Question

每当我召唤键盘并键入任何内容时，它都会崩溃

- [NSNull _fastCStringContents：]：无法识别的选择器发送到实例0x102bf4af0    *由于未捕获的异常终止应用＆＃39; NSInvalidArgumentException＆＃39;，原因：＆＃39; - [NSNull   _fastCStringContents：]：无法识别的选择器发送到实例0x102bf4af0＆＃39;   * 第一次抛出调用堆栈：（0 CoreFoundation 0x00000001029cfe65 exceptionPreprocess + 165 1 libobjc.A.dylib
  0x00000001037ffdeb objc_exception_throw + 48 2 CoreFoundation
  0x00000001029d848d - [NSObject（NSObject）doesNotRecognizeSelector：] +   205 3 CoreFoundation 0x000000010292590a   ___ forwarding _ + 970 4 CoreFoundation 0x00000001029254b8 _CF_forwarding_prep_0 + 120 5 CoreFoundation
  0x00000001029bbf23 - [NSTaggedPointerString   比较：选项：范围：locale：] + 243 6基础
  0x0000000102d62e37 - [NSString compare：options：range：] + 29 7 UIKit   0x0000000100ef6e6f - [UIPhysicalKeyboardEvent _matchesKeyCommand：] +   303 8 UIKit 0x0000000100e1b3fd    - [UIResponder _keyCommandForEvent：target：] + 364 9 UIKit 0x0000000100e1b5b2 - [UIResponder _keyCommandForEvent：target：] + 801     10 UIKit 0x0000000100e1b5b2    - [UIResponder _keyCommandForEvent：target：] + 801 11 UIKit 0x0000000100e1b5b2 - [UIResponder _keyCommandForEvent：target：] + 801     12 UIKit 0x0000000100e1b5b2    - [UIResponder _keyCommandForEvent：target：] + 801 13 UIKit 0x0000000100e1b5b2 - [UIResponder _keyCommandForEvent：target：] + 801     14 UIKit 0x0000000100e1b5b2    - [UIResponder _keyCommandForEvent：target：] + 801 15 UIKit 0x0000000100e1b5b2 - [UIResponder _keyCommandForEvent：target：] + 801     16 UIKit 0x0000000100e1b5b2    - [UIResponder _keyCommandForEvent：target：] + 801 17 UIKit 0x0000000100e1b5b2 - [UIResponder _keyCommandForEvent：target：] + 801     18 UIKit 0x0000000100e1b5b2    - [UIResponder _keyCommandForEvent：target：] + 801 19 UIKit 0x0000000100e1b5b2 - [UIResponder _keyCommandForEvent：target：] + 801     20 UIKit 0x0000000100e1b5b2    - [UIResponder _keyCommandForEvent：target：] + 801 21 UIKit 0x0000000100e1b5b2 - [UIResponder _keyCommandForEvent：target：] + 801     22 UIKit 0x0000000100c2d1aa    - [UIApplication handleKeyHIDEvent：] + 397 23 UIKit 0x0000000100c06838 _UIApplicationHandleEventQueue + 5469 24   CoreFoundation 0x00000001028fba31    CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17 25 CoreFoundation 0x00000001028f195c   __CFRunLoopDoSources0 + 556 26 CoreFoundation 0x00000001028f0e13 __CFRunLoopRun + 867 27 CoreFoundation
  0x00000001028f0828 CFRunLoopRunSpecific + 488 28图形服务
  0x0000000105a89ad2 GSEventRunModal + 161 29 UIKit
  0x0000000100c0c610 UIApplicationMain + 171 30 TMEF
  0x00000001007a2b6d main + 109 31 libdyld.dylib
  0x000000010434192d start + 1）libc ++ abi.dylib：终止于   NSException类型的未捕获异常

有什么建议吗？

Answer 1

我在这里找到答案：What is causing NSNull length unrecognized selector keyCommand error

基本上在导航堆栈的某个地方有一个包含这些行的故事板

  <keyCommands>
          <keyCommand/>
  </keyCommands>

在文本编辑器中打开您的故事板并搜索它。请注意，它可能不在故事板/场景中导致崩溃，而是在导航堆栈中使用的任何场景中。

键入

1 个答案: