程序包 ohos.agp.components

接口 Picker.ScrolledListener

封闭类:

Picker

public static interface Picker.ScrolledListener

Processes scroll events of a Picker instance.

This class listens for the scroll state of a number picker.

字段概要

字段

限定符和类型	字段	说明
static int	STATE_DRAGGING	Indicates the touch scroll state.
static int	STATE_FLING	Indicates the fling scroll state.
static int	STATE_HALT	Indicates the idle state.

方法概要

限定符和类型	方法	说明
void	onScrollStateUpdated(Picker picker, int scrollState)	Callback to process scroll state change events of a Picker instance.

字段详细资料

STATE_DRAGGING

static final int STATE_DRAGGING

Indicates the touch scroll state.

The Picker instance is scrolled on a touchscreen.

另请参阅:

常量字段值

STATE_FLING

static final int STATE_FLING

Indicates the fling scroll state.

The scrolling has stopped while the number picker continues to fling.

另请参阅:

常量字段值

STATE_HALT

static final int STATE_HALT

Indicates the idle state.

The Picker instance is not scrolled.

另请参阅:

常量字段值

方法详细资料

onScrollStateUpdated

void onScrollStateUpdated(Picker picker,
                          int scrollState)

Callback to process scroll state change events of a Picker instance.

参数:

picker - Indicates the Picker instance with a changed scroll state.

scrollState - Indicates the scroll state of the number picker, including: STATE_HALT, STATE_DRAGGING, and STATE_FLING.

从以下版本开始:

4