android - Hide a EditText & make it visible in AsyncTask -

i making android app send id_user , id_status remote database asynctask. if success == 1, edittext , button visible automatically.

commentactivity

package com.portalalumni;  import java.util.arraylist; import java.util.hashmap; import java.util.list;  import org.apache.http.namevaluepair; import org.apache.http.message.basicnamevaluepair; import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject; import android.os.asynctask; import android.os.bundle; import android.os.handler; import android.app.activity; import android.app.progressdialog; import android.content.intent; import android.util.log; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.adapterview; import android.widget.button; import android.widget.edittext; import android.widget.listview; import android.widget.textview; import android.widget.toast;  public class commentactivity extends activity {  sessionmanager session; boolean isvisible;      // progress dialog         private progressdialog pdialog;          // creating json parser object          jsonparser jparser = new jsonparser();          // url           private static string url_cek_pendidikan = "http://192.168.43.13/alumni/cek_pendidikan.php";          // json node names         public static final string tag_success = "success";           string id_user,email,id_status;         private edittext comment;         button btnaddcomment;          private final handler handler = new handler();      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_comment);          session = new sessionmanager(getapplicationcontext());         toast.maketext(getapplicationcontext(),                 "user login status: " + session.isloggedin(), toast.length_long)                 .show();          session.checklogin();          //hashmap login         hashmap<string, string> user = session.getuserdetails();         id_user = user.get(sessionmanager.key_iduser);          bundle extras = getintent().getextras();         if(extras!=null){             id_status = extras.getstring("id_status");         }          // loading status , comment in background thread         new loadcekpenddkactivity().execute();          comment = (edittext) findviewbyid(r.id.comment);          btnaddcomment = (button) findviewbyid(r.id.dm_send);          // button click event         btnaddcomment.setonclicklistener(new view.onclicklistener() {              @override             public void onclick(view view) {                 // creating comment in background thread                 new loadupdateactivity().execute();                  //comment.gettext().clear();             }         });          // show button in action bar.         getactionbar().setdisplayhomeasupenabled(true);      }      public void set_visibility_visible(){         this.isvisible = true;     }      class loadcekpenddkactivity extends asynctask<string, string, string> {          /**          * before starting background thread show progress dialog          * */         @override         protected void onpreexecute() {             super.onpreexecute();             /*pdialog = new progressdialog(commentactivity.this);             pdialog.setmessage("loading..");             pdialog.setindeterminate(false);             pdialog.setcancelable(true);             pdialog.show();*/         }          /**          * creating product          * */         protected string doinbackground(string... args) {              // building parameters             list<namevaluepair> params = new arraylist<namevaluepair>();             params.add(new basicnamevaluepair("id_user", id_user));             params.add(new basicnamevaluepair("id_status", id_status));              // getting json object             // note create product url accepts post method             jsonobject json = jparser.makehttprequest(url_cek_pendidikan,"get", params);              // check log cat fro response             log.d("update", json.tostring());              // check success tag             try {                 int success = json.getint(tag_success);                  if (success == 1) {                     comment.setvisibility(view.visible);                     btnaddcomment.setvisibility(view.visible);                  } else {                     comment.setvisibility(view.gone);                     btnaddcomment.setvisibility(view.gone);                  }             } catch (jsonexception e) {                 e.printstacktrace();             }              return null;         }          /**          * after completing background task dismiss progress dialog          * **/         protected void onpostexecute(string file_url) {             // dismiss dialog once done             //pdialog.dismiss();         }      }  } 

after adding timer task , timer run code. app crashed , got following logcat error:

