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2014/10/15 ¤U¤È 10:04:44
iphone Programming Glossary: builderHow to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView that I'm working with..
iPhone Keyboard Covers UITextField http://stackoverflow.com/questions/1247113/iphone-keyboard-covers-uitextfield Keyboard Covers UITextField I have an app where in Interface Builder I set up a UIView that has a text field near the bottom of the view. When I run the app and try to enter..
http://stackoverflow.com/questions/1328638/placeholder-in-uitextview release _placeholder nil super dealloc #endif void awakeFromNib super awakeFromNib Use Interface Builder User Defined Runtime Attributes to set placeholder and placeholderColor in Interface Builder. if self.placeholder.. Builder User Defined Runtime Attributes to set placeholder and placeholderColor in Interface Builder. if self.placeholder self setPlaceholder @ if self.placeholderColor self setPlaceholderColor UIColor..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone While you can get around it by adding a IBOutlet on the UIView and connecting these in Interface Builder this is not recommended. The view should not know about the view controller. Instead you should do as..
How to create a multiline UITextfield? http://stackoverflow.com/questions/1345561/how-to-create-a-multiline-uitextfield to use UITextView instead of UITextField for display and editing of multiline text . In Interface Builder add a UITextView where you want it and select the editable box. It will be multiline by default. share..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction IBOutlet are macros defined to denote variables and methods that can be referred to in Interface Builder. IBAction resolves to void and IBOutlet resolves to nothing but they signify to Xcode and Interface.. in Interface builder to link UI elements to your code. If you're not going to be used Interface Builder at all then you don't need them in your code but if you are going to use it then you need to specify..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel for Introduction to NSAttributedString for iOS 6 and Attributed strings for iOS using Interface Builder PS Above code it should work but it was brain compiled. I hope it is enough Old Answer for iOS5 and..
How to make a transparent UIWebView http://stackoverflow.com/questions/3646930/how-to-make-a-transparent-uiwebview webView.opaque NO webView.backgroundColor UIColor clearColor setting these properties in Interface Builder will work for iOS 5.0 but for iOS 4.3 you must set the backgroundColor in code And include this into..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode the start regardless of the position of the device Both programmatically and using the Interface Builder. iphone objective c share improve this question Exciting news As discovered by Andrew below This..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file for my needs. Second depending on the format layout of 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..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers onto the navigation controller. For an example of how to do this visually using Interface Builder take a look at this tutorial . Third and perhaps most importantly note that the best practices mentioned..
How to change UIPickerView height http://stackoverflow.com/questions/573979/how-to-change-uipickerview-height PickerViews but setting a smaller frame doesn't seem to work and the frame is locked in Interface Builder. iphone cocoa touch uikit uipickerview share improve this question It seems obvious that Apple..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone Now open up the Resources group and double click on MainWindow.xib to open it in Interface Builder. From here you should see a window named Window . Hit Cmd Shift L to bring up the Library and drag a..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder How to load a View using a nib file created with Interface Builder I'm trying to do something a bit elaborate but that should be possible so here is a challenge for all.. the Question1View object a as UIView subclass defining some IBOutlets. Create using Interface Builder the Question1View.xib HERE IS WHERE MY PROBLEM PROBABLY ARE . I set the both the ViewController and..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction for the iPhone does it make any difference if I don't use them iphone objective c interface builder ibaction iboutlet share improve this question IBAction and IBOutlet are macros defined to denote.. IBAction resolves to void and IBOutlet resolves to nothing but they signify to Xcode and Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code... signify to Xcode and Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code. If you're not going to be used Interface Builder at all then you don't..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode this work fully properly there are at least three problems bugs at play. try this .. interface builder landscape design Note in particular that where it says and you need to use shouldAutorotateToInterfaceOrientation..
