我正在尝试进行某种测验,并且我希望将所有框都放在 FlatList 中。我希望所有这些都被隐藏,除了第一个,当你回答它时,下一个问题就会出现。这是我的代码:
const TYPE = [{id:"1",title:"first question",options:["option 1","option 2"],correct:1},{id:"2",title:"secondquestion",options:["option 1","option 2"],correct:0}];
const answer=a=>Alert.alert(a == 0 ? 'wrong' : 'correct');
const Item = ({info}) => (
<View style={styles.item}>
<Text style={styles.title}>
{info.title}
</Text>
<TouchableOpacity style={styles.button} onPress={() => info.correct == 0 ? answer(1) : answer(0)}>
<Text>
{info.options[0]}
</Text>
</TouchableOpacity>
<TouchableOpacity style={styles.button} onPress={() => info.correct == 1 ? answer(1) : answer(0)}>
<Text>
{info.options[1]}
</Text>
</TouchableOpacity>
</View>
);
function HomeScreen({ navigation }) {
return (
<View style={styles.homescreen}>
<Text style={styles.homeTitle}>
Welkom!
</Text>
<Text style={styles.homeIntro}>
Play the test, yes?
</Text>
<TouchableOpacity style={styles.homeButton} onPress={() => navigate(navigation, "Type")}>
<Text style={styles.homeButtonText}>
Start the Test!
</Text>
</TouchableOpacity>
</View>
)
}
function type() {
const renderItem = ({ item }) => <Item info={item} />;
return (
<View style={styles.container}>
<FlatList
data={TYPE}
renderItem={renderItem}
keyExtractor={item => item.id}
style={styles.list}
/>
<StatusBar style="auto" />
</View>
);
}
export default function App() {
console.log("Starting...");
return (
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen name="Home" component={HomeScreen} />
<Stack.Screen name="Type" component={type} />
</Stack.Navigator>
</NavigationContainer>
)
}
我的方法是将所有 s 添加到一个数组中,这样我就可以简单地执行此操作:itemArray[i].style.display='None'
或类似的操作。