mva2.adapter

Class ItemBinder<M,VH extends ItemViewHolder<M>>

java.lang.Object

mva2.adapter.ItemBinder<M,VH>

Type Parameters:

M - Model which is binded by this class

VH - ViewHolder for this ItemBinder class

public abstract class ItemBinder<M,VH extends ItemViewHolder<M>>
extends java.lang.Object

Each item displayed in recylerview needs to be backed by a viewholder. ViewHolders will be created and binded by the ItemBinders.

Constructor Summary

Constructors

Constructor and Description
ItemBinder() No-arg constructor for ItemBinder.
ItemBinder(Decorator decorator) Initializes the ItemBinder class and adds the decorator to this ItemBinder.

Method Summary

Modifier and Type	Method and Description
void	addDecorator(Decorator decorator) Used to add Decorator for the item binder.
void	addDecorator(Decorator decorator, int priority) Used to add Decorator for the item binder with priority.
abstract void	bindViewHolder(VH holder, M item)
void	bindViewHolder(VH holder, M item, java.util.List payloads)
abstract boolean	canBindData(java.lang.Object item)
abstract VH	createViewHolder(android.view.ViewGroup parent)
int	getSpanSize(int maxSpanCount) Used to determine the span size for the ItemBinder.
android.view.View	inflate(android.view.ViewGroup parent, int layoutResId) Utility method to inflate the View
void	initViewHolder(VH holder) This method is called immediately after createViewHolder(android.view.ViewGroup) method is called.
void	removeAllDecorators() Removes all decorators added to this ItemBinder
boolean	removeDecorator(Decorator decorator) Removes the first occurrence of the specified decorator from this ItemBinder.
void	removeDecorator(int index) Removes the decorator at the specified position from this ItemBinder.

Methods inherited from class java.lang.Object

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

Constructor Detail

ItemBinder

public ItemBinder()

No-arg constructor for ItemBinder.

ItemBinder

public ItemBinder(Decorator decorator)

Initializes the ItemBinder class and adds the decorator to this ItemBinder.

Parameters:

decorator - Decorator to be used for this ItemBinder

Method Detail

addDecorator

public void addDecorator(Decorator decorator)

Used to add Decorator for the item binder. If null value is set the method exits silently.

Parameters:

decorator - Decorator that needs to be added

addDecorator

public void addDecorator(Decorator decorator,
                         int priority)

Used to add Decorator for the item binder with priority. If null value is set the method exits * silently.

Parameters:

decorator - Decorator to be added

priority - Position in the decoration chain to insert this decoration at. If this value is negative the decoration will be added at the end.

bindViewHolder

public void bindViewHolder(VH holder,
                           M item,
                           java.util.List payloads)

Parameters:

holder - holder The ItemViewHolder which should be updated to represent the contents of the item at the given position in the data set.

item - The object which holds the data

payloads - A non-null list of merged payloads. Can be empty list if requires full update.

See Also:

bindViewHolder(ItemViewHolder, Object)

getSpanSize

public int getSpanSize(int maxSpanCount)

Used to determine the span size for the ItemBinder.

By default the ItemBinder has the span size as 1. It can be overridden by the child ItemBinder to provide the custom span size.

Parameters:

maxSpanCount - The maximum span count of the GridLayoutManager used inside the RecyclerView

Returns:

Returns the span size

inflate

public android.view.View inflate(android.view.ViewGroup parent,
                                 int layoutResId)

Utility method to inflate the View

Parameters:

parent - The ViewGroup into which the new View will be added after it is bound to an adapter position.

layoutResId - Layout to be inflated

Returns:

View that was inflated

initViewHolder

public void initViewHolder(VH holder)

This method is called immediately after createViewHolder(android.view.ViewGroup) method is called. Use this method for setting click listeners and others similar stuff. For example, all the initialization code inside the ItemViewHolder.ItemViewHolder(View) is qualified to be here.

Parameters:

holder - The ItemViewHolder which should be updated to represent the contents of the item at the given position in the data set.

removeAllDecorators

public void removeAllDecorators()

Removes all decorators added to this ItemBinder

removeDecorator

public boolean removeDecorator(Decorator decorator)

Removes the first occurrence of the specified decorator from this ItemBinder.

Parameters:

decorator - Decorator to be removed from this ItemBinder, if present

Returns:

true if this list contained the specified element

removeDecorator

public void removeDecorator(int index)

Removes the decorator at the specified position from this ItemBinder.

Parameters:

index - the index of the Decorator to be removed

createViewHolder

public abstract VH createViewHolder(android.view.ViewGroup parent)

Parameters:

parent - The ViewGroup into which the new View will be added after it is bound to an adapter position.

Returns:

A new ItemViewHolder that holds a View for the given ItemBinder.

bindViewHolder

public abstract void bindViewHolder(VH holder,
                                    M item)

Parameters:

holder - holder The ItemViewHolder which should be updated to represent the contents of the item at the given position in the data set.

item - The object which holds the data

See Also:

bindViewHolder(ItemViewHolder, Object, List)

canBindData

public abstract boolean canBindData(java.lang.Object item)

Parameters:

item - The object from the data set

Returns:

boolean value which determines whether the ItemBinder can bindViewHolder the item to the ItemViewHolder