Locking the Fields in MFMailComposeViewController http://stackoverflow.com/questions/6284599/locking-the-fields-in-mfmailcomposeviewcontroller that I created for user feedback. It has both @2x and regular. You will have to go into interface builder and create the label though that says sending test drive.. . Its already in the code but I didnt add.. framework to your project 3. Make sure to attach the UILabel name loadingLabel in interface builder 4. The username and password that the code is refering to is an smtp server. If you dont have one create..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder a viewController class. Any ideas Thanks Gonso iphone objective c ios cocoa touch interface builder share improve this question There is also an easier way to access the view instead of dealing with..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present be implemented in order to automatically scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView that I'm working with is brought up by a tabbar UITabBar which needs to function..
iPhone Keyboard Covers UITextField http://stackoverflow.com/questions/1247113/iphone-keyboard-covers-uitextfield Keyboard Covers UITextField I have an app where in Interface Builder I set up a UIView that has a text field near the bottom of the view. When I run the app and try to enter text into that field the keyboard slides up overtop of..
http://stackoverflow.com/questions/1328638/placeholder-in-uitextview _placeholderColor release _placeholderColor nil _placeholder release _placeholder nil super dealloc #endif void awakeFromNib super awakeFromNib Use Interface Builder User Defined Runtime Attributes to set placeholder and placeholderColor in Interface Builder. if self.placeholder self setPlaceholder @ if self.placeholderColor.. dealloc #endif void awakeFromNib super awakeFromNib Use Interface Builder User Defined Runtime Attributes to set placeholder and placeholderColor in Interface Builder. if self.placeholder self setPlaceholder @ if self.placeholderColor self setPlaceholderColor UIColor lightGrayColor NSNotificationCenter defaultCenter addObserver..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone controller is achieved There is no built in way to do it. While you can get around it by adding a IBOutlet on the UIView and connecting these in Interface Builder this is not recommended. The view should not know about the view controller. Instead you should do as @Phil M suggests and create a protocol to be used as the delegate...
How to create a multiline UITextfield? http://stackoverflow.com/questions/1345561/how-to-create-a-multiline-uitextfield
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction iboutlet share improve this question IBAction and IBOutlet are macros defined to denote variables and methods that can be referred to in Interface Builder. IBAction resolves to void and IBOutlet resolves to nothing but they signify to Xcode and Interface builder that these variables and methods can be used in Interface.. Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code. If you're not going to be used Interface Builder at all then you don't need them in your code but if you are going to use it then you need to specify IBAction for methods that will be used in IB and IBOutlet for..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel explain with more examples uses of NSAttributedString look for Introduction to NSAttributedString for iOS 6 and Attributed strings for iOS using Interface Builder PS Above code it should work but it was brain compiled. I hope it is enough Old Answer for iOS5 and below Use a CATextLayer with an NSAttributedString much lighter..
How to make a transparent UIWebView http://stackoverflow.com/questions/3646930/how-to-make-a-transparent-uiwebview touch uiwebview share improve this question I recommend webView.opaque NO webView.backgroundColor UIColor clearColor setting these properties in Interface Builder will work for iOS 5.0 but for iOS 4.3 you must set the backgroundColor in code And include this into your HTML code body style background color transparent share..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode create an iPhone application that runs in landscape mode from the start regardless of the position of the device Both programmatically and using the Interface Builder. iphone objective c share improve this question Exciting news As discovered by Andrew below This problem has been fixed by Apple in 4.0 . Here is a FULL TEST..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file but once I got my project setup properly it worked fine for my needs. Second depending on the format layout of 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..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers for an example of how to programmatically push a controller onto the navigation controller. For an example of how to do this visually using Interface Builder take a look at this tutorial . Third and perhaps most importantly note that the best practices mentioned in the Stanford presentation are much easier to understand..
