Android DataBinding - Callback Listener

ChangedCallback Listener

• ObservableField

    observableField.addOnPropertyChangedCallback(object : Observable.OnPropertyChangedCallback() {
        override fun onPropertyChanged(sender: Observable?, propertyId: Int) {
                ...
        }
    })
  

• ObservableArrayList

    observableArrayList.addOnListChangedCallback(object :
        ObservableList.OnListChangedCallback<ObservableList<String>>() {
        override fun onChanged(sender: ObservableList<String>?) {
            ...
        }
  
        override fun onItemRangeRemoved(sender: ObservableList<String>?, positionStart: Int, itemCount: Int) {
            ...
        }
  
        override fun onItemRangeMoved(
                sender: ObservableList<String>?,
                fromPosition: Int,
                toPosition: Int,
                itemCount: Int
        ) {
            ...
        }
  
        override fun onItemRangeInserted(sender: ObservableList<String>?, positionStart: Int, itemCount: Int) {
            ...
        }
  
        override fun onItemRangeChanged(sender: ObservableList<String>?, positionStart: Int, itemCount: Int) {
            ...
        }
    })
  

• ObservableArrayMap

    observableArrayMap.addOnMapChangedCallback(object :
            ObservableMap.OnMapChangedCallback<ObservableMap<String, Boolean>, String, Boolean>() {
            override fun onMapChanged(sender: ObservableMap<String, Boolean>?, key: String?) {
                ...
            }
        })
    }
  

• Callback Listener Github Example