zoukankan      html  css  js  c++  java
  • [React Native] Using the Image component and reusable styles

    Let's take a look at the basics of using React Native's Image component, as well as adding some reusable styling to our Dashboard component buttons.

    We are going to build Dashboard Component, it will looks like this:

    Basicly have one image component and three TouchableHighlight components.

    import React, { Component } from 'react';
    import {Text, View, StyleSheet, Image, TouchableHighlight} from 'react-native';
    
    var styles = StyleSheet.create({
        container: {
            marginTop: 65,
            flex: 1
        },
        image: {
            height: 350,
        },
        buttonText: {
            fontSize: 24,
            color: 'white',
            alignSelf: 'center'
        }
    });
    
    class Dashboard extends React.Component{
        makeBackground(btn){
            var obj = {
                flexDirection: 'row',
                alignSelf: 'stretch',
                justifyContent: 'center',
                flex: 1
            }
            if(btn === 0){
                obj.backgroundColor = '#48BBEC';
            } else if (btn === 1){
                obj.backgroundColor = '#E77AAE';
            } else {
                obj.backgroundColor = '#758BF4';
            }
            return obj;
        }
        goToProfile(){
            console.log('Going to Profile Page');
        }
        goToRepos(){
            console.log('Going to Repos');
        }
        goToNotes(){
            console.log('Going to Notes');
        }
        render(){
            return (
                <View style={styles.container}>
                    <Image source={{uri: this.props.userInfo.avatar_url}} style={styles.image}/>
                    <TouchableHighlight
                        style={this.makeBackground(0)}
                        onPress={this.goToProfile.bind(this)}
                        underlayColor="#88D4F5">
                        <Text style={styles.buttonText}>View Profile</Text>
                    </TouchableHighlight>
                    <TouchableHighlight
                        style={this.makeBackground(1)}
                        onPress={this.goToRepos.bind(this)}
                        underlayColor="#E39EBF">
                        <Text style={styles.buttonText}>View Repositories</Text>
                    </TouchableHighlight>
                    <TouchableHighlight
                        style={this.makeBackground(2)}
                        onPress={this.goToNotes.bind(this)}
                        underlayColor="#9BAAF3">
                        <Text style={styles.buttonText}>Take Notes</Text>
                    </TouchableHighlight>
                </View>
            )
        }
    };
    
    module.exports = Dashboard;

    The data 'this.props.userInfo' was passed from 'navigator' in main.js:

        handleSubmit(event){
            //update our indicatorIOS spinner
            this.setState({
                isLoading: true
            });
            //fetch data from github
            api.getBio(this.state.username)
                .then( (res) => {
                    if(res.message === "Not Found"){
                        this.setState({
                            error: 'User not found',
                            isLoading: false
                        })
                    }else{
                        //Pass in a new router component
                        this.props.navigator.push({
                            title: res.name || 'Selet an Option',
                            component: Dashboard,
                            passProps: {userInfo: res}
                        });
                        //Clean the search input and loading
                        this.setState({
                            isLoading: false,
                            error: false,
                            username: ''
                        });
                    }
                })
        }
  • 相关阅读:
    SpringCloud-Hystrix Dashboard 之 Unable to connect to Command Metric Stream
    try() catch{}
    git使用和操作
    外部服务器使用jedis操作redis数据库
    Tomcat部署spring boot项目
    java成神之路截图
    innodb 死锁分析之相关表结构说明
    mysql 死锁案例及分析过程
    Head First设计模式之观察者(Observer)模式(二)
    Head First设计模式之策略模式(Strategy)
  • 原文地址:https://www.cnblogs.com/Answer1215/p/5713280.html
Copyright © 2011-2022 走看看