04-23 22:15:34.359: e/androidruntime(1050): fatal exception: asynctask #4 04-23 22:15:34.359: e/androidruntime(1050): java.lang.runtimeexception: error occured while executing doinbackground() 04-23 22:15:34.359: e/androidruntime(1050):     @ android.os.asynctask$3.done(asynctask.java:278) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.util.concurrent.futuretask$sync.innersetexception(futuretask.java:273) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.util.concurrent.futuretask.setexception(futuretask.java:124) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.util.concurrent.futuretask$sync.innerrun(futuretask.java:307) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.util.concurrent.futuretask.run(futuretask.java:137) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.os.asynctask$serialexecutor$1.run(asynctask.java:208) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1076) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:569) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.lang.thread.run(thread.java:856) 04-23 22:15:34.359: e/androidruntime(1050): caused by: android.view.viewrootimpl$calledfromwrongthreadexception: original thread created view hierarchy can touch views. 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.viewrootimpl.checkthread(viewrootimpl.java:3939) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.viewrootimpl.requestlayout(viewrootimpl.java:701) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.requestlayout(view.java:12555) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.requestlayout(view.java:12555) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.requestlayout(view.java:12555) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.requestlayout(view.java:12555) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.support.v4.widget.drawerlayout.requestlayout(drawerlayout.java:762) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.requestlayout(view.java:12555) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.widget.relativelayout.requestlayout(relativelayout.java:268) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.requestlayout(view.java:12555) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.setflags(view.java:6659) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.view.view.setvisibility(view.java:4564) 04-23 22:15:34.359: e/androidruntime(1050):     @ com.portalalumni.commentactivity$loadcekpenddkactivity.doinbackground(commentactivity.java:521) 04-23 22:15:34.359: e/androidruntime(1050):     @ com.portalalumni.commentactivity$loadcekpenddkactivity.doinbackground(commentactivity.java:1) 04-23 22:15:34.359: e/androidruntime(1050):     @ android.os.asynctask$2.call(asynctask.java:264) 04-23 22:15:34.359: e/androidruntime(1050):     @ java.util.concurrent.futuretask$sync.innerrun(futuretask.java:305) 04-23 22:15:34.359: e/androidruntime(1050):     ... 5 more 04-23 22:15:35.999: e/windowmanager(1050): activity com.portalalumni.commentactivity has leaked window com.android.internal.policy.impl.phonewindow$decorview@41439380 added here 04-23 22:15:35.999: e/windowmanager(1050): android.view.windowleaked: activity com.portalalumni.commentactivity has leaked window com.android.internal.policy.impl.phonewindow$decorview@41439380 added here 04-23 22:15:35.999: e/windowmanager(1050):  @ android.view.viewrootimpl.<init>(viewrootimpl.java:343) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.view.windowmanagerimpl.addview(windowmanagerimpl.java:245) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.view.windowmanagerimpl.addview(windowmanagerimpl.java:193) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.view.windowmanagerimpl$compatmodewrapper.addview(windowmanagerimpl.java:118) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.view.window$localwindowmanager.addview(window.java:537) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.dialog.show(dialog.java:274) 04-23 22:15:35.999: e/windowmanager(1050):  @ com.portalalumni.commentactivity$loadcekpenddkactivity.onpreexecute(commentactivity.java:497) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.os.asynctask.executeonexecutor(asynctask.java:561) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.os.asynctask.execute(asynctask.java:511) 04-23 22:15:35.999: e/windowmanager(1050):  @ com.portalalumni.commentactivity.oncreate(commentactivity.java:105) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.activity.performcreate(activity.java:4465) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1049) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.activitythread.performlaunchactivity(activitythread.java:1919) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.activitythread.handlelaunchactivity(activitythread.java:1980) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.activitythread.access$600(activitythread.java:122) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.activitythread$h.handlemessage(activitythread.java:1146) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.os.handler.dispatchmessage(handler.java:99) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.os.looper.loop(looper.java:137) 04-23 22:15:35.999: e/windowmanager(1050):  @ android.app.activitythread.main(activitythread.java:4340) 04-23 22:15:35.999: e/windowmanager(1050):  @ java.lang.reflect.method.invokenative(native method) 04-23 22:15:35.999: e/windowmanager(1050):  @ java.lang.reflect.method.invoke(method.java:511) 04-23 22:15:35.999: e/windowmanager(1050):  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:784) 04-23 22:15:35.999: e/windowmanager(1050):  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:551) 04-23 22:15:35.999: e/windowmanager(1050):  @ dalvik.system.nativestart.main(native method) 04-23 22:15:36.149: e/windowmanager(1050): activity com.portalalumni.commentactivity has leaked window com.android.internal.policy.impl.phonewindow$decorview@4145bd68 added here 04-23 22:15:36.149: e/windowmanager(1050): android.view.windowleaked: activity com.portalalumni.commentactivity has leaked window com.android.internal.policy.impl.phonewindow$decorview@4145bd68 added here 04-23 22:15:36.149: e/windowmanager(1050):  @ android.view.viewrootimpl.<init>(viewrootimpl.java:343) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.view.windowmanagerimpl.addview(windowmanagerimpl.java:245) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.view.windowmanagerimpl.addview(windowmanagerimpl.java:193) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.view.windowmanagerimpl$compatmodewrapper.addview(windowmanagerimpl.java:118) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.view.window$localwindowmanager.addview(window.java:537) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.dialog.show(dialog.java:274) 04-23 22:15:36.149: e/windowmanager(1050):  @ com.portalalumni.commentactivity$loadstatusactivity.onpreexecute(commentactivity.java:228) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.os.asynctask.executeonexecutor(asynctask.java:561) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.os.asynctask.execute(asynctask.java:511) 04-23 22:15:36.149: e/windowmanager(1050):  @ com.portalalumni.commentactivity.oncreate(commentactivity.java:106) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.activity.performcreate(activity.java:4465) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1049) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.activitythread.performlaunchactivity(activitythread.java:1919) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.activitythread.handlelaunchactivity(activitythread.java:1980) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.activitythread.access$600(activitythread.java:122) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.activitythread$h.handlemessage(activitythread.java:1146) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.os.handler.dispatchmessage(handler.java:99) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.os.looper.loop(looper.java:137) 04-23 22:15:36.149: e/windowmanager(1050):  @ android.app.activitythread.main(activitythread.java:4340) 04-23 22:15:36.149: e/windowmanager(1050):  @ java.lang.reflect.method.invokenative(native method) 04-23 22:15:36.149: e/windowmanager(1050):  @ java.lang.reflect.method.invoke(method.java:511) 04-23 22:15:36.149: e/windowmanager(1050):  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:784) 04-23 22:15:36.149: e/windowmanager(1050):  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:551) 04-23 22:15:36.149: e/windowmanager(1050):  @ dalvik.system.nativestart.main(native method) 

doinbackground() runs in separate thread can't touch views of main activity inside it, that's why you're seeing calledfromwrongthreadexception. instead, can call in any method of asynctask doinbackground().

as seems you're testing result of something, recommend setting in onpostexecute() method next called once out of doinbackground() method.