How to change image and text color when clicking using react-native?

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情话喂你
情话喂你 2021-02-19 03:43

I am using TouchableHighlight, but I can change only background color using underlayColor. But how to change other content?

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3条回答
  • 2021-02-19 04:02

    With TouchableHighlight you can do it like this

    state = { selected: false };
    
    setSelected(selected: boolean) {
        this.setState({ selected: selected });
    }
    
    textStyle() {
        return this.state.selected ? styles.textSelected : styles.text;
    }
    

    And then in the render function

    <TouchableHighlight
        underlayColor={Theme.palette.accent}
        onPress={() => onPress()}
        onShowUnderlay={() => this.setSelected(true)}
        onHideUnderlay={() => this.setSelected(false)}
    >
        <Text style={this.textStyle()}>{text}</Text>
    </TouchableHighlight>
    
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  • 2021-02-19 04:04

    This answer is assuming you want to change the color just while the button is depressed:

    Use TouchableWithoutFeedback and define your own onPressIn and onPressOut functions to change the text color.

    <TouchableWithoutFeedback onPressIn={this.colorText}  onPressOut={this.resetText}> 
      <Text style={[styles.textColored()]}>MyText</Text>
    </TouchableWithoutFeedback>
    
    colorText: function() {
      this.setState({textColored: true});
    },
    resetText: function() {
      this.setState({textColored: false});
    },
    textColored: function() {
      if(this.state.textColored) {
        return styles.textColored;
      } else {
        return styles.textNormal;
      }
    }
    
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  • 2021-02-19 04:13
    'use strict';
    
    var React = require('react-native');
    var {
      AppRegistry,
      StyleSheet,
      Text,
      View,
      TouchableHighlight
    } = React;
    
    var  colors = ['#ffffd', '#efefef', 'red', '#666', 'rgba(0,0,0,.1)', '#ededed'];
    var backgroundcolors = ['green', 'black', 'orange', 'blue', 'purple', 'pink'];
    
    var SampleApp = React.createClass({
    
      getInitialState() {
        return {
            color: 'orange',
          backgroundColor: 'rgba(0,0,0,.1)'
        }
      },
    
      _changeStyle() {
        var color = colors[Math.floor(Math.random()*colors.length)];
        var backgroundColor = backgroundcolors[Math.floor(Math.random()*backgroundcolors.length)];
        this.setState({
            color: color,
          backgroundColor: backgroundColor
        })
      },
    
      render: function() {
        return (
          <View style={styles.container}>
            <TouchableHighlight 
            onPress={ () => this._changeStyle() }
            style={{ backgroundColor: this.state.backgroundColor, height: 60, flexDirection: 'row', alignItems:'center', justifyContent: 'center' }}>
                    <Text style={{ fontSize: 22, color: this.state.color }}>CHANGE COLOR</Text>
            </TouchableHighlight>
    
            <TouchableHighlight style={{ backgroundColor: 'red', height: 60, flexDirection: 'row', alignItems:'center', justifyContent: 'center' }}>
              <Text style={{ color: 'white', fontSize:22 }} >Click Me</Text>
            </TouchableHighlight>
          </View>
        );
      }
    });
    
    var styles = StyleSheet.create({
      container: {
        flex: 1,
        marginTop:60
      }
    });
    
    AppRegistry.registerComponent('SampleApp', () => SampleApp);
    
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