Button

A basic button component that should render nicely on any platform. Supports a minimal level of customization.
If this button doesn't look right for your app, you can build your own button using TouchableOpacity or TouchableWithoutFeedback. For inspiration, look at the source code for this button component. Or, take a look at the wide variety of button components built by the community.
<Button
  onPress={onPressLearnMore}
  title="Learn More"
  color="#841584"
  accessibilityLabel="Learn more about this purple button"
/>

import React from 'react';
import { StyleSheet, Button, View, SafeAreaView, Text, Alert } from 'react-native';

const Separator = () => <View style={styles.separator} />;

export default function App() {
  return (
    <SafeAreaView style={styles.container}>
      <View>
        <Text style={styles.title}>
          The title and onPress handler are required. It is recommended to set accessibilityLabel to
          help make your app usable by everyone.
        </Text>
        <Button title="Press me" onPress={() => Alert.alert('Simple Button pressed')} />
      </View>
      <Separator />
      <View>
        <Text style={styles.title}>
          Adjust the color in a way that looks standard on each platform. On iOS, the color prop
          controls the color of the text. On Android, the color adjusts the background color of the
          button.
        </Text>
        <Button
          title="Press me"
          color="#f194ff"
          onPress={() => Alert.alert('Button with adjusted color pressed')}
        />
      </View>
      <Separator />
      <View>
        <Text style={styles.title}>All interaction for the component are disabled.</Text>
        <Button title="Press me" disabled onPress={() => Alert.alert('Cannot press this one')} />
      </View>
      <Separator />
      <View>
        <Text style={styles.title}>
          This layout strategy lets the title define the width of the button.
        </Text>
        <View style={styles.fixToText}>
          <Button title="Left button" onPress={() => Alert.alert('Left button pressed')} />
          <Button title="Right button" onPress={() => Alert.alert('Right button pressed')} />
        </View>
      </View>
    </SafeAreaView>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    marginHorizontal: 16,
  },
  title: {
    textAlign: 'center',
    marginVertical: 8,
  },
  fixToText: {
    flexDirection: 'row',
    justifyContent: 'space-between',
  },
  separator: {
    marginVertical: 8,
    borderBottomColor: '#737373',
    borderBottomWidth: StyleSheet.hairlineWidth,
  },
});

Reference

Handler to be called when the user taps the button. The first function argument is an event in form of PressEvent.
TypeRequired
functionYes

Text to display inside the button. On Android the given title will be converted to the uppercased form.
TypeRequired
stringYes

Text to display for blindness accessibility features.
TypeRequired
stringNo

Color of the text (iOS), or background color of the button (Android).
TypeRequiredDefault
colorNo'#2196F3' (Android)
'#007AFF' (iOS)

If true, disable all interactions for this component.
TypeRequiredDefault
boolNofalse

TV preferred focus.
TypeRequiredDefault
boolNofalse

Designates the next view to receive focus when the user navigates down. See the Android documentation.
TypeRequired
numberNo

Designates the next view to receive focus when the user navigates forward. See the Android documentation.
TypeRequired
numberNo

Designates the next view to receive focus when the user navigates left. See the Android documentation.
TypeRequired
numberNo

Designates the next view to receive focus when the user navigates right. See the Android documentation.
TypeRequired
numberNo

Designates the next view to receive focus when the user navigates up. See the Android documentation.
TypeRequired
numberNo

Used to locate this view in end-to-end tests.
TypeRequired
stringNo

If true, doesn't play system sound on touch.
TypeRequiredDefault
booleanNofalse