Crashing on unblur() or blur(blurRadius: 0)

[aakashsrivastav]

Whenever I try to unblur a view by using view.unblur() or view.blur(blurRadius: 0) app crashes by throwing exception: fatal error: unexpectedly found nil while unwrapping an Optional value.

Here's the Stacktrace:

• thread Hiding & Unhiding Subviews not ideal #1: tid = 0x6679c, 0x0000000106a3fc50 libswiftCore.dylibfunction signature specialization <preserving fragile attribute, Arg[2] = Dead, Arg[3] = Dead> of Swift._fatalErrorMessage (Swift.StaticString, Swift.StaticString, Swift.StaticString, Swift.UInt, flags : Swift.UInt32) -> Swift.Never + 96, queue = 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0) frame #0: 0x0000000106a3fc50 libswiftCore.dylibfunction signature specialization <preserving fragile attribute, Arg[2] = Dead, Arg[3] = Dead> of Swift._fatalErrorMessage (Swift.StaticString, Swift.StaticString, Swift.StaticString, Swift.UInt, flags : Swift.UInt32) -> Swift.Never + 96

  • frame Hiding & Unhiding Subviews not ideal #1: 0x000000010538db49 TouchIDDemoLoginWithPasswordVC.(self=0x00007fd71fc094d0) -> ()).(closure #1).(closure #1) + 105 at LoginWithPasswordVC.swift:61 frame #2: 0x000000010538b067 TouchIDDemothunk + 39 at TouchIDVC.swift:0
    frame CocoaPods Support #3: 0x00000001092910cd libdispatch.dylib_dispatch_client_callout + 8 frame #4: 0x000000010926d16c libdispatch.dylib_dispatch_continuation_pop + 1091
    frame CocoaPods #5: 0x00000001092821de libdispatch.dylib_dispatch_source_latch_and_call + 195 frame #6: 0x000000010927ad79 libdispatch.dylib_dispatch_source_invoke + 1098
    frame Added Installation section #7: 0x0000000109271afc libdispatch.dylib_dispatch_main_queue_callback_4CF + 1006 frame #8: 0x0000000108ccae49 CoreFoundationCFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 9
    frame Seems slow #9: 0x0000000108c9037d CoreFoundation__CFRunLoopRun + 2205 frame #10: 0x0000000108c8f884 CoreFoundationCFRunLoopRunSpecific + 420
    frame swift 3 update #11: 0x000000010dd62a6f GraphicsServicesGSEventRunModal + 161 frame #12: 0x000000010700dc68 UIKitUIApplicationMain + 159
    frame Enhancement: Update for Swift 4 #13: 0x000000010539041f TouchIDDemomain + 111 at AppDelegate.swift:12 frame #14: 0x00000001092dd68d libdyld.dylibstart + 1

  thread Add Example #2: tid = 0x667e0, 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10 frame #0: 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10
  frame Hiding & Unhiding Subviews not ideal #1: 0x0000000109723791 libsystem_pthread.dylib_pthread_wqthread + 1426 frame #2: 0x00000001097231ed libsystem_pthread.dylibstart_wqthread + 13

  thread CocoaPods Support #3: tid = 0x667e1, 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10 frame #0: 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10
  frame Hiding & Unhiding Subviews not ideal #1: 0x0000000109723791 libsystem_pthread.dylib_pthread_wqthread + 1426 frame #2: 0x00000001097231ed libsystem_pthread.dylibstart_wqthread + 13

  thread Added a block to handle ios9 #4: tid = 0x667e2, 0x000000010960ce5a libsystem_kernel.dylibkevent_qos + 10, queue = 'com.apple.libdispatch-manager' frame #0: 0x000000010960ce5a libsystem_kernel.dylibkevent_qos + 10
  frame Hiding & Unhiding Subviews not ideal #1: 0x000000010928269f libdispatch.dylib_dispatch_mgr_wait_for_event + 79 frame #2: 0x000000010927c070 libdispatch.dylib_dispatch_mgr_invoke + 248
  frame CocoaPods Support #3: 0x000000010927be72 libdispatch.dylib`_dispatch_mgr_thread + 54

  thread CocoaPods #5: tid = 0x667e3, 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10 frame #0: 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10
  frame Hiding & Unhiding Subviews not ideal #1: 0x0000000109723791 libsystem_pthread.dylib_pthread_wqthread + 1426 frame #2: 0x00000001097231ed libsystem_pthread.dylibstart_wqthread + 13

  thread Installation section #6: tid = 0x667e4, 0x000000010960438a libsystem_kernel.dylibmach_msg_trap + 10, name = 'com.apple.uikit.eventfetch-thread' frame #0: 0x000000010960438a libsystem_kernel.dylibmach_msg_trap + 10
  frame Hiding & Unhiding Subviews not ideal #1: 0x00000001096037d7 libsystem_kernel.dylibmach_msg + 55 frame #2: 0x0000000108c90ba4 CoreFoundation__CFRunLoopServiceMachPort + 212
  frame CocoaPods Support #3: 0x0000000108c90021 CoreFoundation__CFRunLoopRun + 1345 frame #4: 0x0000000108c8f884 CoreFoundationCFRunLoopRunSpecific + 420
  frame CocoaPods #5: 0x0000000105486760 Foundation-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 274 frame #6: 0x000000010550e1b1 Foundation-[NSRunLoop(NSRunLoop) runUntilDate:] + 78
  frame Added Installation section #7: 0x0000000107a90741 UIKit-[UIEventFetcher threadMain] + 118 frame #8: 0x0000000105496654 FoundationNSThread__start + 1243
  frame Seems slow #9: 0x0000000109723aab libsystem_pthread.dylib_pthread_body + 180 frame #10: 0x00000001097239f7 libsystem_pthread.dylib_pthread_start + 286
  frame swift 3 update #11: 0x00000001097231fd libsystem_pthread.dylib`thread_start + 13

  thread Blur Background Image only #8: tid = 0x667f3, 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10 frame #0: 0x000000010960c4e2 libsystem_kernel.dylib__workq_kernreturn + 10
  frame Hiding & Unhiding Subviews not ideal #1: 0x0000000109723791 libsystem_pthread.dylib_pthread_wqthread + 1426 frame #2: 0x00000001097231ed libsystem_pthread.dylibstart_wqthread + 13

[davidseek]

same here. latest swift 3 and xcode. ios 10