小编Tie*_* Tu的帖子

我想隐藏注册并使用 的disable属性TouchableOpacity，但它似乎不起作用

 const isInvalid = 
       passwordOne !== passwordTwo || 
       passwordOne === "" || 
       email === "" || 
       username === "";

<TouchableOpacity style={styles.button} disabled={isInvalid}>
   <Text style={styles.buttonText} onPress={this.handleSignUp}>
      Sign up
   </Text>
 </TouchableOpacity>

但注册按钮并未隐藏

我的代码：

import ....

const INITIAL_STATE = {
...
};

export default class Signup extends Component<{}> {

  handleSignUp = () => {
    ...
  };

  render() {

    const isInvalid =
      passwordOne !== passwordTwo ||
      passwordOne === "" ||
      email === "" ||
      username === "";
    return ( …