链接到Safari"添加到主屏幕"从内部应用程序?

时间:2015-01-20 09:48:14

标签: ios objective-c facebook safari deep-linking

我的应用有自定义网址方案,可以使用深层链接直接从网址跳转到某些内容。我想在最近的Facebook Groups应用程序中复制该行为,该应用程序允许用户点击应用程序中的“添加到主屏幕”按钮,将其带到Safari中自定义设计的localhost页面,允许他们点击Safari的共享和添加到主屏幕按钮,然后在他们的主屏幕上添加一个图标,当点击时,将他们带入群组应用程序,以及相关的特定群组。

我的问题是,如果我将自定义网址方案的深层链接发送到Safari,那么在用户点按“添加到主屏幕”之前,它会跟随该链接并在我的应用中直接返回。我需要向Safari发送一些实际上不会跟随深层链接的内容,但如果用户将其添加到主屏幕,它仍会链接到它,我不知道该怎么做。

Facebook群组在Safari地址栏中生成的链接看起来像这样,是否可以将JavaScript直接嵌入到URL中?:

data:text/html;charset=UTF-8;base64, <tens of thousands of characters in an alpha-numeric string>

知道那是什么,以及我如何做类似的事情?

1 个答案:

答案 0 :(得分:10)

如果将这些字符粘贴到任何在线base64解码器中,您将获得以下内容:

<!DOCTYPE HTML>
<html>

<head id="htmlHead">
    <meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=no;" />
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta name="apple-mobile-web-app-capable" content="no" />
    <title>Promote Groups or Pages</title>
    <link rel="apple-touch-icon-precomposed" href="data:image/png;base64,
</head>

<body>
    <a id="redirect" href="fb-groups://group?id=1503507809911018&s=s"></a>
</body>

</html>
<script type="text/javascript">
    function jump() {
        var e = document.getElementById('redirect');
        var ev = document.createEvent('MouseEvents');
        ev.initEvent('click', true, true, document.defaultView, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
        e.dispatchEvent(ev);
        window.close();
    }
    if (("standalone" in window.navigator) && window.navigator.standalone) {
        document.body.style.backgroundColor = '#000000';
        jump();
    } else {
        var time = 1422371365;
        var timeout = new Date().getTime() / 1000;
        if (timeout > time + 4) {
            document.write('</head><body bgcolor="#fff"><div align="center"></div>');
            jump();
        } else {
            document.write(
              ####
                          )}
    }
</script>

而不是####,有以下内容:

<style>
    html,
    body,
    div,
    span,
    object,
    iframe,
    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        margin: 0;
        padding: 0;
        border: 0;
        font-size: 100%;
        vertical-align: baseline;
        font-family: HelveticaNeue-Light, sans-serif;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none
    }
    a {
        color: inherit;
        text-decoration: none
    }
    #headerBox {
        width: 100%;
        height: 48px;
        border-bottom: .5px solid #979797;
        background-color: #F6F6F6;
        text-align: center
    }
    #popoverBox {
        position: absolute;
        bottom: 15px;
        width: 290px;
        height: 132px;
        -webkit-border-radius: 11px;
        border-radius: 11px;
        background-color: #2891F7;
        border: none;
        margin-left: -145px;
        left: 50%
    }
    #popoverBox:after {
        top: 100%;
        left: 50%;
        border: solid transparent;
        content: " ";
        height: 0;
        width: 0;
        position: absolute;
        pointer-events: none;
        border-color: rgba(40, 145, 247, 0);
        border-top-color: #2891F7;
        border-width: 13px;
        margin-left: -13px
    }
    .icon {
        margin-bottom: 5px
    }
    #groupIconContainer {
        margin-left: 40px;
        width: 60px;
        float: left;
        height: 100%
    }
    #groupIcon {
        height: 60px;
        width: 60px;
        -webkit-border-radius: 14px;
        border-radius: 14px;
        background-color: #FFF;
        margin-top: 25px
    }
    #addToHomeIconContainer {
        margin-right: 40px;
        width: 60px;
        float: right;
        height: 100%
    }
    #addToHomeIcon {
        margin-top: 25px
    }
    #arrow {
        margin: 0 auto;
        display: block;
        margin-top: 49px
    }
    #infoText {
        color: #141823;
        font-size: 18px;
        line-height: 28px;
        text-align: center;
        width: 280px;
        height: 160px;
        margin: auto;
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0
    }
    .iconLabelContainer {
        font-size: 12px;
        color: #FFF;
        line-height: 14px;
        width: 100px;
        height: 30px;
        margin-left: -20px;
        text-align: center
    }
    #groupCoverImage {
        box-sizing: border-box;
        -webkit-box-sizing: border-box;
        background-size: cover;
        background-position: center;
        background-image: url("data:image/png;base64,
        width: 52px;
        height: 52px;
        border-radius: 50%;
        position: relative;
        top: 4px;
        left: 4px;
        border: 0.5px solid rgba(0, 0, 0, 0.10);
    }
</style>

