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POGettring a reference to a managed ProgressDialog
 

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    <p>In my activity I need a <code>ProgressDialog</code> with a horizontal progress bar to visualise the progress of a background task. To make the activity care for the dialog e.g. in case of screen rotation, I would like to use a managed dialog created in <code>onCreateDialog</code>. The problem is that I need to update the progress bar of the dialog after it has been created and therefor I need a reference to the managed progress dialog: Does anyone know how to retrieve a reference to a dialog created by <code>onCreateDialog</code>?</p> <p>At the moment I am storing a reference to the dialog created in <code>onCreateDialog</code>, but that my fail with a <code>InvalidArgumentException</code> in the <code>onFinished()</code> method after the screen has been rotated (and the activity has been recreated):</p> <pre><code>public final class MyActivity extends Activity { private static final int DIALOG_PROGRESS = 0; private ProgressDialog progressDialog = null; // [...] @Override protected Dialog onCreateDialog(int id) { switch (id) { case DIALOG_PROGRESS: progressDialog = createProgressDialog(); return progressDialog; default: return super.onCreateDialog(id); } } // [...] public void updateProgress(int progress) { progressDialog.setProgress(0); } public void onFinished() { progressDialog.dismiss(); } // [...] } </code></pre> <p>I would have expected something like a <code>getDialog(int)</code> method in the <code>Activity</code> class to get a reference to a managed dialog, but this doesn't seem to exist. Any ideas?</p>
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