H5 plus 扫码功能实现

scan.vue界面

<template>
    <view class="content">
        <view>二维码数据是：{{result}}</view>
        <button class="btn" type="primary" @tap="open">自定义二维码界面</button>
    </view>

</template>

<script>
    export default {
        data() {
            return {
                text: '测试',
                type: 'scan-listener',
                result: '' //获取到的二维码内容，根据自己需求处理结果

            }
        },
        methods: {
            handClick(res){
                this.result = res;
            },
            open() {
                uni.navigateTo({
                    url: './test?text=' + this.text + '&type=' + this.type,
                    success: res => {},
                    fail: () => {},
                    complete: () => {}
                });
            }
        },
        onReady() {
            uni.$on('handClick',this.handClick)
            // #ifdef APP-PLUS
            // #endif
        },
        onLoad() {
            // #ifdef APP-PLUS
            this.$eventHub.$on(this.type, function(data) {
                console.log(data);
                this.text = data;
            });
            // #endif
        },
        onBackPress() {
            // #ifdef APP-PLUS
            plus.screen.lockOrientation('portrait-primary')
            // #endif
        }
    }
</script>

<style>
    .content {
         100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .btn {
         50%;
    }
</style>

test.vue界面
<template>
    <view>
    </view>
</template>
<script>
    var barcode = null;
    export default {
        data() {
            return {
                name: '自定义', //要在扫码界面自定义的内容
                flash: false, //是否打开摄像头
                type: '',
            };
        },
        onLoad(d) {
            var n = d.text;
            this.type = d.type;
            if (n) {
                this.name = n;
            }
            var pages = getCurrentPages();
            var page = pages[pages.length - 1];
            // #ifdef APP-PLUS
            plus.navigator.setFullscreen(true); //全屏
            var currentWebview = page.$getAppWebview();
            this.createBarcode(currentWebview); //创建二维码窗口
            this.createView(currentWebview); //创建操作按钮及tips界面
            // #endif
        },
        methods: {
            // 扫码成功回调
            onmarked(type, result) {
                var text = '未知: ';
                switch (type) {
                    case plus.barcode.QR:
                        text = 'QR: ';
                        break;
                    case plus.barcode.EAN13:
                        text = 'EAN13: ';
                        break;
                    case plus.barcode.EAN8:
                        text = 'EAN8: ';
                        break;
                    case plus.barcode.CODE39:
                        text = 'CODE39: '; 
                        break;
                }
                plus.navigator.setFullscreen(false);
                uni.navigateBack({
                    delta: 1
                });
                uni.$emit('handClick',result);
                // this.$eventHub.$emit(this.type, {
                //     result: result
                // });
                barcode.close();
            },
            // 创建二维码窗口
            createBarcode(currentWebview) {
                barcode = plus.barcode.create('barcode', [plus.barcode.CODE39], {
                    top: '0',
                    left: '0',
                     '100%',
                    height: '100%',
                    scanbarColor: '#1DA7FF',
                    position: 'static',
                    frameColor: '#1DA7FF'
                });
                barcode.onmarked = this.onmarked;
                barcode.setFlash(this.flash);
                currentWebview.append(barcode);
                barcode.start();
            },
            // 创建操作按钮及tips
            createView(currentWebview) {
                // 创建返回原生按钮
                var backVew = new plus.nativeObj.View('backVew', {
                        top: '0px',
                        left: '0px',
                        height: '40px',
                         '100%'
                    },
                    [{
                        tag: 'img',
                        id: 'backBar',
                        src: 'static/backBar.png',
                        position: {
                            top: '2px',
                            left: '3px',
                             '35px',
                            height: '35px'
                        }
                    }]);
                // 创建打开手电筒的按钮
                var scanBarVew = new plus.nativeObj.View('scanBarVew', {
                        top: '60%',
                        left: '40%',
                        height: '10%',
                         '20%'
                    },
                    [{
                            tag: 'img',
                            id: 'scanBar',
                            src: 'static/scanBar.png',
                            position: {
                                 '28%',
                                left: '36%',
                                height: '30%'
                            }
                        },
                        {
                            tag: 'font',
                            id: 'font',
                            text: '轻触照亮',
                            textStyles: {
                                size: '10px',
                                color: '#ffffff'
                            },
                            position: {
                                 '80%',
                                left: '10%'
                            }
                        }
                    ]);
                // 创建展示类内容组件
                var content = new plus.nativeObj.View('content', {
                        top: '0px',
                        left: '0px',
                        height: '100%',
                         '100%'
                    },
                    [{
                            tag: 'font',
                            id: 'scanTitle',
                            text: '扫码',
                            textStyles: {
                                size: '18px',
                                color: '#ffffff'
                            },
                            position: {
                                top: '0px',
                                left: '0px',
                                 '100%',
                                height: '40px'
                            }
                        },
                        {
                            tag: 'font',
                            id: 'scanTips',
                            text: this.name,
                            textStyles: {
                                size: '14px',
                                color: '#ffffff',
                                whiteSpace: 'normal'
                            },
                            position: {
                                top: '90px',
                                left: '10%',
                                 '80%',
                                height: 'wrap_content'
                            }
                        }
                    ]);
                backVew.interceptTouchEvent(true);
                scanBarVew.interceptTouchEvent(true);
                currentWebview.append(content);
                currentWebview.append(scanBarVew);
                currentWebview.append(backVew);
                backVew.addEventListener("click", function(e) { //返回按钮
                    uni.navigateBack({
                        delta: 1
                    });
                    barcode.close();
                    plus.navigator.setFullscreen(false);
                }, false);
                var temp = this;
                scanBarVew.addEventListener("click", function(e) { //点亮手电筒
                    temp.flash = !temp.flash;
                    if (temp.flash) {
                        scanBarVew.draw([{
                                tag: 'img',
                                id: 'scanBar',
                                src: 'static/yellow-scanBar.png',
                                position: {
                                     '28%',
                                    left: '36%',
                                    height: '30%'
                                }
                            },
                            {
                                tag: 'font',
                                id: 'font',
                                text: '轻触照亮',
                                textStyles: {
                                    size: '10px',
                                    color: '#ffffff'
                                },
                                position: {
                                     '80%',
                                    left: '10%'
                                }
                            }
                        ]);
                    } else {
                        scanBarVew.draw([{
                                tag: 'img',
                                id: 'scanBar',
                                src: 'static/scanBar.png',
                                position: {
                                     '28%',
                                    left: '36%',
                                    height: '30%'
                                }
                            },
                            {
                                tag: 'font',
                                id: 'font',
                                text: '轻触照亮',
                                textStyles: {
                                    size: '10px',
                                    color: '#ffffff'
                                },
                                position: {
                                     '80%',
                                    left: '10%'
                                }
                            }
                        ])
                    }
                    if (barcode) {
                        barcode.setFlash(temp.flash);
                    }
                }, false)
            }
        },
        onBackPress() {
            // #ifdef APP-PLUS
            // 返回时退出全屏
            barcode.close();
            plus.navigator.setFullscreen(false);
            // #endif
        },
        onUnload() {
            plus.navigator.setFullscreen(false);
        }
    };
</script>

<style scoped>
</style>