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react-native-qrcode-snapshot

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react-native-qrcode-snapshot

react-native中产生二维码和保存快照到相册中

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npmnpm
Version
1.0.4
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1
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react-native-qrcode-snapshot

react-native中产生二维码和保存快照到相册中

补充 2018-12-10

快照只适用于ios,如果想在安卓上也支持快照。可以使用react-native-view-shot作为安卓的补充。

import { captureRef } from "react-native-view-shot";

snapshot_src = "";
async snapshot() {
    if (this.snapshot_src) return this.snapshot_src;
    if (Platform.OS === "ios") {
        return this.refs.share.save();
    } else {
        this.snapshot_src = captureRef(this.refs.share)
        return this.snapshot_src;
    }
}
async save() {
    let img = await this.snapshot();
    return CameraRoll.saveToCameraRoll(img, "photo");
}

QRCode

./lib/QRCode

通过使用qrcode.js的方式在webview中产生合适的二维码图片。

使用示例

import { QRCode } from "react-native-qrcode-snapshot"

<QRCode value="二维码内容" size={100} />

参数:

    const props={
        value: "",  //二维码要显示的内容
        size: 100,  //二维码组件要展示的大小
        bgColor: "#fff",    //背景色
        fgColor: "#000",    //前景色,像素块的颜色
        engine: "http://img.daling.com/st/topic/qrcode.min.js", //产生二维码使用的引擎地址,可以替换成自己的地址
        onLoad: () => { },  //浏览器加载回调
        onLoadEnd: () => { },   //浏览器加载回调
    }

Snapshot

通过使用快照的方式产生组件的图片,并保存在手机的相册中。

使用示例

import {Snapshot} from "react-native-qrcode-snapshot"

<Snapshot ref="snapshot" style={{width:100}}>
    {/*自定义内容*/}
    <View>
        <Text>显示自定义内容</Text>
    </View>
</Snapshot>

//点击按钮等触发
onclick(){
    this.refs.snapshot.takeSnapshot();
}

参数:

snapshot.takeSnapshot({
    format: 'png', //后缀,支持主流图片后缀
    quality: 1  //质量,0-1
});

Keywords

react-native

FAQs

Package last updated on 19 Dec 2018

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