Xcode 8 Beta - Simulator won't write to NSUserDefaults

Question

Sergey OP

Created Jun ’16

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Is anyone seeing this as well?

If I run a simple app (just create a Single View Application) in an iPhone 6s Simulator (10), NSUserDefaults won't work.

Example code:

NSUserDefaults* userDefaults = [NSUserDefaults standardUserDefaults];

NSString* testString = @"Test";

NSData* testData = [testString dataUsingEncoding:NSUTF8StringEncoding];

[userDefaults setObject:testData forKey:@"test"];

[userDefaults synchronize];

NSData* retrievedData = [userDefaults objectForKey:@"test"];

At the end retrievedData is nil

I am inclined to create a radar for this, but maybe I am doing something wrong... ?

Boost

Answer 1

salling OP

Jun ’16

From the release notes:

WWDC Seed: Running multiple iOS simulators can cause NSUserDefaults to not work

Running an iOS 8 or 9 simulator followed by an iOS 10 simulator will cause NSUserDefaults to stop working in the simulator. This can be worked around by rebooting the host Mac.

0

Answer 2

ForumsContributor OP

Jun ’16

Thanks for that. I can confirm it worked for me.

Looks like this issue was reported in a WWDC release of XCode, it does NOT appear to be in the just-released beta release notes:

http://adcdownload.apple.com/WWDC_2016/Xcode_8_beta/Release_Notes_for_Xcode_8_beta.pdf