Disabling Android home button for industry application

Question

I\'m writing an industry application which will be used by traffic wardens to register offences through my program using forms.

The app is using a webview so it is just

Answer 1

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    getWindow().addFlags(  WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

}

@Override
public void onBackPressed() {

   return;
}

@Override
public void onAttachedToWindow()
{  

       this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);     
       super.onAttachedToWindow();

}