在Android上以调试模式运行Flutter应用。按“后退”按钮关闭应用程序，然后使用任务开关将其切换回该应用程序。然后进行热装。
flutter_tools将引发异常：
Exception from flutter run: NoSuchMethodError: Class 'NoSuchMethodError' has no instance method '[]'.
Receiver: Instance of 'NoSuchMethodError'
Tried calling: []("code")
答案 0 :(得分：1)
经过多次尝试，我以此解决了以上错误。
import React,{ Component } from 'react';
import { View, Text, StyleSheet, Platform } from 'react-native';
import { HeaderButtons, Item } from "react-navigation-header-buttons";
import HeaderButton from "../components/HeaderButton";
import { Avatar } from 'react-native-elements';
const OrderInformationScreen = props => {
return(
<View
style={{
height: 150,
backgroundColor: '#00BFFF',
alignItems: 'center',
justifyContent: 'center'
}}
>
<Avatar
size='large'
overlayContainerStyle={{ backgroundColor: '#00BFFF' }}
containerStyle={{ marginTop: 30 }}
activeOpacity={0.2}
rounded
source={('../assets/up.png')} style={{ height: 120, width: 120, borderRdius: 60 }}
/>
<Avatar
size='large'
overlayContainerStyle={{ backgroundColor: '#00BFFF' }}
containerStyle={{ marginTop: 30 }}
activeOpacity={0.2}
rounded
source={('../assets/down.png')} style={{ height: 120, width: 120, borderRdius: 60 }}
/>
<View>
<Text style={{ fontSize: 30 }}>Side Menu</Text>
</View>
</View>
);
};
const styles = StyleSheet.create({});
export default OrderInformationScreen
我希望这对某些人有帮助