React Native 学习之问题总结

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 Warning: React.createElement: type should not be null, undefined, boolean, or number. It should be a string (for DOM elements) or a ReactClass (for composite components). Check the render method of `Diary`.

 Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. Check the render method of `Diary`.

解决方法：在DiaryList中少写了module.exports=DiaryList;

_reactNative.StatusBarIOS.setHidden is not a function. (In '_reactNative.StatusBarIOS.setHidden(true)', '_reactNative.StatusBarIOS.setHidden' is undefined)

解决方法：将StatusBarIOS替换为StatusBar

Warning: setState(...): Cannot update during an existing state transition (such as within `render` or another component's constructor). Render methods should be a pure function of props and state; constructor side-effects are an anti-pattern, but can be moved to `componentWillMount`.

解决方法：在write文件中的返回的TouchableOpacity中的oppress函数的问题->将{()=>this.props.xxx}写成了{this.props.xxx}

Application ScrollViewTest has not been registered. This is either due to a require() error during initialization or failure to call AppRegistry.registerComponent.

解决方法：将控制台关了，一次只能开一个RN程序，不能同时多个RN程序运行。

null is not an object (evaluating 'this.state.userPickedName')

解决方法：将成员变量写在getInitialState函数里。