React Native |为什么我的函数立即运行，而不仅仅是onPress？

<Button title="Click Me" onPress={this.handleClick} />

<Button title="Click Me" onPress={this.handleClick()} />

<Button title="Click Me" onPress={this.handleClick} />

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.handleClick = this.handleClick.bind(this);
  }

  handleClick() {
    // 处理点击事件
  }

  render() {
    return (
      <Button title="Click Me" onPress={this.handleClick} />
    );
  }
}

class MyComponent extends React.Component {
  handleClick = () => {
    // 处理点击事件
  }

  render() {
    return (
      <Button title="Click Me" onPress={this.handleClick} />
    );
  }
}