错误React Native IOS异常'-[__NSDictionaryM length]：发送到无法识别的选择器

Question

我是 IOS 开发的新手，我已经在 React Native 中开发并构建了一个适用于 IOS 和 Android 的应用程序，并且该应用程序在 Android 中完全运行。我还在 iPhone 模拟器上安装了该应用程序进行测试，成功构建后，当应用程序打开时，它会崩溃，并且 Xcode 显示错误堆栈。

堆栈跟踪

2018-03-26 17:18:59.537548+0530 VwWoocommerceAppMain[57934:681649] -[__NSDictionaryM length]: unrecognized selector sent to instance 0x60000023abc0
2018-03-26 17:18:59.555 [fatal][tid:com.facebook.react.AsyncLocalStorageQueue] Exception '-[__NSDictionaryM length]: unrecognized selector sent to instance 0x60000023abc0' was thrown while invoking multiSet on target AsyncLocalStorage with params (
        (
                (
            cart,
                        {
            }
        )
    ),
    5873
)
callstack: (
	0   CoreFoundation                      0x0000000103f8212b __exceptionPreprocess + 171
	1   libobjc.A.dylib                     0x0000000102874f41 objc_exception_throw + 48
	2   CoreFoundation                      0x0000000104003024 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
	3   CoreFoundation                      0x0000000103f04f78 ___forwarding___ + 1432
	4   CoreFoundation                      0x0000000103f04958 _CF_forwarding_prep_0 + 120
	5   VwWoocommerceAppMain                0x0000000101956824 -[RCTAsyncLocalStorage _writeEntry:changedManifest:] + 258
	6   VwWoocommerceAppMain                0x0000000101957104 -[RCTAsyncLocalStorage multiSet:callback:] + 436
	7   CoreFoundation                      0x0000000103f0636c __invoking___ + 140
	8   CoreFoundation                      0x0000000103f06240 -[NSInvocation invoke] + 320
	9   CoreFoundation                      0x0000000103f1ec26 -[NSInvocation invokeWithTarget:] + 54
	10  VwWoocommerceAppMain                0x0000000101966929 -[RCTModuleMethod invokeWithBridge:module:arguments:] + 602
	11  VwWoocommerceAppMain                0x00000001019ac7a8 _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicE + 266
	12  VwWoocommerceAppMain                0x00000001019ac522 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 78
	13  libdispatch.dylib                   0x0000000108bf32f7 _dispatch_call_block_and_release + 12
	14  libdispatch.dylib                   0x0000000108bf433d _dispatch_client_callout + 8
	15  libdispatch.dylib                   0x0000000108bfc855 _dispatch_queue_serial_drain + 1162
	16  libdispatch.dylib                   0x0000000108bfd1ea _dispatch_queue_invoke + 336
	17  libdispatch.dylib                   0x0000000108bf8f7c _dispatch_queue_override_invoke + 733
	18  libdispatch.dylib                   0x0000000108c00102 _dispatch_root_queue_drain + 772
	19  libdispatch.dylib                   0x0000000108bffda0 _dispatch_worker_thread3 + 132
	20  libsystem_pthread.dylib             0x00000001091465a2 _pthread_wqthread + 1299
	21  libsystem_pthread.dylib             0x000000010914607d start_wqthread + 13
)
2018-03-26 17:18:59.558030+0530 VwWoocommerceAppMain[57934:681649] Exception '-[__NSDictionaryM length]: unrecognized selector sent to instance 0x60000023abc0' was thrown while invoking multiSet on target AsyncLocalStorage with params (
        (
                (
            cart,
                        {
            }
        )
    ),
    5873
)
callstack: (
	0   CoreFoundation                      0x0000000103f8212b __exceptionPreprocess + 171
	1   libobjc.A.dylib                     0x0000000102874f41 objc_exception_throw + 48
	2   CoreFoundation                      0x0000000104003024 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
	3   CoreFoundation                      0x0000000103f04f78 ___forwarding___ + 1432
	4   CoreFoundation                      0x0000000103f04958 _CF_forwarding_prep_0 + 120
	5   VwWoocommerceAppMain                0x0000000101956824 -[RCTAsyncLocalStorage _writeEntry:changedManifest:] + 258
	6   VwWoocommerceAppMain                0x0000000101957104 -[RCTAsyncLocalStorage multiSet:callback:] + 436
	7   CoreFoundation                      0x0000000103f0636c __invoking___ + 140
	8   CoreFoundation                      0x0000000103f06240 -[NSInvocation invoke] + 320
	9   CoreFoundation                      0x0000000103f1ec26 -[NSInvocation invokeWithTarget:] + 54
	10  VwWoocommerceAppMain                0x0000000101966929 -[RCTModuleMethod invokeWithBridge:module:arguments:] + 602
	11  VwWoocommerceAppMain                0x00000001019ac7a8 _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicE + 266
	12  VwWoocommerceAppMain                0x00000001019ac522 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 78
	13  libdispatch.dylib                   0x0000000108bf32f7 _dispatch_call_block_and_release + 12
	14  libdispatch.dylib                   0x0000000108bf433d _dispatch_client_callout + 8
	15  libdispatch.dylib                   0x0000000108bfc855 _dispatch_queue_serial_drain + 1162
