javascript - 使用 JSNI 从 GWT 向 Google Analytics 发送事件

Question

我的 HTML 文件中有 和 之间的所有 Google Analytics(分析)代码。这些统计数据得到正确处理。

在我的 onclick 事件之后，下面的函数被调用，我想向 Google Analytics 发送一个事件，但从未收到。我做错了什么？

public static native void googleAnalyticsEvent(String boxId) /*-{
_gaq.push(['_trackEvent', boxId , 'Click']);
}-*/;

仅供引用，如果我将此代码替换为以下代码，则会正确显示警报:

public static native void googleAnalyticsEvent(String boxId) /*-{
alert(boxId);
}-*/;

Answer 1

尝试:

public static native void googleAnalyticsEvent(String boxId) /*-{
    $wnd._gaq.push(['_trackEvent', boxId , 'Click']);
}-*/;

来自 https://developers.google.com/web-toolkit/doc/1.6/DevGuideCodingBasics#DevGuideJavaScriptNativeInterface

"Note that the code did not reference the JavaScript window object directly inside the method. When accessing the browser's window and document objects from JSNI, you must reference them as $wnd and $doc, respectively. Your compiled script runs in a nested frame, and $wnd and $doc are automatically initialized to correctly refer to the host page's window and document."