java - Accept user input from Activity -

i have experience java, trying create android app , not know how accept user input. id of edit text enterrequestmessage , name of xml file activity_score_entry.xml. here beginning of java file.

import android.support.v7.app.appcompatactivity; import android.os.bundle;  public class scoreentry extends appcompatactivity {  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_score_entry);     } } 

you need access controls in xml

public class scoreentry extends appcompatactivity implements view.onclicklistener {      private edittext edittext;     private button button;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_score_entry);          edittext = (edittext) findviewbyid(r.id.edittext);         button = (button) findviewbyid(r.id.button);          button.setonclicklistener(this);     }      @override     public void onclick(view view) {         if (view.getid() == r.id.button) {             string value = edittext.gettext().tostring();              // use value here             log.d(scoreentry.class.getcanonicalname(), "the value is: " + value);         }     } } 

and in xml

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/activity_score_entry"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical">      <edittext         android:id="@+id/edittext"         android:layout_width="match_parent"         android:layout_height="wrap_content" />      <button         android:id="@+id/button"         android:layout_width="match_parent"         android:layout_height="wrap_content" />  </linearlayout> 

you can adjust code according needs.