navigator跳转时出错

Question

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Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in.   Check the render method of `Navigator`.   instantiateReactComponent     instantiateReactComponent.js:88:8 instantiateChild     ReactChildReconciler.js:57:53 traverseAllChildrenImpl     traverseAllChildren.js:84:6 instantiateChildren     ReactChildReconciler.js:88:8 _reconcilerInstantiateChildren     ReactMultiChild.js:180:12 mountChildren                 ReactMultiChild.js:250:6 initializeChildren     ReactNativeBaseComponent.js:67:41 mountComponent     ReactNativeBaseComponent.js:169:6 mountComponent     ReactReconciler.js:58:6 performInitialMount     ReactCompositeComponent.js:519:6 mountComponent     ReactCompositeComponent.js:350:8 mountComponent     ReactReconciler.js:58:6 updateChildren     ReactChildReconciler.js:165:10 _reconcilerUpdateChildren     ReactMultiChild.js:212:10 _updateChildren     ReactMultiChild.js:353:6 updateChildren     ReactMultiChild.js:339:25 receiveComponent     ReactNativeBaseComponent.js:119:24 receiveComponent     ReactReconciler.js:159:38 _updateRenderedComponentWithNextElement     ReactCompositeComponent.js:1129:8 _updateRenderedComponent     ReactCompositeComponent.js:1100:6 _performComponentUpdate     ReactCompositeComponent.js:1036:36 updateComponent     ReactCompositeComponent.js:921:8 receiveComponent     ReactCompositeComponent.js:753:6 receiveComponent     ReactReconciler.js:159:38 updateChildren     ReactChildReconciler.js:144:10 _reconcilerUpdateChildren     ReactMultiChild.js:212:10 _updateChildren     ReactMultiChild.js:353:6 updateChildren     ReactMultiChild.js:339:25 receiveComponent     ReactNativeBaseComponent.js:119:24 receiveComponent     ReactReconciler.js:159:38 _updateRenderedComponentWithNextElement     ReactCompositeComponent.js:1129:8 _updateRenderedComponent     ReactCompositeComponent.js:1100:6 _performComponentUpdate     ReactCompositeComponent.js:1036:36 updateComponent     ReactCompositeComponent.js:921:8 receiveComponent     ReactCompositeComponent.js:753:6 receiveComponent     ReactReconciler.js:159:38 _updateRenderedComponentWithNextElement     ReactCompositeComponent.js:1129:8 _updateRenderedComponent     ReactCompositeComponent.js:1100:6 _performComponentUpdate     ReactCompositeComponent.js:1036:36 updateComponent     ReactCompositeComponent.js:921:8 performUpdateIfNecessary     ReactCompositeComponent.js:778:8 performUpdateIfNecessary     ReactReconciler.js:209:46 runBatchedUpdates     ReactUpdates.js:150:6 perform     Transaction.js:149:24 perform     Transaction.js:149:24 flushBatchedUpdates     ReactUpdates.js:168:24 closeAll     Transaction.js:222:29 perform     Transaction.js:163:24 batchedUpdatesWithControlledComponents     ReactGenericBatching.js:51:26 _receiveRootNodeIDEvent     ReactNativeEventEmitter.js:111:40 receiveTouches     ReactNativeEventEmitter.js:200:8 __callFunction     MessageQueue.js:244:47 <unknown>     MessageQueue.js:108:26 guard     MessageQueue.js:46:4 callFunctionReturnFlushedQueue     MessageQueue.js:107:10

Answer 1

仰慕傻瓜帮 2017-04-22 17:23:17

Navigator 中的 initialRoute 中的component 首字母要要小写，你大写了

• 提问者 嘉良 #1

  后来发现了，被编辑器提示坑了。非常感谢！

Answer 2

CrazyCodeBoy 2017-04-20 09:09:08

上面提示元素类型错误，你是不是忘记导出和导入组件了呢

• 提问者 嘉良 #1

  晚点回去把代码贴给你看看

• 提问者 嘉良 #2

  http://img1.sycdn.imooc.com/szimg//58f8a34d00012afd10341340.jpg
  http://img1.sycdn.imooc.com/szimg//58f8a34f0001599a11801148.jpg
  ​

Answer 3

提问者 嘉良 2017-04-20 20:04:26

找不到出错在哪里，麻烦看下