1500字范文 > Json解析后添加到ListView控件上

Json解析后添加到ListView控件上

时间：2020-01-29 14:44:46

主要实现的功能：就是将Jsonj解析后，显示在ListV iew控件上（包括网络取图片，是否显示劵、卡，团）

Json

这里看起来是比较乱的，所以要用Json工具视图打开，就会一层层的显示出来：

JSONresultCode : 1resultInfo : "SUCCESS"infopageInfomerchantKey0merchantID : "5327"name : "瑞庭竹岛酒店"coupon : "网上预定入住可享返现优惠"location : "四川省成都市高新区老成仁路8号"distance : "203m"picUrl : "/igme_pic/fe3e79c1f349474b98f06477bbdc009f.jpg"couponType : "YES"cardType : "NO"groupType : "NO"gpsX : 104.079935gpsY : 30.54066goodSayNum : 0midSayNum : 0badSayNum : 0123456789

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接下来就看看用代码实现其功能，首先从Json最里面一层一层外面写：

第一步：

package com.example.jsonlistview;

public class Totel {

private String merchantID;

private String name;

private String coupon;

private String location;

private String distance;

private String picUrl;

private String couponType;

private String cardType;

private String groupType;

private String gpsX;

private String gpsY;

private String goodSayNum;

private String midSayNum;

private String badSayNum;

public String getMerchantID() {

return merchantID;

}

public void setMerchantID(String merchantID) {

this.merchantID = merchantID;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getCoupon() {

return coupon;

}

public void setCoupon(String coupon) {

this.coupon = coupon;

}

public String getLocation() {

return location;

}

public void setLocation(String location) {

this.location = location;

}

public String getDistance() {

return distance;

}

public void setDistance(String distance) {

this.distance = distance;

}

public String getPicUrl() {

return picUrl;

}

public void setPicUrl(String picUrl) {

this.picUrl = picUrl;

}

public String getCouponType() {

return couponType;

}

public void setCouponType(String couponType) {

this.couponType = couponType;

}

public String getCardType() {

return cardType;

}

public void setCardType(String cardType) {

this.cardType = cardType;

}

public String getGroupType() {

return groupType;

}

public void setGroupType(String groupType) {

this.groupType = groupType;

}

public String getGpsX() {

return gpsX;

}

public void setGpsX(String gpsX) {

this.gpsX = gpsX;

}

public String getGpsY() {

return gpsY;

}

public void setGpsY(String gpsY) {

this.gpsY = gpsY;

}

public String getGoodSayNum() {

return goodSayNum;

}

public void setGoodSayNum(String goodSayNum) {

this.goodSayNum = goodSayNum;

}

public String getMidSayNum() {

return midSayNum;

}

public void setMidSayNum(String midSayNum) {

this.midSayNum = midSayNum;

}

public String getBadSayNum() {

return badSayNum;

}

public void setBadSayNum(String badSayNum) {

this.badSayNum = badSayNum;

}

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第二步：

package com.example.jsonlistview;

public class Pageinfo {

private int total;

private int pageSize;

private int lastPageNumber;

private int nowPage;

private int currNum;

public int getTotal() {

return total;

}

public void setTotal(int total) {

this.total = total;

}

public int getPageSize() {

return pageSize;

}

public void setPageSize(int pageSize) {

this.pageSize = pageSize;

}

public int getLastPageNumber() {

return lastPageNumber;

}

public void setLastPageNumber(int lastPageNumber) {

this.lastPageNumber = lastPageNumber;

}

public int getNowPage() {

return nowPage;

}

public void setNowPage(int nowPage) {

this.nowPage = nowPage;

}

public int getCurrNum() {

return currNum;

}

public void setCurrNum(int currNum) {

this.currNum = currNum;

}

--------------------------------------------------------------------------------------------------------------

第三步：

package com.example.jsonlistview;

public class Json {

private String resultCode;

private String resultInfo;

private InFo info;

public String getResultCode() {

return resultCode;

}

public void setResultCode(String resultCode) {

this.resultCode = resultCode;

}

public String getResultInfo() {

return resultInfo;

}

public void setResultInfo(String resultInfo) {

this.resultInfo = resultInfo;

}

public InFo getInfo() {

return info;

}

public void setInfo(InFo info) {

this.info = info;

