按键监听

 @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {

        if(keyCode==24||keyCode==25){
            return true;
        }
   		return super.onKeyDown(keyCode, event);
    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if(keyCode==134){
            webView.loadUrl("javascript:doorScreenCallOut('"+keyCode+"')");
            return true;
        }
       return super.onKeyDown(keyCode, event);
    }