@ -15,67 +15,67 @@ import java.util.*
* *
* 通用的adapter 可添加header ， footer ， 以及不同类型item * 通用的adapter 可添加header ， footer ， 以及不同类型item
* / * /
abstract class CommonRecyclerAdapter < ITEM > ( protected val context : Context ) : abstract class CommonRecyclerAdapter < ITEM > ( protected val context : Context ) :
RecyclerView . Adapter < ItemViewHolder > ( ) { RecyclerView . Adapter < ItemViewHolder > ( ) {
constructor ( context : Context , vararg delegates : ItemViewDelegate < ITEM > ) : this ( context ) { constructor ( context : Context , vararg delegates : ItemViewDelegate < ITEM > ) : this ( context ) {
addItemViewDelegates ( * delegates ) addItemViewDelegates ( * delegates )
} }
constructor ( constructor (
context : Context , context : Context ,
vararg delegates : Pair < Int , ItemViewDelegate < ITEM > > vararg delegates : Pair < Int , ItemViewDelegate < ITEM > >
) : this ( context ) { ) : this ( context ) {
addItemViewDelegates ( * delegates ) addItemViewDelegates ( * delegates )
} }
private val inflater : LayoutInflater = LayoutInflater . from ( context ) private val inflater : LayoutInflater = LayoutInflater . from ( context )
private var headerItems : SparseArray < View > ? = null private var headerItems : SparseArray < View > ? = null
private var footerItems : SparseArray < View > ? = null private var footerItems : SparseArray < View > ? = null
private val itemDelegates : HashMap < Int , ItemViewDelegate < ITEM > > = hashMapOf ( ) private val itemDelegates : HashMap < Int , ItemViewDelegate < ITEM > > = hashMapOf ( )
private val items : MutableList < ITEM > = mutableListOf ( ) private val items : MutableList < ITEM > = mutableListOf ( )
private val lock = Object ( ) private val lock = Object ( )
private var itemClickListener : ( ( holder : ItemViewHolder , item : ITEM ) -> Unit ) ? = null private var itemClickListener : ( ( holder : ItemViewHolder , item : ITEM ) -> Unit ) ? = null
private var itemLongClickListener : ( ( holder : ItemViewHolder , item : ITEM ) -> Boolean ) ? = null private var itemLongClickListener : ( ( holder : ItemViewHolder , item : ITEM ) -> Boolean ) ? = null
// 这个用Kotlin的setter就行了, 不需要手动开一个函数进行设置 // 这个用Kotlin的setter就行了, 不需要手动开一个函数进行设置
var itemAnimation : ItemAnimation ? = null var itemAnimation : ItemAnimation ? = null
fun setOnItemClickListener ( listener : ( holder : ItemViewHolder , item : ITEM ) -> Unit ) { fun setOnItemClickListener ( listener : ( holder : ItemViewHolder , item : ITEM ) -> Unit ) {
itemClickListener = listener itemClickListener = listener
} }
fun setOnItemLongClickListener ( listener : ( holder : ItemViewHolder , item : ITEM ) -> Boolean ) { fun setOnItemLongClickListener ( listener : ( holder : ItemViewHolder , item : ITEM ) -> Boolean ) {
itemLongClickListener = listener itemLongClickListener = listener
} }
fun bindToRecyclerView ( recyclerView : RecyclerView ) { fun bindToRecyclerView ( recyclerView : RecyclerView ) {
recyclerView . adapter = this recyclerView . adapter = this
} }
fun < DELEGATE : ItemViewDelegate < ITEM > > addItemViewDelegate ( viewType : Int , delegate : DELEGATE ) { fun < DELEGATE : ItemViewDelegate < ITEM > > addItemViewDelegate ( viewType : Int , delegate : DELEGATE ) {
itemDelegates [ viewType ] = delegate itemDelegates [ viewType ] = delegate
} }
fun < DELEGATE : ItemViewDelegate < ITEM > > addItemViewDelegate ( delegate : DELEGATE ) { fun < DELEGATE : ItemViewDelegate < ITEM > > addItemViewDelegate ( delegate : DELEGATE ) {
itemDelegates [ itemDelegates . size ] = delegate itemDelegates [ itemDelegates . size ] = delegate
} }
fun < DELEGATE : ItemViewDelegate < ITEM > > addItemViewDelegates ( vararg delegates : DELEGATE ) { fun < DELEGATE : ItemViewDelegate < ITEM > > addItemViewDelegates ( vararg delegates : DELEGATE ) {
delegates . forEach { delegates . forEach {
addItemViewDelegate ( it ) addItemViewDelegate ( it )
} }
} }
fun addItemViewDelegates ( vararg delegates : Pair < Int , ItemViewDelegate < ITEM > > ) = fun addItemViewDelegates ( vararg delegates : Pair < Int , ItemViewDelegate < ITEM > > ) =
delegates . forEach { delegates . forEach {
addItemViewDelegate ( it . first , it . second ) addItemViewDelegate ( it . first , it . second )
