I have added 3 buttons in a ConstraintLayout. I have added a button to disable or enable these buttons.
If I was using normal LinearLayout. I could have put all the buttons in a Linear Layout and enable or disable that particular layout.
But I am using ConstraintLayout. So I need to disable or enable all of these buttons, I believe that there must be a way in ConstraintLayout to group different views.
Kindly guide me how to group views in ConstriantLayout
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button"
android:layout_marginTop="16dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="16dp"
android:layout_marginStart="16dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginLeft="16dp" />
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button2"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="16dp"
android:layout_marginStart="8dp"
app:layout_constraintLeft_toRightOf="@+id/button"
android:layout_marginLeft="8dp"
app:layout_constraintTop_toTopOf="@+id/button" />
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button3"
app:layout_constraintTop_toTopOf="@+id/button2"
android:layout_marginEnd="16dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginRight="16dp"
android:layout_marginStart="8dp"
app:layout_constraintLeft_toRightOf="@+id/button2"
android:layout_marginLeft="8dp" />
Yes, as I know you can handle visibility using linear layout but not Enable/Disable views I think, correct me if I am wrong. So now in ConstraintLayout also we can handle visibility of particular group of views using the Group
<android.support.constraint.Group/>
This is new feature introduced in ConstraintLayout which is currently in Beta version.
How to add beta ConstraintLayout to project follow steps below
add maven support in project gradle file as below
allprojects {
repositories {
maven { url 'https://maven.google.com' }
jcenter()
}
}
then in app gardle dependencies add ConstarintLayout library dependency
compile 'com.android.support.constraint:constraint-layout:1.1.0-beta3'
now you have to add group in your ConstraintLayout as follow
<android.support.constraint.Group
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:constraint_referenced_ids="button7,button3,button2"
android:id="@+id/group" />
where in Group reference id
app:constraint_referenced_ids="button7,button3,button2"
contains the comma separated view id's you want to handle run time, so in activity you just bind Group as below and handle visibility
import android.support.constraint.Group; //import statement in activity
Group group=(Group)findViewById(R.id.group);//bind view from xml
group.setVisibility(View.VISIBLE);//this will visible all views
group.setVisibility(View.GONE);//this will set Gone to all views
group.setVisibility(View.INVISIBLE);//this will set INVISIBLE to all view
EDIT ConrtsaintLayout 1.1.0 stable version released on 12 April 2018 https://androidstudio.googleblog.com/2018/04/constraintlayout-110.html
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
Edit Android X If anyone using android x package you can find package info here
https://developer.android.com/jetpack/androidx/migrate
and use:
<androidx.constraintlayout.widget.Group />