android - Starting new Activity in OnCreate -

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i got android app based on 2 activities. main activity input field , button user information. when user press button barcodescanner (zxing) start.

every thing works perfect. know try check in oncreate if user information known. if true -> start barcodescanner. looks barcodescanner activity starts twice, because: pressing button once: annother barcodescanner wil active. pressing button twice: main activty active.

this check inside oncreate:

if(pref.length() == 6){        startactivityforresult(intent, 0);   }

and function called when clicking button:

 public void onclick(view view) {         switch (view.getid()) {         case r.id.button1:              final edittext edit =  (edittext) findviewbyid(r.id.panelid);                if(edit.gettext().tostring().length() == 6){                 string temp = edit.gettext().tostring();                 log.e("click", temp);                 editor e = this.getpreferences(context.mode_private).edit();                 e.putstring("panelid", temp);                 e.commit();                  startactivityforresult(intent, 0);             } else {                 toast.maketext(this, "ongeldige invoer (6 cijfer id)", toast.length_long).show();             }              break;         }     }

what do wrong?

your trouble seems more how managing lifecycle of activity. if post activity's oncreate() method's code, might able see better you're trying accomplish , suggest solution accordingly.


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