android分页查询功能工具类的实现
2012-06-04 14:56
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在一个项目中，常常需要频繁的分页，所以有必要实现一个封装的类来统一管理实现。
首先看下效果图：
从上图我们可以看出，这里是将listview中的数据通过底下的分页工具实现分页显示。那我们接下来先贴出代码：
1、实现布局,这里有两个布局文件，第一个主布局文件main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/whole_region"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<HorizontalScrollView
android:id="@+id/HorizontalScrollView01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/pagebtn"
android:layout_alignParentTop="true" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/list_view_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
</LinearLayout>
<ListView
android:id="@+id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fadeScrollbars="false" >
</ListView>
</LinearLayout>
</HorizontalScrollView>
<LinearLayout
android:id="@id/pagebtn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical" >
<include layout="@layout/pagebutton" />
</LinearLayout>
</RelativeLayout>
第二个布局文件pagebutton.xml.这个文件嵌套在第一个主文件中。
<pre class="html" name="code"><?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<TableLayout android:id="@+id/TableLayout1"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:stretchColumns="0,1,2,3,4,5,6,7" android:shrinkColumns="0,1,2,3,4,5,6,7"
android:paddingTop="5dip" android:paddingLeft="5dip" android:paddingRight="5dip">
<TableRow>
<TextView android:text="共" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:id="@+id/total_page_num" android:minWidth="30dp"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textColor="#C71585"
android:textSize="18sp" />
<TextView android:text="页" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:id="@+id/total_record_num"
android:minWidth="60dp" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textColor="#C71585" android:textSize="18sp" />
<TextView android:text="条，" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:text="每页" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:id="@+id/record_num_each_page"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#C71585"
android:textSize="18sp" />
<TextView android:text="条" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
</TableRow>
</TableLayout>
<TableLayout android:id="@+id/TableLayout1"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:stretchColumns="0,1,2,3,4,5,6,7" android:shrinkColumns="0,1,2,3,4,5,6,7,8" android:paddingTop="5dip">
<TableRow>
<Button android:id="@+id/first_page" android:text="|<"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<Button android:id="@+id/page_up" android:text=" < "
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<Button android:id="@+id/page_down" android:text=" > "
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<Button android:id="@+id/last_page" android:text=">|"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<TextView android:text="第" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<EditText android:id="@+id/current_page" android:maxWidth="40dip"
android:singleLine="true" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textColor="#C71585" android:textSize="18sp" />
<TextView android:text="页" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<Button android:id="@+id/to_page" android:text="转到"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
</TableRow>
</TableLayout>
</merge>
第二步：新建一个activity,用来显示界面
public class BuilderList1 extends QueryContextActivity {
private PagedQueryResultHelper pagedQueryResultHelper;
private Map<String, Object> params;
private ListView list;
private List<Integer> columnWidths;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.mynotifylist);
setOnClickListener();
columnWidths = new ArrayList<Integer>();
int weight = this.getWindowManager().getDefaultDisplay().getWidth();
columnWidths.add(weight);
pagedQueryResultHelper = new PagedQueryResultHelper(this);
pagedQueryResultHelper.setTitleCellWidth(columnWidths);
//这个方法是用来查询数据并显示在LISTVIEW中的，我们这次的重点不在这里，我只列出不详讲，有兴趣的朋友可以自己研究下listview query();
}
<p> protected void query() {
params = new HashMap<String, Object>();
params.put("userName", UserInfo.getUserName());</p><p> pagedQueryResultHelper.setQueryParams("getBuilderList", params,
"startNum", "endNum", "MyNotifyList", R.array.build_list_name, R.array.build_list);
if (pagedQueryResultHelper.initialQuery() == null) {
new AlertDialog.Builder(this)
.setTitle(R.string.message_title)
.setMessage("没有查询到相关信息，请返回！")
.setPositiveButton(R.string.OK_text, null)
.setPositiveButton(R.string.OK_text,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {</p><p> BuilderList1.this.finish();</p><p> } }).show();
