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我有一个本机 iOS 模块突然不再暴露给 Javascript。我正在使用 RN 0.59.4。

似乎是在我重命名iOS项目之后发生的。

我能说的是我使用的是依赖注入，而不是 RCT_EXPORT_MODULE。

调用了模块初始化代码，我通过在requiresMainQueueSetup等关键区域设置断点进行了验证。

我想我的问题是：在哪些已知条件下模块可能不会暴露给 JavaScript？

任何帮助表示赞赏。

编辑 1：我已经将问题定位到 RCTCxxUtils::createNativeModules() ，它首先使用我的模块接收 105 个元素，但第二次调用时只有 104 个元素。

编辑 2：对于它的价值，这里是每个调用的回溯：

第一次调用 => 模块 = 帧 #0 中的 105 个元素

* thread #9, name = 'com.facebook.react.JavaScript', stop reason = breakpoint 3.1
  * frame #0: 0x0000000100c4e6d4 CardioSensys`facebook::react::createNativeModules(modules=105 elements, bridge=0x0000000102d14490, instance=std::__1::shared_ptr<facebook::react::Instance>::element_type @ 0x000000028100d7c0 strong=1 weak=1) at RCTCxxUtils.mm:39:3
    frame #1: 0x0000000100bcd840 CardioSensys`::-[RCTCxxBridge _buildModuleRegistryUnlocked](self=0x0000000102d14490, _cmd="_buildModuleRegistryUnlocked") at RCTCxxBridge.mm:520:10
    frame #2: 0x0000000100bceb84 CardioSensys`::-[RCTCxxBridge _initializeBridgeLocked:](self=0x0000000102d14490, _cmd="_initializeBridgeLocked:", executorFactory=std::__1::shared_ptr<facebook::react::JSExecutorFactory>::element_type @ 0x0000000283ae7058 strong=3 weak=1) at RCTCxxBridge.mm:573:36
    frame #3: 0x0000000100bce39c CardioSensys`::-[RCTCxxBridge _initializeBridge:](self=0x0000000102d14490, _cmd="_initializeBridge:", executorFactory=std::__1::shared_ptr<facebook::react::JSExecutorFactory>::element_type @ 0x0000000283ae7058 strong=3 weak=1) at RCTCxxBridge.mm:550:5
    frame #4: 0x0000000100bcb498 CardioSensys`::__21-[RCTCxxBridge start]_block_invoke.168(.block_descriptor=0x0000000283ae6dc0) at RCTCxxBridge.mm:344:5
    frame #5: 0x0000000100bdefa0 CardioSensys`decltype(__f=0x000000016fa15c58) block_pointer __strong&>(fp)()) std::__1::__invoke<void () block_pointer __strong&>(&&, decltype(std::__1::forward<void () block_pointer __strong&>(fp)())&&...) at type_traits:4361:1
    frame #6: 0x0000000100bdef3c CardioSensys`void std::__1::__invoke_void_return_wrapper<void>::__call<void (__args=0x000000016fa15c58) block_pointer __strong&>(void () block_pointer __strong&) at __functional_base:349:9
    frame #7: 0x0000000100bdef14 CardioSensys`std::__1::__function::__alloc_func<void () block_pointer __strong, std::__1::allocator<std::__1::allocator>, void ()>::operator(this=0x000000016fa15c60)() at functional:1527:16
    frame #8: 0x0000000100bdd6b8 CardioSensys`std::__1::__function::__func<void () block_pointer __strong, std::__1::allocator<std::__1::allocator>, void ()>::operator(this=0x000000016fa15c58)() at functional:1651:12
    frame #9: 0x00000001008722c0 CardioSensys`std::__1::__function::__value_func<void ()>::operator(this=0x000000016fa15c58)() const at functional:1799:16
    frame #10: 0x00000001008709dc CardioSensys`std::__1::function<void ()>::operator(this=0x000000016fa15c58)() const at functional:2347:12
    frame #11: 0x0000000100c4ed98 CardioSensys`facebook::react::tryAndReturnError(func=0x000000016fa15c58)> const&) at RCTCxxUtils.mm:72:7
    frame #12: 0x0000000100bc9e44 CardioSensys`::-[RCTCxxBridge _tryAndHandleError:](self=0x0000000102d14490, _cmd="_tryAndHandleError:", block=0x0000000100bcb434) at RCTCxxBridge.mm:257:20
    frame #13: 0x000000018d465690 Foundation`__NSThreadPerformPerform + 336
    frame #14: 0x000000018c96ff2c CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
    frame #15: 0x000000018c96feac CoreFoundation`__CFRunLoopDoSource0 + 88
    frame #16: 0x000000018c96f794 CoreFoundation`__CFRunLoopDoSources0 + 176
    frame #17: 0x000000018c96a6d0 CoreFoundation`__CFRunLoopRun + 1004
    frame #18: 0x000000018c969fc4 CoreFoundation`CFRunLoopRunSpecific + 436
    frame #19: 0x0000000100bc9c8c CardioSensys`::+[RCTCxxBridge runRunLoop](self=RCTCxxBridge, _cmd="runRunLoop") at RCTCxxBridge.mm:249:36
    frame #20: 0x000000018d4654a0 Foundation`__NSThread__start__ + 984
    frame #21: 0x000000018c5f92c0 libsystem_pthread.dylib`_pthread_body + 128
    frame #22: 0x000000018c5f9220 libsystem_pthread.dylib`_pthread_start + 44
    frame #23: 0x000000018c5fccdc libsystem_pthread.dylib`thread_start + 4

