版權(quán)說明：本文檔由用戶提供并上傳，收益歸屬內(nèi)容提供方，若內(nèi)容存在侵權(quán)，請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)
文檔簡(jiǎn)介
【移動(dòng)應(yīng)用開發(fā)技術(shù)】AndroidRecyclerView如何實(shí)現(xiàn)多種item布局
/upload/information/20200623/125/125132.jpg/upload/information/20200623/125/125133.jpg@Override
public
int
getItemViewType(int
position)
{
if(list.size()
==
0){
return
EMPTY_VIEW;
}
else
if(list.get(position)
==
null){
return
PROGRESS_VIEW;
}
else
if(list.get(position).getType().equals(News.IMAGE_NEWS)){
return
IMAGE_VIEW;
}
else
{
return
super.getItemViewType(position);
}
}@Override
public
RecyclerView.ViewHolder
onCreateViewHolder(ViewGroup
parent,
int
viewType)
{
View
view;
if(viewType
==
PROGRESS_VIEW){
view
=
LayoutInflater.from(parent.getContext()).inflate(R.gressbar_item,
parent,
false);
return
new
ProgressViewHolder(view);
}
else
if(viewType
==
EMPTY_VIEW){
return
null;
}
else
if(viewType
==
IMAGE_VIEW){
view
=
LayoutInflater.from(parent.getContext()).inflate(R.layout.image_news_item,
parent,
false);
return
new
ImageViewHolder(view);
}
else
{
view
=
LayoutInflater.from(parent.getContext()).inflate(R.layout.news_item,
parent,
false);
return
new
NewsViewHolder(view);
}
}class
NewsViewHolder
extends
RecyclerView.ViewHolder{
@BindView(R.id.news_title)TextView
title;
@BindView(R.id.news_digest)TextView
digest;
@BindView(R.id.news_time)TextView
time;
@BindView(R.id.news_src)ImageView
image;
public
NewsViewHolder(View
itemView)
{
super(itemView);
ButterKnife.bind(this,
itemView);
}
}
class
ImageViewHolder
extends
RecyclerView.ViewHolder{
@BindView(R.id.news_title)
TextView
title;
@BindView(R.id.image_left)
ImageView
imageLeft;
@BindView(R.id.image_right)
ImageView
imageRight;
@BindView(R.id.image_middle)
ImageView
imageMiddle;
@BindView(R.id.news_time)
TextView
time;
public
ImageViewHolder(View
itemView)
{
super(itemView);
ButterKnife.bind(this,
itemView);
}
}
class
ProgressViewHolder
extends
RecyclerView.ViewHolder
{
@BindView(R.gressBar)
ProgressBar
progressBar;
@BindView(R.id.textView)
TextView
textView;
public
ProgressViewHolder(View
itemView)
{
super(itemView);
ButterKnife.bind(this,
itemView);
}
}@Override
public
void
onBindViewHolder(RecyclerView.ViewHolder
holder,
final
int
position)
{
holder.itemView.setOnClickListener(new
View.OnClickListener()
{
@Override
public
void
onClick(View
v)
{
clickListener.onItemClick(v,
position);
}
});
if(holder
instanceof
NewsViewHolder){
NewsViewHolder
viewHolder
=
(NewsViewHolder)holder;
viewHolder.title.setText(list.get(position).getTitle());
viewHolder.time.setText(list.get(position).getTime());
/**
*
Glide加載圖片
*/
Glide.with(context).load(list.get(position).getImageUrl().get(0))
.override(dpToPx(72),
dpToPx(72)).centerCrop().into(viewHolder.image);
if(list.get(position).getType().equals(News.TEXT_NEWS)){
viewHolder.digest.setText(list.get(position).getDigest());
}
else
{
viewHolder.digest.setText("");
}
}
else
if(holder
instanceof
ImageViewHolder){
ImageViewHolder
viewHolder
=
(ImageViewHolder)holder;
viewHolder.title.setText(list.get(position).getTitle());
viewHolder.time.setText(list.get(position).getTime());
setItemImage(viewHolder,
list,
position);
}
else
if(holder
instanceof
ProgressViewHolder){
ProgressViewHolder
viewHolder
=
(ProgressViewHolder)holder;
viewHgressBar.setIndeterminate(true);
}
}package
com.zmt.e_read.Adapter;
import
android.content.Context;
import
android.support.v7.widget.RecyclerView;
import
android.util.DisplayMetrics;
import
android.view.LayoutInflater;
import
android.view.View;
import
android.view.ViewGroup;
import
android.widget.ImageView;
import
android.widget.TextView;
import
com.bumptech.glide.Glide;
import
com.zmt.e_read.Module.News;
import
com.zmt.e_read.Module.OnItemClickListener;
import
com.zmt.e_read.R;
import
com.zmt.e_read.Utils.ProgressViewHolder;
import
java.util.Collection;
import
java.util.Collections;
import
java.util.List;
import
butterknife.BindView;
import
butterknife.ButterKnife;
/**
*
Created
by
Dangelo
on
2016/9/27.
