【Android】通用系列 —— AbsListView适配器

Adapter

通用适配器

privateLouAdaptermLouAdapter;

privatevoidinitView(){

ListViewlvMain=(ListView)findViewById(R.id.lv_main);

lvMain.setAdapter(mLouAdapter=newLouAdapter<String>(mContext,lvMain,android.R.layout.simple_list_item_1){

@Override

protectedvoidassign(LouHolderholder,Strings){

holder.putText(android.R.id.text1,s);

}

});

}

mLouAdapter.addItem("Hello")

mLouAdapter.deleteItem(position)

mLouAdapter.deleteItemWithAnim(position)

mLouAdapter.updateView(position)

importandroid.content.Context;

importandroid.graphics.Bitmap;

importandroid.graphics.drawable.Drawable;

importandroid.util.SparseArray;

importandroid.view.LayoutInflater;

importandroid.view.View;

importandroid.widget.ImageView;

importandroid.widget.TextView;

/**

*CreatedbyLouon2016/3/23.

*/

publicclassLouHolder{

privateSparseArray<View>mViews;

privateViewmConvertView;

protectedMARKmark;

protectedenumMARK{

NORMAL,DELETE

}

privateLouHolder(Contextcontext,intlayoutId){

mViews=newSparseArray<View>();

mConvertView=LayoutInflater.from(context).inflate(layoutId,null);

mConvertView.setTag(this);

}

publicstaticLouHoldergetInstance(Contextcontext,intlayoutId,ViewconvertView){

booleanneedInflate=convertView==null||((LouHolder)convertView.getTag()).mark==MARK.DELETE;

if(needInflate){

returnnewLouHolder(context,layoutId);

}

return(LouHolder)convertView.getTag();

}

publicViewgetConvertView(){

returnmConvertView;

}

public<TextendsView>TgetView(intviewId){

Viewview=mViews.get(viewId);

if(view==null){

view=mConvertView.findViewById(viewId);

mViews.put(viewId,view);

}

return(T)view;

}

publicLouHolderputText(intviewId,Stringtext){

Viewv=getView(viewId);

if(vinstanceofTextView){

((TextView)v).setText(text);

}

returnthis;

}

publicLouHolderputText(intviewId,intresId){

Viewv=getView(viewId);

if(vinstanceofTextView){

((TextView)v).setText(resId);

}

returnthis;

}

publicLouHolderputImg(intviewId,intresId){

Viewv=getView(viewId);

if(vinstanceofImageView){

((ImageView)v).setImageResource(resId);

}

returnthis;

}

publicLouHolderputImg(intviewId,Bitmapbitmap){

Viewv=getView(viewId);

if(vinstanceofImageView){

((ImageView)v).setImageBitmap(bitmap);

}

returnthis;

}

publicLouHolderputImg(intviewId,Drawabledrawable){

Viewv=getView(viewId);

if(vinstanceofImageView){

((ImageView)v).setImageDrawable(drawable);

}

returnthis;

}

}

importandroid.content.Context;

importandroid.view.View;

importandroid.view.ViewGroup;

importandroid.view.animation.Animation;

importandroid.view.animation.Transformation;

importandroid.widget.AbsListView;

importandroid.widget.BaseAdapter;

importjava.util.ArrayList;

importjava.util.List;

/**

*CreatedbyLouon2016/3/23.

*/

publicabstractclassLouAdapter<T>extendsBaseAdapter{

privateArrayList<T>mLists;

privateContextmContext;

privateAbsListViewmListView;

privateintmLayoutId;

publicLouAdapter(Contextcontext,AbsListViewlistView,intlayoutId){

mContext=context;

mListView=listView;

mLayoutId=layoutId;

mLists=newArrayList<T>();

}

@Override

publicintgetCount(){

returnmLists.size();

}

@Override

publicTgetItem(intposition){

returnmLists.get(position);

}

@Override

publiclonggetItemId(intposition){

returnposition;

}

@Override

publicViewgetView(intposition,ViewconvertView,ViewGroupparent){

returnupdateView(position,convertView);

}

publicAbsListViewgetBindListView(){

returnmListView;

}

/**

*contain来表示是否已经包含元素；（可能需要重写，如果允许重复的话，就不必要重写了）；

*

*@paramo

*@return

*/

protectedbooleancontain(To){

if(mLists.contains(o)){

returntrue;

}

returnfalse;

}

/**

*用数据来更新视图；

*

*@paramposition

*@paramconvertView

*@return

*/

privateViewupdateView(intposition,ViewconvertView){

LouHolderholder=LouHolder.getInstance(mContext,mLayoutId,convertView);

assign(holder,getItem(position));

returnholder.getConvertView();

}

/**

*当更改了某一个Item之后，可以通过updateView(position);的方式只更新这一个Item；

*

*@paramposition

*/

publicvoidupdateView(intposition){

ViewconvertView=getIndexView(position);

updateView(position,convertView);

}

/**

*@paramholder

*@paramt

*/

protectedabstractvoidassign(LouHolderholder,Tt);

/**

*获取可见元素的View；

*

*@paramposition

*@return

*/

publicViewgetIndexView(intposition){

intcurrentIndex=position-mListView.getFirstVisiblePosition();

if(currentIndex<0||currentIndex>=mLists.size()){

returnnull;

}

returnmListView.getChildAt(currentIndex);

}

publicvoidaddItem(To,booleanfilter){

if(filter&&contain(o)){

return;

}

mLists.add(o);

updateChange();

}

/**

*默认过滤添加的元素；

*

*@paramo

*/

publicvoidaddItem(To){

addItem(o,true);

}

publicList<T>getList(){

returnmLists;

}

/**

*初始化元素

*

*@paramlist

*/

publicvoidinitList(List<T>list){

mLists.clear();

mLists.addAll(list);

updateChange();

}

publicvoiddeleteItem(To){

mLists.remove(o);

updateChange();

}

publicvoiddeleteItem(intposition){

mLists.remove(position);

updateChange();

}

/**

*高度变为0后删除元素；

*

*@paramposition

*/

publicvoiddeleteItemWithAnim(finalintposition){

finalViewview=getIndexView(position);

finalintinitHeight=view.getMeasuredHeight();

Animationanim=newAnimation(){

@Override

protectedvoidapplyTransformation(floatinterpolatedTime,

Transformationt){

if(mLists.size()>0&&interpolatedTime==1){

//高度为0时删除元素，并更新adapter

if(view.getTag()instanceofLouHolder){

((LouHolder)view.getTag()).mark=LouHolder.MARK.DELETE;

deleteItem(position);

}

}else{

//不断的改变高度，直到高度为0；

view.getLayoutParams().height=initHeight

-(int)(initHeight*interpolatedTime);

view.requestLayout();

}

}

};

anim.setDuration(300);

view.startAnimation(anim);

}

publicvoidupdateChange(){

notifyDataSetChanged();

}

publicvoidclear(){

mLists.clear();

updateChange();

}

}