I send a message to the pointer once it's been released. But if I use weak this won't..

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

UIimages pulled from the Camera also ROTATES the UIimage I am getting UIimages from the camera and assigning them to UIImageViews to be displayed. When I do this the camera gives me a 1200 x 1600 pixel image which I then assign.. them to UIImageViews to be displayed. When I do this the camera gives me a 1200 x 1600 pixel image which I then assign to a UIImageView in my Application. The image is displayed as expected in the image view under this condition. However when.. as expected in the image view under this condition. However when I attempt to RESIZE the retrieved UIImage before assigning it to the UIImageView the image is resizing as expected but there IS a problem in that somewhere in the RESIZING code..

Get to UIViewController from UIView on iPhone?

http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone

it follows @protocol MyViewDelegate NSObject void viewActionHappened @end @interface MyView UIView @property nonatomic assign MyViewDelegate delegate @end @interface MyViewController MyViewDelegate @end The view interfaces with its delegate as UITableView..

Prefixing property names with an underscore in Objective C [duplicate]

http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c

Current suggested Objective C 2.0 practice is to use the same name for the ivar as the property. You can optionally assign a different ivar in the @property declaration but the fact that by default synthesized accessors for a property will access..

iphone, dismiss keyboard when touching outside of textfield

http://stackoverflow.com/questions/5306240/iphone-dismiss-keyboard-when-touching-outside-of-textfield

iphone cocoa touch ios uikit share improve this question You'll need to add an UITapGestureRecogniser and assign it to the view and then call resign first responder on the textfield on it's selector. The code In viewDidLoad UITapGestureRecognizer..

Property vs instance variable in Objective-C [duplicate]

http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c

dismissModalViewController AND pass data back

http://stackoverflow.com/questions/6203799/dismissmodalviewcontroller-and-pass-data-back

NSString stringForFirst @end @interface SecondViewController UIViewController id myDelegate @property nonatomic assign id SecondDelegate myDelegate Dont forget to synthesize the myDelegate in your .m file @synthesize myDelegate In your firstViewController's..

How do I create delegates in Objective-C?

http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c

objective c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them you simply define a class that implements the delegate.. MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it.. self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that object. For example..

iCloud basics and code sample [closed]

http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample

UIDocument NSString documentText id delegate @property nonatomic retain NSString documentText @property nonatomic assign id delegate @end MyTextDocument.m iCloudText #import MyTextDocument.h #import ViewController.h @implementation MyTextDocument..

Objective-C ARC: strong vs retain and weak vs assign

http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign

C ARC strong vs retain and weak vs assign There are two new memory management attributes for properties introduced by ARC strong and weak . Apart from copy which.. copy which is obviously something completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means.. between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means the program will crash when I send a message to the pointer once it's..

Put Random UIButtons Title of NSMutableArray to UIButtons of NSMutablearray

http://stackoverflow.com/questions/10596414/put-random-uibuttons-title-of-nsmutablearray-to-uibuttons-of-nsmutablearray

with 3 UIButtons and Second NSMutableArray with 50 UIButtons. I want to take these 3 UIButtons Titles to Assign it Character by Character to each UIButton of SecondArray.but Each of these 50 UIButtons of Second Array already have single.. to UIButton in Second Array. For Exp if my first Button have titles stack second over and Third flow no i want to Assign UIButtons of index 0 5 13 16 35 38 in Second Array .My first Array that have 3 UIBttons .here is code. NSMutableArray buttons..

Deactivate UIScrollView decelerating

http://stackoverflow.com/questions/1105647/deactivate-uiscrollview-decelerating

scrollViewWillBeginDecelerating to automatically set the content offset to the current screen position. To implement Assign a delegate to your UIScrollView object if you have not already done so. In your delegate's .m implementation file add the..

Check Uncheck buttons in uitableview's cell

http://stackoverflow.com/questions/12814060/check-uncheck-buttons-in-uitableviews-cell

Do any additional setup after loading the view typically from a nib. arrayCheckUnchek NSMutableArray alloc init Assign your cell data array cellDataArray NSMutableArray alloc initWithObjects @ cell 1 @ cell 2 @ cell 3 @ cell 4 @ cell 5 nil..

Setting Address Book image for a contact doesn't seem to work

http://stackoverflow.com/questions/2082845/setting-address-book-image-for-a-contact-doesnt-seem-to-work

an ABPeoplePickerNavigationController object because you're not properly initialising the error here CFErrorRef error Assign nil here or it will have a random or more precisely some previous memory value incidentally pointing to an ABPeoplePickerNavigationController..

Saving Geotag info with photo on iOS4.1

http://stackoverflow.com/questions/3884060/saving-geotag-info-with-photo-on-ios4-1

gps setObject NSNumber numberWithFloat location.course forKey NSString kCGImagePropertyGPSTrack return gps Assign the dictionary returned by this method as the value for the kCGImagePropertyGPSDictionary key in the metadata dictionary..

