Recent questions tagged IOS

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ios - How can I determine file size on disk of a video PHAsset in iOS8

I can request a video PHAsset using the Photos framework in iOS8. I'd like to know how big the file ... (Using Photos framework not required) See Question&Answers more detail:os...

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

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370 views

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ios - Objective-C: how to group a series of string constants?

I defined a series of string constants like below, in macro way, #define EXT_RESULT_APPID @"appid" #define ... these related string constants? See Question&Answers more detail:os...

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

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360 views

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ios - UIScrollView Not Scrolling?

I have a UIScrollView created in interface builder with a bunch of UITextView and UIImageView objects already added. ... cause of this behavior? 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 - how to understand Crash Log of iPhone

i only know it Crash not run out of memory. how did i know which it cause of error? Incident Identifier: ... > /usr/lib/libbsm.0.dylib See Question&Answers more detail:os...

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

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662 views

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ios - Does the List in SwiftUI reuse cells similar to UITableView?

I am working on creating a dynamic list using SwiftUI. Does the SwiftUI List container reuse the cells similar to UITableView? See Question&Answers more detail:os...

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

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429 views

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ios - How to add sound files to your bundle in Xcode?

I am trying to make an application with sound. I have asked a question before how to add sound to an app ... help that would be great! 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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385 views

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ios - How to preview Storyboard in Xcode using Non-Base localisation

I have a Storyboard in Xcode 5.1 with a base Localization of English, and a second Localization in French. ... works in different languages.. See Question&Answers more detail:os...

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

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470 views

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ios - Swift: Crop and Export Video

I want to crop a video to square, but i couldn't do that. I converted this code to swift but i only ... outputURL = exportUrl What am i missing? See Question&Answers more detail:os...

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

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425 views

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ios - How to turn flashlight on/off using one button?

I can turn my flashlight on with one button and turn it off with another. But I want to do it with ... flashlight right now is overly complex. See Question&Answers more detail:os...

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

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432 views

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ios - Xcode 9 doesn't have any simulator device

I just downloaded xcode 9 beta, but there is no simulator within it. Try to add new simulator but the create ... the create button doesn't work See Question&Answers more detail:os...

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

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468 views

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ios - UIDatePicker leaks

I appear to have a leaky UIDatePicker. I have noted memory leaks for setting the datePickerMode to show date ... Does anyone have a workaround? See Question&Answers more detail:os...

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

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378 views

1 answer

ios - How to use predicates with fetchRequest in Core Data

I pass a contact Identifier from Contacts tableview controller to another Location tableview controller. So I define a ... continue } } } } See Question&Answers more detail:os...

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

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763 views

1 answer

ios - How to use UITextView in UIAlertController

I created a popup alert using alert controller and added two alert actions(ok and cancel) as below. UIAlertController ... add it. Please advice. See Question&Answers more detail:os...

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

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547 views

1 answer

ios - Cocoapods - Unable to find a Specification for [Github framework]

When trying to pod install a new Podfile into an existing Xcode (iOS) project, I get the following error message ... of such a file would 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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433 views

1 answer

ios - Sorting NSFetchedResultsController by Swift Computed Property on NSManagedObjectSubclass

I'm building an app using Swift with Core Data. At one point in my app, I want to have a ... of an NSManagedObject subclass in Swift? See Question&Answers more detail:os...

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

0 votes

593 views

1 answer

ios - Loading local images into WKWebView

I'm trying to get WKWebView to display locally downloaded images in a WKWebView. The webview normally displays HTML, ... course of action here? See Question&Answers more detail:os...

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

0 votes

457 views

1 answer

ios - problems with animation when deleting the last row of a TableView in ios7

I'm having some issues when deleting the last row of my (only) section in my tableView. Any other row works ... 't think that's the problem. See Question&Answers more detail:os...

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

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426 views

1 answer

ios - Uploading screenshots to iTunes connect for iPhone 6 and 6+

I'm trying to upload screenshots of my app on iPhone 6 and 6+ and I'm getting a baffling error message: ... properties below. What am I missing? See Question&Answers more detail:os...

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

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501 views

1 answer

ios - Keypath <transientproperty> not found in entity

I want to show a formatted date in the section header of a table view.. I used the following code.but its ... release]; } return tempDate; } See Question&Answers more detail:os...

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

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545 views

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ios - Universal link - The domain has some validation issue

Im working on universal link to open the application while tap the url. I am using https server and done all ... t know what it mean exactly. See Question&Answers more detail:os...

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

0 votes

453 views

1 answer

ios - How can I add file to project in Xcode 9?

I created a new project in xcode 9. I want to add image file to project. When I delete this file from desktop ... 8 its working fine, Any idea? See Question&Answers more detail:os...

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

0 votes

599 views

1 answer

ios - How to make zoom in zoom out button animation on tap gesture in SwiftUI?

Simple and regular approach to animate a bump effect for a button but not simple in SwiftUI. I'm trying to change ... , touchEnd: touchEnd)) } } See Question&Answers more detail:os...

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

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489 views

1 answer

ios - How can I detect if my apple device supports Bluetooth Low Energy

Is there an API via which I can tell if the Apple device (iPad/iPod/iPhone) that my App is running on supports Bluetooth Low Energy (BTLE). See Question&Answers more detail:os...

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

0 votes

478 views

1 answer

ios - Creating webViews programmatically in Swift

I want to create something like an image gallery in my ViewController. For this, I'd need multiple webViews, ... if necessary? Is it possible? See Question&Answers more detail:os...

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

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508 views

1 answer

ios - ARKit Unable to run the session, configuration is not supported on this device

Using ARWorldTrackingSessionConfiguration get and error on iPhone 6 plus Unable to run the session, configuration is not ... What can it be? See Question&Answers more detail:os...

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

0 votes

584 views

1 answer

ios - Add separator between section in TabBar

I have to add separator between section in TabBar as in image below: I tried to set the background image for ... with any advice ? Thanks ! See Question&Answers more detail:os...

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

0 votes

582 views

1 answer

ios - Undefined symbols for architecture i386: "_OBJC_CLASS_$_MFMailComposeViewController"

I train in the creation of programs for the iPhone using MFMailComposeViewController. However, an error occurs when ... ? Thanks in advance! See Question&Answers more detail:os...

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

0 votes

477 views

1 answer

ios - How to load all views in UITabBarController?

I have not found relevant and up to date answers in the posts related to this question. I would like to load all ... do that is Swift ? 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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