java - Text Appears after progress bar - Android -

i playing around progress bar in android , want text appear after progress bar has run. text appears @ same time. in wrong place? should be?

package com.example.bmi;  import android.os.bundle; import android.os.handler; import android.app.activity; import android.view.menu; import android.view.view; import android.widget.edittext; import android.widget.progressbar; import android.widget.textview;  public class mainactivity extends activity {     private progressbar progressbar;     private int progressstatus = 0;     private handler handler = new handler ();     //private textview textview;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);       }       public void calculateclickhandler(view view) {          if (view.getid() == r.id.button1) {              progressbar = (progressbar) findviewbyid(r.id.progressbar1);             //textview = (textview) findviewbyid(r.id.textview1);               // start long running operation in background thread               new thread(new runnable() {                  public void run() {                     while (progressstatus < 100) {                        progressstatus += 1;                             // update progress bar , display                              //current value in text view                             handler.post(new runnable() {                                           public void run() {                                            progressbar.setprogress(progressstatus);                                            //textview.settext(progressstatus+"/"+progressbar.getmax());                                         }                             });                                  try {                                 // sleep 200 milliseconds.                                  //just display progress                                 thread.sleep(50);                               } catch (interruptedexception e) {                                   e.printstacktrace();                                 }                  }                 }            }).start();                edittext weighttext = (edittext) findviewbyid(r.id.edittext1);                 edittext heighttext = (edittext) findviewbyid(r.id.edittext2);                 textview result = (textview) findviewbyid(r.id.textview4);                  float weight = float.parsefloat(weighttext.gettext().tostring());                 float height = float.parsefloat(heighttext.gettext().tostring());                  float bmi = calcbmi(weight, height);                 float roundedbmi = (float) (math.round(bmi*100.0)/100.0);                  string yofat = fat(roundedbmi);                  result.settext("your bmi is: " + roundedbmi + "\n" + yofat);            }      }       private float calcbmi(float weight, float height) {         // todo auto-generated method stub         return (float) (weight / (height * height));     }       private string fat (float bmi) {         if (bmi < 16) {             return "yo skinny ass needs cake!";         }         else if (bmi < 18.5) {             return "stop eating them salads!";         }         else if (bmi < 25) {             return "grrrr, way it!";         }         else if (bmi < 30) {             return "put down cupcake!";         }         else {             return "ohh fat, love cake!";         }     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.main, menu);         return true;     }  } 

the code directly under instantiated thread doesn't wait thread finish runnable before it's executed.

instead, re-enter ui thread @ end of new thread's runnable , set text:

    new thread(new runnable() {         @override         public void run() {             while (progressstatus < 100) {                 // progress update...             }              // progress finished, re-enter ui thread , set text             handler.post(new runnable() {                 @override                 public void run() {                     edittext weighttext = (edittext) findviewbyid(r.id.edittext1);                     edittext heighttext = (edittext) findviewbyid(r.id.edittext2);                     textview result = (textview) findviewbyid(r.id.textview4);                      float weight = float.parsefloat(weighttext.gettext().tostring());                     float height = float.parsefloat(heighttext.gettext().tostring());                      float bmi = calcbmi(weight, height);                     float roundedbmi = (float) (math.round(bmi*100.0)/100.0);                      string yofat = fat(roundedbmi);                      result.settext("your bmi is: " + roundedbmi + "\n" + yofat);                 }             });         }     }).start();