Master of Puppets: Yes, you could use Toast but if you want an actual popup dialog use AlertDialog:
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Your Title");
builder.setMessage("Some message...")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// TODO: handle the OK
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();