Question

我正在学习react-native编程，我在index.android.js中有一个组件。我在该组件中有一个TouchableOpacity。我想点击TouchableOpacity开始下一个组件。

<TouchableOpacity style={{ height: 40, marginTop: 10 , backgroundColor: '#2E8B57'}} onPress={}>
    <Text style={{color: 'white', textAlign: 'center', marginTop: 10, fontWeight: 'bold'}}>LOGIN</Text>
</TouchableOpacity>

有人可以建议我如何在onPress中设置点击监听器，以及如何在点击它时启动下一个组件。

提前致谢。

Answer 1

你可以根据状态/道具在单个组件中进行条件渲染，所以可能是这样的：

render() { 
    return state.displayComponent?
    <NewComponent /> :
    <TouchableOpacity ... onPress={() => this.setState({displayComponent: true})} />
}

，但如果您正在寻找更强大的内容，请阅读react-native-router-flux

Answer 2

试试这个

'use strict';

var React = require('react-native');

var {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  Navigator,
  TouchableOpacity,
} = React;

var CustomLeftToRightGesture = Object.assign({}, BaseConfig.gestures.pop, {
  snapVelocity: 8,
});

var CustomSceneConfig = Object.assign({}, BaseConfig, {

  springTension: 100,
  springFriction: 1,
  gestures: {
    pop: CustomLeftToRightGesture,
  }
});

var PageOne = React.createClass({
  _handlePress() {
    this.props.navigator.push({id: 2,});
  },
  render() {
    return (
      <View style={[styles.container, {backgroundColor: 'green'}]}>
        <Text style={styles.welcome}>Greetings!</Text>
        <TouchableOpacity onPress={this._handlePress}>
          <View style={{paddingVertical: 10, paddingHorizontal: 20, backgroundColor: 'black'}}>
            <Text style={styles.welcome}>Go to page two</Text>
          </View>
        </TouchableOpacity>
       </View>
    )
  },
});

var PageTwo = React.createClass({
  _handlePress() {
    this.props.navigator.pop();
  },

  render() {
    return (
      <View style={[styles.container, {backgroundColor: 'purple'}]}>
        <Text style={styles.welcome}>This is page two!</Text>
        <TouchableOpacity onPress={this._handlePress}>
          <View style={{paddingVertical: 10, paddingHorizontal: 20, backgroundColor: 'black'}}>
            <Text style={styles.welcome}>Go back</Text>
          </View>
        </TouchableOpacity>
       </View>
    )
  },
});

var SampleApp = React.createClass({
  _renderScene(route, navigator) {
    if (route.id === 1) {
      return <PageOne navigator={navigator} />
    } else if (route.id === 2) {
      return <PageTwo navigator={navigator} />
    }
  },

  _configureScene(route) {
    return CustomSceneConfig;
  },

  render() {
    return (
      <Navigator
        initialRoute={{id: 1, }}
        renderScene={this._renderScene}
        configureScene={this._configureScene} />
    );
  }
});

var styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
    color: 'white',
  },
});
AppRegistry.registerComponent('SampleApp', () => SampleApp);
module.exports = SampleApp;

参考此link

Answer 3

touchable opacity的全部内容是触摸它。

将您的Business Logic放在单独的class中，然后从Touchable opacity事件中调用它。然后在您想要的代码中使用该逻辑！

如何在本机

3 个答案: