Recent questions tagged iOS

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ios - How to make return key on iPhone make keyboard disappear?

I have two UITextFields (e.g. username and password) but I cannot get rid of the keyboard when pressing the return ... . How can I do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - UICollectionView auto scroll to cell at IndexPath

Before loading the collection view user sets the number of image in the array of collection view. All of ... at the load of UICollectionView? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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683 views

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ios - Could not launch process launch failed: timed out waiting for app to launch

I am trying to launch my app on device. It is launching successfully on the simulator. List item I use 7.1 SDK ... it set to 'Dont Code Sign' See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - How to draw a transparent stroke (or anyway clear part of an image) on the iPhone

I have a small app that allows the user to draw on the screen with the finger. I have a UIImageView where ... finger, when he moves it? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Allow unverified ssl certificate in UIWebview

I'm embedding a website in a UIWebView. During development I have it pointed at localhost. The problem is that ... to allow the unverified url? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Front facing camera in UIImagePickerController

I am developing the front facing camera app in iPad2 by using the UIImagePickerController. When I capture the image it ... ; [imgPkr release]; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - UIFont - how to get system thin font

UIFont has methods to get regular font (systemFontOfSize) or bold font (boldSystemFontOfSize), but how to get a ... works for non system fonts. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Cookie sharing between multiple WKWebViews

I create a few WkWebViews in my app, but when cookies are set for one webview, they do not take effect in ... all use the same cookie storage? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - UICollectionView insert cells above maintaining position (like Messages.app)

By default Collection View maintains content offset while inserting cells. On the other hand I'd like to insert cells ... the way to achieve it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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182 views

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ios - Making RGB color in Xcode

I am using RGB values of a color from Photoshop and using the same in Xcode the values are.Color-R-160,G ... . Why this difference is happening? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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488 views

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ios - Bundle.main.path(forResource:ofType:inDirectory:) returns nil

Try not to laugh or cry -- I'm just getting back into coding after 20 years out... I've spent more than 4 ... > Add Files to ... menu item. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - How to write an Apple Push Notification Provider in C#?

Apple really had bad documentation about how the provider connects and communicates to their service (at the time of ... is this done in C#? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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403 views

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ios - Dismissing UIAlertViews when entering background state

Apple recommends dismissing any UIAlertViews/UIActionSheets when entering background state in iOS 4. This is to avoid any ... ... Any idea ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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167 views

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ios - CoreMotion updates in background state

With the M7 chip in the latest iOS devices one can get programmatically notified as the user goes from stationary to ... did they go about this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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235 views

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ios - Why is there an frame rectangle and an bounds rectangle in an UIView?

Well although it's late in the dark night, I don't get it why there are two different rectangles: frame ... is not very good for understanding. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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180 views

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ios - Swift stack and heap understanding

I want to understand what is stored in the stack and heap in swift. I have a rough estimation: Everything ... representation of the stack/heap? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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283 views

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ios - presenting ViewController with NavigationViewController swift

I have system "NavigationViewController -> MyViewController", and I programmatically want to present MyViewController ... completion: nil) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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254 views

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ios - How to add a button to UINavigationBar?

How to add a button to UINavigationBar programmatically? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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399 views

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ios - How to develop iPhone MDM Server?

I just read about Mobile Device Management Server for iOS devices, but all documentations refers to "third party MDM ... any doc about this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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182 views

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ios - Email & Phone Validation in Swift

i am using the following code for phone number validation. But i am getting the following error. I cant able ... must be of Optional type See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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361 views

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ios - Linking child view controllers to a parent view controller within storyboard

Can you associate child view controllers to a custom container view controller in Storyboard? I can link child view ... VC to accept child VCs? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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181 views

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ios - UIView touch event in controller

How can I add UIView touchbegin action or touchend action programmatically as Xcode is not providing from Main.storyboard? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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276 views

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ios - Face Recognition on the iPhone

How can I do facial recognition on the iPhone. Could someone provide me with references/articles to point me ... against the remote database). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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417 views

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ios - Locking a UISearchBar to the top of a UITableView like Game Center

There's this cool feature in the UITableViews in Game Center and the search bars they have at their tops. Unlike ... may be simpler than that. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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180 views

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ios - xcode 5.1: libCordova.a architecture problems

Yesterday (3/10/14) when iOS 7.1 was released I also upgraded to Xcode 5.1 and found that my PhoneGap/ ... issues.apache.org/jira/browse/CB-6223 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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212 views

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ios - Draw line in UIView

I need to draw a horizontal line in a UIView. What is the easiest way to do it. For example, I want to ... . I am NOT using Interface Builder. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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271 views

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ios - How to create border in UIButton?

I use custom button in my app named "addButton" and I want to border it with white color how can i get ... color border around my custom button? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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299 views

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ios - Xcode exception breakpoint doesn't print details of the exception being thrown

SUMMARY When I set an exception breakpoint, I don't get the exception message. How do I get the exception ... this plea after that happens.) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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