private class JsBridge implements JsCallback {

    /**
     * @param handlerName method required
     * @param jsonData    data passed through from javascript
     * @param jsCallback  A callback to trigger when handler specified by handlername has finished,could be null
     */
    @JavascriptInterface
    public void callHandler(final String handlerName,final String jsonData,final String jsCallback) {
        Log.d(App.TAG,"Bridge call from JS,received " + handlerName);
    }

    @JavascriptInterface
    public void onPageLoad(final String pageName) {
        Log.d(App.TAG,received onPageLoad - we have the page name " + pageName);
    }

这工作正常,直到我使用proguard进行发布构建.我已经尝试了一些其他的SO答案,并在我的proguard文件中添加了以下行,但它没有帮助.结果是调试版本我得到了回调,发布版本我得不到回调.

-keep public class * implements com.mixcloud.player.view.JsCallback

-keepclassmembers class * implements com.mixcloud.player.view.JsCallback {
    <methods>;
}
-keep public class * implements com.mixcloud.player.view.JsCallback

-keepattributes *Annotation*
-keepattributes JavascriptInterface
-keep public class com.mixcloud.player.view.JSRefreshWebView
-keep public class com.mixcloud.player.view.JSRefreshWebView$JsBridge
-keep public class * implements com.mixcloud.player.view.JSRefreshWebView$JsBridge
-keepclassmembers class * implements com.mixcloud.player.view.JSRefreshWebView$JsBridge {
    <methods>;
}