Reactでパスワード非表示機能を実装する方法

import {
  View,
  Text,
  TouchableWithoutFeedback,
  TextInput,
  Image,
  StyleSheet,
} from 'react-native';

export default class App extends Component {
  constructor(props) {
    super(props);
    this.state = {
      imageState: false,
    };
  }
  render() {
    return (
      <View style={{ flex: 1, justifyContent: &#39;space-around&#39; }}>
        <View
          style={{ backgroundColor: &#39;#ffffff&#39;, height: 50, flexDirection: &#39;row&#39;, justifyContent: &#39;space-between&#39;, marginTop: 1, }}>
          <Text style={pageStyle.textStyle}>请输入密码:</Text>
          <TextInput
            secureTextEntry={!this.state.imageState}//是否隐藏
            editable={true}//是否可编辑
            style={pageStyle.textInfoStyle}>
            test12345test
          </TextInput>
          <TouchableWithoutFeedback style={{ marginRight: 10 }} onPress={this.onPressChang}>
            {this.state.imageState ? (
              <Image style={{ width: 21, height: 14, alignSelf: &#39;center&#39;, marginRight: 10, }}
                source={require(&#39;../ReactDemo1/android/app/src/main/res/mipmap-xhdpi/password_show.png&#39;)}
              />) : (<Image style={{ width: 20, height: 8, alignSelf: &#39;center&#39;, marginRight: 10, }}
                source={require(&#39;../ReactDemo1/android/app/src/main/res/mipmap-xhdpi/password_hide.png&#39;)}
              />)}
          </TouchableWithoutFeedback>
        </View>
      </View>
    );
  }
  onPressChang = () => {
    this.setState({
      imageState: !this.state.imageState,
    });
  };
}
const pageStyle = StyleSheet.create({
  textInfoStyle: {
    alignSelf: &#39;center&#39;,
    marginLeft: 40,
    color: &#39;#343434&#39;,
    fontSize: 16,
    flex: 1,
  },
  textStyle: {
    alignSelf: &#39;center&#39;,
    marginLeft: 10,
    color: &#39;#343434&#39;,
    fontSize: 16,
  },
});