diff --git a/jsbridge/src/main/java/com/apkfuns/jsbridge/JBCallbackImpl.java b/jsbridge/src/main/java/com/apkfuns/jsbridge/JBCallbackImpl.java
index 905dbbe..2b0d900 100644
--- a/jsbridge/src/main/java/com/apkfuns/jsbridge/JBCallbackImpl.java
+++ b/jsbridge/src/main/java/com/apkfuns/jsbridge/JBCallbackImpl.java
@@ -1,5 +1,6 @@
 package com.apkfuns.jsbridge;
 
+import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
 import android.support.annotation.NonNull;
@@ -47,10 +48,29 @@ public void apply(Object... args) {
         mHandler.post(new Runnable() {
             @Override
             public void run() {
-                if (method.getModule().mWebView instanceof WebView) {
-                    ((WebView) method.getModule().mWebView).loadUrl(builder.toString());
-                } else if (method.getModule().mWebView instanceof IWebView) {
-                    ((IWebView) method.getModule().mWebView).loadUrl(builder.toString());
+                // Issue #34: an asynchronous callback.apply (for example
+                // after a network request finishes) loses its result
+                // because loadUrl("javascript:...") is unreliable on
+                // modern WebView when called outside of an active JS
+                // event. evaluateJavascript was added in API 19 for
+                // exactly this case so prefer it when available.
+                Object webView = method.getModule().mWebView;
+                if (webView instanceof WebView) {
+                    WebView wv = (WebView) webView;
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+                        // Strip the leading "javascript:" prefix that
+                        // loadUrl required, evaluateJavascript wants
+                        // raw script.
+                        String js = builder.toString();
+                        if (js.startsWith("javascript:")) {
+                            js = js.substring("javascript:".length());
+                        }
+                        wv.evaluateJavascript(js, null);
+                    } else {
+                        wv.loadUrl(builder.toString());
+                    }
+                } else if (webView instanceof IWebView) {
+                    ((IWebView) webView).loadUrl(builder.toString());
                 }
             }
         });