}

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第四步：开始写适配器

package com.example.jsonlistview;

import java.util.ArrayList;

import java.util.List;

import android.content.Context;

import android.util.Log;

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.squareup.picasso.Picasso;

public class Myadapters extends BaseAdapter {

private List<UserBean> mList = new ArrayList<UserBean>();

private LayoutInflater mInflater;

private Context mcontext;

public Myadapters(Context context) {

mcontext = context;

mInflater = LayoutInflater.from(mcontext);

}

public void setData(List<UserBean> list) {

this.mList = list;

notifyDataSetChanged();

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return mList.size();

}

@Override

public Object getItem(int position) {

return mList.get(position);

}

@Override

public long getItemId(int position) {

return position;

}

public View getView1(int position, View convertView, ViewGroup parent) {

// TODO Auto-generated method stub

return null;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

Log.e("aa", "dasdasda");

ViewHolder holder;

if (convertView == null) {

holder = new ViewHolder();

convertView = mInflater.inflate(R.layout.listvtxtv, null);

holder.titleTxt = (TextView) convertView

.findViewById(R.id.listtex1);

holder.neirongTxt = (TextView) convertView

.findViewById(R.id.listtex2);

holder.infoTxt = (TextView) convertView.findViewById(R.id.listtex3);

holder.infoTxt1 = (TextView) convertView

.findViewById(R.id.listtex31);

holder.imageView = (ImageView) convertView.findViewById(R.id.imgs);

convertView.setTag(holder);

holder.imageViewj = (ImageView) convertView.findViewById(R.id.imgjj);

convertView.setTag(holder);

holder.imageViewtu = (ImageView) convertView.findViewById(R.id.imgtuan);

convertView.setTag(holder);

holder.imageViewka = (ImageView) convertView.findViewById(R.id.imgka);

convertView.setTag(holder);

} else {

holder = (ViewHolder) convertView.getTag();

}

//判斷劵卡团图案片是否显示

String jj=mList.get(position).getGroupType();

Log.e("jj", jj+"");

if(jj.equals("YES")){

holder.imageViewj.setVisibility(View.VISIBLE);

}

else{

holder.imageViewj.setVisibility(View.GONE);

}

String tuan=mList.get(position).getCardType();

if(tuan.equals("YES")){

holder.imageViewtu.setVisibility(View.VISIBLE);

}

else{

holder.imageViewtu.setVisibility(View.GONE);

}

String kas=mList.get(position).getCouponType();

if(kas.equals("YES")){

holder.imageViewka.setVisibility(View.VISIBLE);

}

else{

holder.imageViewka.setVisibility(View.GONE);

}

holder.neirongTxt.setText(mList.get(position).getName());

holder.titleTxt.setText(mList.get(position).getCoupon());

holder.infoTxt.setText(mList.get(position).getDistance());

holder.infoTxt1.setText(mList.get(position).getLocation());

//用Picasso进行网络取图片

Picasso.with(mcontext).load(mList.get(position).getPicUrl())

.into(holder.imageView);

return convertView;

}

class ViewHolder {

ImageView imageViewka=null;

ImageView imageViewtu=null;

ImageView imageViewj=null;

ImageView imageView = null;

TextView titleTxt = null;

TextView neirongTxt = null;

TextView infoTxt = null;

TextView infoTxt1 = null;

}

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第五步：第五步把json里边需要显示的属性建一个类写出来

package com.example.jsonlistview;

public class UserBean {

private String name;

private String coupon;

private String location;

private String distance;

private String picUrl;

private String couponType;

private String cardType;

private String groupType;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getCoupon() {

return coupon;

}

public void setCoupon(String coupon) {

this.coupon = coupon;

}

public String getLocation() {

return location;

}

public void setLocation(String location) {

this.location = location;

}

public String getDistance() {

return distance;

}

public void setDistance(String distance) {

this.distance = distance;

}

public String getPicUrl() {

return picUrl;

}

public void setPicUrl(String picUrl) {

this.picUrl = picUrl;

}

public String getCouponType() {

return couponType;

}

public void setCouponType(String couponType) {

this.couponType = couponType;

}

public String getCardType() {

return cardType;

}

public void setCardType(String cardType) {

this.cardType = cardType;

}

public String getGroupType() {

return groupType;

