react-native-root-toast是一个挺不错的提示组件，大概用法如下：

持续时间

Toast.durations.SHORT (equals to 2000)

Toast.durations.LONG (equals to 3500)

提示位置

Toast.positions.TOP (equals to 20)

Toast.positions.BOTTOM (equals to -20)

Toast.positions.CENTER (equals to 0)

具体属性

WX20170527-112842.png

用法一：

import Toast from 'react-native-root-toast';


// Add a Toast on screen.
let toast = Toast.show('This is a message', {
    duration: Toast.durations.LONG,
    position: Toast.positions.BOTTOM,
    shadow: true,
    animation: true,
    hideOnPress: true,
    delay: 0,
    onShow: () => {
        // calls on toast\`s appear animation start
    },
    onShown: () => {
        // calls on toast\`s appear animation end.
    },
    onHide: () => {
        // calls on toast\`s hide animation start.
    },
    onHidden: () => {
        // calls on toast\`s hide animation end.
    }
});

// You can manually hide the Toast, or it will automatically disappear after a `duration` ms timeout.
setTimeout(function () {
    Toast.hide(toast);
}, 500);

用法二：

import React, {Component} from 'react-native';
import Toast from 'react-native-root-toast';

class Example extends Component{
    constructor() {
        super(...arguments);
        this.state = {
            visible: false
        };
    }

    componentDidMount() {
        setTimeout(() => this.setState({
            visible: true
        }), 2000); // show toast after 2s

        setTimeout(() => this.setState({
            visible: false
        }), 5000); // hide toast after 5s
    };

    render() {
        return <Toast
            visible={this.state.visible}
            position={50}
            shadow={false}
            animation={false}
            hideOnPress={true}
        >This is a message</Toast>;
    }
}

效果

screen-shoots