MVPXlistView展示上拉下拉效果

本文实例为大家分享了mvpxlistview上拉下拉展示的具体代码，供大家参考，具体内容如下

抽基类

package com.gs.gg.day8.back;
 
import android.os.bundle;
import android.support.annotation.nullable;
import android.support.v7.app.appcompatactivity;
 
public abstract class backactivity extends appcompatactivity {
 @override
 protected void oncreate(@nullable bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  init();
 }
 
 protected abstract int getlayout();
 protected abstract void initviews();
 protected abstract void setonclick();
 protected abstract void processlogic();
 void init(){
  if (getlayout()!=0){
   setcontentview(getlayout());
   initviews();
   setonclick();
   processlogic();
  }else {
   throw new illegalstateexception("请加载布局文件");
  }
 }
}

model

package com.gs.gg.day8.model;
 
import com.gs.gg.day8.callbase.mycallbase;
 
public interface model {
 void getdata(string murl,string parants,mycallbase callbase);
}

mycallbase

package com.gs.gg.day8.callbase;
 
import com.gs.gg.day8.bean.user;
 
public interface mycallbase {
 void setdata(user data);
 void seterror(string error);
}

modelimpl

package com.gs.gg.day8.model;
 
import android.os.handler;
import android.os.looper;
import android.os.message;
 
import com.google.gson.gson;
import com.gs.gg.day8.r;
import com.gs.gg.day8.bean.user;
import com.gs.gg.day8.callbase.mycallbase;
import com.gs.gg.day8.util.httputils;
 
import java.net.url;
 
public class modelimpl implements model {
 private handler handler=new handler(){
  @override
  public void handlemessage(message msg) {
   super.handlemessage(msg);
   string jsonstr= (string) msg.obj;
   gson gson=new gson();
   user user= gson.fromjson(jsonstr,user.class);
   callbase.setdata(user);
  }
 };
 private mycallbase callbase;
 @override
 public void getdata(final string murl, string parants, final mycallbase callbase) {
  this.callbase=callbase;
  new thread(new runnable() {
   @override
   public void run() {
    try {
     string json = httputils.get(murl);
     handler.sendmessage(handler.obtainmessage(0,json));
    } catch (exception e) {
     looper.prepare();
     callbase.seterror("异常");
     looper.loop();
    }
   }
  }).start();
 }
}

httputils

package com.gs.gg.day8.util;
 
import java.io.bufferedreader;
import java.io.ioexception;
import java.io.inputstream;
import java.io.inputstreamreader;
import java.net.httpurlconnection;
import java.net.url;
 
public class httputils {
 public static string get(string murl) throws exception {
  url url=new url(murl);
  httpurlconnection connection = (httpurlconnection) url.openconnection();
  //设置请求方式
  connection.setrequestmethod("get");
  connection.setconnecttimeout(5000);
  inputstream stream = connection.getinputstream();
  string inputstr = getinputstr(stream);
  return inputstr;
 }
 
 //把流转成字符串
 private static string getinputstr(inputstream stream) throws ioexception {
  bufferedreader br = new bufferedreader(new inputstreamreader(stream));
  stringbuffer sb = new stringbuffer();
  string str = null;
  while ((str = br.readline()) != null) {
   sb.append(str);
  }
  return sb.tostring();
 }
}

iview

package com.gs.gg.day8.view;
 
import com.gs.gg.day8.bean.user;
 
public interface iview {
 void success(user data);
 void error(string error);
}

presenter

package com.gs.gg.day8.presenter;
 
public interface presenter {
 void startreponse(string url,string parants);
}

presenterimpl

package com.gs.gg.day8.presenter;
 
import com.gs.gg.day8.bean.user;
import com.gs.gg.day8.callbase.mycallbase;
import com.gs.gg.day8.model.modelimpl;
import com.gs.gg.day8.view.iview;
 
public class presenterimpl implements presenter {
 private iview iview;
 private modelimpl model;
 
 public presenterimpl(iview iview) {
  this.iview = iview;
  model = new modelimpl();
 }
 
