Recent questions tagged iOS

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ios - Can I launch one app from other app on iPhone

I want to create app which have to launch another app and run some features in last. I mean my app A ... some method in another app? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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306 views

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ios - Size class to identify iPhone 6 and iPhone 6 plus portrait

How to uniquely identify iPhone 6 and iPhone 6 plus portrait screens using size classes? My App looks good in ... code through out the app? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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462 views

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ios - About CGAffineTransformMakeRotation rotation direction?

I'm trying to use CGAffineTransformMakeRotation, and I refer Apple document which says The angle, in radians, by ... , Thanks for the reply. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - swift 2.0 - UITextFieldDelegate protocol extension not working

I'm trying to add a default behavior on some UITextFieldDelegate's methods using protocol extensions like so : extension ... () // returns 0 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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364 views

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ios - The New iPad: Low Memory Warnings Not Appearing?

I have been developing an application for iPad that is very graphically intensive. I have been able to squeeze quite ... it needs to clean up?? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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270 views

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ios - Invalid parameter exception thrown by _UIQueuingScrollView

My app that contains a UITableViewController embedded in UIPageViewController raises this exception from time to time: ... reason could be? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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600 views

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ios - CFBundleVersion must be a period separated list of at most three non-negative integers (WARNING ITMS-9000)

I'm getting this warning when trying to submit my app: WARNING ITMS-9000: "This bundle is invalid. The value ... History" says nothing about it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Using presentViewController from UIView

I am creating a title bar for my iOS application and I am making this inside a UIView. The only issue I ... vc animated:NO completion:NULL]; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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308 views

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ios - Storyboard - setting delegates

Before storyboards I was able to set delegates and datasources just by dragging an outlet to a class. ... only connect them programmatically? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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456 views

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ios - Int to UInt (and vice versa) bit casting in Swift

I am looking for a direct way to bit cast the bit values of an Int to UInt and vice versa. For example ( ... . Does anyone have the better way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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245 views

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ios - How to clear font cache filled with emoji characters?

I am developing keyboard extension for iPhone. There is an emoji screen smilar to Apples own emoji keyboard that ... usage graph like this: See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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274 views

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ios - Use of external C++ headers in Objective-C

In my iOS project I need to use an external library written in C++. The C++ header files are all ... modifying these header files? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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296 views

1 answer

ios - Wanted: Up-to-date example for JSON/POST with basic auth using AFNetworking-2

I have a toy app which submits an https JSON/POST using basic auth security. I've been told I should consider ... and it gets through just fine. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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359 views

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ios - Duplicate symbols when integrating Firebase and Google Sign In SDKs manually without Cocoapods

I am getting duplicate symbols error when integrating Firebase and Google Sign In ... .o) /Projects/iOS/AddressBookGoogleMaps/AddressBookG...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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297 views

1 answer

ios - Developing universal in Xcode 6

I have Xcode 6 beta installed and I'm trying to develop an universal app. Before Xcode 6, you had to create 2 ... in Xcode 6 please? Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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696 views

1 answer

ios - Best way to get the ID of the last inserted row on SQLite

On iPhone, what's the best way to get the ID of the last inserted row on an SQLite Database using FMDB ? ... rather than doing : SELECT MAX(ID) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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618 views

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ios - Convert selectedTextRange UITextRange to NSRange

How can I convert a UITextRange object to an NSRange? I've seen plenty of SO posts about going the other ... UITextRange but I need a range. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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447 views

1 answer

ios - UIImage Aspect Fit when using drawInRect?

UIView provides for the "aspect fit" content mode. However, I've subclasses UIView and would like to draw ... without using a UIImageView? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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415 views

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ios - UITableView and presentViewController takes 2 clicks to display

I am using a UITableView to present a variety of viewControllers. Depending on which index is clicked, it ... super viewDidAppear:animated]; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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304 views

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ios - iPhone Push Notification Character Limit

I'm brand new to IOS push notifications. I have been reading about them and can't seem to find ... limitations of push notification payloads. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

380 views

1 answer

ios - Segue from one storyboard to a different storyboard?

I have too many views on one storyboard which is causing it to run really slow. I have been told that a ... in storyboard 2 via a button? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

281 views

1 answer

ios - Swift only way to prevent NSKeyedUnarchiver.decodeObject crash?

NSKeyedUnarchiver.decodeObject will cause a crash / SIGABRT if the original class is unknown. The only solution I have seen ... nil } //... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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516 views

1 answer

ios - How to change CAGradientLayer color points?

Right now I've got a GA Gradient layer where I've set the colors but I'd like to set the color point to ( ... on the left (what I'd like) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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340 views

1 answer

ios - Save file in document directory in swift 3?

I am saving files in a document directory in swift 3 with this code: fileManager = FileManager.default // let ... of crash in my code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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267 views

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ios - My app freezes but no error appears

Does any body know what I have to check if my app freezes? I mean, I can see the app in the iPad ... an explanation about how use the tools. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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522 views

1 answer

ios - NSData from Byte array in Swift

I'm trying to create an NSData var from an array of bytes. In Obj-C I might have done this: NSData * ... out a working equivalent in Swift. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

286 views

1 answer

ios - Add just a top border to an UIView with Quartzcore/layer?

Is it possible to add a border just on top of a UIView, if so, how please? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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398 views

1 answer

ios - How do I set a auto increment key in Realm?

I have a unique msgid for each ChatData object. @interface ChatData : RLMObject @property NSInteger msgid; . ... to replace this implementation? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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