java - Pass data from dialog to activity Android -

i have problem. made method creates dialog own layout. , have no idea how pass values (strings) editext , asing variable in activity. in comments can see how trying solve this.

java method

public void makedialog(){         // custom dialog         final dialog dialog = new dialog(context);         dialog.setcontentview(r.layout.dialog_ip);         dialog.settitle("ip connection");  // todo passing value dialog activity //        final edittext ipvalueconnection = (edittext)findviewbyid(r.id.ipvalueconnection); //        ipvalueconnection.setonclicklistener(this); //        edittext portvalueconnection = (edittext)findviewbyid(r.id.portvalueconnection); //        toast.maketext(context, ipvalueconnection.gettext().tostring(), toast.length_long).show();          button dialogbuttonlogin = (button) dialog.findviewbyid(r.id.dialogbuttonlogin);         // if button clicked, close custom dialog         dialogbuttonlogin.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                   trytoconnect();                 dialog.dismiss();              }         });             // set custom dialog components - text, image , button //        textview text = (textview) dialog.findviewbyid(r.id.ip);          dialog.show();      } 

xml layout

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical"     android:layout_width="wrap_content"     android:layout_height="wrap_content">     <imageview         android:src="@drawable/antena"         android:layout_width="220dp"         android:layout_height="120dp"         android:scaletype="centerinside"         android:background="#ffffbb33"         android:contentdescription="@string/app_name"         android:adjustviewbounds="true"          />     <edittext         android:id="@+id/ipvalueconnection"         android:inputtype="textemailaddress"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_margintop="16dp"         android:layout_marginleft="4dp"         android:layout_marginright="4dp"         android:layout_marginbottom="4dp"         android:hint="ip" />     <edittext         android:id="@+id/portvalueconnection"         android:inputtype="textpassword"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_margintop="4dp"         android:layout_marginleft="4dp"         android:layout_marginright="4dp"         android:layout_marginbottom="16dp"         android:fontfamily="sans-serif"         android:hint="port"/>     <button         android:id="@+id/dialogbuttonlogin"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:text="login"         android:layout_margintop="5dp"         /> </linearlayout> 

the error getting means reference edittext cannot found in current layout file. have find edittext in custom dialog view instead of activity view.

so instead of:

 final edittext ipvalueconnection =(edittext)findviewbyid(r.id.ipvalueconnection); 

use:

 final edittext ipvalueconnection =(edittext)dialog.findviewbyid(r.id.ipvalueconnection);