javascript - React Native PanResponder 在旋转变换后表现相反

Question

React Native PanResponder 在旋转变换后沿相反方向平移

import React, { useRef } from "react";
import { Animated, View, StyleSheet, PanResponder, Text } from "react-native";

const App = () => {
  const pan = useRef(new Animated.ValueXY()).current;

  const panResponder = useRef(
    PanResponder.create({
      onMoveShouldSetPanResponder: () => true,
      onPanResponderGrant: () => {
        pan.setOffset({
          x: pan.x._value,
          y: pan.y._value
        });
      },
      onPanResponderMove: Animated.event([null, { dx: pan.x, dy: pan.y }]),
      onPanResponderRelease: () => {
        pan.flattenOffset();
      }
    })
  ).current;

  return (
    <View style={[styles.container, { transform: [{ rotate: "180deg" }] }]}>
      <Text style={[styles.titleText, { transform: [{ rotate: "180deg" }] }]}>
        Drag this box!
      </Text>
      <Animated.View
        style={{
          transform: [{ translateX: pan.x }, { translateY: pan.y }]
        }}
        {...panResponder.panHandlers}
      >
        <View style={styles.box} />
      </Animated.View>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: "center",
    justifyContent: "center"
  },
  titleText: {
    fontSize: 14,
    lineHeight: 24,
    fontWeight: "bold"
  },
  box: {
    height: 150,
    width: 150,
    backgroundColor: "blue",
    borderRadius: 5
  }
});

export default App;

在上面的代码中，旋转 180 度后平移响应器计算的平移与用户的触摸手势相反。我怎样才能正确地翻译为角度可以是任何值。请在此处查看实时示例代码和框

标签： javascriptreact-nativetranslationpanresponder