Android: file upload in background

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http://stackoverflow.com – Hallo iam newbie with working android and php. iam using android to upload a files in background process. in android i using http method to upload a file to server. This code was work find but in logcat was appear a error code. Not error in Android code but error in result php code. Here the code in android side: class AutoSendHandler implements Runnable { File[] files; private final IActionListener helper; private String urlString = ""; public AutoSendHandler(File[] files, IActionListener helper) { this.files = files (HowTos)