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POBasic Android AsyncTask, an error occurred while executing doInBackground()
 

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  1. POBasic Android AsyncTask, an error occurred while executing doInBackground()
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    <p>[solved]</p> <p>I'm trying to create a basic thread using AsyncTask as shown in the documentation for the Android API. However, I'm coming across an error when trying to execute the most simplest of threads.</p> <pre><code> AsyncTask task = new AsyncTask&lt;Void, Integer, Boolean&gt;() { @Override protected Boolean doInBackground(Void... arg0) { try { Thread.sleep(6000); System.out.println("DELAYED TEST TEST TEST"); }catch(Exception e) { } return true; } }; </code></pre> <p>Logcat entry:</p> <pre><code>E/AndroidRuntime(21215): FATAL EXCEPTION: AsyncTask #1 E/AndroidRuntime(21215): java.lang.RuntimeException: An error occured while executing doInBackground() E/AndroidRuntime(21215): at android.os.AsyncTask$3.done(AsyncTask.java:200) E/AndroidRuntime(21215): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274) E/AndroidRuntime(21215): at java.util.concurrent.FutureTask.setException(FutureTask.java:125) E/AndroidRuntime(21215): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308) E/AndroidRuntime(21215): at java.util.concurrent.FutureTask.run(FutureTask.java:138) E/AndroidRuntime(21215): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088) E/AndroidRuntime(21215): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) E/AndroidRuntime(21215): at java.lang.Thread.run(Thread.java:1027) E/AndroidRuntime(21215): Caused by: java.lang.ClassCastException: [Ljava.lang.Object; E/AndroidRuntime(21215): at hlf.scenes.Intro$2.doInBackground(Intro.java:1) E/AndroidRuntime(21215): at android.os.AsyncTask$2.call(AsyncTask.java:185) E/AndroidRuntime(21215): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306) E/AndroidRuntime(21215): ... 4 more </code></pre> <p>If anyone could help me solve this I'd be really appreciative! Thanks</p> <p>Fix:</p> <pre><code>AsyncTask&lt;Void, Integer, Boolean&gt; task = new AsyncTask&lt;Void, Integer, Boolean&gt;() </code></pre>
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    1. COtry this ..... AsyncTask<Void, Integer, Boolean> task = new AsyncTask<Void, Integer, Boolean>()
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    2. COIs the task instance created on the UI thread?
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    3. CO@kumar : i don't think so. generic types are not compiled.
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