android - Edittext.settext() Don't show text in onActivityResult() -

i trying add text in edittext on activityresult, doesn't work. here have done:

  private view getnumber() {           layoutinflater inflater = layoutinflater.from(getbasecontext());         viewnumber = inflater.inflate(r.layout.stepper_layout, null, false);          number_edittext = (appcompatedittext) viewnumber.findviewbyid(r.id.pic_edittext_number);         relativelayout numberpickerlayout = (relativelayout) viewnumber.findviewbyid(r.id.numberpickerlayout);         relativelayout pic_number = (relativelayout) viewnumber.findviewbyid(r.id.pic_number);         button numbernext = (button) viewnumber.findviewbyid(r.id.numbernext);         numberpickerlayout.setvisibility(view.visible);          pic_number.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                 intent contactpickerintent = new intent(intent.action_pick,                         contactscontract.commondatakinds.phone.content_uri);                 startactivityforresult(contactpickerintent, contact_picker_result);             }         });          numbernext.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                 num = number_edittext.gettext().tostring();                 if (textutils.isempty(num)) {                     verticalstepperform.setactivestepasuncompleted("please enter or select number");                 } else {                     checknumber(num);                 }             }         });           return viewnumber;     }       @override     protected void onactivityresult(int requestcode, int resultcode, intent data) {         if (resultcode == result_ok && requestcode == contact_picker_result) {             cursor cursor = null;              uri uri = data.getdata();             //query content uri             cursor = getcontentresolver().query(uri, null, null, null, null);             cursor.movetofirst();             int phoneindex = cursor.getcolumnindex(contactscontract.commondatakinds.phone.number);             phoneno = cursor.getstring(phoneindex);             number_edittext.settext(phoneno);         }     } 

try one..

public class mainactivity extends appcompatactivity {

private static final int contact_picker_result = 100; // create variable textview mtextview; button pickcontactbtn;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_test);      // find text view id here     mtextview = (textview) findviewbyid(r.id.textview1);     // work here     mtextview.settext("hello world!");      pickcontactbtn= (button) findviewbyid(r.id.pickcontactbtn);     pickcontactbtn.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             intent contactpickerintent = new intent(intent.action_pick,                     contactscontract.commondatakinds.phone.content_uri);             startactivityforresult(contactpickerintent, contact_picker_result);          }     });   }  @override protected void onactivityresult(int requestcode, int resultcode, intent data) {     if (resultcode == result_ok && requestcode == contact_picker_result) {         cursor cursor = null;         uri uri = data.getdata();         //query content uri         cursor = getcontentresolver().query(uri, null, null, null, null);         cursor.movetofirst();         int phoneindex = cursor.getcolumnindex(contactscontract.commondatakinds.phone.number);         string phoneno = cursor.getstring(phoneindex);         mtextview.settext(phoneno);     } } 

}

xml

<?xml version="1.0" encoding="utf-8"?> <relativelayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context=".mainactivity">     <textview         android:id="@+id/textview1"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="hello_world"         android:textsize="36sp"         android:textcolor="@android:color/holo_blue_dark"         android:textstyle="bold"         android:layout_marginleft="12dp"         android:layout_margintop="12dp"         />      <button         android:id="@+id/pickcontactbtn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignleft="@+id/textview1"         android:layout_alignstart="@+id/textview1"         android:layout_below="@+id/textview1"         android:layout_marginleft="18dp"         android:layout_marginstart="18dp"         android:layout_margintop="28dp"         android:text="pick contact" /> </relativelayout>