如何在react native中将文本字段定位在按钮上方

<View style={styles.container}>
  <TextInput style={styles.textInput} placeholder="请输入文本" />
  <TouchableOpacity style={styles.button}>
    <Text style={styles.buttonText}>按钮</Text>
  </TouchableOpacity>
</View>

const styles = StyleSheet.create({
  container: {
    alignItems: 'center',
    justifyContent: 'center',
  },
  textInput: {
    width: 200,
    height: 40,
    borderWidth: 1,
    borderColor: 'gray',
    marginBottom: 10,
  },
  button: {
    backgroundColor: 'blue',
    padding: 10,
    borderRadius: 5,
  },
  buttonText: {
    color: 'white',
    fontSize: 16,
    fontWeight: 'bold',
  },
});