You can use the [CoordinatorLayout.Behavior](<https://developer.android.com/reference/android/support/design/widget/CoordinatorLayout.Behavior.html>) to create dependencies between views. You can anchor a View to another View by:

• using the [layout_anchor](<https://developer.android.com/reference/android/support/design/widget/CoordinatorLayout.LayoutParams.html#getAnchorId()>) attribute.
• creating a custom Behavior and implementing the [layoutDependsOn](<https://developer.android.com/reference/android/support/design/widget/CoordinatorLayout.Behavior.html#layoutDependsOn(android.support.design.widget.CoordinatorLayout,%20V,%20android.view.View)>) method returning true.

For example, in order to create a Behavior for moving an ImageView when another one is moved (example Toolbar), perform the following steps:

• Create the custom Behavior:

public class MyBehavior extends CoordinatorLayout.Behavior<ImageView> {...}

• Override the [layoutDependsOn](<https://developer.android.com/reference/android/support/design/widget/CoordinatorLayout.Behavior.html#layoutDependsOn(android.support.design.widget.CoordinatorLayout,%20V,%20android.view.View)>) method returning true. This method is called every time a change occurs to the layout:

@Override
public boolean layoutDependsOn(CoordinatorLayout parent, 
        ImageView child, View dependency) {
    // Returns true to add a dependency.
    return dependency instanceof Toolbar;
}

• Whenever the method [layoutDependsOn](<https://developer.android.com/reference/android/support/design/widget/CoordinatorLayout.Behavior.html#layoutDependsOn(android.support.design.widget.CoordinatorLayout,%20V,%20android.view.View)>) returns true the method [onDependentViewChanged](<https://developer.android.com/reference/android/support/design/widget/CoordinatorLayout.Behavior.html#onDependentViewChanged(android.support.design.widget.CoordinatorLayout,%20V,%20android.view.View)>) is called:

@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, ImageView child, View dependency) {
    // Implement here animations, translations, or movements; always related to the provided dependency.
    float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight()); 
    child.setTranslationY(translationY);
}