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POBlackberry java, Open dialog from non UI thread using synchronized
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14585901
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2013-01-29T15:02:42.227
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2013-01-30T19:30:27.010
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2013-01-29T15:13:31.463
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I want to open a dialog from a separate thread, but when using the <code>synchronized</code> way, I get an error. If I use the method <code>invokeAndWait</code> everything works fine, however I don't understand why I can't use <code>synchronized</code>. Here is the code I call in my screen: <pre><code>public void Login() { new HttpRequestDispatcher("http://www.google.com", "GET", this) { public void onSuccess(byte[] baos, String contentType) { synchronized(UiApplication.getEventLock()){ Dialog.alert("Cooooooool...."); } } public void onFail(String message){ synchronized(UiApplication.getEventLock()){ Dialog.alert(message); } } }.start(); } </code></pre> Here is the HttpRequestDispatcherThread: <pre><code>public abstract class HttpRequestDispatcher extends Thread { String url; String method; Screen scr; public HttpRequestDispatcher(String url, String method, Screen scr) { this.url = url; this.method = method; this.scr = scr; } public abstract void onFail(String message); public abstract void onSuccess(byte[] baos, String contentType); public void beforeSend() {} public void onComplete() {} public void run() { beforeSend(); try { HttpConnection connection = (HttpConnection) Connector.open(url); connection.setRequestMethod(method); int responseCode = connection.getResponseCode(); if (responseCode != HttpConnection.HTTP_OK) { onFail(connection.getResponseMessage()); connection.close(); return; } String contentType = connection.getHeaderField("Content-type"); int contentLength = (int) connection.getLength(); if (contentLength < 0) contentLength = 10000; ByteArrayOutputStream baos = new ByteArrayOutputStream(); InputStream responseData = connection.openInputStream(); byte[] buffer = new byte[contentLength]; int bytesRead = responseData.read(buffer); while (bytesRead > 0) { baos.write(buffer, 0, bytesRead); bytesRead = responseData.read(buffer); } baos.close(); connection.close(); onComplete(); onSuccess(baos.toByteArray(), contentType); } catch (Exception e) { } } } </code></pre> I get this error in the simulator: "JVM Error 104 Uncought: ArrayIndexOutOfBoundsException"
Tags
<java><multithreading><blackberry>
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Blackberry java, Open dialog from non UI thread using synchronized
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