AJAY PRAJAPATI

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Fatal Exception: java.lang.NullPointerException Attempt to invoke virtual method 'boolean java.lang.Thread.isAlive()' on a null object reference com.github.barteksc.pdfviewer.PDFView.a c.d.a.a.c.onPostExecute (Unknown Source:1)

if you are using HttpURLConnection connection; to load pdf from URL then put ``` @Override protected void onDestroy() { super.onDestroy(); connection.disconnect(); } ```