*/
public
class
NewsAdapter
extends
RecyclerView.Adapter<RecyclerView.ViewHolder>
{
private
final
int
EMPTY_VIEW
=
1;
private
final
int
PROGRESS_VIEW
=
2;
private
final
int
IMAGE_VIEW
=
3;
private
Context
context;
private
List<News>
list;
private
OnItemClickListener
clickListener;
public
NewsAdapter(Context
context,
List<News>
list,
OnItemClickListener
clickListener)
{
this.context
=
context;
this.list
=
list;
this.clickListener
=
clickListener;
}
public
void
addOnItemClickListener(OnItemClickListener
clickListener){
this.clickListener
=
clickListener;
}
@Override
public
int
getItemViewType(int
position)
{
if(list.size()
==
0){
return
EMPTY_VIEW;
}
else
if(list.get(position)
==
null){
return
PROGRESS_VIEW;
}
else
if(list.get(position).getType().equals(News.IMAGE_NEWS)){
return
IMAGE_VIEW;
}
else
{
return
super.getItemViewType(position);
}
}
@Override
public
RecyclerView.ViewHolder
onCreateViewHolder(ViewGroup
parent,
int
viewType)
{
View
view;
if(viewType
==
PROGRESS_VIEW){
view
=
LayoutInflater.from(parent.getContext()).inflate(R.gressbar_item,
parent,
false);
return
new
ProgressViewHolder(view);
}
else
if(viewType
==
EMPTY_VIEW){
return
null;
}
else
if(viewType
==
IMAGE_VIEW){
view
=
LayoutInflater.from(parent.getContext()).inflate(R.layout.image_news_item,
parent,
false);
return
new
ImageViewHolder(view);
}
else
{
view
=
LayoutInflater.from(parent.getContext()).inflate(R.layout.news_item,
parent,
false);
return
new
NewsViewHolder(view);
}
}
@Override
public
void
onBindViewHolder(RecyclerView.ViewHolder
holder,
final
int
position)
{
holder.itemView.setOnClickListener(new
View.OnClickListener()
{
@Override
public
void
onClick(View
v)
{
clickListener.onItemClick(v,
position);
}
});
if(holder
instanceof
NewsViewHolder){
NewsViewHolder
viewHolder
=
(NewsViewHolder)holder;
viewHolder.title.setText(list.get(position).getTitle());
viewHolder.time.setText(list.get(position).getTime());
/**
*
Glide加載圖片
*/
Glide.with(context).load(list.get(position).getImageUrl().get(0))
.override(dpToPx(72),
dpToPx(72)).centerCrop().into(viewHolder.image);
if(list.get(position).getType().equals(News.TEXT_NEWS)){
viewHolder.digest.setText(list.get(position).getDigest());
}
else
{
viewHolder.digest.setText("");
}
}
else
if(holder
instanceof
ImageViewHolder){
ImageViewHolder
viewHolder
=
(ImageViewHolder)holder;
viewHolder.title.setText(list.get(position).getTitle());
viewHolder.time.setText(list.get(position).getTime());
setItemImage(viewHolder,
list,
position);
}
else
if(holder
instanceof
ProgressViewHolder){
ProgressViewHolder
viewHolder
=
(ProgressViewHolder)holder;
viewHgressBar.setIndeterminate(true);
}
}
public
void
setItemImage(ImageViewHolder
viewHolder,
List<News>
list,
int
position){
viewHolder.imageMiddle.setVisibility(View.VISIBLE);
viewHolder.imageRight.setVisibility(View.VISIBLE);
DisplayMetrics
displayMetrics
=
context.getResources().getDisplayMetrics();
if(list.get(position).getImageUrl().size()
