React Native:如何设置按钮样式，使其位于屏幕的右下角，并使其变小？

import React from 'react';
import { View, TouchableOpacity, StyleSheet } from 'react-native';

const MyButton = () => {
  return (
    <View style={styles.container}>
      <TouchableOpacity style={styles.button}>
        {/* 按钮内容 */}
      </TouchableOpacity>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    position: 'absolute',
    bottom: 10,
    right: 10,
  },
  button: {
    width: 50,
    height: 50,
    borderRadius: 25,
    backgroundColor: 'blue',
    justifyContent: 'center',
    alignItems: 'center',
  },
});

const App = () => {
  return (
    <View style={styles.container}>
      {/* 应用程序内容 */}
      <MyButton />
    </View>
  );
};