Android Data Binding: visibility on include tag

Question

As per http://developer.android.com/tools/data-binding/guide.html#imports, we can have such simple expressions in visibility:

Answer 1

You can find the included layout by its id and hide it using the visibility attribute.

For example in Kotlin,

binding.root.findViewById<CardView>(R.id.layout_inclulded).visibility = View.GONE

where,

root is the default attribute for the root element in the parent layout.

CardView is the root element of the included layout in my case.

R.id.layout_inclulded is the id of the included layout in the parent layout.

Answer 2

Try:

this.imageLayout.getRoot().setVisibility(NotifTypeNotificatio1);

Answer 3

Best Way

1. You can directly pass Integer value of visibility like.
2. You can set default value of visibility also by setting default=gone in binding.

For example this is included_layout.xml

<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data>

        <variable
            name="visibility"
            type="int"/>

    </data>

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="@{visibility, default=gone}"
        />

</layout>

and use like

<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data>

      <import type="android.view.View"/>

    </data>

   <include
     android:id="@+id/included_layout"
     layout="@layout/included_layout"
     app:visibility="@{View.VISIBLE}"/>

</layout>

Answer 4

Thank to everybody, you help me a lot. Your answers were part of my succes on this trouble.

We wanted to set visibility of an image view, that was also target of some animation. The Motion Scene was taking the management of the visibility. Set the motion property app:visibilityMode to "ignore" solve everything.

<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

<ConstraintSet android:id="@+id/expanded">
<!-- ... -->
    <Constraint
        android:id="@+id/myImageViewId"
        app:visibilityMode="ignore"/>
</ConstraintSet>
<!-- ... -->
</MotionScene>

Answer 5

I imagine what you are trying to do would look something like this:

In the layout you are including, specify a boolean variable and bind it to the desired view's visibility

<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data>

        <import type="android.view.View"/>

        <variable
            name="isVisible"
            type="boolean"/>

    </data>

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="@{isVisible ? View.VISIBLE : View.GONE}"/>

</layout>

Then In your calling layout bind your value

<include
    android:id="@+id/image_layout"
    layout="@layout/image_layout"
    bind:isVisible="@{notification.notifType == 0}"/>

Answer 6

You are able to pass all necessary parameters from parent xml into included xml via "http://schemas.android.com/apk/res-auto" namespace.

The syntax is res-auto namespace:variable name

For example

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <include
            layout="@layout/include_user_image"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:isVisible="@{true}" />

    </android.support.design.widget.CoordinatorLayout>
</layout>

include_user_image.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data>

        <import type="android.view.View" />

        <variable
            name="isVisible"
            type="boolean" />

    </data>

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="@{isVisible ? View.VISIBLE : View.GONE}" />
</layout>