RamiJ3mli

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/button1_txt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:elevation="8dp"

RamiJ3mli

    @BindView(R.id.constraint_layout)
    ConstraintLayout mConstraintLayout;

    ConstraintSet constraintSet;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);
        ButterKnife.bind(this);

RamiJ3mli

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/constraint_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#263238">

    <View
        android:id="@+id/space_background"
        android:layout_width="140dp"

RamiJ3mli

    @BindView(R.id.constraint_layout)
    ConstraintLayout mConstraintLayout;
    
    ConstraintSet csMovieDetails, csMovieDetailsExpanded;
    boolean isExpanded;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_full);

RamiJ3mli

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/constraint_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.constraint.Guideline
        android:id="@+id/left_margin"
        android:layout_width="wrap_content"

RamiJ3mli

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/constraint_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.constraint.Guideline
        android:id="@+id/left_margin"
        android:layout_width="wrap_content"

RamiJ3mli

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <View
        android:id="@+id/widget"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"

RamiJ3mli

ConstraintSet c = new ConstraintSet();
c.clone(constraintLayout);

c.constrainHeight(R.id.image, ConstraintSet.MATCH_CONSTRAINT);
c.constrainWidth(R.id.image, ConstraintSet.MATCH_CONSTRAINT);
c.setDimensionRatio(R.id.image, "16:9");
c.connect(R.id.image, ConstraintSet.LEFT, R.id.left_ruler, ConstraintSet.LEFT);
c.connect(R.id.image, ConstraintSet.RIGHT, R.id.right_ruler, ConstraintSet.RIGHT);

c.applyTo(mConstraintLayout);

RamiJ3mli

ConstraintSet c = new ConstraintSet();
c.clone(constraintLayout);
//c.create( R.id.keyline, ConstraintSet.VERTICAL_GUIDELINE);
c.setGuidelineBegin(R.id.keyline, ScreenUtil.convertDptoPx(16));
c.connect(R.id.button, ConstraintSet.START, R.id.keyline, ConstraintSet.END);
c.applyTo(constraintLayout);

RamiJ3mli