this.props在React Native 0.27中未定义

class MyComponent extends React.Component {
  myMethod = () => {
    console.log(this.props);
  }
  
  render() {
    return (
      <TouchableOpacity onPress={this.myMethod}>
        <Text>Click me</Text>
      </TouchableOpacity>
    );
  }
}

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.myMethod = this.myMethod.bind(this);
  }
  
  myMethod() {
    console.log(this.props);
  }
  
  render() {
    return (
      <TouchableOpacity onPress={this.myMethod}>
        <Text>Click me</Text>
      </TouchableOpacity>
    );
  }
}