Android分页中显示出下面翻页的导航栏的布局实例代码

2024-02-25 14:53:03 44
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
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
packagecom.ldw.safe.Activity;
importjava.util.List;
importandroid.app.Activity;
importandroid.content.Context;
importandroid.os.Bundle;
importandroid.os.Handler;
importandroid.os.Message;
importandroid.text.TextUtils;
importandroid.view.View;
importandroid.view.View.OnClickListener;
importandroid.view.ViewGroup;
importandroid.widget.Adapter;
importandroid.widget.EditText;
importandroid.widget.ImageView;
importandroid.widget.LinearLayout;
importandroid.widget.ListView;
importandroid.widget.TextView;
importandroid.widget.Toast;
importcom.ldw.safe.R;
importcom.ldw.safe.adapter.MyBaseAdapter;
importcom.ldw.safe.bean.BlackNumberInfo;
importcom.ldw.safe.db.dao.BlackNumberDao;
publicclassCallSafeActivityextendsActivity{
privateListViewlist_view_callsafe;
privateListblackNumberInfos;
privateLinearLayoutll_pb;
privateBlackNumberDaodao;
privateTextViewtv_page_number;
privateintpageNumber;
privateintmPageSize=20;//每一页显示多少数据
privateintmCurrentPageNumber=0;//当前页面
privateinttotalPage;
privateCallSafeAdapteradapter;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_call_safe);
initUi();
initData();
}
//初始化数据
privateHandlerhandler=newHandler(){
@Override
publicvoidhandleMessage(Messagemsg){
//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=newCallSafeAdapter(blackNumberInfos,CallSafeActivity.this);
//配置适配器
list_view_callsafe.setAdapter(adapter);
}
};
privateEditTextet_page_number;
//初始化数据
privatevoidinitData(){
//防止阻塞主线程，在子线程中初始化数据（后期数据会很多）
newThread(){
@Override
publicvoidrun(){
dao=newBlackNumberDao(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
privatevoidinitUi(){
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
privateclassCallSafeAdapterextendsMyBaseAdapter{
privateCallSafeAdapter(Listlists,ContextmContext){
super(lists,mContext);
}
@Override
publicViewgetView(intposition,ViewconvertView,ViewGroupparent){
//谷歌推出的优化方案
ViewHolderholder;
if(convertView==null){
convertView=View.inflate(CallSafeActivity.this,R.layout.item_call_safe,null);
holder=newViewHolder();
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());
Stringmode=lists.get(position).getMode();
if(mode.equals("1")){
holder.tv_mode.setText("电话和短信拦截");
}elseif(mode.equals("2")){
holder.tv_mode.setText("电话拦截");
}elseif(mode.equals("3")){
holder.tv_mode.setText("短信拦截");
}
finalBlackNumberInfoinfo=lists.get(position);
//监听删除数据按钮，删除数据
holder.iv_delete.setOnClickListener(newOnClickListener(){
@Override
publicvoidonClick(Viewv){
Stringnumber=info.getNumber();
booleanresult=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();
}
}
});
returnconvertView;
/*
//谷歌推出的优化方案
ViewHolderholder;
if(convertView==null){
convertView=View.inflate(CallSafeActivity.this,R.layout.item_call_safe,null);
holder=newViewHolder();
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());
Stringmode=blackNumberInfos.get(position).getMode();
if(mode.equals("1")){
holder.tv_mode.setText("电话和短信拦截");
}elseif(mode.equals("2")){
holder.tv_mode.setText("电话拦截");
}elseif(mode.equals("3")){
holder.tv_mode.setText("短信拦截");
}
returnconvertView;
*/
/*初步的优化
convertView=View.inflate(CallSafeActivity.this,R.layout.item_call_safe,null);
TextViewtv_number=(TextView)convertView.findViewById(R.id.tv_number);
TextViewtv_mode=(TextView)convertView.findViewById(R.id.tv_mode);
tv_number.setText(blackNumberInfos.get(position).getNumber());
Stringmode=blackNumberInfos.get(position).getMode();
if(mode.equals("1")){
tv_mode.setText("电话和短信拦截");
}elseif(mode.equals("2")){
tv_mode.setText("电话拦截");
}elseif(mode.equals("3")){
tv_mode.setText("短信拦截");
}
returnconvertView;
*/
/*传统的方式
Viewview=View.inflate(CallSafeActivity.this,R.layout.item_call_safe,null);
TextViewtv_number=(TextView)view.findViewById(R.id.tv_number);
TextViewtv_mode=(TextView)view.findViewById(R.id.tv_mode);
tv_number.setText(blackNumberInfos.get(position).getNumber());
Stringmode=blackNumberInfos.get(position).getMode();
if(mode.equals("1")){
tv_mode.setText("电话和短信拦截");
}elseif(mode.equals("2")){
tv_mode.setText("电话拦截");
}elseif(mode.equals("3")){
tv_mode.setText("短信拦截");
}
returnview;
*/
}
}
staticclassViewHolder{
TextViewtv_number;
TextViewtv_mode;
ImageViewiv_delete;
}
/*
*上一页
*/
publicvoidprePage(Viewv){
//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
*/
publicvoidnextPage(Viewv){
//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
*/
publicvoidjump(Viewv){
Stringjump_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
intpageNumber=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，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！
Android分页中显示出下面翻页的导航栏的布局实例代码

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