Android Architecture Components meets Data Binding : Lifecycle awareness!
Finally Android Data Binding library got updated to play nice with Android Architecture Components library and became life-cycle aware! This means that any changes to the LiveData objects will be reflected in the layouts... automagically! :)
* Tested on Android Studio 3.1 - canary 6
To make the binding life-cycle aware you need to pass the life-cycle owner to the ViewDataBinding by calling the setLifecycleOwner method.
-We also have an EditText that is two-way bound to the user's name, meaning when text gets entered, the name is updated and vise-versa, when the user LiveDate is updated the EditText is updated.
-And finally a button onClick of which we post a change to our LiveData and all the observers get notified.
* Tested on Android Studio 3.1 - canary 6
Whats new?
To make the binding life-cycle aware you need to pass the life-cycle owner to the ViewDataBinding by calling the setLifecycleOwner method.
The ViewModel:
Our view model consists of the LiveData object that is simply and observable data container, where the observer gets notified of data changes.The model:
Our model has one field that is used to store user's name. A POJO.The layout:
-Out layout consists of a text field that is bound to the user's name. And will be updated when our LiveData container posts a change.-We also have an EditText that is two-way bound to the user's name, meaning when text gets entered, the name is updated and vise-versa, when the user LiveDate is updated the EditText is updated.
-And finally a button onClick of which we post a change to our LiveData and all the observers get notified.
The result:
Resources:
- Full source for the project: here
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