android - Editext (Dialog) Value is empty? -


i try use edittext in dialog. use sample developer.android.com (http://developer.android.com/guide/topics/ui/dialogs.html). want value of edittext when press positive button.
code 

    public dialog oncreatedialog() {     alertdialog.builder builder = new alertdialog.builder(main_list.this);     // layout inflater    final layoutinflater inflater = main_list.this.getlayoutinflater();       builder.setview(inflater.inflate(r.layout.serie_add, null))             // add action buttons             .setpositivebutton(r.string.search, new dialoginterface.onclicklistener() {                 @override                 public void onclick(dialoginterface dialog, int id) {                     view promptsview = inflater.inflate(r.layout.serie_add, null);                     final edittext userinput = (edittext) promptsview                             .findviewbyid(r.id.series);                      intent intent = new intent();                     intent.setclass(main_list.this, add_series.class);                     intent.putextra("name", userinput.gettext());                     startactivity(intent);                 }             })             .setnegativebutton(r.string.cancel, new dialoginterface.onclicklistener() {                 public void onclick(dialoginterface dialog, int id) {                  }             });     return builder.create(); }

rewrite code as:

public dialog oncreatedialog() { alertdialog.builder builder = new alertdialog.builder(main_list.this); // layout inflater final layoutinflater inflater = main_list.this.getlayoutinflater();  view view = inflater.inflate(r.layout.serie_add, null); final edittext userinput = (edittext) view                         .findviewbyid(r.id.series);  builder.setview(view)         // add action buttons         .setpositivebutton(r.string.search, new dialoginterface.onclicklistener() {             @override             public void onclick(dialoginterface dialog, int id) {                 view promptsview = inflater.inflate(r.layout.serie_add, null);                   intent intent = new intent();                 intent.setclass(main_list.this, add_series.class);                 intent.putextra("name", userinput.gettext().tostring());                 startactivity(intent);             }         })         .setnegativebutton(r.string.cancel, new dialoginterface.onclicklistener() {             public void onclick(dialoginterface dialog, int id) {              }         }); return builder.create(); }

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