Recent questions tagged IOS

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ios - UINavigationController "back button" custom text?

The "back button" of a UINavigationController by default shows the title of the last view in the stack. Is ... in the back button instead? 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 - Simple http post example in Objective-C?

I have a php webpage that requires a login (userid & password). I have the user enter the information into ... have any good examples? Alex 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 - Restoring animation where it left off when app resumes from background

I have an endlessly looping CABasicAnimation of a repeating image tile in my view: a = [CABasicAnimation ... re-add it later? 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 - Why masksToBounds = YES prevents CALayer shadow?

With the following snippet, I'm adding a drop shadow effect to one my UIView. Which works pretty well. But as ... you have any ideas on 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 - How to create a centered UICollectionView like in Spotify's Player

I am have a lot of difficulty trying to create a UICollectionView like in Spotify's Player that acts like this: ... events? Would love any help! See Question&Answers more detail:os...

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

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210 views

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ios - Swift apply .uppercaseString to only the first letter of a string

I am trying to make an autocorrect system, and when a user types a word with a capital letter, the ... capitalized? Thanks for any help! 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 - iOS6 UDID - What advantages does identifierForVendor have over identifierForAdvertising?

Apple is changing their privacy settings for iOS6 and deprecating device UUIDs (UDIDs). According to a ... have over -identifierForAdvertising? 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 store an image in core data

I'm new to iOS. I've been trying to make an application that will store an image captured from the camera into ... :nil]; [ll show]; } 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 - My app was just rejected for using the Ad support framework. Which library is responsible?

This was simply an update that didn't change anything to do with the rejection reason. Here is the response ... library is the issue? 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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332 views

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ios - How do I show/hide a UIBarButtonItem?

I created a toolbar in IB with several buttons. I would like to be able to hide/show one of the buttons depending on ... how I'd get it back). See Question&Answers more detail:os...

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

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313 views

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ios - How to center align the cells of a UICollectionView?

I am currently using UICollectionView for the user interface grid, and it works fine. However, I'd like to be enable ... 0 0 0 x x x x See Question&Answers more detail:os...

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

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354 views

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ios - Swift - Problems with corner radius and drop shadow

I'm trying to create a button with rounded corners and a drop shadow. No matter how I switch up, the ... .layer.shadowOffset = shadowOffset } } See Question&Answers more detail:os...

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

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266 views

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ios - iBeacon Notification when the app is not running

I managed to make an iBeacon which triggers a local push notification on my iPhone when the beacon is in range ... I accomplish this? 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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330 views

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ios - NSOperation and NSOperationQueue working thread vs main thread

I have to carry out a series of download and database write operations in my app. I am using ... dealing with NSOperation and NSOperationQueue. See Question&Answers more detail:os...

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

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189 views

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ios - What does "@private" mean in Objective-C?

What does @private mean in Objective-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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306 views

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ios - Formatting a UITextField for credit card input like (xxxx xxxx xxxx xxxx)

I want to format a UITextField for entering a credit card number into such that it only allows digits to be entered ... XXXX 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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413 views

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ios - Xcode 8 shows error that provisioning profile doesn't include signing certificate

Xcode 8 shows error that provisioning profile doesn't include signing certificate. This issue is with Xcode ... related identified certificate. See Question&Answers more detail:os...

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

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221 views

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ios - How can I use Autolayout to set constraints on my UIScrollview?

I have spent two days trying out the various solutions for Mixed and Pure Autolayout approaches to achieve what was a ... is what it should be. See Question&Answers more detail:os...

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

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301 views

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ios - Get the right color in iOS7 translucent navigation bar

How can I get the right coloring for my translucent navigation bars in iOS 7? The navigation bar just ... Now posted to Apple BugReporter See Question&Answers more detail:os...

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

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278 views

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ios - iPhone "slide to unlock" animation

Any ideas as to how Apple implemented the "slide to unlock" (also, "slide to power off" is another ... the string on jailbroken iphones. See Question&Answers more detail:os...

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

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519 views

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ios - What is the difference between Modal and Push segue in Storyboards?

Can someone explain to me what is the exact difference between modal and push segue? I know that when ... that has a UIViewController. See Question&Answers more detail:os...

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

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302 views

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ios - CALayer with transparent hole in it

I have a simple view (left side of the picture) and i need to create some kind of overlay (right side of the ... ... Thanks a lot for help! See Question&Answers more detail:os...

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

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367 views

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ios - How to style UITextview to like Rounded Rect text field?

I am using a text view as a comment composer. In the properties inspector I can't find anything like a ... a UITextField with a rounded rect? See Question&Answers more detail:os...

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

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311 views

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ios - Xcode 6 - Launch simulator from command line

I want to launch iPhone simulator from command line. until now I have been using the below command /Applications/ ... for this with Xcode 6? See Question&Answers more detail:os...

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

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363 views

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ios - Difference between dispatch_async and dispatch_sync on serial queue?

I've created a serial queue like this: dispatch_queue_t _serialQueue = dispatch_queue_create("com.example.name", ... TASK 2, correct? See Question&Answers more detail:os...

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

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346 views

1 answer

ios - Is it possible to update a localized storyboard's strings?

I localized a part of my application with creating a base.lproj storyboard and 3 string files for ... and Localizable.strings? See Question&Answers more detail:os...

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

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317 views

1 answer

ios - How to remove all subviews?

When my app gets back to its root view controller, in the viewDidAppear: method I need to remove all subviews. 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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353 views

1 answer

ios - UITableView - scroll to the top

In my table view I have to scroll to the top. But I cannot guarantee that the first object is going to be ... scroll to the top of table view? See Question&Answers more detail:os...

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

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