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Android分页中显示出下面翻页的导航栏的布局实例代码

程序员文章站 2022-05-30 18:17:18
当页面条目过多的时候需要分页,要在布局中显示出分页的相关布局,使用android:layout_weight="11" activity_call_safe.xml...

当页面条目过多的时候需要分页,要在布局中显示出分页的相关布局,使用android:layout_weight="11"

activity_call_safe.xml

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical" >
  <textview 
 style="@style/titlestyle"
   android:text="黑名单管理"
    />
  <framelayout 
    android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:layout_weight="11"
    >
    <linearlayout 
      android:id="@+id/ll_pb"
      android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:visibility="invisible"
    android:orientation="vertical"
    >
    <progressbar
      android:layout_width="wrap_content"
    android:layout_height="wrap_content"
      />
    <textview 
      android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="玩命加载中..."
      />
    </linearlayout>
   <include 
     android:id="@+id/list_view_callsafe"
     layout="@layout/list_view_callsafe"/>
  </framelayout>
  <linearlayout 
    android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:orientation="horizontal"
    >
    <button 
      android:onclick="prepage"
      android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="上一页"
    android:layout_weight="1"
      />
 <button 
      android:onclick="nextpage"
      android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="下一页"
    android:layout_weight="1"
      /> 
 <button 
      android:onclick="jump"
      android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="跳转"
    android:layout_weight="1"
      /> 
     <edittext 
      android:id="@+id/et_page_number"
      android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
       />
     <textview 
      android:id="@+id/tv_page_number"
      android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="0/12"
    android:textsize="20sp"
    android:layout_weight="1"
       />         
  </linearlayout>
</linearlayout>

