JavaScript

i am trying to run the example code from react native you can find here: https://reactnative.dev/docs/pressable

I allways get the error message: Warning: React.createElement: type is invalid — expected a string (for built-in components) or a class/function (for composite components) but got: %s.%s%s, undefined, You likely forgot to export your component from the file it’s defined in, or you might have mixed up default and named imports.

can anyone tell me whats the problem here?

example code:

import React, { useState } from 'react';
import { Pressable, StyleSheet, Text, View } from 'react-native';

const App = () => {
  const [timesPressed, setTimesPressed] = useState(0);

  let textLog = '';
  if (timesPressed > 1) {
    textLog = timesPressed + 'x onPress';
  } else if (timesPressed > 0) {
    textLog = 'onPress';
  }

  return (
    <View>
      <Pressable
        onPress={() => {
          setTimesPressed((current) => current + 1);
        }}
        style={({ pressed }) => [
          {
            backgroundColor: pressed
              ? 'rgb(210, 230, 255)'
              : 'white'
          },
          styles.wrapperCustom
        ]}>
        {({ pressed }) => (
          <Text style={styles.text}>
            {pressed ? 'Pressed!' : 'Press Me'}
          </Text>
        )}
      </Pressable>
      <View style={styles.logBox}>
        <Text testID="pressable_press_console">{textLog}</Text>
      </View>
    </View>
  );
};

const styles = StyleSheet.create({
  text: {
    fontSize: 16
  },
  wrapperCustom: {
    borderRadius: 8,
    padding: 6
  },
  logBox: {
    padding: 20,
    margin: 10,
    borderWidth: StyleSheet.hairlineWidth,
    borderColor: '#f0f0f0',
    backgroundColor: '#f9f9f9'
  }
});

export default App;

Answer

Pressable is not available in Expo yet, because expo does not support React Native v0.63 (yet).

React Native – Pressable – Can’t run sample code

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Answer