How to change UIPickerView height http://stackoverflow.com/questions/573979/how-to-change-uipickerview-height of UIPickerView Some applications seem to have shorter PickerViews but setting a smaller frame doesn't seem to work and the frame is locked in Interface Builder. iphone cocoa touch uikit uipickerview share improve this question It seems obvious that Apple doesn't particularly invite mucking with the default height..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone with Subclass of set to UIView and give it a name say MyView.m. Now open up the Resources group and double click on MainWindow.xib to open it in Interface Builder. From here you should see a window named Window . Hit Cmd Shift L to bring up the Library and drag a View component onto your window and position it so you can..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder How to load a View using a nib file created with Interface Builder I'm trying to do something a bit elaborate but that should be possible so here is a challenge for all you experts out there this forum is pack of the lot of you.. that needs to be answered. The way I'm doing this is Create the Question1View object a as UIView subclass defining some IBOutlets. Create using Interface Builder the Question1View.xib HERE IS WHERE MY PROBLEM PROBABLY ARE . I set the both the ViewController and the View to be of class Question1View. I link the outlets with..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction the purpose of using IBAction and IBOutlet in Objective C coding for the iPhone does it make any difference if I don't use them iphone objective c interface builder ibaction iboutlet share improve this question IBAction and IBOutlet are macros defined to denote variables and methods that can be referred to in Interface.. and methods that can be referred to in Interface Builder. IBAction resolves to void and IBOutlet resolves to nothing but they signify to Xcode and Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code. If you're not going to be used Interface Builder at all then.. resolves to void and IBOutlet resolves to nothing but they signify to Xcode and Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code. If you're not going to be used Interface Builder at all then you don't need them in your code but if you are going to use it then..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode is totally irrelevant now It is EXTREMELY DIFFICULT to make this work fully properly there are at least three problems bugs at play. try this .. interface builder landscape design Note in particular that where it says and you need to use shouldAutorotateToInterfaceOrientation properly everywhere it means everywhere all your..
Locking the Fields in MFMailComposeViewController http://stackoverflow.com/questions/6284599/locking-the-fields-in-mfmailcomposeviewcontroller zip file that you can download includes the overlay images that I created for user feedback. It has both @2x and regular. You will have to go into interface builder and create the label though that says sending test drive.. . Its already in the code but I didnt add it from code. So youll have to add it in IB. 1. Make sure to.. you downloaded to your project. 2. Make sure to add the CFNetwork framework to your project 3. Make sure to attach the UILabel name loadingLabel in interface builder 4. The username and password that the code is refering to is an smtp server. If you dont have one create a gmail account and use gmail settings. If you are not..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder way to load the view using the nib file without needing to create a viewController class. Any ideas Thanks Gonso iphone objective c ios cocoa touch interface builder share improve this question There is also an easier way to access the view instead of dealing with the nib as an array. 1 Create a custom View subclass with..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView that I'm working with is brought up by a..
iPhone Keyboard Covers UITextField http://stackoverflow.com/questions/1247113/iphone-keyboard-covers-uitextfield Keyboard Covers UITextField I have an app where in Interface Builder I set up a UIView that has a text field near the bottom of the view. When I run the app and try to enter text into that..
http://stackoverflow.com/questions/1328638/placeholder-in-uitextview nil _placeholder release _placeholder nil super dealloc #endif void awakeFromNib super awakeFromNib Use Interface Builder User Defined Runtime Attributes to set placeholder and placeholderColor in Interface Builder. if self.placeholder self setPlaceholder.. Use Interface Builder User Defined Runtime Attributes to set placeholder and placeholderColor in Interface Builder. if self.placeholder self setPlaceholder @ if self.placeholderColor self setPlaceholderColor UIColor lightGrayColor NSNotificationCenter..
Get to UIViewController from UIView on iPhone? http://stackoverflow.com/questions/1340434/get-to-uiviewcontroller-from-uiview-on-iphone in way to do it. While you can get around it by adding a IBOutlet on the UIView and connecting these in Interface Builder this is not recommended. The view should not know about the view controller. Instead you should do as @Phil M suggests and..
