滑动输入数字

NumberBox控件

HorzIncrement:划动自动增加输入值的步长

combobox控件

http://docwiki.embarcadero.com/RADStudio/Berlin/en/Using_Pickers_to_Provide_Platform-Specific_Behavior_and_View_of_Selection_Controls

http://docwiki.embarcadero.com/Libraries/Berlin/en/FMX.ListBox.TComboBox_Properties

http://docwiki.embarcadero.com/Libraries/Berlin/en/FMX.ListBox.TCustomComboBox.Placement

DropDownKind属性

Placement：

 

Custom	Defines to use the standard FireMonkey drop-down list controls to select string items from drop-down lists.
Native	Defines to use the picker to provide platform-specific list controls to select string items from drop-down lists.

Native效果

 

Custom效果。