Dialog not displaying when button is clicked - Android

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http://stackoverflow.com – I am trying to get a dialog box to display. Right now the program does not crash so there is no LogCat to display. When the button is clicked, nothing happens that can be seen. Is there a line of code I am missing that is preventing the dialog box from displaying? Thank you in advance for you help! Java code: public class Results extends Activity { Button detailsBtn; final Context context = this; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.resultsmain); detailsBtn = (But (HowTos)