<body>
    <div id="headerBox"><span style="font-size:17px;color:#2891F7;line-height:20px;position:relative;top:13.5px"><a href="fb-groups://">Отмена</a></span>
    </div>
    <div id="infoText">Коснитесь кнопки
        <svg style="vertical-align:text-bottom" width="22px" height="30px" viewbox="0 0 44 60" version="1.1">
            <defs></defs>
            <g id="Final" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
                <g id="Add-Group-to-Home-Screen" transform="translate(-299.000000, -459.000000)">
                    <g id="Tap-+-below-+-Share-Icon" transform="translate(231.000000, 458.000000)">
                        <g id="share-icon" transform="translate(60.000000, 0.000000)">
                            <path d="M20.4,12 L30,2.4 L39.6,12" id="Shape" stroke="#3F75FF" stroke-width="2"></path>
                            <path d="M30,39.0000013 L30,2.7996" id="Shape" stroke="#3F75FF" stroke-width="2"></path>
                            <rect id="Rectangle-path" x="0" y="0" width="60" height="60"></rect>
                            <path d="M20.2682927,20 L9,20 L9,60 L51,60 L51,20 L39.7317073,20" id="Shape" stroke="#3F75FF" stroke-width="2"></path>
                        </g>
                    </g>
                </g>
            </g>
        </svg> ниже,
        <br>Затем коснитесь &ldquo;Добавить на основной экран&rdquo;</div>
    <div id="popoverBox">
        <div id="groupIconContainer">
            <div id="groupIcon" class="icon">
                <div id="groupCoverImage"></div>
            </div>
            <div class="iconLabelContainer">Promote Groups or Pages</div>
            <!-- Replace with dynamic name -->
        </div>
        <div id="addToHomeIconContainer">
            <svg id="addToHomeIcon" width="60px" height="60px" viewbox="0 0 120 120" version="1.1">
                <defs></defs>
                <g id="Add-Group-to-Home-Screen-Spec" transform="translate(-410.000000, -802.000000)">
                    <g id="Add-to-Home-Screen" transform="translate(367.000000, 802.000000)">
                        <g id="Add-to-Home-Screen-Icon" transform="translate(43.000000, 0.000000)">
                            <rect id="Rectangle-6" fill="#FFFFFF" x="0" y="0" width="120" height="120" rx="28"></rect>
                            <rect id="Rectangle-6" fill="#686870" x="25" y="25" width="70" height="70" rx="15"></rect>
                            <path d="M58,58 L58,46.991617 C58,45.8978404 58.8954305,45 60,45 C61.1122704,45 62,45.8916773 62,46.991617 L62,58 L73.008383,58 C74.1021596,58 75,58.8954305 75,60 C75,61.1122704 74.1083227,62 73.008383,62 L62,62 L62,73.008383 C62,74.1021596 61.1045695,75 60,75 C58.8877296,75 58,74.1083227 58,73.008383 L58,62 L46.991617,62 C45.8978404,62 45,61.1045695 45,60 C45,58.8877296 45.8916773,58 46.991617,58 L58,58 Z" id="Rectangle-8" fill="#FFFFFF"></path>
                        </g>
                    </g>
                </g>
            </svg>
            <div class="iconLabelContainer">Добавить на
                <br>основной экран</div>
        </div>
        <svg id="arrow" width="12px" height="20px" viewbox="0 0 24 40" version="1.1">
            <defs></defs>
            <g id="Explorations" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
                <g id="Add-Group-to-Home-Screen" transform="translate(-307.000000, -847.000000)" stroke-linecap="round" stroke="#FFFFFF" stroke-width="5">
                    <g id="Group" sketch:type="MSLayerGroup" transform="translate(30.000000, 752.000000)">
                        <path d="M297,132 L280,115 L297,98" id="Path-35" transform="translate(288.500000, 115.000000) rotate(-180.000000) translate(-288.500000, -115.000000) "></path>
                    </g>
                </g>
            </g>
        </svg>
    </div>
    <div id="popoverNub"></div>');

所以我相信他们的实施如下:

1)应用程序中嵌入了一个Web服务器(类似RoutingHTTPServer)。它在某个端口上运行,如5555,并配置为返回包含以下内容的页面:

<HTML><script>window.location.href=[data:text/html;charset=UTF-8;base64, tens of thousands of characters in an alpha-numeric string]</script></HTML>

语法错误,但想法是用当前的base64编码数据替换当前的URL(http://localhost:5555)。

2)当您点按应用中的add to home page时,它会在Safari中打开链接http://localhost:5555,应用内的网络服务器会响应网页,其中包含一个用以下内容替换网址的脚本base64编码数据(此数据包含生成脚本时的当前时间)

3)从base64编码数据的内容中可以看出有两个检查:

a)如果应用程序不在Safari中运行,而是独立运行

b)自生成脚本以来已经过了一段时间

如果这些陈述中的任何一个属实,您将使用深层链接重定向到应用程序。 如果两者都为假,则会显示提示用户将链接添加到主屏幕的页面(这是我用####替换的内容)。

当链接添加到主屏幕时,所有这些脚本和网页都作为base64编码数据嵌入到该链接中。