Creating a Layout Using CardView and the Android Action Floating Button

Question

I want to create a layout similar to the following image using the Material CardView and Custom Floating Action Button:

And I was developed before this XML Layout file as follows:

<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:fab="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="wrap_content"> <RelativeLayout android:id="@+id/mainview" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <android.support.v7.widget.CardView android:id="@+id/cv" android:layout_width="match_parent" android:layout_height="wrap_content" app:cardCornerRadius="2dp" app:cardElevation="2dp" android:layout_marginBottom="@dimen/cardMarginVertical" android:layout_marginLeft="@dimen/cardMarginHorizontal" android:layout_marginRight="@dimen/cardMarginHorizontal" android:layout_marginTop="@dimen/cardMarginVertical" app:cardPreventCornerOverlap="false" app:contentPadding="0dp"> <com.github.florent37.materialviewpager.sample.ExpandableTextView android:id="@+id/expandingTextView" android:layout_width="match_parent" android:layout_height="wrap_content" android:textSize="15dp" android:layout_marginLeft="10dp" android:layout_marginTop="10dp" android:layout_marginRight="10dp" android:layout_marginBottom="10dp" android:text="@string/longText" /> <RelativeLayout android:id="@+id/buttonlayout" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/expandingTextView" android:layout_gravity="bottom" android:background="@android:color/transparent"> <com.getbase.floatingactionbutton.FloatingActionButton android:id="@+id/action_c" android:layout_width="wrap_content" android:layout_height="wrap_content" fab:fab_colorNormal="#fff" android:layout_alignParentRight="true" fab:fab_colorPressed="#fff" android:visibility="visible" /> </RelativeLayout> </android.support.v7.widget.CardView> </RelativeLayout> </FrameLayout> 

Answer 1

Some code may help to implement an interface such as your drawing, as shown below.

The layout_anchor and layout_anchorGravity in the FloatingActionButton is the point.

 <?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v4.widget.NestedScrollView android:layout_width="match_parent" android:layout_height="match_parent" app:layout_behavior="@string/appbar_scrolling_view_behavior"> <android.support.v7.widget.CardView android:id="@+id/cv" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="16dp"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="The Android Support Library package is a set of code libraries that provide backward-compatible versions of Android framework APIs as well as features that are only available through the library APIs. Each Support Library is backward-compatible to a specific Android API level. This design means that your applications can use the libraries' features and still be compatible with devices running Android 1.6 (API level 4) and up." /> </android.support.v7.widget.CardView> </android.support.v4.widget.NestedScrollView> <android.support.design.widget.FloatingActionButton android:layout_height="wrap_content" android:layout_width="wrap_content" app:layout_anchor="@id/cv" app:layout_anchorGravity="right|end|bottom" android:layout_margin="16dp" android:clickable="true"/> </android.support.design.widget.CoordinatorLayout> 

Edit:

There was some bug in the early answer in Android 5.0.1 and 5.0.2, FAB will show below CardView.

Add NestedScrollView with layout_behavior outside of CardView to work on Android 5.0.1 and 5.0.2