调整callback位置

20181025/SDK.ts

@@ -615,6 +615,7 @@ class WechatSDK {
     // 分享
     public addShareEvent(shareInfo: shareInfo, callback?) {
         const that = this;
+        if(callback) callback();
         const ShareParams = {
             title: shareInfo.title ? shareInfo.title : SDKConfig.shareTitle,
             imageUrl: shareInfo.image ? shareInfo.image : SDKConfig.shareImageUrl,
@@ -628,7 +629,6 @@ class WechatSDK {
             return ShareParams
         })
         that.shareInit()
-        if(callback) callback();
     }
     public ShareApp(params?: string) {
         const that = this