} }
fun addHeaderView ( header : View ) { fun addHeaderView ( header : View ) {
synchronized ( lock ) { synchronized ( lock ) {
if ( headerItems == null ) { if ( headerItems == null ) {
@ -88,7 +88,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun addFooterView ( footer : View ) = fun addFooterView ( footer : View ) =
synchronized ( lock ) { synchronized ( lock ) {
if ( footerItems == null ) { if ( footerItems == null ) {
@ -100,8 +100,8 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
notifyItemInserted ( index ) notifyItemInserted ( index )
} }
} }
fun removeHeaderView ( header : View ) = fun removeHeaderView ( header : View ) =
synchronized ( lock ) { synchronized ( lock ) {
headerItems ?. let { headerItems ?. let {
@ -112,7 +112,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun removeFooterView ( footer : View ) = fun removeFooterView ( footer : View ) =
synchronized ( lock ) { synchronized ( lock ) {
footerItems ?. let { footerItems ?. let {
@ -123,7 +123,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun setItems ( items : List < ITEM > ? ) { fun setItems ( items : List < ITEM > ? ) {
synchronized ( lock ) { synchronized ( lock ) {
if ( this . items . isNotEmpty ( ) ) { if ( this . items . isNotEmpty ( ) ) {
@ -135,7 +135,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
notifyDataSetChanged ( ) notifyDataSetChanged ( )
} }
} }
fun setItems ( items : List < ITEM > ? , diffResult : DiffUtil . DiffResult ) { fun setItems ( items : List < ITEM > ? , diffResult : DiffUtil . DiffResult ) {
synchronized ( lock ) { synchronized ( lock ) {
if ( this . items . isNotEmpty ( ) ) { if ( this . items . isNotEmpty ( ) ) {
@ -147,7 +147,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
diffResult . dispatchUpdatesTo ( this ) diffResult . dispatchUpdatesTo ( this )
} }
} }
fun setItem ( position : Int , item : ITEM ) { fun setItem ( position : Int , item : ITEM ) {
synchronized ( lock ) { synchronized ( lock ) {
val oldSize = getActualItemCount ( ) val oldSize = getActualItemCount ( )
@ -157,7 +157,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun addItem ( item : ITEM ) { fun addItem ( item : ITEM ) {
synchronized ( lock ) { synchronized ( lock ) {
val oldSize = getActualItemCount ( ) val oldSize = getActualItemCount ( )
@ -166,7 +166,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun addItems ( position : Int , newItems : List < ITEM > ) { fun addItems ( position : Int , newItems : List < ITEM > ) {
synchronized ( lock ) { synchronized ( lock ) {
if ( this . items . addAll ( position , newItems ) ) { if ( this . items . addAll ( position , newItems ) ) {
@ -174,7 +174,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun addItems ( newItems : List < ITEM > ) { fun addItems ( newItems : List < ITEM > ) {
synchronized ( lock ) { synchronized ( lock ) {
val oldSize = getActualItemCount ( ) val oldSize = getActualItemCount ( )
@ -187,7 +187,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun removeItem ( position : Int ) { fun removeItem ( position : Int ) {
synchronized ( lock ) { synchronized ( lock ) {
if ( this . items . removeAt ( position ) != null ) { if ( this . items . removeAt ( position ) != null ) {
@ -195,7 +195,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun removeItem ( item : ITEM ) { fun removeItem ( item : ITEM ) {
synchronized ( lock ) { synchronized ( lock ) {
if ( this . items . remove ( item ) ) { if ( this . items . remove ( item ) ) {
@ -203,7 +203,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun removeItems ( items : List < ITEM > ) { fun removeItems ( items : List < ITEM > ) {
synchronized ( lock ) { synchronized ( lock ) {
if ( this . items . removeAll ( items ) ) { if ( this . items . removeAll ( items ) ) {
@ -211,7 +211,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun swapItem ( oldPosition : Int , newPosition : Int ) { fun swapItem ( oldPosition : Int , newPosition : Int ) {
synchronized ( lock ) { synchronized ( lock ) {
val size = getActualItemCount ( ) val size = getActualItemCount ( )
@ -224,7 +224,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
fun updateItem ( item : ITEM ) = fun updateItem ( item : ITEM ) =
