开源库 FloatingActionButton

<com.github.clans.fab.FloatingActionMenu android:id="@+id/menu" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:layout_marginRight="10dp" android:layout_marginBottom="10dp" android:layout_marginLeft="10dp" fab:menu_fab_size="normal" fab:menu_showShadow="true" fab:menu_shadowColor="#66000000" fab:menu_shadowRadius="4dp" fab:menu_shadowXOffset="1dp" fab:menu_shadowYOffset="3dp" fab:menu_colorNormal="#DA4336" fab:menu_colorPressed="#E75043" fab:menu_colorRipple="#99FFFFFF" fab:menu_animationDelayPerItem="50" fab:menu_icon="@drawable/fab_add" fab:menu_buttonSpacing="0dp" fab:menu_labels_margin="0dp" fab:menu_labels_showAnimation="@anim/fab_slide_in_from_right" fab:menu_labels_hideAnimation="@anim/fab_slide_out_to_right" fab:menu_labels_paddingTop="4dp" fab:menu_labels_paddingRight="8dp" fab:menu_labels_paddingBottom="4dp" fab:menu_labels_paddingLeft="8dp" fab:menu_labels_padding="8dp" fab:menu_labels_textColor="#FFFFFF" fab:menu_labels_textSize="14sp" fab:menu_labels_cornerRadius="3dp" fab:menu_labels_colorNormal="#333333" fab:menu_labels_colorPressed="#444444" fab:menu_labels_colorRipple="#66FFFFFF" fab:menu_labels_showShadow="true" fab:menu_labels_singleLine="false" fab:menu_labels_ellipsize="none" fab:menu_labels_maxLines="-1" fab:menu_labels_style="@style/YourCustomLabelsStyle" fab:menu_labels_position="left" fab:menu_openDirection="up" fab:menu_backgroundColor="@android:color/transparent" fab:menu_fab_label="your_label_here" fab:menu_fab_show_animation="@anim/my_show_animation" fab:menu_fab_hide_animation="@anim/my_hide_animation">