大佬教程收集整理的这篇文章主要介绍了Android分页中显示出下面翻页的导航栏的布局实例代码,大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
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://scheR_394_11845@as.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 @R_378_10586@lPage; 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 + "/" + @R_378_10586@lPagE); //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 @R_378_10586@lPage = dao.get@R_378_10586@lnumber() / 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@L_27_22@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,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,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,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 >= @R_378_10586@lPage - 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<= @R_378_10586@lPage - 1){ mCurrentPagenumber = pagenumber; initData(); }else{ Toast.makeText(this,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,如果大家有任何疑问欢迎给我留言,小编会及时回复大家的!
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