synchronized ( lock ) { synchronized ( lock ) {
val index = this . items . indexOf ( item ) val index = this . items . indexOf ( item )
@ -233,7 +233,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
notifyItemChanged ( index ) notifyItemChanged ( index )
} }
} }
fun updateItem ( position : Int , payload : Any ) = fun updateItem ( position : Int , payload : Any ) =
synchronized ( lock ) { synchronized ( lock ) {
val size = getActualItemCount ( ) val size = getActualItemCount ( )
@ -241,7 +241,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
notifyItemChanged ( position + getHeaderCount ( ) , payload ) notifyItemChanged ( position + getHeaderCount ( ) , payload )
} }
} }
fun updateItems ( fromPosition : Int , toPosition : Int , payloads : Any ) = fun updateItems ( fromPosition : Int , toPosition : Int , payloads : Any ) =
synchronized ( lock ) { synchronized ( lock ) {
val size = getActualItemCount ( ) val size = getActualItemCount ( )
@ -253,43 +253,43 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
) )
} }
} }
fun clearItems ( ) = fun clearItems ( ) =
synchronized ( lock ) { synchronized ( lock ) {
this . items . clear ( ) this . items . clear ( )
notifyDataSetChanged ( ) notifyDataSetChanged ( )
} }
fun isEmpty ( ) = items . isEmpty ( ) fun isEmpty ( ) = items . isEmpty ( )
fun isNotEmpty ( ) = items . isNotEmpty ( ) fun isNotEmpty ( ) = items . isNotEmpty ( )
/ * * / * *
* 除去header和footer * 除去header和footer
* / * /
fun getActualItemCount ( ) = items . size fun getActualItemCount ( ) = items . size
fun getHeaderCount ( ) = headerItems ?. size ( ) ?: 0 fun getHeaderCount ( ) = headerItems ?. size ( ) ?: 0
fun getFooterCount ( ) = footerItems ?. size ( ) ?: 0 fun getFooterCount ( ) = footerItems ?. size ( ) ?: 0
fun getItem ( position : Int ) : ITEM ? = items . getOrNull ( position ) fun getItem ( position : Int ) : ITEM ? = items . getOrNull ( position )
fun getItemByLayoutPosition ( position : Int ) = items . getOrNull ( position - getHeaderCount ( ) ) fun getItemByLayoutPosition ( position : Int ) = items . getOrNull ( position - getHeaderCount ( ) )
fun getItems ( ) : List < ITEM > = items fun getItems ( ) : List < ITEM > = items
protected open fun getItemViewType ( item : ITEM , position : Int ) = 0 protected open fun getItemViewType ( item : ITEM , position : Int ) = 0
/ * * / * *
* grid 模式下使用 * grid 模式下使用
* / * /
protected open fun getSpanSize ( item : ITEM , viewType : Int , position : Int ) = 1 protected open fun getSpanSize ( item : ITEM , viewType : Int , position : Int ) = 1
final override fun getItemCount ( ) = getActualItemCount ( ) + getHeaderCount ( ) + getFooterCount ( ) final override fun getItemCount ( ) = getActualItemCount ( ) + getHeaderCount ( ) + getFooterCount ( )
final override fun getItemViewType ( position : Int ) = when { final override fun getItemViewType ( position : Int ) = when {
isHeader ( position ) -> TYPE _HEADER _VIEW + position isHeader ( position ) -> TYPE _HEADER _VIEW + position
isFooter ( position ) -> TYPE _FOOTER _VIEW + position - getActualItemCount ( ) - getHeaderCount ( ) isFooter ( position ) -> TYPE _FOOTER _VIEW + position - getActualItemCount ( ) - getHeaderCount ( )
@ -297,16 +297,16 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
getItemViewType ( it , getActualPosition ( position ) ) getItemViewType ( it , getActualPosition ( position ) )
} ?: 0 } ?: 0
} }
override fun onCreateViewHolder ( parent : ViewGroup , viewType : Int ) = when { override fun onCreateViewHolder ( parent : ViewGroup , viewType : Int ) = when {
viewType < TYPE _HEADER _VIEW + getHeaderCount ( ) -> { viewType < TYPE _HEADER _VIEW + getHeaderCount ( ) -> {
ItemViewHolder ( headerItems !! . get ( viewType ) ) ItemViewHolder ( headerItems !! . get ( viewType ) )
} }
viewType >= TYPE _FOOTER _VIEW -> { viewType >= TYPE _FOOTER _VIEW -> {
ItemViewHolder ( footerItems !! . get ( viewType ) ) ItemViewHolder ( footerItems !! . get ( viewType ) )
} }
else -> { else -> {
val holder = ItemViewHolder ( val holder = ItemViewHolder (
inflater . inflate ( inflater . inflate (
@ -315,10 +315,10 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
false false
) )
) )
