HDC调试需求开发（15万预算）,能者速来！>>>
@vczero 你好，想跟你请教2个问题：
问题1：
React-Native报错和警告
总是报这个警告： Warning: Each child in an array or iterator should have a unique "key" prop. Check the...


下面是我根据您编写的《React Native 入门与实战》这本书上的一句一句敲的代码，请问这个怎么解决？ var List = React.createClass({ getInitialState: function(){ return{ count: 0 }; }, componentDidMount: function(){ var _that = this; AsyncStorage.getAllKeys(function(err,keys){ if (err) { } _that.setState({ count: keys.length }); }); }, render: function(){ var list = []; for (var i in Model) { if (i % 2 === 0) { var row = ( <View style = {styles.row}> <Item url = {Model[i].url} title = {Model[i].title} press = {this.press.bind(this, Model[i])}> </Item> <Item url = {Model[parseInt(i)+1].url} title = {Model[parseInt(i)+1].title} press = {this.press.bind(this, Model[parseInt(i)+1])}> </Item> </View> ); list.push(row); } } var count = this.state.count; var str = null; if (count) { str = '， 共' + count + '件商品'; } return( <ScrollView style = {{marginTop:10}}> {list} <Text onPress = {this.goPay} style = {styles.btn}>去结算{str}</Text> </ScrollView> ); }, goPay:function(){ this.props.navigator.push({ component: TestCtrl, title: '购物车' }); }, press: function(data){ var count = this.state.count; count++; this.setState({ count:count }); AsyncStorage.setItem('SP-'+this.genId()+'-SP', JSON.stringify(data),function(err){ if (err) { } }); }, genId:function(){ return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g,function(c){ var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8); return v.toString(16); }).toUpperCase(); }, });




问题2:
还有一个问题就是，我一个导航栏push到第三层就不能继续往下push了，报错 udefined is not an object(evaluating 'this.props.navigator.push ' )
报错截图如下：