Question

我正在根据设计师的设计构建React Native应用程序。该设计有几个地方有按钮或带有一条对角线的形状（参见下面的例子）。我尝试使用SkewX，但这似乎只是旋转了整个形状（并且似乎无论如何都不适用于Android）。如何在一侧绘制带有对角线边框的矩形/按钮？

Answer 1

您可以将css应用于View类并创建所需的输出，这是一个小的演示代码编辑版本

import React, { Component } from 'react';
import { View, StyleSheet } from 'react-native';
import { Constants } from 'expo';

export default class App extends Component {
  render() {
    return (
      <View style={styles.container}>

        <View style={styles.triangleCorner}></View>
        <View style={styles.triangleCornerLayer}></View>
         <View style={styles.triangleCorner1}></View>

      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    paddingTop: Constants.statusBarHeight,
    backgroundColor: '#ecf0f1',
  },triangleCorner: {
    position: 'absolute',
    top:105,
    left:0,
    width: 300,
    height: 100,
    backgroundColor: 'transparent',
    borderStyle: 'solid',
    borderRightWidth: 50,
    borderTopWidth: 80,
    borderRightColor: 'transparent',
    borderTopColor: 'gray'
  },triangleCorner1: {
    position: 'absolute',
    top:100,
    left:0,
    width: 130,
    backgroundColor: 'transparent',
    borderStyle: 'solid',
    borderRightWidth: 50,
    borderTopWidth: 90,
    borderRightColor: 'transparent',
    borderTopColor: 'green'
  },triangleCornerLayer: {
    position: 'absolute',
    top:107,
    left:0,
    width:297,
    height: 100,
    backgroundColor: 'transparent',
    borderStyle: 'solid',
    borderRightWidth: 47,
    borderTopWidth: 75,
    borderRightColor: 'transparent',
    borderTopColor: 'white'
  }
});

<强>结果：

Answer 2

将CALayer用于此类形状。

以下代码：

    let layer = CAShapeLayer()
    let path = UIBezierPath()
    path.move(to: CGPoint(x: 0, y: 0))
    path.addLine(to: CGPoint(x: 150, y: 0))
    path.addLine(to: CGPoint(x: 100, y: 50))
    path.addLine(to: CGPoint(x: 0, y: 50))
    path.close()
    layer.path = path.cgPath
    layer.fillColor = UIColor.green.cgColor
    layer.strokeColor = UIColor.clear.cgColor
    view.layer.addSublayer(layer)

    let layer1 = CAShapeLayer()
    path.move(to: CGPoint(x: 100, y: 45))
    path.addLine(to: CGPoint(x: 300, y: 45))
    path.addLine(to: CGPoint(x: 350, y: 5))
    path.addLine(to: CGPoint(x: 150, y: 5))
    path.close()
    layer1.path = path.cgPath
    layer1.fillColor = UIColor.clear.cgColor
    layer1.strokeColor = UIColor.black.cgColor
    view.layer.addSublayer(layer1)

如何在React Native中创建对角线边框？

2 个答案: