关于java:使用微信wxopenlaunchapp标签实现微信网页打开App

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前提须知
笔者公司的我的项目在微信端的功能定位为根底性能交易及服务,告诉用户交易揭示、交易流水等,而 APP 为次要的交易性能。之前是在多个页面有引流按钮跳转至 App,性能点比拟粗犷,间接 location.href = 利用宝链接。当初产品有需要,说要用微信提供的标签来唤起 App

需要点:
所有跳转至 App 下载页面的局部,改成
Demo 后行
遇事不决,官网文档。查看后与微信 JS-SDK 性能点很像,这里我不废话,间接跳过。依照官网 demo,把示例写进业务代码中

import React, {useEffect, useRef} from 'react';
import {toDownloadApp, isWechat, getWeixinVersion} from 'utils';

const Download = () => {const wxRef = useRef(null)

    useEffect(() => {if (wxRef.current) {
            // @ts-ignore
            wxRef.current?.addEventListener('launch', function (e: any) {console.log('success');
            });
            // @ts-ignore
            wxRef.current.addEventListener('error', function (e) {console.log('fail', e.detail);
                toDownloadApp()});
        }
    }, [])

    const onHandleClick = () => {toDownloadApp()
    }

    return (<div className="Download" onClick={onHandleClick}>
            {/*  @ts-ignore */}
            <wx-open-launch-app
                ref={wxRef}
                appid="XXXX"
            >
                <script type='text/wxtag-template'>
                    <button>App 内查看 </button>
                </script>
                {/*  @ts-ignore */}
            </wx-open-launch-app>
        </div>
    )
}

export default React.memo(Download);

测试胜利,demo 能跑通

组件试点
当初搞业务,以这个组件(Download)为试点开展,我要点击页面顶部的卡片(多个中央应用,抽离成 Download 组件),让其唤起 App,然而要判断其版本,如果版本过低,让其跳转至利用宝

import React, {useState, useEffect, useRef} from 'react';
import LogoImg from '@/assets/images/logo.png';
import {toDownloadApp, isWechat, getWeixinVersion} from 'utils';

const Download = () => {const wxRef = useRef(null)
    const [enableLaunchWeapp, setEnableLaunchWeapp] = useState(false);

    useEffect(() => {const wxVersion = isWechat() && getWeixinVersion() || ''
        if (wxVersion) {let v = wxVersion.split('.')
            if (Number(v[0]) >= 7) {if (Number(v[1]) >= 0) {if (Number(v[2]) >= 12) {setEnableLaunchWeapp(true)
                    }
                }
            }
        }
        if (wxRef.current) {
            // @ts-ignore
            wxRef.current?.addEventListener('launch', function (e: any) {console.log('success');
            });
            // @ts-ignore
            wxRef.current.addEventListener('error', function (e) {console.log('fail', e.detail);
                toDownloadApp()});
        }
    }, [])

    const onHandleClick = () => {if (!enableLaunchWeapp) {toDownloadApp()
        }
    }

    return (<div className="Download" onClick={onHandleClick}>
            <div className="Download__logo">
                <img src={LogoImg} alt="logo" />
            </div>
            <div className="Download__content">
                <div className="Download__content-title"> 雅美 App</div>
                <div className="Download__content-desc"> 长泽雅美服务专区 </div>
            </div>
            {/* <div>1</div> */}
            <div className="Download__btn"> 立刻关上 </div>
            {/*  @ts-ignore */}
            <wx-open-launch-app
                ref={wxRef}
                appid="XXXXX"
                style={{position: 'fixed', top: 0, left: 0, width: '100%', height: '60px', opacity: 0.3, background: 'blue'}}
            >
                <script type='text/wxtag-template'>
                    <div style={{position: 'fixed', top: 0, left: 0, width: '90%', height: '100%', opacity: 0.3, background: 'red'}} />
                </script>
                {/*  @ts-ignore */}
            </wx-open-launch-app>
        </div>
    )
}

export default React.memo(Download);

成果如下所示:

思路逻辑参考:wx-open-launch-weapp 款式问题,我也给它配上色彩,不便后续察看

测试同步,能点击卡片跳转,好,下一步,在所有须要点击跳转页面的中央退出相似这样的代码

<wx-open-launch-app
    ref={wxRef}
    appid="XXXX"
    style={{position: 'fixed', top: 0, left: 0, width: '100%', height: '60px', opacity: 0.3, background: 'blue'}}
    >
    <script type='text/wxtag-template'>
        <div style={{position: 'fixed', top: 0, left: 0, width: '90%', height: '100%', opacity: 0.3, background: 'red'}} />
    </script>
    {/*  @ts-ignore */}
</wx-open-launch-app>

封装组件 WxOpenLaunchApp
如果是这样,就能够将其封装成一个组件了,起个名吧:WxOpenLaunchApp

将唤起 App 的内容包装成一个组件,暴雷 children 和 style 两个 props,代码如下:

import React, {useEffect, useRef, forwardRef} from 'react';
import {toDownloadApp} from 'utils';

export interface WxOpenLaunchAppProps {
    children: React.ReactNode;
    style?: React.CSSProperties;
}

const WxOpenLaunchApp: React.FC<WxOpenLaunchAppProps> = props => {const { style, children} = props;

    const wxRef = useRef(null)

    useEffect(() => {if (wxRef.current) {
            // @ts-ignore
            wxRef.current?.addEventListener('launch', function (e: any) {console.log('success');
            });
            // @ts-ignore
            wxRef.current.addEventListener('error', function (e) {console.log('fail', e.detail);
                toDownloadApp()});
        }
    }, [])

    return (
        <div className="wx-open-launch-app">
            {/*  @ts-ignore */}
            <wx-open-launch-app
                ref={wxRef}
                appid="XXXX"
                style={style}
            >
                <script type='text/wxtag-template'>
                    {children}
                </script>
                {/*  @ts-ignore */}
            </wx-open-launch-app>
        </div>
    )
}

export default React.memo(WxOpenLaunchApp);

那么 Download 组件也就能够洁净很多

...
const Download = () => {
    ...
    return (
        ...
            <div className="Download__btn"> 立刻关上 </div>
            {/*  @ts-ignore */}
            <WxOpenLaunchApp style={{position: 'fixed', top: 0, left: 0, width: '100%', height: '60px', opacity: 0.3, background: 'blue'}}>
                <div style={{position: 'fixed', top: 0, left: 0, width: '100%', height: '100%', opacity: 0.3, background: 'red'}} />
            </WxOpenLaunchApp>
        ...
    )
}
...

业务组件 OpenAppPopup
回到需要点,每个点击的中央都要弹出弹出框,点击 关上 App,再唤起 App,这样的话,弹出框 + WxOpenLaunchApp 就能够联合成一个组件,放进去供页面调用,名字就叫 OpenAppPopup,代码如下:

import React, {FC} from 'react';
import {Popup, WxOpenLaunchApp, Toast} from 'components'; // 此乃公司自研组件库

export interface OpenAppPopupProps {
    show: boolean;
    onCancel: () => void;
    onSubmit: () => void;}

const OpenAppPopup: FC<OpenAppPopupProps> = (props) => {const { show, onCancel, onSubmit} = props;

    return (<Popup.Group show={show}>
            <Popup.Confirm
                title="道歉,此性能需在雅美 App 中应用"
                btnSubmitText={<div style={{ position: 'relative'}}>
                        关上 App
                        <WxOpenLaunchApp style={{position: 'absolute', top: 0, left: 0, width: '100%', height: '100%', opacity: 0.3, background: 'blue'}}>
                            <div style={{position: 'absolute', top: 0, left: 0, width: '100%', height: '100%', opacity: 0.6, background: 'red'}} />
                        </WxOpenLaunchApp>
                    </div>
                }
                onCancel={onCancel}
                onSubmit={onSubmit}
            />
        </Popup.Group>
    )
}

export default React.memo(OpenAppPopup);

示意图如下:

