Recent questions tagged iOS

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ios - How to get Core Data object from specific Object ID?

I can easily get an object's ID in Core Data using the following code: NSManagedObjectID *moID = [managedObject ... fetch request. 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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ios - Xcode: failed to get the task for process

I've run in release mode my app on a iPhone with Xcode 4. Everything worked great until when I switch to ... restart Xcode but nothing to do. 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 hide 'Back' button on navigation bar on iPhone?

I added a navigation control to switch between views in my app. But some of the views shouldn't have 'Back' ( ... how to hide the back button? 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 - Switching ViewControllers with UISegmentedControl in iOS5

I am trying something very simple but somehow I can't get it to work. All I try to do is switching ... towards a certain direction...? See Question&Answers more detail:os...

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

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649 views

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ios - CABasicAnimation resets to initial value after animation completes

I am rotating a CALayer and trying to stop it at its final position after animation is completed. But after ... suggestions how to achieve 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 - Multiline label in UIStackView

When putting multiline label (with linebreak set to Word Wrap) into a stack view, the label immediately loses the ... label within a stack 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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ios - How to invoke iPhone Maps for Directions with Current Location as Start Address

I know it's possible to start the iPhone maps application by calling openURL on a google maps URL with ... bookmark in place of myLatLong. 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 - Centering a view in its superview using Visual Format Language

I just started learning AutoLayout for iOS and had a look at Visual Format Language. It all works fine ... manually create a constraint 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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354 views

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ios - What's a simple way to get a text input popup dialog box on an iPhone

I want to get the user name. A simple text input dialog box. Any simple 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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ios - Updating to latest version of CocoaPods?

I'm having some issues installing Alamofire 4.0 into my project. I've got the latest version of Xcode, running ... sound like some other issue? See Question&Answers more detail:os...

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

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478 views

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ios - Programmatically go back to previous ViewController in Swift

I send the user over to a page on a button click. This page is a UITableViewController. Now if the user taps on ... is the correct way to do 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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424 views

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ios - Run iPhone as an iBeacon in the background

Is it possible to run an iOS 7 device as a Bluetooth LE peripheral (iBeacon) and have it advertise in the background? ... .rssi]]; break; } } } See Question&Answers more detail:os...

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

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578 views

1 answer

ios - How to print Boolean flag in NSLog?

Is there a way to print value of Boolean flag in NSLog? See Question&Answers more detail:os...

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

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403 views

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ios - "Too many symbol files" after successfully submitting my apps

I downloaded Xcode 6 GM and submitted two Swift apps to the app store today. Both passed all pre-upload ... wait to see what happens? See Question&Answers more detail:os...

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

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410 views

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ios - What does the NS prefix mean?

Many classes in Cocoa/Cocoa Touch have the NS prefix. What does it mean? See Question&Answers more detail:os...

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

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402 views

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ios - Facebook Get friends list

I know it have been asked a lot here, but I can't find a proper answer for that. I am using Facebook SDK ... for me on this. 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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405 views

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ios - How to resize table cell based on textview?

I have a UITextView in a custom UITableViewCell. The textview delegate is assigned in the tableviewcell custom class. ... this isn't working? 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 - Is it okay to leave out unnecessary launch images?

I have an app that supports only iPhones running iOS 10 or above. I added only the following images: ... discussed in this separate question. See Question&Answers more detail:os...

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

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757 views

1 answer

ios - tableview cell how do we resize cell in swift along with image and label

when we have a lable and image in tableview cell how do we resize cell in swift or lable as per the text in ... is cutting off how we resolve 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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368 views

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ios - Async request does not enter completion block

The following code is an attempt to me better understand [NSURLConnection sendAsynchronousRequest:queue:completionHandler]. ... return 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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504 views

1 answer

ios - Expected declaration error for making high score

I'm trying to make a little game, now I want to make it possible to see the high score of the ... Expected declaration. Thanks for the 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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419 views

1 answer

ios - Why is this code not recognising the NSString as being equal?

This is the code I have: NSLog(@"name: %@", name); NSLog(@"service: %@", service.name); if (name == ... NSLog. Any ideas why this could 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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643 views

1 answer

ios - dateFromString returns nil for some values

I am getting nil for some values while using dateFromString in swift. I searched a lot but in vain. Following is ... . Where am I getting wrong? See Question&Answers more detail:os...

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

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525 views

1 answer

ios - unique property in Firebase

I have an IOS app which contains categories. My storage on Firebase looks like this: -root -Categories -key ... in Firebase? 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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505 views

1 answer

ios - Xcode UI Testing Error keyboard

XCUIApplication *app = [[XCUIApplication alloc] init]; [app.buttons[@"Committee"] tap]; [app.buttons[@ ... failing enter image description here See Question&Answers more detail:os...

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

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452 views

1 answer

ios - Correct way to setting a tag to all cells in TableView

I'm using a button inside a tableView in which I get the indexPath.row when is pressed. But it only works fine ... of of cells in my tableView? See Question&Answers more detail:os...

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

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370 views

1 answer

ios - Battery-safe coding

I was wondering if there are some rules or hints how to prevent battery drain directly while coding. I ... service and internet connection? 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 - Missing Marketing Icon Xcode bug?

I've added a 1024 pt icon to the app as necessary. Here, it is on a screenshot: But when I try to ... Anybody know how to solve this issue?? See Question&Answers more detail:os...

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

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