}

public void setGroupType(String groupType) {

this.groupType = groupType;

}

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第六步：第六步在主Activyi里面写异步（网络取数据）及添加json属性

package com.example.jsonlistview;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import .MalformedURLException;

import .URL;

import java.util.ArrayList;

import java.util.List;

import com.google.gson.Gson;

import android.app.Activity;

import android.database.MergeCursor;

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

import android.view.Window;

import android.widget.ListView;

public class JsonActivity extends Activity {

String http = "http://192.168.1.127:8080/json/around";

private ListView mListView;

private Myadapters myadapters;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.activity_json);

mListView = (ListView) findViewById(R.id.totellistview);

myadapters = new Myadapters(this);

mListView.setAdapter(myadapters);

new AsyncTask<String, Void, List<UserBean>>() {

@Override

protected List<UserBean> doInBackground(String... params) {

// TODO Auto-generated method stub

return getData();

}

@Override

protected void onPostExecute(List<UserBean> result) {

// TODO Auto-generated method stub

Log.e("result", result + "");

myadapters.setData(result);

}

}.execute();

}

private List<UserBean> getData() {

URL url = null;

InputStream is = null;

List<UserBean> mlist = new ArrayList<UserBean>();

StringBuffer sb = new StringBuffer();

BufferedReader br = null;

try {

url = new URL(http);

is = url.openStream();

br = new BufferedReader(new InputStreamReader(is));

Log.e("br", br+"");

} catch (MalformedURLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

String line = null;

try {

while ((line = br.readLine()) != null) {

sb.append(line);

}

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

Gson gson = new Gson();

Log.e("sb.", sb.toString());

Json json = gson.fromJson(sb.toString(), Json.class);

Log.e("json", json.getResultCode());

List<Totel> totel = json.getInfo().getMerchantKey();

for (Totel t : totel) {

UserBean userbean = new UserBean();

userbean.setName(t.getName());

userbean.setCoupon(t.getCoupon());

userbean.setLocation(t.getLocation());

userbean.setDistance(t.getDistance());

userbean.setPicUrl(t.getPicUrl());

userbean.setCardType(t.getCardType());

userbean.setCouponType(t.getCouponType());

userbean.setGroupType(t.getGroupType());

mlist.add(userbean);

}

return mlist;

}

-------------------------------------------------------------------

所有的类就写完了，下面把用到的XML补上

第一个是布局界面和listview

第二个Xml就是Myadapters用到的，主要就是在listview里面的内容布局以及控件。

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="horizontal" >

<ImageView

android:id="@+id/imgs"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:src="@drawable/a" />

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="vertical" >

<RelativeLayout

android:layout_width="match_parent"

android:layout_height="wrap_content">

<TextView

android:id="@+id/listtex1"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="10dp"

android:layout_marginTop="10dp"

android:singleLine="true"

android:text="fmsdpgfeggf"

android:maxEms="8"

android:textColor="@android:color/black" />

<ImageView

android:id="@+id/imgjj"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:layout_toRightOf="@id/listtex1"

android:src="@drawable/tuan_group"

<ImageView

android:id="@+id/imgtuan"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:src="@drawable/juan"

android:layout_toRightOf="@id/imgjj"

<ImageView

android:id="@+id/imgka"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:src="@drawable/near_card"

android:layout_toRightOf="@id/imgtuan"

</RelativeLayout>

<TextView

android:id="@+id/listtex2"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="10dp"

android:text="行的，那是否可"

android:textColor="@android:color/holo_red_dark" />

<RelativeLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content" >

<TextView

android:id="@+id/listtex31"

android:layout_width="150dp"

android:layout_height="wrap_content"

android:layout_marginLeft="10dp"

android:layout_marginTop="35dp"

android:ellipsize="end"

android:singleLine="true"

android:text="行的，那是否可以设置它左右滚动，不要向下换行"

android:textSize="12dp" />

<ImageView

android:id="@+id/imgviews"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/info_map"

android:layout_marginTop="38dp"

android:layout_toRightOf="@id/listtex31"/>

<TextView

android:id="@+id/listtex3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="8dp"

android:layout_marginTop="35dp"

android:layout_toRightOf="@id/imgviews"

android:textSize="12dp" />

</RelativeLayout>

</LinearLayout>

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