I've created a simple custom dialog that asks users to "Press a key".
The purpose of this is so that I can map whatever key they press to a
function in the app. Unfortunately, I can not figure out what is the
correct interface to use to detect the key events. My class looks like
this:
----------------------
public class ScancodeDialog extends Dialog implements OnKeyListener
{
public ScancodeDialog( Context context )
{
super(context);
setContentView( R.layout.scancode_dialog );
setTitle( "Key Listener" );
TextView text = (TextView) findViewById( R.id.scancode_text );
text.setText( "Please press a button.." );
ImageView image = (ImageView)
findViewById( R.id.scancode_image );
image.setImageResource( R.drawable.icon );
getWindow().setFlags( WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM );
}
@Override
public boolean onKey( DialogInterface dialog, int keyCode,
KeyEvent event )
{
if( keyCode != KeyEvent.KEYCODE_MENU )
dismiss();
return true;
}
}
------------------------------
I've tried it with and without the getWindow().setFlags() line (that
was a suggestion from another question, which didn't help me in my
case). Obviously I will add more functionality to the class later, but
for now the dialog box should close whenever the user presses a key.
However, onKey is never called.
I originally tried using the key listener interface from View:
import android.view.View.OnKeyListener;
But since a Dialog is not a view, this didn't work. I also tried the
one from DialogInterface:
import android.content.DialogInterface.OnKeyListener;
This seemed like a better choice, since the API indicates that Dialog
implements DialogInterface, but I am still not receiving the key
events. Any suggestions I can try?
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