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PO"Connection to the server was unsuccessful" when attempting to call javascript in a WebView
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copied!<p>Unlike other questions of the same title here, the PhoneGap/Android app is working fine and loads views and externally linked javascript files EXCEPT when I'm trying to call a javascript method from te Java side. I'm calling the method like so:</p> <pre><code>public void update(final String data) { appView.post(new Runnable(){ @Override public void run(){ loadUrl("javascript: dispatch('" + data + "')"); } }); } </code></pre> <p>And <code>update</code> is called in a non-UI thread.</p> <p>The thing is that I'm calling the javascript method and the functionality runs, works fine, and does what I expect, but after a few seconds, the app crashes with the error message "Connection to the server was unsuccessful" and the name of the method I'd called. I tried increasing the timeout as suggested in other questions, but it still crashes at the end of the timeout.</p> <p>Incidentally, I also get a warning about a WebView method being called from a non-UI thread, which is why I added the <code>post</code> call, so I'm not sure why that's happening, but it happens right before the timeout error in the log, so maybe it's related?</p> <p><strong>Edit</strong>: </p> <p>I get this error in the log right when the crash happens.</p> <pre><code>03-26 15:21:38.671: W/webview(3159): java.lang.Throwable: Warning: A WebView method was called on thread 'Thread-206'. All WebView methods must be called on the UI thread. Future versions of WebView may not support use on other threads. 03-26 15:21:38.671: W/webview(3159): at android.webkit.WebView.checkThread(WebView.java:9468) 03-26 15:21:38.671: W/webview(3159): at android.webkit.WebView.stopLoading(WebView.java:2253) 03-26 15:21:38.671: W/webview(3159): at org.apache.cordova.DroidGap$1$1.run(DroidGap.java:549) 03-26 15:21:38.671: W/webview(3159): at java.lang.Thread.run(Thread.java:856) 03-26 15:21:38.675: E/DroidGap(3159): DroidGap: TIMEOUT ERROR! - calling webViewClient </code></pre> <p>I was told the <code>appView.post</code> would avoid this because it would cause the <code>loadUrl</code> call to happen in the UI thread. Apparently this isn't the case?</p> <p><strong>EDIT</strong>:</p> <p>Problem solved. For the record, I changed the <code>loadURL</code> line to this:</p> <pre><code>sendJavascript("dispatch('" + data + "')"); </code></pre> <p>And it works.</p>

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