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POfindViewById returns null when invoked from non-Activity
 

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    <p>I am attempting to develop an Android application using Scala.</p> <p>When my application launches it immediately displays a dialog as follows:</p> <pre><code>override def onCreate(savedInstanceState: Bundle) { super.onCreate(savedInstanceState) competitionSetupDialogFragment.show(getFragmentManager(), HomeScreenActivity.CompetitionDialog) } override def onStart() { super.onStart resourceHelper.setActivity(this) } </code></pre> <p>My fragment is as follows:</p> <pre><code>class CompetitionSetupDialogFragment extends DialogFragment { @Inject var competitionSetupDialogHandler: CompetitionSetupDialogHandler = null @Inject var resourceHelper: ResourceHelper = null override def onCreateDialog(savedInstanceState: Bundle): Dialog = { val builder = new AlertDialog.Builder(getActivity()) builder.setMessage(getString(R.string.competitionSetupDialogMessage)) .setCancelable(false) .setView(getActivity().getLayoutInflater.inflate(R.layout.competition_setup, null)) .setNegativeButton(R.string.cancel, new OnClickListener { def onClick(dialog: DialogInterface, which: Int) { dismiss() } }) .setPositiveButton(R.string.create, new OnClickListener { def onClick(dialog: DialogInterface, which: Int) { val competitionNameInput = resourceHelper.findViewById(R.id.competitionNameInput).asInstanceOf[EditText] val numberOfPlayersInput = resourceHelper.findViewById(R.id.numberOfPlayersInput).asInstanceOf[EditText] val numberOfSubsInput = resourceHelper.findViewById(R.id.numberOfSubsInput).asInstanceOf[EditText] val lengthOfHalfInput = resourceHelper.findViewById(R.id.lengthOfHalfInput).asInstanceOf[EditText] competitionSetupDialogHandler.retrieveValuesAndSave(competitionNameInput, numberOfPlayersInput, numberOfSubsInput, lengthOfHalfInput) } }) builder.create() } } </code></pre> <p>Lastly, the ResourceHelper contains the following:</p> <pre><code>public View findViewById(int viewID) { return activity.findViewById(viewID); } </code></pre> <p>My problem is that my resourceHelper.findViewById always returns null, even though these are valid views.</p> <p>My thinking is that by the time the onClick() is invoked, the view has been destroyed, or something similar. How can I get around this issue?</p> <p>One thing to add here is that my dialog displays fine, it is only when onClick is performed that I have an issue</p>
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