android Dialog&AlertDialog

Dialog dialog = new Dialog(context,R.style.AppBaseTheme);  
        
        wifiView = AppData.inflater.inflate(R.layout.wifi_ip_info_form, null);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setContentView(wifiView); 
        /*
        Window dialogWindow = dialog.getWindow();
        //getActivity().getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
                //WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
 
        dialogWindow.setLayout(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
        dialogWindow.setGravity(Gravity.TOP);
        dialog.show();*/
        dialog.show();

String title = " ""+itemInfo.itemSSID+"" ";
View password_view = AppData.inflater.inflate(R.layout.wifi_cancel_connect, null);
TextView password_title = (TextView)password_view.findViewById(R.id.wifi_show_info);
password_title.setText(title);

final AlertDialog alertDialog = new AlertDialog.Builder(WirelessNetworkActivity.this).create();
alertDialog.setView(password_view);
Window window = alertDialog.getWindow();
WindowManager.LayoutParams lp = window.getAttributes();
alertDialog.show();
lp.width = 920;
lp.height = 300;
lp.alpha = 0.9f;
window.setAttributes(lp);