dialog - Android SetText in Activity from AlertDialog -


i have textview on mainactivity, , create alertdialog follows:

    textviewpropanol = (textview) findviewbyid(r.id.textviewpropranol);     boton_propanol = (togglebutton) findviewbyid(r.id.button_propanol);     boton_propanol.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             if(boton_propanol.ischecked()) {                 textviewpropanol.settext("activacted");                 final alertdialog.builder a_builder = new alertdialog.builder(medicamentosactivity.this);                 a_builder.setcancelable(false)                         .setitems(r.array.medipropanolol, new dialoginterface.onclicklistener() {                             @override                             public void onclick(dialoginterface dialog, int which) {                                 textviewpropanol.settext();                              }                         })                         .setnegativebutton("cancel", new dialoginterface.onclicklistener() {                             @override                             public void onclick(dialoginterface dialog, int which) {                                 dialog.cancel();                             }                         }) ;                 alertdialog alert = a_builder.create();                 alert.settitle("medicina");                 alert.show();             }             else{                 textviewpropanol.settext("des");}         }     });

i want set text in textviewpropanol option selected alertdialog.

string array[] = new string[]{}; boton_propanol.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             if(boton_propanol.ischecked()) {                 array = getresources().getstringarray(r.array.medipropanolol);                 textviewpropanol.settext("activacted");                 final alertdialog.builder a_builder = new alertdialog.builder(medicamentosactivity.this);                 a_builder.setcancelable(false)                         .setitems(r.array.medipropanolol, new dialoginterface.onclicklistener() {                             @override                             public void onclick(dialoginterface dialog, int which) {                                 textviewpropanol.settext(array[which]);                              }                         })                         .setnegativebutton("cancel", new dialoginterface.onclicklistener() {                             @override                             public void onclick(dialoginterface dialog, int which) {                                 dialog.cancel();                             }                         }) ;                 alertdialog alert = a_builder.create();                 alert.settitle("medicina");                 alert.show();             }             else{                 textviewpropanol.settext("des");}         }     });

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