首页 > 解决方案 > React Native - 为形状创建弯曲边缘

问题描述

问题总结

我正在构建的应用程序有以下底部导航栏,但我不确定如何设置它的样式,因为它比我过去设计的任何样式都复杂。我在设计白色部分的弯曲顶部边缘以及蓝色/绿色圆圈和白色部分之间的区域时遇到问题。

我包括了模型中导航栏的外观,因为其中一个似乎融入其中。绿色/蓝色圆圈和白色部分之间的白色部分上方的黑色背景不应使用此导航栏设置样式,应该成为导航栏后面看到的背景。

任何帮助将不胜感激!

导航栏示例 摘要代码

  <View style={styles.container}>
  </View>

container: {
    width: windowWidth,
    height: windowHeight * 0.1020935961,
    backgroundColor: "white",
    flexDirection: "row",
    justifyContent: "space-around",
    borderTopLeftRadius: -50,
    borderTopRightRadius: -50
  }

完整代码

const CustomTabNav = () => (
  <View style={styles.container}>
    <TouchableOpacity
      style={styles.instant}
      onPress={() => {
        NavigationService.navigate("Home");
      }}
    >
      <Image
        style={styles.homeImage}
        source={require("~/assets/images/homeIcon.png")}
      />
    </TouchableOpacity>
    <TouchableOpacity
      style={styles.ovalCopy}
      onPress={() => NavigationService.navigate("Competitions")}
    >
      <LinearGradient
        start={{ x: 0, y: 1 }}
        end={{ x: 1, y: 0 }}
        colors={[buttonGradientBlueColor, buttonGradientGreenColor]}
        style={styles.linearGradient}
      >
        <Image
          style={styles.plusImage}
          source={require("~/assets/images/plus.png")}
        />
      </LinearGradient>
    </TouchableOpacity>
    <TouchableOpacity
      style={styles.instant}
      onPress={() => NavigationService.navigate("Competitions")}
    >
      <Image
        style={styles.instantImage}
        source={require("~/assets/images/competitions.png")}
      />
    </TouchableOpacity>
  </View>
);

const styles = StyleSheet.create({
  container: {
    width: windowWidth,
    height: windowHeight * 0.1020935961,
    backgroundColor: "white",
    flexDirection: "row",
    justifyContent: "space-around",
    borderTopLeftRadius: -50,
    borderTopRightRadius: -50
  },
  homeImage: {
    width: windowWidth * 0.05,
    height: windowWidth * 0.05
  },
  instant: {
    flexDirection: "column",
    // alignSelf: 'center',
    justifyContent: "center"
  },
  instantImage: {
    width: windowWidth * 0.05,
    height: windowWidth * 0.05
  },
  ovalCopy: {
    width: 64,
    height: 64,
  },
  linearGradient: {
    borderRadius: 50, //TODO: make sure this is correct
    width: 64,
    height: 64,
    shadowColor: "#0a0b12cc",
    shadowOffset: {
      width: 0,
      height: -10
    },
    shadowRadius: 60,
    shadowOpacity: 1,
    alignItems: 'center',
    justifyContent: 'center'
  },
  plusImage: {
    width: windowWidth*0.064,
    height: windowWidth*0.064
  }
});

标签: javascriptcssreactjsreact-native

解决方案


嘿,我想你可以用一种艰难的方式来做到这一点,比如制作一张背景图片来获得弯曲的白色背景。或者,您可以将 2 个“黑灰色”视图叠加在一个白色视图之上。第一个“黑灰色”可能是一个带有令人难以置信的大边框半径,第二个是 100% 的圆形,比 + 按钮稍大。这就是我的意思:

<View style={{ flex: 1, backgroundColor:"white",height: HEIGHT ,width:WIDTH, alignItems: 'center', justifyContent: 'flex-start' }}>
            <View style={{ backgroundColor:"black",borderBottomLeftRadius:WIDTH*10,borderBottomRightRadius:WIDTH*10,height: HEIGHT*.6 ,width:WIDTH*2, alignItems: 'center', justifyContent: 'center' }}>
</View>
            <View style={{ backgroundColor:"black",borderRadius:60,height: 120 ,width:120, marginTop:-60,alignItems: 'center', justifyContent: 'center' }}>
                <View style={{ backgroundColor:"white",borderRadius:40,height: 80 ,width:80 ,alignItems: 'center', justifyContent: 'center' }}>
                    <Icon name="chevron-left" size={30} />
                </View>
            </View>
            <View style={{ backgroundColor:"transparent",height: 120 ,width:WIDTH, marginTop:-60,flexDirection:"row",padding:20, justifyContent: 'space-between' }}>
                <Icon name="chevron-left" size={30} />
                <Icon name="chevron-left" size={30} />
            </View>
    </View>

您将获得的截图:截图


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