How to create a multiline UITextfield? http://stackoverflow.com/questions/1345561/how-to-create-a-multiline-uitextfield is correct you need to use UITextView instead of UITextField for display and editing of multiline text . In Interface Builder add a UITextView where you want it and select the editable box. It will be multiline by default. share improve this answer..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction IBAction and IBOutlet are macros defined to denote variables and methods that can be referred to in Interface Builder. IBAction resolves to void and IBOutlet resolves to nothing but they signify to Xcode and Interface builder that these variables.. methods can be used in Interface builder to link UI elements to your code. If you're not going to be used Interface Builder at all then you don't need them in your code but if you are going to use it then you need to specify IBAction for methods..
shouldAutorotateToInterfaceOrientation doesn't work http://stackoverflow.com/questions/2868132/shouldautorotatetointerfaceorientation-doesnt-work may need to do this in code if you haven't set springs and struts in IB for all of your views. Quoting the Interface Builder User's Guide Important In a Cocoa nib file if you do not set any springs or struts for your view in Interface Builder but.. Builder User's Guide Important In a Cocoa nib file if you do not set any springs or struts for your view in Interface Builder but then do use the setAutoresizingMask method to add autosizing behavior at runtime your view may still not exhibit the.. behavior at runtime your view may still not exhibit the correct autoresizing behavior. The reason is that Interface Builder disables autosizing of a parent view ™s children altogether if those children have no springs and struts set. To enable the..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel look for Introduction to NSAttributedString for iOS 6 and Attributed strings for iOS using Interface Builder PS Above code it should work but it was brain compiled. I hope it is enough Old Answer for iOS5 and below Use a CATextLayer..
How to make a transparent UIWebView http://stackoverflow.com/questions/3646930/how-to-make-a-transparent-uiwebview I recommend webView.opaque NO webView.backgroundColor UIColor clearColor setting these properties in Interface Builder will work for iOS 5.0 but for iOS 4.3 you must set the backgroundColor in code And include this into your HTML code body..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode landscape mode from the start regardless of the position of the device Both programmatically and using the Interface Builder. iphone objective c share improve this question Exciting news As discovered by Andrew below This problem has been fixed..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file it worked fine for my needs. Second depending on the format layout of 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..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers push a controller onto the navigation controller. For an example of how to do this visually using Interface Builder take a look at this tutorial . Third and perhaps most importantly note that the best practices mentioned in the Stanford..
How to change UIPickerView height http://stackoverflow.com/questions/573979/how-to-change-uipickerview-height seem to have shorter PickerViews but setting a smaller frame doesn't seem to work and the frame is locked in Interface Builder. iphone cocoa touch uikit uipickerview share improve this question It seems obvious that Apple doesn't particularly..
How do I draw a line on the iPhone? http://stackoverflow.com/questions/856354/how-do-i-draw-a-line-on-the-iphone it a name say MyView.m. Now open up the Resources group and double click on MainWindow.xib to open it in Interface Builder. From here you should see a window named Window . Hit Cmd Shift L to bring up the Library and drag a View component onto..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder How to load a View using a nib file created with Interface Builder I'm trying to do something a bit elaborate but that should be possible so here is a challenge for all you experts out there.. I'm doing this is Create the Question1View object a as UIView subclass defining some IBOutlets. Create using Interface Builder the Question1View.xib HERE IS WHERE MY PROBLEM PROBABLY ARE . I set the both the ViewController and the View to be of class..
how do I use UIScrollView in Interface Builder? http://stackoverflow.com/questions/1135163/how-do-i-use-uiscrollview-in-interface-builder scrolls. Is it possible to do this entirely via IB or must I manipulate the contentSize via code iphone interface builder uiscrollview share improve this question You forgot to set the contentSize property of the UIScrollView. Strangely enough..
Does an IBOutlet needs to be a property & synthesized? http://stackoverflow.com/questions/1221516/does-an-iboutlet-needs-to-be-a-property-synthesized it in three places without a real need does not strike me as very DRY Don't Repeat Yourself . iphone interface builder share improve this question On Mac OS X IBOutlets are connected like this Look for a method called set OutletName ...
How to make xib compatible with both iphone 5 and iphone 4 devices http://stackoverflow.com/questions/13275144/how-to-make-xib-compatible-with-both-iphone-5-and-iphone-4-devices I have to support IOS 5 I cannot use autolayout. I have to use springs and Struts. I tried everything in interface builder. But either my view is going beyond the bottom of iphone 3.5 inch or not filling completely the iphone 4 inch retina. Can.. 3.5 in attribute inspector it looks in iphone 5. There is a space below the buttons If I set size 4 inch in interface builder. You can see that bottom buttons are not visible in iphone 4. So you will ask what are the settings I am using. Here are.. are not visible in iphone 4. So you will ask what are the settings I am using. Here are they iphone xcode interface builder share improve this question Firstly you write the app for iphone 4 completely. Then add an extra xib only xib not .h..
Core-Data iPhone: could not locate an NSManagedObjectModel http://stackoverflow.com/questions/1632497/core-data-iphone-could-not-locate-an-nsmanagedobjectmodel page first not the Books tableview RootViewController . I have done the following I created a menu page in interface builder just a view with a button on it The CoreDataBooksAppDelegate.h now looks like this for the menu @class MenuViewController..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction in Objective C coding for the iPhone does it make any difference if I don't use them iphone objective c interface builder ibaction iboutlet share improve this question IBAction and IBOutlet are macros defined to denote variables and methods.. Interface Builder. IBAction resolves to void and IBOutlet resolves to nothing but they signify to Xcode and Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code. If you're not going.. to nothing but they signify to Xcode and Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code. If you're not going to be used Interface Builder at all then you don't need them in your..
Is there a way to change the height of a UIToolbar? http://stackoverflow.com/questions/2135407/is-there-a-way-to-change-the-height-of-a-uitoolbar like to make this larger. Does Apple allow resizing of this control If so how do I go about it iphone xcode interface builder uitoolbar share improve this question Sure just set its frame differently myToolbar setFrame CGRectMake 0 50 320 35..
How to add a button to UINavigationBar? http://stackoverflow.com/questions/2504351/how-to-add-a-button-to-uinavigationbar to add a button to UINavigationBar How to add a button to UINavigationBar programmatically iphone xcode interface builder uinavigationbar share improve this question Sample code to set the right button on a navigation bar. UIBarButtonItem..
How do I enter RGB values into Interface Builder? http://stackoverflow.com/questions/2565008/how-do-i-enter-rgb-values-into-interface-builder colors but I would like to manually enter in RGB values. Where can I do this iphone cocoa touch xcode gui interface builder share improve this question Click on the color slider icon and then choose RGB Sliders from the drop down list. You..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode DIFFICULT to make this work fully properly there are at least three problems bugs at play. try this .. interface builder landscape design Note in particular that where it says and you need to use shouldAutorotateToInterfaceOrientation properly..
Loading a Reusable UITableViewCell from a Nib http://stackoverflow.com/questions/413993/loading-a-reusable-uitableviewcell-from-a-nib cell types for reuses but still be able to design them in Interface Builder iphone cocoa touch uitableview interface builder share improve this question Just implement a method with the appropriate method signature NSString reuseIdentifier return..
Changing the size of the UISearchBar TextField? http://stackoverflow.com/questions/556814/changing-the-size-of-the-uisearchbar-textfield iphone search uitableview share improve this question it's much easier than all these suggestions. In interface builder instead of putting the Search Bar as the header of your Table View you can put a View instead. Then put a Navigation Bar..
Locking the Fields in MFMailComposeViewController http://stackoverflow.com/questions/6284599/locking-the-fields-in-mfmailcomposeviewcontroller the overlay images that I created for user feedback. It has both @2x and regular. You will have to go into interface builder and create the label though that says sending test drive.. . Its already in the code but I didnt add it from code. So youll.. sure to add the CFNetwork framework to your project 3. Make sure to attach the UILabel name loadingLabel in interface builder 4. The username and password that the code is refering to is an smtp server. If you dont have one create a gmail account..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder without needing to create a viewController class. Any ideas Thanks Gonso iphone objective c ios cocoa touch interface builder share improve this question There is also an easier way to access the view instead of dealing with the nib as an array...
How do you shrink a UIPickerView on the iPhone? http://stackoverflow.com/questions/905969/how-do-you-shrink-a-uipickerview-on-the-iphone but I can't find an easy way to resize this control. How do you shrink a UIPickerView iphone ios interface builder uipickerview picker share improve this question Actually you can slightly shrink the whole UIPickerView by applying..
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