class ImportantNews extends Component {     show: function(title) {         alert(title);     },     render: function() {         var news = [];         for (var i in this.props.news) {             var text = ( < Text style = {                     styles.news_list_item                 }                 onPress = {                     this.show.bind(this,                         this.props.news[i]                     )                 }                 numberOfLines = {                     1                 } > {                     this.props.news[i]                 } < /Text>             );             news.push(text);         }         return (             <View style={styles.news_list}>                 <Text style={styles.news_title}>今日要闻</Text>                 {news}             </View>         );     } }

报错的提示是：

看描述应该就是show()方法那里报错的呀，为啥会报错呢，不加onPress属性和show()方法就不会报错，加上就报错，哪儿错了？找了半天了！