Recent questions tagged IOS

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ios - Keeping the contentOffset in a UICollectionView while rotating Interface Orientation

I'm trying to handle interface orientation changes in a UICollectionViewController. What I'm trying to achieve is, ... my Project on GitHub. See Question&Answers more detail:os...

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

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252 views

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ios - Limit number of characters in uitextview

I am giving a text view to tweet some string . I am applying the following method to restrict the number of ... re-enable the text 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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174 views

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ios - Xcode - Is there a way to drag a component from one view to another without losing its frame?

What I'd like to do is drag a component/view from one superview to another in Xcode's interface-builder ... width/height. Is this possible? See Question&Answers more detail:os...

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

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264 views

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ios - How do I get the RootViewController from a pushed controller?

So, I push a view controller from RootViewController like: [self.navigationController pushViewController:anotherViewController ... or not? See Question&Answers more detail:os...

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

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321 views

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ios - How to respond to push notification view if app is already running in the background

I have something fairly simple I want to do. I attach a custom piece of data to some push notifications ... first time from the notification. See Question&Answers more detail:os...

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

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178 views

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ios - UICollectionView and SwiftUI?

How to create grid of square items (for example like in iOS Photo Library) with SwiftUI? I tried this ... List still has UITableView style: See Question&Answers more detail:os...

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

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415 views

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ios - Add rounded corners to all UIImageViews

I would like to add some rounded corners to all of the UIImageViews in my project. I have already got the ... welcomeImageView.frame = frame; } See Question&Answers more detail:os...

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

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442 views

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ios - How to change the blue highlight color of a UITableViewCell?

I'm wondering how to change the blue highlight/selection color of a UITableViewCell, any ideas? See Question&Answers more detail:os...

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

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386 views

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ios - How to hide the "back" button in UINavigationController?

Do you know how to hide the 'back' button in a UINavigationController? Also, how to show it back, but I ... hit 'Edit' while viewing emails. See Question&Answers more detail:os...

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

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200 views

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ios - Proper usage of intrinsicContentSize and sizeThatFits: on UIView Subclass with autolayout

I'm asking this (somehow) simple question just to be finicky, because sometimes I'm worried about a ... here and support fully autolayout? See Question&Answers more detail:os...

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

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296 views

1 answer

ios - What values should I use for CFBundleVersion and CFBundleShortVersionString?

This is my first iOS app submission and I don't want my app rejected. This is from the Apple Docs: ... what I am supposed to put? See Question&Answers more detail:os...

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

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365 views

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ios - Swift - Protocol extensions - Property default values

Let's say that I have the following protocol: protocol Identifiable { var id: Int {get} var name: String { ... (recursive). Thanks in advance. See Question&Answers more detail:os...

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

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571 views

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ios - XCTest/XCTest.h not found on old projects built in Xcode 6

I have a few projects I'm trying to build with Xcode 6 Beta 2. The projects all have some type of library ... I need to update with my project? See Question&Answers more detail:os...

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

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199 views

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ios - How to integrate Cocoapods with a Swift project?

As Apple introduced Swift, their new programming language, I wonder how you can integrate it with existing ... are available via CocoaPods? See Question&Answers more detail:os...

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

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281 views

1 answer

ios - Xcode: Could not locate device support files

As i am trying to run my application from newly updated Xcode 8 to my iPhone 4 which is running iOS 7 ... ? Awaiting for your suggestions!! See Question&Answers more detail:os...

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

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1.1k views

1 answer

ios - How to copy text to clipboard/pasteboard with Swift

I'm looking for a clean example of how to copy text to iOS clipboard that can then be used/pasted in other ... in the code example they supply. See Question&Answers more detail:os...

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

0 votes

286 views

1 answer

ios - how to set cornerRadius for only bottom-left,bottom-right and top-left corner of a UIView?

Is there a way to set cornerRadius for only bottom-left,bottom-right and top-left corner of a UIView? I tried ... ; view.layer.mask = maskLayer; 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 - How to tell what profile/signing certificate was used to sign .ipa?

I have a bunch of .ipa files and I've used a script to resign them. So how can check the provisioning profile ... didn't actually do the job. See Question&Answers more detail:os...

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

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279 views

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ios - Remove tab bar item text, show only image

Simple question, how can I remove the tab bar item text and show only the image? I want the bar items to ... image like in the instagram app? See Question&Answers more detail:os...

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

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442 views

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ios - Make a VStack fill the width of the screen in SwiftUI

Given this code: import SwiftUI struct ContentView: View { var body: some View { VStack(alignment: .leading) { Text ... : Is there a better way? See Question&Answers more detail:os...

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

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375 views

1 answer

ios - Creating thumbnail from local video in swift

How to create thumbnail in swift from a local video file ? For example if the video file path is located ... -9E97-CA4F1F95D6B6.MOV Thank you. See Question&Answers more detail:os...

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

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430 views

1 answer

ios - UITextfield leftView/rightView padding on iOS7

The leftView and rightView views of an UITextField on iOS7 are really close to the textfield border ... UITextField with UITextBorderStyleNone 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

1 answer

ios - How to show the loading indicator in the top status bar

I have noticed that some apps like Safari and Mail show a loading indicator in the status bar (the bar at the ... is this an Apple only thing? See Question&Answers more detail:os...

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

0 votes

444 views

1 answer

ios - Completion block for popViewController

When dismissing a modal view controller using dismissViewController, there is the option to provide a completion ... are some workarounds? See Question&Answers more detail:os...

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

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173 views

1 answer

ios - How to render view into image faster?

I'm making magnifier app, which allows an user touch the screen and move his finger, there will be a ... ? does renderInContext: use GPU? See Question&Answers more detail:os...

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

0 votes

178 views

1 answer

ios - Xcode 10b5 - duplicate symbol linker error, can't compile with Crashlytics

I'm trying to compile my project, which has both Firebase, Crashlytics/Fabric, and a bunch of other stuff ... have static categories on classes 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

1 answer

ios - UICollectionView autosize height

How do I properly resize a UICollectionView so that it fully displays its contents? I have tried many things, ... facilities, which work fine. See Question&Answers more detail:os...

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

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219 views

1 answer

ios - How do I use NSOperationQueue with NSURLSession?

I'm trying to build a bulk image downloader, where images can be added to a queue on the fly to be downloaded ... I get back from the download. See Question&Answers more detail:os...

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

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