逻辑文件,实现分页显示,页面的跳转,页数的显示,数据的删除同时更新listview

package com.ldw.safe.activity;
import java.util.list;
import android.app.activity;
import android.content.context;
import android.os.bundle;
import android.os.handler;
import android.os.message;
import android.text.textutils;
import android.view.view;
import android.view.view.onclicklistener;
import android.view.viewgroup;
import android.widget.adapter;
import android.widget.edittext;
import android.widget.imageview;
import android.widget.linearlayout;
import android.widget.listview;
import android.widget.textview;
import android.widget.toast;
import com.ldw.safe.r;
import com.ldw.safe.adapter.mybaseadapter;
import com.ldw.safe.bean.blacknumberinfo;
import com.ldw.safe.db.dao.blacknumberdao;
public class callsafeactivity extends activity {
 private listview list_view_callsafe;
 private list<blacknumberinfo> blacknumberinfos;
 private linearlayout ll_pb;
 private blacknumberdao dao;
 private textview tv_page_number;
 private int pagenumber;
 private int mpagesize = 20;//每一页显示多少数据
 private int mcurrentpagenumber = 0;//当前页面
 private int totalpage;
 private callsafeadapter adapter;
 @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_call_safe);
    initui();
    initdata();
 }
 //初始化数据
 private handler handler = new handler(){
 @override
    public void handlemessage(message msg) {
  //通过总数,和每页显示多少条显示有多少条数据
  tv_page_number.settext(mcurrentpagenumber + "/" + totalpage);
  //数据初始化结束,关闭家在全的展示
  ll_pb.setvisibility(view.invisible);
  adapter = new callsafeadapter(blacknumberinfos, callsafeactivity.this);
  //配置适配器
  list_view_callsafe.setadapter(adapter);
 }
 };
 private edittext et_page_number;
 //初始化数据
 private void initdata() {
 //防止阻塞主线程,在子线程中初始化数据(后期数据会很多)
 new thread(){
  @override
  public void run(){
  dao = new blacknumberdao(callsafeactivity.this);
  //获取到总条数和页数
  totalpage = dao.gettotalnumber() / mpagesize;
  //获取到表的所有数据
  //blacknumberinfos = dao.findall();
  //分页显示数据
  blacknumberinfos = dao.findpar(mcurrentpagenumber, mpagesize);
  handler.sendemptymessage(0);
  }
 }.start();
 }
 //初始化ui
 private void initui() {
 ll_pb = (linearlayout) findviewbyid(r.id.ll_pb);
    //初始化的时候展示加载的圆圈
    ll_pb.setvisibility(view.visible);
 list_view_callsafe = (listview) findviewbyid(r.id.list_view_callsafe);
 tv_page_number = (textview) findviewbyid(r.id.tv_page_number);
 et_page_number = (edittext) findviewbyid(r.id.et_page_number);
 }
 //对代码进行优化,继承自定义mybaseadapter,mybaseadapter继承自baseadapter封装一些常用的方法
 private class callsafeadapter extends mybaseadapter<blacknumberinfo>{
 private callsafeadapter(list lists, context mcontext){
  super(lists, mcontext);
 }
 @override
 public view getview(int position, view convertview, viewgroup parent) {
  //谷歌推出的优化方案
  viewholder holder;
  if(convertview == null){
  convertview = view.inflate(callsafeactivity.this, r.layout.item_call_safe, null);
  holder = new viewholder();
  holder.tv_number = (textview) convertview.findviewbyid(r.id.tv_number);
  holder.tv_mode = (textview) convertview.findviewbyid(r.id.tv_mode);
  holder.iv_delete = (imageview) convertview.findviewbyid(r.id.iv_delete);
  convertview.settag(holder);
  }else{
  holder = (viewholder) convertview.gettag();
  }
  holder.tv_number.settext(lists.get(position).getnumber());
  string mode = lists.get(position).getmode();
  if(mode.equals("1")){
  holder.tv_mode.settext("电话和短信拦截");
  }else if(mode.equals("2")){
  holder.tv_mode.settext("电话拦截");
  }else if(mode.equals("3")){
  holder.tv_mode.settext("短信拦截");
  }
  final blacknumberinfo info = lists.get(position);
  //监听删除数据按钮,删除数据
  holder.iv_delete.setonclicklistener(new onclicklistener(){
  @override
  public void onclick(view v) {
   string number = info.getnumber();
   boolean result = dao.delete(number);
   if(result){
   toast.maketext(callsafeactivity.this, "删除成功", toast.length_short).show();
   lists.remove(info);
   //更新listview
   adapter.notifydatasetchanged();
   }else{
   toast.maketext(callsafeactivity.this, "删除失败", toast.length_short).show();
   }
  }
  });
  return convertview;
  /*
  //谷歌推出的优化方案
  viewholder holder;
  if(convertview == null){
  convertview = view.inflate(callsafeactivity.this, r.layout.item_call_safe, null);
  holder = new viewholder();
  holder.tv_number = (textview) convertview.findviewbyid(r.id.tv_number);
  holder.tv_mode = (textview) convertview.findviewbyid(r.id.tv_mode);
  convertview.settag(holder);
  }else{
  holder = (viewholder) convertview.gettag();
  }
  holder.tv_number.settext(blacknumberinfos.get(position).getnumber());
  string mode = blacknumberinfos.get(position).getmode();
  if(mode.equals("1")){
  holder.tv_mode.settext("电话和短信拦截");
  }else if(mode.equals("2")){
  holder.tv_mode.settext("电话拦截");
  }else if(mode.equals("3")){
  holder.tv_mode.settext("短信拦截");
  }
  return convertview;
  */
  /*初步的优化
  convertview = view.inflate(callsafeactivity.this, r.layout.item_call_safe, null);
  textview tv_number = (textview) convertview.findviewbyid(r.id.tv_number);
  textview tv_mode = (textview) convertview.findviewbyid(r.id.tv_mode);
  tv_number.settext(blacknumberinfos.get(position).getnumber());
  string mode = blacknumberinfos.get(position).getmode();
  if(mode.equals("1")){
  tv_mode.settext("电话和短信拦截");
  }else if(mode.equals("2")){
  tv_mode.settext("电话拦截");
  }else if(mode.equals("3")){
  tv_mode.settext("短信拦截");
  }
  return convertview;
  */
  /*传统的方式
  view view = view.inflate(callsafeactivity.this, r.layout.item_call_safe, null);
  textview tv_number = (textview) view.findviewbyid(r.id.tv_number);
  textview tv_mode = (textview) view.findviewbyid(r.id.tv_mode);
  tv_number.settext(blacknumberinfos.get(position).getnumber());
  string mode = blacknumberinfos.get(position).getmode();
  if(mode.equals("1")){
  tv_mode.settext("电话和短信拦截");
  }else if(mode.equals("2")){
  tv_mode.settext("电话拦截");
  }else if(mode.equals("3")){
  tv_mode.settext("短信拦截");
  }
  return view;
  */
 } 
 }
 static class viewholder{
 textview tv_number;
 textview tv_mode;
 imageview iv_delete;
 }
 /*
 * 上一页
 */
 public void prepage(view v){
 //页码不能超过范围
 if(mcurrentpagenumber <= 0){
  toast.maketext(this, "这已经是第一页", toast.length_short).show();
  return;
 }
 mcurrentpagenumber --;
 initdata();
 }
 /*
 * 下一页
 */
 public void nextpage(view v){
 //页码不能超过范围
 if(mcurrentpagenumber >= totalpage - 1){
  toast.maketext(this, "这已经是最后一页", toast.length_short).show();
  return;
 }
 mcurrentpagenumber ++;
 initdata();
 }
 /*
 * 跳转页面
 */
 public void jump(view v){
 string jump_page = et_page_number.gettext().tostring();
 if(textutils.isempty(jump_page)){
  toast.maketext(this, "请输入正确的页码", toast.length_short).show();
 }else{
  //读取的字符串转换成int
  int pagenumber = integer.parseint(jump_page);
  if(pagenumber >=0 && pagenumber<= totalpage - 1){
  mcurrentpagenumber = pagenumber;
  initdata();
  }else{
  toast.maketext(this, "请输入正确的页码", toast.length_short).show();
  }
 }
 }
}

以上所述是小编给大家介绍的android分页中显示出下面翻页的导航栏的布局实例代码,希望对大家有所帮助