};</p><p> list = (ListView) findViewById(R.id.list);</p><p> list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int index, long arg3) {</p><p> List<Map<String, Object>> data = pagedQueryResultHelper .getWholeResult();
Intent intent = new Intent(BuilderList1.this,FloorInfo.class);
intent.putExtra("value", (Serializable) data.get(index));
intent.putExtra("buildid", data.get(index).get("BUILDID").toString());
startActivity(intent); }});
}</p><p> @Override
public void onClick(View arg0) {
switch (arg0.getId()) {
case R.id.first_page:
pagedQueryResultHelper.firstPage();
break;
case R.id.page_down:
pagedQueryResultHelper.pageDown();
break;
case R.id.page_up:
pagedQueryResultHelper.pageUp();
break;
case R.id.last_page:
pagedQueryResultHelper.lastPage();
break;
case R.id.to_page:
pagedQueryResultHelper.toPage();
break;
}
}</p><p> @Override
protected void clear() {
}</p><p> @Override
protected void setOnClickListener() {
}</p><p>}</p><p> </p>第三步：实现这个工具类，这个类代码有些多
<pre class="java" name="code">package org.Base.Utils;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import org.Base.Activities.QueryContextActivity;
import org.Base.Container.DataTableAdapter;
import org.Base.Container.myListViewTitle;
import org.Base.Webservice.WSObjectListUtil;
import org.Base.Webservice.WSObjectMapUtil;
import org.Base.Webservice.WSObjectUtil;
import org.Base.Webservice.WSUtil;
import org.Base.Webservice.WebServiceConfig;
import org.DigitalCM.R;
import org.ksoap2.serialization.SoapObject;
import android.app.AlertDialog;
import android.util.Log;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
public class PagedQueryResultHelper {
private final static int initialFromRecordNum = 1;//每页从第1条开始
private final static int initialToRecordNum = 20;//每页可以显示20条
public PagedQueryResultHelper(QueryContextActivity contextActivity) {//构造函数用来初始化，主要是用来接收传过来的activity做为上下文对象
this.contextActivity = contextActivity;
findViews();//调用此方法找到传过来的activity的控件对象
setOnClickListener();//给控件设置监听
if (currentPageText != null) {//如果所有页面只有一页，那就只显示一页
setCurrentPage(1);
}
}
public List<List<String>> initialQuery() {
setRecordNumEachPage(initialToRecordNum - initialFromRecordNum + 1);//设置每页的记录条数
return query(initialFromRecordNum, initialToRecordNum);
}
public List<List<String>> initialQuery01() {
return query(methodName, params);
}
private void setCurrentPage(int currentPage) {//设置当前页
this.currentPage = currentPage;
currentPageText.setText(String.valueOf(currentPage));
}
public void setMarkable(boolean bMarkable) {//这个是用来标记记录的
this.bMarkable = bMarkable;
}
public void setRecordNumEachPage(int recordNumEachPage) {);//设置每页的记录条数
this.recordNumEachPage = recordNumEachPage;
recordNumEachPageText.setText(String.valueOf(recordNumEachPage));
}
public void setTotalRecord(int totalRecord) {//设置总记录数
this.totalRecord = totalRecord;
totalRecordNumText.setText(String.valueOf(totalRecord));
getTotalPageNumText();
}
private QueryContextActivity contextActivity;
private TextView totalPageNumText;
private TextView totalRecordNumText;
private TextView recordNumEachPageText;
private Button firstPage;
private Button pageDown;
private Button pageUp;
private Button lastPage;
private EditText currentPageText;
private Button toPage;
private int totalPage;
private int totalRecord;
private int recordNumEachPage;
private int currentPage;
private String fromRecordNumField;
private String toRecordNumField;
private String methodName;
private Map<String, Object> params;
private String contentTableName;
// private String countTableName;
private int headerNameId;
private int headerId;
private List<Integer> columnWidths = null;
private boolean bSetTitleValue = false;
private List<Map<String, Object>> wholeresult = null;
private List<List<String>> rows = null;
private boolean bMarkable = false;
private DataTableAdapter dataTableAdapter;
public void setQueryParams(String methodName, Map<String, Object> params,
String fromRecordNumField, String toRecordNumField,
String contentTableName, int headerNameId, int headerId) {
this.methodName = methodName;
this.params = params;
this.fromRecordNumField = fromRecordNumField;
this.toRecordNumField = toRecordNumField;
this.contentTableName = contentTableName;
// this.countTableName = countTableName;
this.headerNameId = headerNameId;
this.headerId = headerId;
}
public void setQueryParams(String methodName, Map<String, Object> params,
String fromRecordNumField, String toRecordNumField,
String contentTableName) {
