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iOS Build a Playlist Browser with Swift Using a Navigation Controller With Segues Using Navigation Controllers

Christine Rose
Christine Rose
6,745 Points
Posted by Christine Rose
Christine Rose
6,745 Points

Algorhythm App Crashing (???)

I've followed the video step-by-step, but my simulator is crashing at the Launch Screen. I haven't been able to test my segue action at all.

It builds quickly, but then it either gets stuck on the black screen for several minutes before I get a "lost connection" error message, or it crashes at the Launch Screen.

These are the errors in one of the several sections of errors:

2015-04-04 15:47:47.924 Algorhythm[14365:3110741] -[UIView setTitle:forState:]: unrecognized selector sent to instance 0x7f9deb4b3730 2015-04-04 15:47:47.979 Algorhythm[14365:3110741] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView setTitle:forState:]: unrecognized selector sent to instance 0x7f9deb4b3730' *** First throw call stack: ( 0 CoreFoundation 0x000000010520da75 exceptionPreprocess + 165 1 libobjc.A.dylib 0x0000000106d65bb7 objc_exception_throw + 45 2 CoreFoundation 0x0000000105214d1d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205 3 CoreFoundation 0x000000010516c9dc ___forwarding_ + 988 4 CoreFoundation 0x000000010516c578 CF_forwarding_prep_0 + 120 5 Algorhythm 0x000000010502c6d9 _TFC10Algorhythm28PlaylistMasterViewController11viewDidLoadfS0_FT_T + 1129 6 Algorhythm 0x000000010502c772 TToFC10Algorhythm28PlaylistMasterViewController11viewDidLoadfS0_FT_T + 34 7 UIKit 0x0000000105bc6580 -[UIViewController loadViewIfRequired] + 738 8 UIKit 0x0000000105bc677e -[UIViewController view] + 27 9 UIKit 0x0000000105ae5509 -[UIWindow addRootViewControllerViewIfPossible] + 58 10 UIKit 0x0000000105ae58a1 -[UIWindow setHidden:forced:] + 247 11 UIKit 0x0000000105af1f8c -[UIWindow makeKeyAndVisible] + 42 12 UIKit 0x0000000105a9c0c2 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 2732 13 UIKit 0x0000000105a9ee3e -[UIApplication _runWithMainScene:transitionContext:completion:] + 1349 14 UIKit 0x0000000105a9dd35 -[UIApplication workspaceDidEndTransaction:] + 179 15 FrontBoardServices 0x0000000108917243 __31-[FBSSerialQueue performAsync:]_block_invoke + 16 16 CoreFoundation 0x0000000105142c7c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK_ + 12 17 CoreFoundation 0x00000001051389c5 __CFRunLoopDoBlocks + 341 18 CoreFoundation 0x0000000105138785 __CFRunLoopRun + 2389 19 CoreFoundation 0x0000000105137bc6 CFRunLoopRunSpecific + 470 20 UIKit 0x0000000105a9d7a2 -[UIApplication _run] + 413 21 UIKit 0x0000000105aa0580 UIApplicationMain + 1282 22 Algorhythm 0x000000010502dbce top_level_code + 78 23 Algorhythm 0x000000010502dc0a main + 42 24 libdyld.dylib 0x0000000107541145 start + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException (lldb)

Christine Rose
Christine Rose
6,745 Points
Christine Rose
Christine Rose
6,745 Points

I put in a breakpoint because it doesn't seem to like this line:

aButton.setTitle("Press Me!", forState: .Normal)

It's complaining about the forState ... and that isn't turning a color, like Xcode doesn't recognize it as an attribute. Nothing pops up when I try to retype it as a suggestion, so I'm guessing that's the problem; however, I typed it exactly as he did in the video. I'm at a loss. . .