android - progress dialog in main activity's onCreate not shown -


after splash screen, takes 6 sec load oncreate contents in main activity. want show progress dialog while loading , here's did:

import ...  private progressdialog mainprogress;  public void oncreate(bundle davedinstancestate){     super.oncreate(savedinstancestate);      setcontentview(r.layout.main);      mprogress = new progressdialog (main.this);     mprogress.setprogressstyle(progressdialog.style_horizontal);     mprogress.setmessage("loading... please wait");     mprogress.setindeterminate(false);     mprogress.setmax(100);     mprogress.setprogress(0);     mprogress.show();      ---some code---      mprogress.setprogress(50);      ---some code---      mprogress.setprogress(100);     mprogress.dismiss(); }

and doesn't work... screen stays black 5-6 sec , load main layout. dont know part did wrong :*(

you need start busy code in other thread (than ui thread).
in activity create progressdialog , close in thread 

mprogress = new progressdialog (main.this);  runnable runnable = new runnable() {     @override     public void run() {         // code needs 6 seconds execution          // after finishing, close progress bar         mprogress.dismiss();     } };  new thread(runnable).start();

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