程序包 ohos.agp.components.listcomponent

类 ListComponentPool

java.lang.Object

ohos.agp.components.listcomponent.ListComponentPool

public class ListComponentPool
extends Object

Implements the caching of components to improve the sliding performance of the ListComponent. A ListComponentPool can be used by one or more ListComponent objects.

You can create a ListComponentPool object and use {@link ohos.agp.components. ListComponent#setListCachedPool(ListComponentPool)} to bind it to a ListComponent.

从以下版本开始:

7

嵌套类概要

嵌套类

限定符和类型	类	说明
protected static class	ListComponentPool.ListComponentPoolCleaner	Implements the release of the ListComponentPool object.

构造器概要

构造器

构造器	说明
ListComponentPool()	A constructor used to create a ListComponentPool instance.

方法概要

限定符和类型	方法	说明
void	clear()	Removes all components in this ListComponentPool.
ComponentOwner	getCachedComponent(int componentType)	Obtains components of a given type in this ListComponentPool.
int	getCachedComponentCount(int componentType)	Obtains the number of components of a given type in this ListComponentPool.
long	getNativePtr()	Obtains the native object.
void	putCachedComponent(ComponentOwner componentOwner)	Adds a component to be cached to this ListComponentPool.
void	setMaxCachedSize(int componentType, int max)	Sets the maximum number of components of a given type that can be added to this ListComponentPool.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

ListComponentPool

public ListComponentPool()

A constructor used to create a ListComponentPool instance.

从以下版本开始:

7

方法详细资料

getNativePtr

public long getNativePtr()

Obtains the native object.

返回:

Returns the native object.

setMaxCachedSize

public void setMaxCachedSize(int componentType,
                             int max)

Sets the maximum number of components of a given type that can be added to this ListComponentPool.

参数:

componentType - Indicates the component type.

max - Indicates the maximum number to set.

从以下版本开始:

7

clear

public void clear()

Removes all components in this ListComponentPool.

从以下版本开始:

7

getCachedComponentCount

public int getCachedComponentCount(int componentType)

Obtains the number of components of a given type in this ListComponentPool.

参数:

componentType - Indicates the component type.

返回:

Returns the number of components if obtained; returns 0 if an exception occurs.

从以下版本开始:

7

getCachedComponent

public ComponentOwner getCachedComponent(int componentType)

Obtains components of a given type in this ListComponentPool.

参数:

componentType - Indicates the component type.

返回:

Returns the components if obtained; returns null if such components do not exist.

从以下版本开始:

7

putCachedComponent

public void putCachedComponent(ComponentOwner componentOwner)

Adds a component to be cached to this ListComponentPool.

参数:

componentOwner - Indicates the ComponentOwner of the component to cache.

从以下版本开始:

7