第二次调用 => 模块 = 帧 #0 中的 104 个元素

* thread #19, name = 'com.facebook.react.JavaScript', stop reason = breakpoint 3.1
  * frame #0: 0x0000000100c4e6d4 CardioSensys`facebook::react::createNativeModules(modules=104 elements, bridge=0x0000000102d1b8c0, instance=std::__1::shared_ptr<facebook::react::Instance>::element_type @ 0x000000028100e4e0 strong=1 weak=1) at RCTCxxUtils.mm:39:3
    frame #1: 0x0000000100bcd840 CardioSensys`::-[RCTCxxBridge _buildModuleRegistryUnlocked](self=0x0000000102d1b8c0, _cmd="_buildModuleRegistryUnlocked") at RCTCxxBridge.mm:520:10
    frame #2: 0x0000000100bceb84 CardioSensys`::-[RCTCxxBridge _initializeBridgeLocked:](self=0x0000000102d1b8c0, _cmd="_initializeBridgeLocked:", executorFactory=std::__1::shared_ptr<facebook::react::JSExecutorFactory>::element_type @ 0x0000000283909318 strong=3 weak=1) at RCTCxxBridge.mm:573:36
    frame #3: 0x0000000100bce39c CardioSensys`::-[RCTCxxBridge _initializeBridge:](self=0x0000000102d1b8c0, _cmd="_initializeBridge:", executorFactory=std::__1::shared_ptr<facebook::react::JSExecutorFactory>::element_type @ 0x0000000283909318 strong=3 weak=1) at RCTCxxBridge.mm:550:5
    frame #4: 0x0000000100bcb498 CardioSensys`::__21-[RCTCxxBridge start]_block_invoke.168(.block_descriptor=0x00000002834686c0) at RCTCxxBridge.mm:344:5
    frame #5: 0x0000000100bdefa0 CardioSensys`decltype(__f=0x000000016ff3dc58) block_pointer __strong&>(fp)()) std::__1::__invoke<void () block_pointer __strong&>(&&, decltype(std::__1::forward<void () block_pointer __strong&>(fp)())&&...) at type_traits:4361:1
    frame #6: 0x0000000100bdef3c CardioSensys`void std::__1::__invoke_void_return_wrapper<void>::__call<void (__args=0x000000016ff3dc58) block_pointer __strong&>(void () block_pointer __strong&) at __functional_base:349:9
    frame #7: 0x0000000100bdef14 CardioSensys`std::__1::__function::__alloc_func<void () block_pointer __strong, std::__1::allocator<std::__1::allocator>, void ()>::operator(this=0x000000016ff3dc60)() at functional:1527:16
    frame #8: 0x0000000100bdd6b8 CardioSensys`std::__1::__function::__func<void () block_pointer __strong, std::__1::allocator<std::__1::allocator>, void ()>::operator(this=0x000000016ff3dc58)() at functional:1651:12
    frame #9: 0x00000001008722c0 CardioSensys`std::__1::__function::__value_func<void ()>::operator(this=0x000000016ff3dc58)() const at functional:1799:16
    frame #10: 0x00000001008709dc CardioSensys`std::__1::function<void ()>::operator(this=0x000000016ff3dc58)() const at functional:2347:12
    frame #11: 0x0000000100c4ed98 CardioSensys`facebook::react::tryAndReturnError(func=0x000000016ff3dc58)> const&) at RCTCxxUtils.mm:72:7
    frame #12: 0x0000000100bc9e44 CardioSensys`::-[RCTCxxBridge _tryAndHandleError:](self=0x0000000102d1b8c0, _cmd="_tryAndHandleError:", block=0x0000000100bcb434) at RCTCxxBridge.mm:257:20
    frame #13: 0x000000018d465690 Foundation`__NSThreadPerformPerform + 336
    frame #14: 0x000000018c96ff2c CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
    frame #15: 0x000000018c96feac CoreFoundation`__CFRunLoopDoSource0 + 88
    frame #16: 0x000000018c96f794 CoreFoundation`__CFRunLoopDoSources0 + 176
    frame #17: 0x000000018c96a6d0 CoreFoundation`__CFRunLoopRun + 1004
    frame #18: 0x000000018c969fc4 CoreFoundation`CFRunLoopRunSpecific + 436
    frame #19: 0x0000000100bc9c8c CardioSensys`::+[RCTCxxBridge runRunLoop](self=RCTCxxBridge, _cmd="runRunLoop") at RCTCxxBridge.mm:249:36
    frame #20: 0x000000018d4654a0 Foundation`__NSThread__start__ + 984
    frame #21: 0x000000018c5f92c0 libsystem_pthread.dylib`_pthread_body + 128
    frame #22: 0x000000018c5f9220 libsystem_pthread.dylib`_pthread_start + 44
    frame #23: 0x000000018c5fccdc libsystem_pthread.dylib`thread_start + 4

编辑 3：第一次，我调用了 registerExtraModules，这是我的模块被添加的地方。第二次，不满足if 条件，因此没有添加额外的模块。

  if ([self.delegate respondsToSelector:@selector(extraModulesForBridge:)]) 

    {
        extraModules = [self.delegate extraModulesForBridge:_parentBridge];
      } else if (self.moduleProvider) {
        extraModules = self.moduleProvider();
      }

编辑 4：我必须在重命名之前回到项目并再次执行以解决我的问题。今天问题又回来了，这一次我添加了一个新的原生模块。

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1 回答 1

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好的，我已经解决了我的问题，只需在 Build Phase/Link Binary With Libraries 中重新排序链接库，清理和重建。

什么样的恶梦 ：（

于 2019-11-26T14:34:17.730 回答