接着在所有有跳转 App 的页面上用上这块逻辑即可

封装 HOOK
每个页面点击相似 下载 App 按钮时,会弹出 OpenAppPopup,点击 关上 App,须要判断你的微信版本,是否达到 7.0.12,如果每个页面都要加上这段

const wxVersion = (isWechat() && getWeixinVersion()) || ''
if (wxVersion) {let v = wxVersion.split('.')
  if (Number(v[0]) >= 7) {if (Number(v[1]) >= 0) {if (Number(v[2]) >= 12) {setEnableLaunchWeapp(true)
      }
    }
  }
}

真的太恶心了,果决抽离成 hook。代码如下:

import {useState, useEffect} from 'react';
import {isWechat, getWeixinVersion} from 'utils';

const useEnableLaunchWeapp = () => {const [enableLaunchWeapp, setEnableLaunchWeapp] = useState(false);
    useEffect(() => {const wxVersion = isWechat() && getWeixinVersion() || ''
        if (wxVersion) {let v = wxVersion.split('.')
            if (Number(v[0]) >= 7) {if (Number(v[1]) >= 0) {if (Number(v[2]) >= 12) {setEnableLaunchWeapp(true)
                    }
                }
            }
        }
    }, [])
    return enableLaunchWeapp
}

export default useEnableLaunchWeapp;

逻辑也很简略,在刚加载时判断它是否能够点击,能够点击,就设置 enableLaunchWeapp 为 true。应用办法也很简略

import React, {useState, useEffect} from 'react';
import {Dispatch, History} from 'umi';
import {OpenAppPopup} from 'components';
+import {useEnableLaunchWeapp} from 'hooks';
import {toDownloadApp} from 'utils';

interface KVProps {history: History;}

const KV: React.FC<KVProps> = (props) => {const { history} = props;

    const [isShow, setIsShow] = useState(false);

    +const enableLaunchWeapp = useEnableLaunchWeapp();

    const onHandleClickToBuy = () => {setIsShow(true);
    };

    const onHandleClickToSubmit = () => {+if (!enableLaunchWeapp) {+    toDownloadApp()
        +}
    }

    return (<div className="KV" style={{ background: kvBgColor}}>
            <div className="KV__content">
                <img src={img} alt="" />
            </div>
            <OpenAppPopup
                show={isShow}
                onCancel={() => {setIsShow(false);
                }}
                onSubmit={onHandleClickToSubmit}
            />
        </div>
    );
};

export default React.memo(KV);

与 App 交互
需要点里说:要在所在页面跳转至 App 绝对页面,文档上写的很显著,能够传参数 extinfo=”your-extinfo”,轻易写了个让客户端同当时测试先

未唤醒 App
我手机是 IOS 的,是能够唤起的,然而安卓共事调试的时候说,后盾运行时,能够唤起 App,然而没有切换动作;如果杀掉过程,就无奈唤起。而这问题,大概率是 SDK 配置的问题,共事看了半天没解决,扔给他 Android 接入指南。我又看不懂 Android,只能看他了

如果测试胜利,能跳过去,那么就把本页链接当作 extinfo 传过来,他那边接管到 extinfo 后,做个映射表,跳转至本身的页面即可,所以 WxOpenLaunchApp 须要革新,多一个 extinfo 参数。。。

后记
因为咱们用的是 flutter,共事说,因为引入的第三方库不反对,所以跳不过来,所以这个性能要后置,等他搞定了我再做更新
错误处理
除了在 WxOpenLaunchApp 组件中退出监听 error,谬误就让它跳转至 App 外,还要做当微信或者零碎版本不反对微信标签时,须要监听并进行回退兼容,代码如下:

document.addEventListener('WeixinOpenTagsError', function (e: any) {console.error(e.detail.errMsg) // 无奈应用凋谢标签的谬误起因,需回退兼容。仅无奈应用开发标签,JS-SDK 其余性能不受影响
  toDownloadApp()})

总结
又复用就抽离成组件

必须要上生产环境,所以最好是有个预生产环境

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