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<code>true</code> ，当用户将小程序转发到任一群聊之后，此转发卡片在群聊中被其他用户打开时，可以在 <a href="../../reference/api/App.html#onlaunchobject-object">App.onLaunch</a> 或 <a href="../../reference/api/App.html#onshowobject-object">App.onShow</a> 获取到一个 <code>shareTicket</code>。通过调用 <a href="../../api/share/wx.getShareInfo.html">wx.getShareInfo</a> 接口传入此 <code>shareTicket</code> 可以获取到转发信息。</p> <h2 id="页面内发起转发"><a href="#页面内发起转发" class="header-anchor">#</a> 页面内发起转发</h2> <blockquote><p>基础库 1.2.0 开始支持，低版本需做<a href="../compatibility.html">兼容处理</a>。</p></blockquote> <p>通过给 <code>button</code> 组件设置属性 <code>open-type="share"</code>，可以在用户点击按钮后触发 <a href="../../reference/api/Page.html#onshareappmessageobject-object"><code>Page.onShareAppMessage</code></a> 事件，相关组件：<a href="../../component/button.html">button</a>。</p> <h2 id="使用指引"><a href="#使用指引" class="header-anchor">#</a> 使用指引</h2> <p>转发按钮，旨在帮助用户更流畅地与好友分享内容和服务。转发，应是用户自发的行为，且在需要时触手可及。开发者在使用时若遵从以下指引，会得到更佳的用户体验。</p> <ol><li>含义清晰：明确、一目了然的图形按钮，将为用户减少理解的时间。在我们的资源下载中心，你可以找到这样的按钮素材并直接使用。或者你可以根据自己业务的设计风格，灵活设计含义清晰的按钮的样式。当然，你也可以直接使用带文案的按钮，“转发给好友”，它也足够明确。</li> <li>方便点击：按钮点击热区不宜过小，亦不宜过大。同时，转发按钮与其他按钮一样，热区也不宜过密，以免用户误操作。</li> <li>按需出现：并非所有页面都适合放置转发按钮，涉及用户隐私的非公开内容，或可能打断用户完成当前操作体验的场景，该功能并不推荐使用。同时，由于转发过程中，我们将截取用户屏幕图像作为配图，因此，需要注意帮助用户屏蔽个人信息。</li> <li>尊重意愿：理所当然，并非所有的用户，都喜欢与朋友分享你的小程序。因此，它不应该成为一个诱导或强制行为，如转发后才能解锁某项功能等。请注意，这类做法不仅不被推荐，还可能违反我们的<a href="https://mp.weixin.qq.com/debug/wxadoc/product/index.html" target="_blank" rel="noopener noreferrer">《运营规范》<span></span></a>，我们强烈建议你在使用前阅读这部分内容。</li></ol> <p>以上，我们陈列了最重要的几点，如果你有时间，可以完整浏览<a href="https://mp.weixin.qq.com/debug/wxadoc/design/index.html" target="_blank" rel="noopener noreferrer">《设计指南》<span></span></a>，相信会有更多的收获。</p> <h2 id="注意事项"><a href="#注意事项" class="header-anchor">#</a> 注意事项</h2> <ol><li>不自定义转发图片的情况下，默认会取当前页面，从顶部开始，高度为 80% 屏幕宽度的图像作为转发图片。</li> <li>转发的调试支持请查看 <a href="./../../devtools/different.html#普通的转发">普通转发的调试支持</a> 和 <a href="./../../devtools/different.html#带-shareticket-的转发">带 shareTicket 的转发</a></li> <li>转发非私密消息时，只有转发到群聊中打开才可以获取到 <code>shareTicket</code> 返回值，单聊没有 <code>shareTicket</code>。转发私密消息时，群聊和单聊都可获取到 <code>shareTicket</code>。私密消息详见 <a href="./share/private-message.html">私密消息使用指南</a></li> <li><code>shareTicket</code> 仅在当前小程序生命周期内有效</li> <li>由于策略变动，小程序群相关能力进行调整，开发者可先使用 <a href="../../api/share/wx.getShareInfo.html">wx.getShareInfo</a> 接口中的群 ID 进行功能开发。</li> <li>微信7.0.12开始，支持群主转发小程序时同时把消息设为该群的群待办消息，群待办消息会以气泡形式出现在聊天窗口底部。默认每次转发一个群待办消息，都会生成一个待办消息气泡。通过 <a href="../../api/share/wx.updateShareMenu.html">wx.updateShareMenu</a> 接口修改<code>toDoActivityId</code>属性可以把多个待办消息聚合为同一个，即转发相同<code>toDoActivityId</code>的群待办消息，只会出现一个待办消息气泡。<code>toDoActivityId</code>需要在转发前通过 <a href="(updatableMessage.createActivityId)">updatableMessage.createActivityId</a> 接口创建。</li></ol></div> <div class="fixed-translate" style="display:none;"><span>The translations are provided by WeChat Translation and are for reference only. 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