Tag: r

58 votes
10 answers
1.3K views
Is Xamarin free in Visual Studio 2015?

Currently I explore the Visual Studio 2015 RC and realized that Xamarin Studio is integrated into Visual Studi

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Elicia
0 1 0 9
asked 07 September, 2021
62 votes
21 answers
1.9K views
Add bottom border line to UI TextField view in SwiftUI / Swift / Objective-C / Xamarin

I would like to keep the border at the bottom part only in UITextField. But I don't know how we can keep

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Rudy
0 1 0 9
asked 07 September, 2021
55 votes
3 answers
2.1K views
What is the difference between Xamarin.Form's LayoutOptions, especially Fill and Expand?

In Xamarin.Forms every View has the two properties HorizontalOptions and VerticalOptions. Both are of type Lay

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Elicia
0 1 0 9
asked 07 September, 2021
63 votes
12 answers
2.4K views
Failed to find or create execution context for description <IBCocoaTouchPlatformToolDescription: 0x7fa8bad9a6f0>

I'm working on a project for iOS and I'm doing the programming with Visual Studios and it connects t

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Lynette
0 1 0 9
asked 07 September, 2021
51 votes
20 answers
1.3K views
Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE] even if app appears to not be installed

When trying to deploy my app to the Android device I am getting the following error: Deployment failed becaus

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Yolando
0 1 0 9
asked 07 September, 2021
61 votes
9 answers
2.2K views
What&apos;s the difference between .NET Core, .NET Framework, and Xamarin?

Microsoft now has .NET Core, .NET Framework and Xamarin (Mono) in its family. It seems to be a lot of overlap

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Patsy
0 1 0 9
asked 07 September, 2021
48 votes
7 answers
2.3K views
Convert UTF-8 encoded NSData to NSString

I have UTF-8 encoded NSData from windows server and I want to convert it to NSString for iPhone. Since data co

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Royal
0 1 0 9
asked 07 September, 2021
69 votes
26 answers
2.4K views
Presenting modal in iOS 13 fullscreen

In iOS 13 there is a new behaviour for modal view controller when being presented. Now it's not fullscre

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Joseph
0 1 0 9
asked 07 September, 2021
59 votes
6 answers
719 views
What are Unwind segues for and how do you use them?

iOS 6 and Xcode 4.5 has a new feature referred to as "Unwind Segue": Unwind segues can allow transitioning

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Leonardo
0 1 0 9
asked 07 September, 2021
67 votes
17 answers
1.4K views
How to tell if UIViewController&apos;s view is visible

I have a tab bar application, with many views. Is there a way to know if a particular UIViewController is curr

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Chelsea
0 1 0 9
asked 07 September, 2021
60 votes
9 answers
1.6K views
What does the NS prefix mean?

Many classes in Cocoa/Cocoa Touch have the NS prefix. What does it mean?

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Serina
0 1 0 9
asked 07 September, 2021
62 votes
6 answers
495 views
Send and receive messages through NSNotificationCenter in Objective-C?

I am attempting to send and receive messages through NSNotificationCenter in Objective-C. However, I haven&apo

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Tana
0 1 0 9
asked 07 September, 2021
63 votes
30 answers
1.5K views
Xcode 6 Bug: Unknown class in Interface Builder file

I upgraded to Xcode 6 beta 4 and now my App continuously crashes with the message Unknown class X in Inter

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Alba
0 1 0 9
asked 07 September, 2021
59 votes
30 answers
1.1K views
Attempt to present UIViewController on UIViewController whose view is not in the window hierarchy

Just started using Xcode 4.5 and I got this error in the console: Warning: Attempt to present < finishV

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Percy
0 1 0 9
asked 07 September, 2021
55 votes
30 answers
1K views
How do I test if a string is empty in Objective-C?

How do I test if an NSString is empty in Objective-C?

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Deedee
0 1 0 9
asked 07 September, 2021
63 votes
30 answers
372 views
This action could not be completed. Try Again (-22421)

I am trying to upload an Apple TV App to the App Store for testing purposes, but I got the issue: This Action

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Rudy
0 1 0 9
asked 07 September, 2021
70 votes
15 answers
1.7K views
Xcode 6: Keyboard does not show up in simulator

The keyboard does not show up when I run the simulator and click in the UITextView. How do I re-enable the key

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Omar
0 1 0 9
asked 07 September, 2021
54 votes
25 answers
2.4K views
How to link to apps on the app store

I am creating a free version of my iPhone game. I want to have a button inside the free version that takes peo

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Suzan
0 1 0 9
asked 07 September, 2021
53 votes
30 answers
736 views
Placeholder in UITextView

My application uses an UITextView. Now I want the UITextView to have a placeholder similar to the one you can

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Corey
0 1 0 9
asked 07 September, 2021
53 votes
20 answers
725 views
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?

Is there a way to call a block with a primitive parameter after a delay, like using performSelector:withObject

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Xavier
0 1 0 9
asked 07 September, 2021