为什么不显示下拉框颜色

Question

在这里，我使用了native-picker作为下拉列表。但是css不适用于picker这里是图片

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import { Picker } from '@react-native-picker/picker';

<Picker style = { styles.coloring}>
    <Picker.Item label="Java" value="java" />
    <Picker.Item label="JavaScript" value="js" />
</Picker>

const styles = StyleSheet.create({
 coloring: {
   borderWidth:1,
   borderColor: '#0095ff87',
   width: '100%',
   height :40,
 }

Answer 1

您可以将Picker放在视图中，并为视图提供如下边框：

<View
  style={{
    borderWidth: 1,
    borderRadius: 5,
    borderColor: '#0095ff87',
  }}>
 <Picker style = { styles.coloring}>
     <Picker.Item label="Java" value="java" />
     <Picker.Item label="JavaScript" value="js" />
 </Picker>
</View>