 @override
 public void startreponse(string murl, string parants) {
  model.getdata(murl,parants, new mycallbase() {
   @override
   public void setdata(user data) {
    iview.success(data);
   }
 
   @override
   public void seterror(string error) {
    iview.error(error);
   }
  });
 }
 public void ondotch(){
  if (iview!=null){
   iview=null;
  }
  if (model!=null){
   model=null;
  }
 }
}

mainactivity

package com.gs.gg.day8;
 
import android.widget.toast;
 
import com.gs.gg.day8.adapter.myadapter;
import com.gs.gg.day8.back.backactivity;
import com.gs.gg.day8.bean.user;
import com.gs.gg.day8.presenter.presenterimpl;
import com.gs.gg.day8.view.iview;
import com.gs.gg.myxlist.me.maxwin.view.xlistview;
 
import java.util.arraylist;
 
public class mainactivity extends backactivity implements iview,xlistview.ixlistviewlistener {
 
 private xlistview xlist_item;
 private presenterimpl presenter;
 private arraylist<user.databean> mlist=new arraylist<>();
 private string muurl="http://www.xieast.com/api/news/news.php?page=";
 private int i=1;
 private myadapter adapter;
 
 @override
 protected int getlayout() {
  return r.layout.activity_main;
 }
 
 @override
 protected void initviews() {
  xlist_item = findviewbyid(r.id.xlist_item);
 }
 
 @override
 protected void setonclick() {
  xlist_item.setpullloadenable(true);
  xlist_item.setxlistviewlistener(this);
 }
 
 @override
 protected void processlogic() {
  presenter = new presenterimpl(this);
  adapter = new myadapter(mainactivity.this,mlist);
  xlist_item.setadapter(adapter);
  presenter.startreponse(muurl+i, null);
 }
 
 @override
 public void success(user data) {
  mlist.addall(data.getdata());
  adapter.notifydatasetchanged();
  stop();
 }
 
 @override
 public void error(string error) {
  toast.maketext(this, "异常", toast.length_short).show();
 }
 private void stop() {
  xlist_item.stoprefresh();
  xlist_item.stoploadmore();
 }
 
 @override
 public void onrefresh() {
  i = 1;
  mlist.clear();
  presenter.startreponse(muurl + i, null);
 }
 
 @override
 public void onloadmore() {
  i++;
  presenter.startreponse(muurl + i, null);
 }
}

myadapter

package com.gs.gg.day8.adapter;
 
import android.content.context;
import android.view.view;
import android.view.viewgroup;
import android.widget.baseadapter;
import android.widget.imageview;
import android.widget.textview;
 
import com.gs.gg.day8.r;
import com.gs.gg.day8.bean.user;
import com.nostra13.universalimageloader.core.imageloader;
 
import java.util.arraylist;
 
public class myadapter extends baseadapter {
 public myadapter(context context, arraylist<user.databean> mlist) {
  this.context = context;
  this.mlist = mlist;
 }
 
 private context context;
 private arraylist<user.databean> mlist;
 
 @override
 public int getcount() {
  return mlist.size();
 }
 
 @override
 public object getitem(int position) {
  return mlist.get(position);
 }
 
 @override
 public long getitemid(int position) {
  return position;
 }
 
 @override
 public view getview(int position, view convertview, viewgroup parent) {
  holderview holder=null;
  if (convertview==null){
   convertview= view.inflate(context, r.layout.item,null);
   holder=new holderview();
   holder.textname=convertview.findviewbyid(r.id.text);
   holder.imagename=convertview.findviewbyid(r.id.image);
   convertview.settag(holder);
  }else {
   holder= (holderview) convertview.gettag();
  }
  user.databean bean = mlist.get(position);
  holder.textname.settext(bean.gettitle());
  imageloader.getinstance().displayimage(mlist.get(position).getthumbnail_pic_s(),holder.imagename);
  return convertview;
 }
 class holderview{
  textview textname;
  imageview imagename;
 }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。