近期蘋果公司iOS 9系統策略更新，限制了http協議的訪問，此外應用需要在“Info.plist”中將要使用的URL Schemes列為白名單，才可正常檢查其他應用是否安裝。
受此影響，當你的應用在iOS 9中需要使用 QQ/QQ空間/支付寶/微信SDK 的相關能力（分享、收藏、支付、登錄等）時，需要在“Info.plist”里增加如下代碼：
<key>LSApplicationQueriesSchemes</key>
<array>
<!-- 微信 URL Scheme 白名單-->
<string>wechat</string>
<string>weixin</string>
<!-- 新浪微博 URL Scheme 白名單-->
<string>sinaweibohd</string>
<string>sinaweibo</string>
<string>sinaweibosso</string>
<string>weibosdk</string>
<string>weibosdk2.5</string>
<!-- QQ、Qzone URL Scheme 白名單-->
<string>mqqapi</string>
<string>mqq</string>
<string>mqqOpensdkSSoLogin</string>
<string>mqqconnect</string>
<string>mqqopensdkdataline</string>
<string>mqqopensdkgrouptribeshare</string>
<string>mqqopensdkfriend</string>
<string>mqqopensdkapi</string>
<string>mqqopensdkapiV2</string>
<string>mqqopensdkapiV3</string>
<string>mqzoneopensdk</string>
<string>wtloginmqq</string>
<string>wtloginmqq2</string>
<string>mqqwpa</string>
<string>mqzone</string>
<string>mqzonev2</string>
<string>mqzoneshare</string>
<string>wtloginqzone</string>
<string>mqzonewx</string>
<string>mqzoneopensdkapiV2</string>
<string>mqzoneopensdkapi19</string>
<string>mqzoneopensdkapi</string>
<string>mqzoneopensdk</string>
<!-- 支付寶 URL Scheme 白名單-->
<string>alipay</string>
<string>alipayshare</string>
</array>
轉自：
https://github.com/ChenYilong/iOS9AdaptationTips/commit/a6b680fbbcc15b4c0b560f273957cd3e65215c33
