Android之ListView嵌套，访空间动态展示页面

项目需求，需要做动态展示功能，我的想法是每条动态的评论都是Listview，然后动态也是Listview，效果图是这样的

这个实现的难点主要是评论adapter和动态adapter的设计实现。

评论adapter是子Listview，与写其他adapter过程是一样的

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;import com.example.amei.tt.R;
import com.tt.amei.entity.Comment;import java.util.List;public class CommentAdapter extends BaseAdapter{private LayoutInflater layoutInflater;private List<Comment> commentList;//需要一个Context，通过Context获得Layout.inflater，然后通过inflater加载item的布局public CommentAdapter(Context context, List<Comment> comment) {layoutInflater = LayoutInflater.from(context);commentList = comment;}@Overridepublic int getCount() {return commentList.size();}@Overridepublic Object getItem(int position) {return commentList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder = null;if (convertView == null){convertView = layoutInflater.inflate(R.layout.commentitem,parent,false);holder = new ViewHolder();holder.isGoodComment = (ImageView)convertView.findViewById(R.id.isgoodcomment);holder.name = (TextView)convertView.findViewById(R.id.comname);holder.content = (TextView)convertView.findViewById(R.id.comcontent);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}Comment comment = commentList.get(position);holder.name.setText(comment.getUserId());holder.content.setText(comment.getText());holder.isGoodComment.setImageResource(comment.getIsgoodcomment());return convertView;}private class ViewHolder {ImageView isGoodComment;TextView name;TextView content;}
}

父adapter是动态的DynamicAdapter

这里有一个子listview显示不全的问题，解决办法是重新计算listview高度（借鉴别人的方法）


import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;import com.example.amei.tt.R;
import com.tt.amei.entity.Comment;
import com.tt.amei.entity.Dynamic;import java.util.List;public class DynamicAdapter extends BaseAdapter{private LayoutInflater layoutInflater;private List<Dynamic> dynamicList;private Context context;private CommentAdapter commentAdapter;private List<List<Comment>> commentDyList;//所有动态的评论public  DynamicAdapter(Context context, List<Dynamic> dynamics,List<List<Comment>> commentDyList){super();this.context = context;dynamicList = dynamics;layoutInflater = LayoutInflater.from(context);this.commentDyList = commentDyList;}@Overridepublic int getCount() {return dynamicList.size();}@Overridepublic Object getItem(int position) {return dynamicList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder = null;if (convertView == null){convertView = layoutInflater.inflate(R.layout.dynamiclayout,parent,false);holder = new ViewHolder();holder.content = (TextView)convertView.findViewById(R.id.showInfo);holder.dynamicUserName = (TextView)convertView.findViewById(R.id.userName);holder.dyTime = (TextView)convertView.findViewById(R.id.tvAge);holder.dyUserHeadima = (ImageView)convertView.findViewById(R.id.iv_leftlogo);holder.likenum = (TextView)convertView.findViewById(R.id.dianzan_nums);holder.dislikenum = (TextView)convertView.findViewById(R.id.tramplenum);holder.giftnum = (TextView)convertView.findViewById(R.id.giftnums);holder.commentnum = (TextView)convertView.findViewById(R.id.pinglun_nums);holder.sharenum = (TextView)convertView.findViewById(R.id.fenxiang_nums);holder.comment = (ListView)convertView.findViewById(R.id.comment);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}

//常规写法

        Dynamic dynamic = dynamicList.get(position);holder.content.setText(dynamic.getText());holder.dynamicUserName.setText(dynamic.getDynamicUserName());holder.dyTime.setText(dynamic.getDyTime());holder.dyUserHeadima.setImageResource(dynamic.getDyUserHeadima());holder.likenum.setText(String.valueOf(dynamic.getFivenums(0)));holder.dislikenum.setText(String.valueOf(dynamic.getFivenums(1)));       holder.giftnum.setText(String.valueOf(dynamic.getFivenums(2)));      holder.commentnum.setText(String.valueOf(dynamic.getFivenums(3)));holder.sharenum.setText(String.valueOf(dynamic.getFivenums(4)));

        /*** 每条动态的评论适配* commentDyList是所有动态的评论，类型为List<List<Comment>>* */commentAdapter = new CommentAdapter(context,commentDyList.get(position));holder.comment.setAdapter(commentAdapter);//重新计算listview 的高度setListViewHeight(holder.comment);return convertView;}private class ViewHolder {TextView content;//内容TextView dynamicUserName;//昵称ImageView dyUserHeadima;//头像TextView dyTime;//距离发动态时间TextView likenum;TextView dislikenum;TextView giftnum;TextView commentnum;TextView sharenum;ListView comment;//动态的评论}/***重新计算listview 的高度* 解决嵌套的Listview显示不全的问题* */public void setListViewHeight(ListView listView) {ListAdapter listAdapter = listView.getAdapter();if (listAdapter == null) {return;}int totalHeight = 0;for (int i = 0; i < listAdapter.getCount(); i++) {View listItem = listAdapter.getView(i, null, listView);listItem.measure(0, 0);totalHeight += listItem.getMeasuredHeight();}ViewGroup.LayoutParams params = listView.getLayoutParams();params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));listView.setLayoutParams(params);}}