	16  libdispatch.dylib                   0x0000000108bfd1ea _dispatch_queue_invoke + 336
	17  libdispatch.dylib                   0x0000000108bf8f7c _dispatch_queue_override_invoke + 733
	18  libdispatch.dylib                   0x0000000108c00102 _dispatch_root_queue_drain + 772
	19  libdispatch.dylib                   0x0000000108bffda0 _dispatch_worker_thread3 + 132
	20  libsystem_pthread.dylib             0x00000001091465a2 _pthread_wqthread + 1299
	21  libsystem_pthread.dylib             0x000000010914607d start_wqthread + 13
)
2018-03-26 17:18:59.561965+0530 VwWoocommerceAppMain[57934:681649] *** Terminating app due to uncaught exception 'RCTFatalException: Exception '-[__NSDictionaryM length]: unrecognized selector sent to instance 0x60000023abc0' was thrown while invoking multiSet on target AsyncLocalStorage with params (
        (
                (
            cart,
                        {
            }
        )
    ),
    5873
)
callstack: (
	0   CoreFoundation                      0x0000000103f8212b __exceptionPreprocess + 171
	1   libobjc.A.dylib                     0x0000000102874f41 objc_exception_throw + 48
	2   CoreFoundation                      0x0000000104003024 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
	3   CoreFoundation                      0x0000000103f04f78 ___forwarding___ + 1432
	4   CoreFoundation                      0x0000000103f04958 _CF_forwarding_prep_0 + 120
	5   VwWoocommerceAppMain                0x0000000101956824 -[RCTAsyncLocalStorage _writeEntry:changedManifest:] + 258
	6   VwWoocommerceAppMain                0x0000000101957104 -[RCTAsyncLocalStorage multiSet:callback:] + 436
	7   CoreFoundation                      0x0000000103f0636c __invoking___ + 140
	8   CoreFoundation                      0x0000000103f06240 -[NSInvocation invoke] + 320
	9   CoreFoundation                      0x0000000103f1ec26 -[NSInvocation invokeWithTarget:] + 54
	10  VwWoocommerceAppMain                0x0000000101966929 -[RCTModuleMethod invokeWithBridge:module:arguments:] + 602
	11  VwWoocommerceAppMain                0x00000001019ac7a8 _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicE + 266
	12  VwWoocommerceAppMain                0x00000001019ac522 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 78
	13  libdispatch.dylib                   0x0000000108bf32f7 _dispatch_call_block_and_release + 12
	14  libdispatch.dylib                   0x0000000108bf433d _dispatch_client_callout + 8
	15  libdispatch.dylib                   0x0000000108bfc855 _dispatch_queue_serial_drain + 1162
	16  libdispatch.dylib                   0x0000000108bfd1ea _dispatch_queue_invoke + 336
	17  libdispatch.dylib                   0x0000000108bf8f7c _dispatch_queue_override_invoke + 733
	18  libdispatch.dylib                   0x0000000108c00102 _dispatch_root_queue_drain + 772
	19  libdispatch.dylib                   0x0000000108bffda0 _dispatch_worker_thread3 + 132
	20  libsystem_pthread.dylib             0x00000001091465a2 _pthread_wqthread + 1299
	21  libsystem_pthread.dylib             0x000000010914607d start_wqthread + 13
)', reason: 'Exception '-[__NSDictionaryM length]: unrecognized selector sent to instanc...'
*** First throw call stack:
(
	0   CoreFoundation                      0x0000000103f8212b __exceptionPreprocess + 171
	1   libobjc.A.dylib                     0x0000000102874f41 objc_exception_throw + 48
	2   VwWoocommerceAppMain                0x0000000101953a22 RCTFormatError + 0
	3   VwWoocommerceAppMain                0x00000001019ac9bc _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicE + 798
	4   VwWoocommerceAppMain                0x00000001019ac522 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 78
	5   libdispatch.dylib                   0x0000000108bf32f7 _dispatch_call_block_and_release + 12
	6   libdispatch.dylib                   0x0000000108bf433d _dispatch_client_callout + 8
	7   libdispatch.dylib                   0x0000000108bfc855 _dispatch_queue_serial_drain + 1162
	8   libdispatch.dylib                   0x0000000108bfd1ea _dispatch_queue_invoke + 336
	9   libdispatch.dylib                   0x0000000108bf8f7c _dispatch_queue_override_invoke + 733
	10  libdispatch.dylib                   0x0000000108c00102 _dispatch_root_queue_drain + 772
	11  libdispatch.dylib                   0x0000000108bffda0 _dispatch_worker_thread3 + 132
	12  libsystem_pthread.dylib             0x00000001091465a2 _pthread_wqthread + 1299
	13  libsystem_pthread.dylib             0x000000010914607d start_wqthread + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 

如果有人知道请帮忙。

Answer 1

在保存数据时，无论您的数据是什么，AsyncStorage始终使用：JSON.stringify

AsyncStorage.setItem('@key', 'will work on Android'))
AsyncStorage.setItem('@key', JSON.stringify('will work on both iOS and Android'))