我如何知道我的TouchableOpacity的哪一面被压住了？

<TouchableOpacity
  style={[
    styles.button,
    { backgroundColor: this.state.isPressed ? 'red' : 'blue' },
  ]}
  onPressIn={() => this.setState({ isPressed: true })}
  onPressOut={() => this.setState({ isPressed: false })}
>
  <Text>Press Me</Text>
</TouchableOpacity>

state = {
  isPressed: false,
};

handlePressIn = () => {
  this.setState({ isPressed: true });
};

handlePressOut = () => {
  this.setState({ isPressed: false });
};

render() {
  return (
    <TouchableOpacity
      style={styles.button}
      onPressIn={this.handlePressIn}
      onPressOut={this.handlePressOut}
    >
      <Text>{this.state.isPressed ? 'Pressed' : 'Not Pressed'}</Text>
    </TouchableOpacity>
  );
}