Activity中要写的是


import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ListView;import com.example.amei.tt.R;
import com.tt.amei.adapter.DynamicAdapter;
import com.tt.amei.entity.Comment;
import com.tt.amei.entity.Dynamic;import java.util.ArrayList;
import java.util.List;public class DynamicActivity extends AppCompatActivity{private DynamicAdapter dynamicAdapter;private ListView listDynamic;/*** 评论内容* 评论数据初始化* */private List<Dynamic> dynamicList;private List<Comment> commentList;private List<List<Comment>> dynamicCommentList;public void initCommentData(){dynamicCommentList = new ArrayList<>();commentList = new ArrayList<Comment>();Comment comment = new Comment("汪洋",":一切都在改变，唯独你的样子在我心中没变",R.mipmap.goodcomment);commentList.add(comment);comment = new Comment("周用",":特别好！",0);commentList.add(comment);comment = new Comment("丫丫",":我喜欢你的图片！",0);commentList.add(comment);comment = new Comment("海天相接",":同意楼上！",0);commentList.add(comment);dynamicCommentList.add(commentList);commentList = new ArrayList<Comment>();comment = new Comment("漱芳华",":一切都在改变1",R.mipmap.goodcomment);commentList.add(comment);comment = new Comment("周用",":特别好666！",0);commentList.add(comment);comment = new Comment("丫丫",":我喜欢你的图片！",0);commentList.add(comment);dynamicCommentList.add(commentList);commentList = new ArrayList<Comment>();dynamicCommentList.add(commentList);commentList = new ArrayList<Comment>();dynamicCommentList.add(commentList);commentList = new ArrayList<Comment>();dynamicCommentList.add(commentList);commentList = new ArrayList<Comment>();dynamicCommentList.add(commentList);commentList = new ArrayList<Comment>();comment = new Comment("丫丫",":我喜欢你的图片！",R.mipmap.goodcomment);commentList.add(comment);comment = new Comment("海天相接",":同意楼上！",0);commentList.add(comment);dynamicCommentList.add(commentList);}/*** 动态数据初始化*/public void initDynamic(){dynamicList = new ArrayList<Dynamic>();int[] fivenums1 = {20,1,2,1,3};int[] fivenums2 = {0,1,2,0,1};int[] fivenums3 = {20,1,2,1,5};int[] fivenums4 = {10,1,0,1,2};int[] fivenums5 = {2,1,2,1,0};int[] fivenums6 = {6,0,2,1,3};int[] fivenums7 = {9,1,0,1,0};Dynamic dynamic = new Dynamic("111111111111l","无法无天","2分钟前",R.drawable.blurima,dynamicCommentList.get(0),fivenums1);dynamicList.add(dynamic);dynamic = new Dynamic("la2222222222222222l11111","破小流苏","20分钟前",R.drawable.blurima2,dynamicCommentList.get(1),fivenums2);dynamicList.add(dynamic);dynamic = new Dynamic("lal33333333l22222","急疯的兔子会咬人","1小时前",R.drawable.blurima3,dynamicCommentList.get(2),fivenums3);dynamicList.add(dynamic);dynamic = new Dynamic("lalalalallalal33333","阿拉蕾","2小时前",R.drawable.blurima4,dynamicCommentList.get(3),fivenums4);dynamicList.add(dynamic);dynamic = new Dynamic("lalalalallalal44444","无法无天","1天前",R.drawable.blurima2,dynamicCommentList.get(4),fivenums5);dynamicList.add(dynamic);dynamic = new Dynamic("lalalalallalal55555","无法无天","1天前",R.drawable.blurima3,dynamicCommentList.get(5),fivenums6);dynamicList.add(dynamic);dynamic = new Dynamic("la6666666666666","无法无天","10-15",R.drawable.blurima4,dynamicCommentList.get(6),fivenums7);dynamicList.add(dynamic);}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.dynamiclist);findview();initCommentData();initDynamic();init();}public void findview(){listDynamic = (ListView)findViewById(R.id.dynamiclist);}public void init(){dynamicAdapter = new DynamicAdapter(this,dynamicList,dynamicCommentList);listDynamic.setAdapter(dynamicAdapter);}
}

initCommentData();
initDynamic();

这两个为评论数据和动态数据的初始化。

Comment类和Dynamic类不详细说明，我觉得关键就是父Adapter的内容。

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