Two-Way databinding in EditText

Question

I have this object

ObservableInt someNumber;

public ObservableInt getSomeNumber()
{
    return someNumber;
}

public void setSomeNumber(ObservableInt numbe         


        

Answer 1

You can do two-way binding on EditText.

Using one-way data binding, you can set a value on an attribute and set a listener that reacts to a change in that attribute

variable is string type

variable is number

`` two back apostrophe do binding automatically

• convert number to string when setting it on EditText
• convert string text to number when setting in Model

Tip

From documentation you can see, two-way binding can be used for many purpose.

1. CheckBox, RadioButton, Switch, ToggleButton

android:checked="@={model.checked}"

2. RadioGroup - android:checkedButton

android:checkedButton="@={model.selectedId}"

3. RatingBar - android:rating

android:rating="@={model.rating}"

etc.