==
1){
Glide.with(context).load(list.get(position).getImageUrl().get(0))
.override(displayMetrics.widthPixels
-
dpToPx(10),
dpToPx(90))
.centerCrop().into(viewHolder.imageLeft);
viewHolder.imageMiddle.setVisibility(View.GONE);
viewHolder.imageRight.setVisibility(View.GONE);
}
else
if(list.get(position).getImageUrl().size()
==
2){
int
imageWidth
=
(displayMetrics.widthPixels
-
dpToPx(20))
/
2;
Glide.with(context).load(list.get(position).getImageUrl().get(0))
.override(imageWidth,
dpToPx(90))
.centerCrop().into(viewHolder.imageLeft);
Glide.with(context).load(list.get(position).getImageUrl().get(1))
.override(imageWidth,
dpToPx(90))
.centerCrop().into(viewHolder.imageMiddle);
viewHolder.imageRight.setVisibility(View.GONE);
}
else
if(list.get(position).getImageUrl().size()
>=
3){
int
imageWidth
=
(displayMetrics.widthPixels
-
dpToPx(30))
/
3;
Glide.with(context).load(list.get(position).getImageUrl().get(0))
.override(imageWidth,
dpToPx(90))
.centerCrop().into(viewHolder.imageLeft);
Glide.with(context).load(list.get(position).getImageUrl().get(1))
.override(imageWidth,
dpToPx(90))
.centerCrop().into(viewHolder.imageMiddle);
Glide.with(context).load(list.get(position).getImageUrl().get(2))
.override(imageWidth,
dpToPx(90))
.centerCrop().into(viewHolder.imageRight);
}
}
@Override
public
int
getItemCount()
{
return
list.size();
}
public
int
dpToPx(float
dp){
float
px
=
context.getResources().getDisplayMetrics().density;
return
(int)(dp
*
px
+
0.5f);
}
class
NewsViewHolder
extends
RecyclerView.ViewHolder{
@BindView(R.id.news_title)TextView
溫馨提示
- 1. 本站所有資源如無特殊說明，都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等，如果需要附件，請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙，網(wǎng)頁(yè)內(nèi)容里面會(huì)有圖紙預(yù)覽，若沒有圖紙預(yù)覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫(kù)網(wǎng)僅提供信息存儲(chǔ)空間，僅對(duì)用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理，對(duì)用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯，并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
- 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容，請(qǐng)與我們聯(lián)系，我們立即糾正。
- 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。
最新文檔
- 房屋委托管理合同
- 計(jì)算機(jī)網(wǎng)絡(luò)的基本拓?fù)浣Y(jié)構(gòu)試題及答案
- 高品質(zhì)住宅裝修施工及驗(yàn)收合同
- 人力資源管理理論及應(yīng)用測(cè)試題
- 能源行業(yè)數(shù)據(jù)分析試題
- 研究2025年計(jì)算機(jī)三級(jí)數(shù)據(jù)庫(kù)常考試題
- 商業(yè)活動(dòng)場(chǎng)地租賃合同書及補(bǔ)充條款
- 計(jì)算機(jī)二級(jí)MySQL內(nèi)容概覽與解析試題及答案
- 行政管理理論必考試題及答案詳解
- 行政組織決策的重要因素試題及答案
- 工業(yè)園區(qū)裝修管理規(guī)定
- 2024年第二次廣東省普通高中生物學(xué)業(yè)水平合格性考試含答案
- 夏季高溫施工安全防暑降溫
- 2025屆天津楊村一中高三-化學(xué)試卷
- 不孕癥婦女的護(hù)理課件
- 新版工程開工報(bào)告表格
- TCHSA 079-2024 唇腭裂患者替牙期錯(cuò)牙合畸形矯治指南
- 統(tǒng)編版（2024）七年級(jí)下冊(cè)語(yǔ)文期末復(fù)習(xí)：詞語(yǔ)、成語(yǔ)運(yùn)用 刷題練習(xí)題（含答案解析）
- 綜合實(shí)踐項(xiàng)目栽培一種植物探究所需的環(huán)境條件課件-人教版生物七年級(jí)下冊(cè)
- 軌道交通電工基本技能與實(shí)訓(xùn)課件 項(xiàng)目7 三相異步電動(dòng)機(jī)點(diǎn)動(dòng)和連續(xù)運(yùn)行控制電路安裝與調(diào)試
- 有效問題解決培訓(xùn)
評(píng)論
0/150
提交評(píng)論