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react native ref替換Image組件

剛接觸RN的項(xiàng)目,需要實(shí)現(xiàn)一個(gè)比較簡(jiǎn)單的功能:點(diǎn)擊按鈕,替換指定Image組件的source。

我用state簡(jiǎn)單實(shí)現(xiàn)了下,功能沒(méi)問(wèn)題,不過(guò)用state來(lái)控制,如果組件太多的話,會(huì)不會(huì)有性能上的問(wèn)題?

this.setState({
    key: value,
});

然后就想到ref這個(gè)屬性,但是試了下,獲取到的Image組件的source是個(gè)數(shù)字,不知道該怎么替換了,請(qǐng)各位指導(dǎo)下,多謝了!

回答
編輯回答
夏夕

不太明白你所說(shuō)的問(wèn)題,不過(guò)我實(shí)現(xiàn)了一個(gè)類(lèi)似功能組件,直接setState就可以替換了。

import React, { Component } from 'react';
import { AppRegistry, Button, Image, View, Alert } from 'react-native';

export default class ImageBox extends Component {
  constructor() {
    super();
    this.state = {
      source: { uri: 'data:image/jpeg;base64,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' }
    }
    this.onClick = this.onClick.bind(this);
  }

  onClick() {
    this.setState({
      source: {
        uri: 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'
      }
    });
  }
  render() {
    return (
      <View>
        <Image source={this.state.source} style={{width: 400, height: 400}} />
        <Button onPress={this.onClick} title="change image" />
      </View>
    );

  }
}
2018年8月27日 07:35