Recent questions tagged iOS

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ios - NSTimer timerWithTimeInterval: not working

I've created a test application with timer before implementing it in my project. It was the first time I ... implementation ? 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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ios - How do I give an "identifier" to a view controller within my storyboard?

The instantiateViewControllerWithIdentifier: method requires that the view controller I pass have an identifier. I went to ... find this option? 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 - DTAssetProviderService could not start DTXConnection with Simulator

After updating to Xcode 7.3 I am not able to run my app in the iOS Simulator. On every attempt I am ... and due to incompatibility it crashed. 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 - Perform background tasks when app is terminated

I'm creating an application for my school which should check every n minutes if there is a new mark on the ... the task. 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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ios - NSURLConnection GET request returns -1005, "the network connection was lost"

I am trying to make a simple GET request using NSURLConnection in XCode 6 (Beta7 2) on iOS 8 SDK, which ... [5092:2074687] URLResponse: (null) 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 - Table view images never being released

I'm working on a major update to one of my applications and trying to cut down memory usage and making it ... label color, and background color. 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 - Swift Generics & Upcasting

I've got a quick question regarding generics in Swift. The problem is I'm trying to store a variable that ... help would be much appreciated! 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 adding image to a cell

I'm working on a project which uses UICollectionView to display data which may or may not have an image. ... really appreciate 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 - How to fill a UIBezierPath with a gradient?

I've drawn a graph using a UIBezierPath. I can fill the area under the graph with a solid color but ... , 0); CGGradientRelease(gradient); 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 - Swift countElements() return incorrect value when count flag emoji

let str1 = "????????????????????" let str2 = "????.????.????.????.????." println("( ... ? The bug seems only occurred when I use the flag emoji. See Question&Answers more detail:os...

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

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297 views

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ios - Add child view controller to current view controller

I am trying to add a child view controller in code, to the current view controller from storyboard by using ... tried that without any luck. 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 - AutoLayout + RTL + UILabel text alignment

I'm finally getting round to wrestling with Auto Layout and can't seem to figure out how to get right-to ... when using an RTL language? See Question&Answers more detail:os...

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

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191 views

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ios - post image to server in iphone

I want to post/share an image to server from the iphone. Image is ready to share. I am using the way the ... then post that stream to server ? See Question&Answers more detail:os...

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

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424 views

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ios - NSMutableURLRequest timeout interval not taken into consideration for POST requests

I have the following problem. On a NSMutableURLRequest using the HTTP method POST the timeout interval set for ... withDelegate:delegate]; ' See Question&Answers more detail:os...

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

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331 views

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ios - UITextField secureTextEntry bullets with a custom font?

I'm using a custom font in a UITextField, which has secureTextEntry turned on. When I'm typing in the cell, I ... the field is out of focus? See Question&Answers more detail:os...

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

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222 views

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ios - How to access file included in app bundle in Swift?

I know there are a few questions pertaining to this, but they're in Objective-C. How can I access a .txt ... happy to add details if necessary. See Question&Answers more detail:os...

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

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244 views

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ios - iPhone app under test crashes after a few days

I am new to making iPhone apps and this is my first attempt. I have made a simple app which has two buttons ... soon as possible. Thanks a lot! See Question&Answers more detail:os...

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

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383 views

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ios - -[UIApplication delegate] must be called from main thread only

This warning leads to a serious problem cause I really can't call the delegate outside of the main thread using Xcode ... the app to crash now? See Question&Answers more detail:os...

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

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469 views

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ios - iOS8 Photos Framework: How to get the name(or filename) of a PHAsset?

Im trying to get the image name using PHAssets. But I couldn't find metadata for filename or any method to get ... way to get the file name? See Question&Answers more detail:os...

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

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243 views

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ios - Positioning UITabBar at the top

I'm a beginner in iOS development. My question is: is it possible to position UITabBar at the top and how? I ... at the top of the 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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433 views

1 answer

ios - Using UIImagePickerController in landscape orientation

I am creating an app which is in landscape mode and I am using UIImagePickerController to take photos using ... to get desired functionality? 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

1 answer

ios - How do I stop my fixed navigation from moving like this when the virtual keyboard opens in Mobile Safari?

I understand that mobile safari has a lot of bugs around fixed elements, but for the most part I've managed ... the virtual keyboard is open. See Question&Answers more detail:os...

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

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260 views

1 answer

ios - Using ScrollView Programmatically in Swift 3

I have searched other questions and seem to still have some trouble creating my scrollView programmatically with autolayout in ... : 0) } } See Question&Answers more detail:os...

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

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350 views

1 answer

ios - Swift replace substring regex

I am attempting to use regular expression to replace all occurrences of UK car registrations within a string. The ... give me any pointers? See Question&Answers more detail:os...

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

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451 views

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ios - UIScreen MainScreen Bounds returning wrong size

So I created a new project with the latest version of XCode and tried to log the screen size of my app (to determine ... } else { return 2; } } 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

1 answer

ios - How to disable caching in Alamofire

When I send a GET request twice with Alamofire I get the same response but I'm expecting a different one. I was ... to know how to disable 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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464 views

1 answer

ios - UIImage imageNamed returns nil

I am pretty new to iOS and Xcode. I tried to load an image with [UIImage imageNamed:@"imageName.png/jpg ... to run the imageNamed method myself. See Question&Answers more detail:os...

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

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318 views

1 answer

ios - "Creating an image format with an unknown type is an error" with UIImagePickerController

While choosing an image from the image picker in iOS 10 Swift 3 I am getting an error - Creating an image format ... any other way to 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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