Twidere-App-Android-Twitter-Mastodon/twidere/src/main/res/layout/layout_media_preview.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Twidere - Twitter client for Android
  ~
  ~  Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
  ~
  ~  This program is free software: you can redistribute it and/or modify
  ~  it under the terms of the GNU General Public License as published by
  ~  the Free Software Foundation, either version 3 of the License, or
  ~  (at your option) any later version.
  ~
  ~  This program is distributed in the hope that it will be useful,
  ~  but WITHOUT ANY WARRANTY; without even the implied warranty of
  ~  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  ~  GNU General Public License for more details.
  ~
  ~  You should have received a copy of the GNU General Public License
  ~  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->

<FrameLayout
    android:id="@+id/media_preview"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <LinearLayout
        android:id="@+id/media_preview_grid"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"/>

    <LinearLayout
        android:id="@+id/media_preview_load"
        android:layout_width="match_parent"
        android:layout_height="@dimen/action_button_size"
        android:background="?android:selectableItemBackground"
        android:gravity="center"
        android:orientation="horizontal"
        android:visibility="gone">

        <org.mariotaku.twidere.view.ActionIconThemedTextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center_vertical"
            android:drawableLeft="@drawable/ic_action_gallery"
            android:text="@string/load_media"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textStyle="bold"/>
    </LinearLayout>

</FrameLayout>