如何将textView放在回收器视图的顶部？

Question

I have a recyclerView (Shimmer RecyclerView) and a fab. I need to display a description for my fab but when I place a textView in the xml file, the textView is displayed behind the recyclerView while I need it on top of the recyclerView. Any idea how to achieve the disired result?

My code:

<android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.design.widget.FloatingActionButton
            android:layout_width="60dp"
            android:layout_height="60dp"
            android:layout_gravity="bottom|left"
            android:layout_marginLeft="10dp"
            android:layout_marginBottom="10dp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom|left"
            android:layout_marginLeft="80dp"
            android:layout_marginBottom="21dp"
            android:background="@drawable/dark_gray_rounded"
            android:gravity="center"
            android:padding="10dp"
            android:text="someText"
            android:textColor="@color/white" />

        <com.cooltechworks.views.shimmer.ShimmerRecyclerView xmlns:app="http://schemas.android.com/apk/res-auto"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:clipToPadding="false"
            android:paddingTop="15dp"
            app:shimmer_demo_angle="35"
            app:shimmer_demo_child_count="10"
            app:shimmer_demo_layout_manager_type="linear_vertical"
            app:shimmer_demo_reverse_animation="true" />
    </android.support.design.widget.CoordinatorLayout>

Answer 1

Try this:

<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.design.widget.FloatingActionButton
    android:layout_width="60dp"
    android:layout_height="60dp"
    android:layout_gravity="bottom|left"
    android:layout_marginLeft="10dp"
    android:layout_marginBottom="10dp" />

<com.cooltechworks.views.shimmer.ShimmerRecyclerView xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:clipToPadding="false"
    android:paddingTop="15dp"
    app:shimmer_demo_angle="35"
    app:shimmer_demo_child_count="10"
    app:shimmer_demo_layout_manager_type="linear_vertical"
    app:shimmer_demo_reverse_animation="true"/>

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|left"
    android:layout_marginLeft="80dp"
    android:layout_marginBottom="21dp"
    android:background="@drawable/dark_gray_rounded"
    android:gravity="center"
    android:padding="10dp"
    android:text="someText"
    android:textColor="@color/white" />

I have tried this. It works same as you wish in question. I Hope this work for you.

Answer 2

CoordinatorLayout extends from FrameLayout , so the child View s are stacked each on top of the previous one (with the FloatingActionButton as an exception because this View specifically is managed by the CoordinatorLayout ).

So you need to swap the TextView and the RecyclerView to achieve the desired effect (at least it works with a "normal" RecyclerView )

<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.FloatingActionButton
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_gravity="bottom|left"
        android:layout_marginLeft="10dp"
        android:layout_marginBottom="10dp" />

    <com.cooltechworks.views.shimmer.ShimmerRecyclerView xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clipToPadding="false"
        android:paddingTop="15dp"
        app:shimmer_demo_angle="35"
        app:shimmer_demo_child_count="10"
        app:shimmer_demo_layout_manager_type="linear_vertical"
        app:shimmer_demo_reverse_animation="true" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|left"
        android:layout_marginLeft="80dp"
        android:layout_marginBottom="21dp"
        android:background="@drawable/dark_gray_rounded"
        android:gravity="center"
        android:padding="10dp"
        android:text="someText"
        android:textColor="@color/white" />
</android.support.design.widget.CoordinatorLayout>

Answer 3

将fab和textView组织在一个单独的布局中，并将其包括在您的coordinatorLayout中