itemDelegates . getValue ( viewType ) itemDelegates . getValue ( viewType )
. registerListener ( holder ) . registerListener ( holder )
if ( itemClickListener != null ) { if ( itemClickListener != null ) {
holder . itemView . setOnClickListener { holder . itemView . setOnClickListener {
getItem ( holder . layoutPosition ) ?. let { getItem ( holder . layoutPosition ) ?. let {
@ -326,7 +326,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
if ( itemLongClickListener != null ) { if ( itemLongClickListener != null ) {
holder . itemView . setOnLongClickListener { holder . itemView . setOnLongClickListener {
getItem ( holder . layoutPosition ) ?. let { getItem ( holder . layoutPosition ) ?. let {
@ -334,13 +334,13 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} ?: true } ?: true
} }
} }
holder holder
} }
} }
final override fun onBindViewHolder ( holder : ItemViewHolder , position : Int ) { } final override fun onBindViewHolder ( holder : ItemViewHolder , position : Int ) { }
final override fun onBindViewHolder ( final override fun onBindViewHolder (
holder : ItemViewHolder , holder : ItemViewHolder ,
position : Int , position : Int ,
@ -353,19 +353,19 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
override fun onViewAttachedToWindow ( holder : ItemViewHolder ) { override fun onViewAttachedToWindow ( holder : ItemViewHolder ) {
super . onViewAttachedToWindow ( holder ) super . onViewAttachedToWindow ( holder )
if ( !is Header ( holder . layoutPosition ) && !is Footer ( holder . layoutPosition ) ) { if ( !is Header ( holder . layoutPosition ) && !is Footer ( holder . layoutPosition ) ) {
addAnimation ( holder ) addAnimation ( holder )
} }
} }
override fun onAttachedToRecyclerView ( recyclerView : RecyclerView ) { override fun onAttachedToRecyclerView ( recyclerView : RecyclerView ) {
super . onAttachedToRecyclerView ( recyclerView ) super . onAttachedToRecyclerView ( recyclerView )
val manager = recyclerView . layoutManager val manager = recyclerView . layoutManager
if ( manager is GridLayoutManager ) { if ( manager is GridLayoutManager ) {
manager . spanSizeLookup = object : GridLayoutManager . SpanSizeLookup ( ) { manager . spanSizeLookup = object : GridLayoutManager . SpanSizeLookup ( ) {
override fun getSpanSize ( position : Int ) : Int { override fun getSpanSize ( position : Int ) : Int {
return getItem ( position ) ?. let { return getItem ( position ) ?. let {
if ( isHeader ( position ) || isFooter ( position ) ) manager . spanCount else getSpanSize ( if ( isHeader ( position ) || isFooter ( position ) ) manager . spanCount else getSpanSize (
@ -376,13 +376,13 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
private fun isHeader ( position : Int ) = position < getHeaderCount ( ) private fun isHeader ( position : Int ) = position < getHeaderCount ( )
private fun isFooter ( position : Int ) = position >= getActualItemCount ( ) + getHeaderCount ( ) private fun isFooter ( position : Int ) = position >= getActualItemCount ( ) + getHeaderCount ( )
private fun getActualPosition ( position : Int ) = position - getHeaderCount ( ) private fun getActualPosition ( position : Int ) = position - getHeaderCount ( )
private fun addAnimation ( holder : ItemViewHolder ) { private fun addAnimation ( holder : ItemViewHolder ) {
itemAnimation ?. let { itemAnimation ?. let {
if ( it . itemAnimEnabled ) { if ( it . itemAnimEnabled ) {
@ -393,7 +393,7 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
protected open fun startAnimation ( holder : ItemViewHolder , item : ItemAnimation ) { protected open fun startAnimation ( holder : ItemViewHolder , item : ItemAnimation ) {
item . itemAnimation ?. let { item . itemAnimation ?. let {
for ( anim in it . getAnimators ( holder . itemView ) ) { for ( anim in it . getAnimators ( holder . itemView ) ) {
@ -402,12 +402,12 @@ abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context):
} }
} }
} }
companion object { companion object {
private const val TYPE _HEADER _VIEW = Int . MIN _VALUE private const val TYPE _HEADER _VIEW = Int . MIN _VALUE
private const val TYPE _FOOTER _VIEW = Int . MAX _VALUE - 999 private const val TYPE _FOOTER _VIEW = Int . MAX _VALUE - 999
} }
} }
口口吕
6 years ago