Question

我正在使用Picker native-base来实现React Native。我想要样式选择器，就像我在Android和iOS上发布的图片一样。但我不知道该如何设计样式。

enter image description here

Answer 1

安装npm库
https://www.npmjs.com/package/react-native-smooth-picker npm我的反应是原生选择器
您还可以从git存储库中进行检查 https://github.com/rdhox/react-native-smooth-picker

全局声明常量

import SmoothPicker from "react-native-smooth-picker";

const Bubble = props => {
  const { children, selected, horizontal } = props;
  return (
    <View
      style={[
        horizontal ? styles.itemStyleHorizontal : styles.itemStyleVertical,
        selected &&
          (horizontal
            ? styles.itemSelectedStyleHorizontal
            : styles.itemSelectedStyleVertical)
      ]}
    >
      <Text
        style={{
          textAlign: "center",
          fontSize: selected ? 20 : 17,
          color: selected ? "#006E4F" : "#006E4F",
          fontWeight: selected ? "bold" : "normal",          
        }}
      >
        {children}
      </Text>
    </View>
  );
};

添加render（）

<SmoothPicker
            initialScrollToIndex={selected}
            onScrollToIndexFailed={() => {}}
            keyExtractor={(_, index) => index.toString()}
            showsVerticalScrollIndicator={false}
            bounces={true}
            offsetSelection={40}
            scrollAnimation
            data={Array.from({ length: 15 }, (_, i) => 0 + i)}
            onSelected={({ item, index }) => this.handleChange(index)}
            renderItem={({ item, index }) => (
              <Bubble selected={index === selected}>{item}</Bubble>
            )}
          />

检查示例项目的样式，您需要进行一些修改。

const styles = StyleSheet.create({
  container: {
    paddingTop: 60,
    paddingBottom: 30,
    flex: 1,
    flexDirection: "column",
    justifyContent: "space-between",
    alignItems: "center",
    backgroundColor: "#F5FCFF"
  },
  wrapperHorizontal: {
    width: 300,
    height: 50,
    justifyContent: "center",
    alignItems: "center",
    margin: "auto",
    color: "black",
    marginBottom: 80
  },
  wrapperVertical: {
    width: 100,
    height: 300,
    justifyContent: "center",
    alignItems: "center",
    margin: "auto",
    color: "black"
  },
  itemStyleVertical: {
    justifyContent: "center",
    alignItems: "center",
    width: 50,
    height: 50,
    paddingTop: 0,
    borderWidth: 1,
    borderColor: "grey",
    borderRadius: 0,
    backgroundColor: "#D9F5ED"
  },
  itemSelectedStyleVertical: {
    paddingTop: 0,
    borderWidth: 2,
    borderColor: "#DAA520",
    justifyContent: "center",
    alignItems: "center",

    backgroundColor: "#D9F5ED"
  },
  itemStyleHorizontal: {
    justifyContent: "center",
    alignItems: "center",
    width: 50,
    height: 50,
    paddingTop: 0,
    borderWidth: 1,
    borderColor: "grey",
    borderRadius: 0,
    backgroundColor: "#D9F5ED"
  },
  itemSelectedStyleHorizontal: {
    paddingTop: 0,
    borderWidth: 2,
    borderColor: "#DAA520",
    justifyContent: "center",
    alignItems: "center",    
    backgroundColor: "#D9F5ED"
  }
});

Picker React Native的样式

1 个答案: