java - JavaFX 2 - Tableview Checkbox not showing value -

i managed track whenever click happens on checkbox in gui. won't load correct value of checkbox gui. can see might wrong? :)

roadtraincol.setcellvaluefactory(             new callback<celldatafeatures<spot,boolean>,observablevalue<boolean>>()             {                 public observablevalue<boolean> call(celldatafeatures<spot, boolean> param) {                     return param.getvalue().getroadtrain();                 }                });     roadtraincol.setcellfactory(col -> {         checkboxtablecell<spot, boolean> cell = new checkboxtablecell<>(index -> {             booleanproperty active = new simplebooleanproperty();             active.addlistener((obs, wasactive, isnowactive) -> {                 system.out.println("del");                 rettedespots(tableviewid.getitems().get(index).getid());             });             return active ;         });         return cell ;     }); 

you're creating new booleanpropertys. properties initialized false.

the cellfactory not place add listeners. add listeners items instead.

roadtraincol.setcellvaluefactory(         new callback<celldatafeatures<spot, boolean>, observablevalue<boolean>>() {             public observablevalue<boolean> call(celldatafeatures<spot, boolean> param) {                 return param.getvalue().getroadtrain();             }         });  roadtraincol.setcellfactory(checkboxtablecell.fortablecolumn(roadtraincol));  changelistener<boolean> roadtrainchangelistener = (observable, oldvalue, newvalue) -> {     spot spot = (spot) ((readonlyproperty) observable).getbean();     system.out.println("del");     rettedespots(spot.getid()); };  // add/remove listeners when spots added to/removed list tableviewid.getitems().addlistener((listchangelistener.change<? extends spot> c) -> {     while (c.next()) {         (spot s : c.getremoved()) {             s.getroadtrain().removelistener(roadtrainchangelistener);         }         (spot s : c.getaddedsublist()) {             s.getroadtrain().addlistener(roadtrainchangelistener);         }     } });  // add listeners items in list (spot s : tableviewid.getitems()) {     s.getroadtrain().addlistener(roadtrainchangelistener); } 

note works, if assigned spot instance containing simplebooleanproperty bean, e.g.

spot() {      this.roadtrain = new simplebooleanproperty(this, "roadtrain"); } 

or

spot(boolean roadtrain) {      this.roadtrain = new simplebooleanproperty(this, "roadtrain", roadtrain); } 

i used bean avoid having tho create new listeners every item.

also consider following naming conventions javafx properties:

• property getter named <propertyname>property (not get<capitalfirstletterpropertyname>)
• the getter property's value named get<capitalfirstletterpropertyname>
• the setter property's value named set<capitalfirstletterpropertyname>