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;
}
}
static class ViewHolder{
TextView tv_number;
TextView tv_mode;
ImageView iv_delete;
}
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();
}
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();
}
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，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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