android -data binding how to use

Question

I want to use data binding in my android studio project if its available in production. I am searching online and find references to a beta copy which I clearly dont want. But i read here that data binding is apart of api 23 and built into android studio ? how do i use it if this is true ? I cant find it on jcenter, is it something thats built into the IDE ?

I created a minimum sdk project of 21 and I'd like to use databinding. This code in xml wont compile:

 <TextView android:text="@{user.name}"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:visibility="@user.isAdmin ? View.VISIBLE : View.GONE}"/>

the exact error is on the visibility line and it says "Missing /"

Does it only work on api 23 ? wouldn't this break on older devices then ?

You can also check this tutorial for your reference.

Chintan Rathod
– Chintan Rathod

2016-04-11 06:39:03 +00:00
Commented Apr 11, 2016 at 6:39 — Chintan Rathod
– Chintan Rathod, Commented Apr 11, 2016 at 6:39

CommonsWare · Accepted Answer · 2016-01-09 23:55:15Z

2

I am searching online and find references to a beta copy which i clearly dont want.

It is in a release candidate state at this time.

But i read here that data binding is apart of api 23 and built into android studio ?

Data binding is supplied by the Android Support libraries and a Gradle plugin. It is not related to API Level 23. Android Studio support exists, to some degree.

This code in xml wont compile:

That is because you are missing the binding expression opening characters. Change that attribute to:

android:visibility="@{@user.isAdmin ? View.VISIBLE : View.GONE}"

Does it only work on api 23 ? wouldn't this break on older devices then ?

Quoting the documentation: "you can use it with all Android platform versions back to Android 2.1 (API level 7+)."

answered Jan 9, 2016 at 23:55

CommonsWare

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2 Comments

IgorGanapolsky Over a year ago

It is still in beta. When are you gonna release samples with android Data Binding?

CommonsWare Over a year ago

@IgorGanapolsky: "It is still in beta" -- technically, I think it has progressed to a release candidate. Leastways, the library portion of data binding shows -rc-flavored versions in the Android Repository. That being said, it still has not been released in a final form. "When are you gonna release samples with android Data Binding?" -- in ~2 weeks, as I'm covering it in my next book update, with the sincere hope that it does eventually ship and without major changes.

A Hashemi · Accepted Answer · 2019-10-12 10:30:34Z

0

The Data Binding Library offers both flexibility and broad compatibility—it's a support library, so you can use it with devices running Android 4.0 (API level 14) or higher.

However data binding is supported on Android Plugin for Gradle version 1.5.0 and higher. I recommend you to use the latest Plugin for Gradle in your projects.

to get started with data binding see https://developer.android.com/topic/libraries/data-binding/start.html

answered Oct 12, 2019 at 10:30

A Hashemi

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