How to draw a color wheel in objective-c

http://stackoverflow.com/questions/5108921/how-to-draw-a-color-wheel-in-objective-c

Creating a combo box for the iPhone

http://stackoverflow.com/questions/533231/creating-a-combo-box-for-the-iphone

this question I don't think this is hard to do. In a view controller you have a UITextField and a UITableView. Assign the view controller to be the delegate of the both controls plus the data source of the table. Implement the UITextField..

How do I set up a simple delegate to communicate between two view controllers?

http://stackoverflow.com/questions/6168919/how-do-i-set-up-a-simple-delegate-to-communicate-between-two-view-controllers

didSelectRowAtIndexPath NSIndexPath indexPath ChildViewController detailViewController ChildViewController alloc init Assign self as the delegate for the child view controller detailViewController.delegate self self.navigationController pushViewController..

UIDatePicker in UITextField in UITableView realtime update

http://stackoverflow.com/questions/6208118/uidatepicker-in-uitextfield-in-uitableview-realtime-update

share improve this question You don't need to instantiate multiple instances of UIDatePicker . One should do. Assign it to all the text fields. Now to update the text field you will have to identify which text field is being updated. For..

FFMPEG integration on iphone/ ipad project

http://stackoverflow.com/questions/6854190/ffmpeg-integration-on-iphone-ipad-project

Linking static libraries in Xcode Firstly we pull in the .a files. Create a new Empty Application using Xcode. Assign a Product Name and Company Identifier. Then click Next and save the project. Locate the universal libs that we created the..

How do I find out if I need to retain or assign an property?

http://stackoverflow.com/questions/785353/how-do-i-find-out-if-i-need-to-retain-or-assign-an-property

to learn when I should use retain and when assign objective c iphone cocoa touch share improve this question Assign is for primitive values like BOOL NSInteger or double. For objects use retain or copy depending on if you want to keep a..

Application crashed while importing songs from Ipod library in Iphone for iOs 5.0

http://stackoverflow.com/questions/8077725/application-crashed-while-importing-songs-from-ipod-library-in-iphone-for-ios-5

MPMediaItemCollection mediaItemCollection We need to dismiss the picker self dismissModalViewControllerAnimated YES Assign the selected item s to the music player and start playback. counterIpod mediaItemCollection.items count totalcollection..

Assign a method for didEndOnExit event of UITextField

http://stackoverflow.com/questions/861550/assign-a-method-for-didendonexit-event-of-uitextfield

a method for didEndOnExit event of UITextField How do I programmatically assign a method observer to the didEndOnExit event..

Setting a background image for a tabbar

http://stackoverflow.com/questions/8909379/setting-a-background-image-for-a-tabbar

setImage btnImageSelected forState UIControlStateHighlighted UIControlStateSelected settingsButton setTag 101 Assign the button a tag so when our click event is called we know which button was pressed. settingsButton setSelected true Set..

iphone cocoa : how to drag an image along a path

http://stackoverflow.com/questions/892011/iphone-cocoa-how-to-drag-an-image-along-a-path

the 'new' calculated clamped x y values use it to create a new transform using CGAffineTransformMakeTranslation x y . Assign this transform to the UIImageView. The image moves to that place. Once the finger lifts figure out the delta from the original..

ios capturing image using AVFramework

http://stackoverflow.com/questions/8924299/ios-capturing-image-using-avframework

value such as 15 fps set minFrameDuration. Start the session running to start the flow of data session startRunning Assign session to an ivar. self setSession session Delegate routine that is called when a sample buffer was written void captureOutput..

AVCaptureSession specify resolution and quality of captured images obj-c iphone app

http://stackoverflow.com/questions/9312832/avcapturesession-specify-resolution-and-quality-of-captured-images-obj-c-iphone

If you wish to cap the frame rate to a known value such as 15 fps set minFrameDuration. Assign session to an ivar. self setSession captureSession self.captureSession startRunning and setSession void setSession AVCaptureSession..

Use storyboards in a project which has .xib files- iPhone

http://stackoverflow.com/questions/9701873/use-storyboards-in-a-project-which-has-xib-files-iphone

from a storyboard Add a new storyboard to your existing project. Add a single view controller to the storyboard. Assign an identifier to the view controller in the inspector. Use the UIStoryboard class to load the storyboard resource Use UIStoryboard..

how to random placement of UIButton and value

http://stackoverflow.com/questions/9714559/how-to-random-placement-of-uibutton-and-value

0 i count i int nElements count i int n arc4random nElements i indexArray exchangeObjectAtIndex i withObjectAtIndex n Assign the frames button1.frame NSValue indexArray objectAtIndex 0 CGRectValue button2.frame NSValue indexArray objectAtIndex 1..