Dialog Circular Reveal/Hide

DialogBuilder.java

	private Dialog dialog;

	private void buildDialog() {
		dialog = new Dialog(activity);
		dialogView = activity.getLayoutInflater().inflate(R.layout.dialog_new_participant, null);
		dialogField = ButterKnife.findById(dialogView, R.id.edittext_new_participant);
		dialogFab = ButterKnife.findById(dialogView, R.id.fab_new_participant_dialog);
		dialog.setContentView(dialogView);
		clearBackgrounds(dialogView);
		setListeners();
	}

	private void clearBackgrounds(View view) {
		while (view != null) {
			final ViewParent parent = view.getParent();
			if (parent instanceof View) {
				view = (View) parent;
				view.setBackgroundResource(android.graphics.Color.TRANSPARENT);
			} else {
				view = null;
			}
		}
	}

DialogLayout.xml

<io.codetail.widget.RevealFrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
                                      xmlns:fab="http://schemas.android.com/apk/res-auto"
                                      android:layout_width="match_parent"
                                      android:layout_height="match_parent"
                                      android:id="@+id/reveal_layout"
                                      android:orientation="vertical"
    					>

    <RelativeLayout
        android:id="@+id/dialog_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/white"
        >

        <TextView
            android:id="@+id/textview_new_participant_dialog_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="14dp"
            android:padding="10dp"
            android:text="Enter new name"
            android:textColor="@android:color/black"
            android:textSize="25sp"
            />

        <com.getbase.floatingactionbutton.AddFloatingActionButton
            android:id="@+id/fab_new_participant_dialog"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="right|bottom"
            android:visibility="invisible"
            fab:fab_colorNormal="@color/material_blue"
            fab:fab_colorPressed="@color/material_blue"
            fab:fab_plusIconColor="@color/material_pink"
            android:layout_below="@+id/textview_new_participant_dialog_title"
            android:layout_alignParentRight="true"
            android:layout_alignParentEnd="true"
            />

        <EditText
            android:id="@+id/edittext_new_participant"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:hint="Name"
            android:inputType="text"
            android:padding="10dp"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_below="@+id/textview_new_participant_dialog_title"
            android:layout_toLeftOf="@+id/fab_new_participant_dialog"
            android:layout_toStartOf="@+id/fab_new_participant_dialog"
            />
    </RelativeLayout>

</io.codetail.widget.RevealFrameLayout>