this.methodName = methodName;
this.params = params;
this.fromRecordNumField = fromRecordNumField;
this.toRecordNumField = toRecordNumField;
this.contentTableName = contentTableName;
// this.countTableName = countTableName;
}
public void setQueryParams(String methodName, Map<String, Object> params,
String contentTableName, int headerNameId, int headerId) {
this.methodName = methodName;
this.params = params;
this.contentTableName = contentTableName;
this.headerNameId = headerNameId;
this.headerId = headerId;
}
public void setTitleCellWidth(List<Integer> columnWidths) {
this.columnWidths = columnWidths;
}
/*
* public int getCurrentPage(){ return currentPage; }
*/
private void findViews() {
totalPageNumText = (TextView) contextActivity
.findViewById(R.id.total_page_num);
totalRecordNumText = (TextView) contextActivity
.findViewById(R.id.total_record_num);
recordNumEachPageText = (TextView) contextActivity
.findViewById(R.id.record_num_each_page);
firstPage = (Button) contextActivity.findViewById(R.id.first_page);
pageDown = (Button) contextActivity.findViewById(R.id.page_down);
pageUp = (Button) contextActivity.findViewById(R.id.page_up);
lastPage = (Button) contextActivity.findViewById(R.id.last_page);
currentPageText = (EditText) contextActivity
.findViewById(R.id.current_page);
toPage = (Button) contextActivity.findViewById(R.id.to_page);
}
private void setOnClickListener() {
if (firstPage != null) {
firstPage.setOnClickListener(contextActivity);
}
if (pageDown != null) {
pageDown.setOnClickListener(contextActivity);
}
if (pageUp != null) {
pageUp.setOnClickListener(contextActivity);
}
if (lastPage != null) {
lastPage.setOnClickListener(contextActivity);
}
if (toPage != null) {
toPage.setOnClickListener(contextActivity);
}
}
private void getRecordNumEachPageText() {
try {
recordNumEachPage = Integer.parseInt(recordNumEachPageText
.getText().toString());
} catch (NumberFormatException e) {
Log.e("NumberFormatException", e.getMessage());
}
}
private boolean outOfEachPageRange() {
recordNumEachPage = Integer.parseInt(recordNumEachPageText.getText()
.toString());
if (recordNumEachPage > 20 || recordNumEachPage < 1) {
return true;
}
return false;
}
private void getTotalPageNumText() {
getRecordNumEachPageText();
if (recordNumEachPage == 0)
return;
if (totalRecord == 0) {
totalPage = 0;
totalPageNumText.setText(String.valueOf(0));
return;
}
if (totalRecord % recordNumEachPage == 0) {//java中分页常用到的计算公式
totalPage = totalRecord / recordNumEachPage;
} else {
totalPage = totalRecord / recordNumEachPage + 1;
}
totalPageNumText.setText(String.valueOf(totalPage));
}
public void pageDown() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
if (currentPage != totalPage) {
setCurrentPage(++currentPage);
getTotalPageNumText();
query(recordNumEachPage * (currentPage - 1) + 1, recordNumEachPage
* currentPage);
}
}
public void pageUp() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
if (currentPage != 1 && currentPage != 0) {
setCurrentPage(--currentPage);
getTotalPageNumText();
query(recordNumEachPage * (currentPage - 1) + 1, recordNumEachPage
* currentPage);
}
}
public void firstPage() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
getTotalPageNumText();
if (totalPage > 1) {
setCurrentPage(1);
query(1, recordNumEachPage);
}
}
public void lastPage() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
getTotalPageNumText();
if (totalPage != 1 && totalPage != 0) {
setCurrentPage(totalPage);
query(recordNumEachPage * (totalPage - 1) + 1, totalRecord);
}
}
public void toPage() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
try {
currentPage = Integer
.parseInt(currentPageText.getText().toString());
} catch (NumberFormatException e) {
Log.e("NumberFormatException", e.getMessage());
return;
}
getTotalPageNumText();
query(recordNumEachPage * (currentPage - 1) + 1, recordNumEachPage
* currentPage);
currentPageText.setText(String.valueOf(currentPage));
}
public List<List<String>> query(int fromRecordNum, int toRecordNum) {
return query(methodName, params, fromRecordNumField, toRecordNumField,
fromRecordNum, toRecordNum);
}
private List<List<String>> query(String methodName,
Map<String, Object> params, String fromRecordNumField,
String toRecordNumField, int fromRecordNum, int toRecordNum) {
params.put(fromRecordNumField, fromRecordNum);
params.put(toRecordNumField, toRecordNum);
return query(methodName, params);
}
public List<Map<String, Object>> getWholeResult() {
return wholeresult;
}
public List<Map<String, Object>> getResult() {
return wholeresult;
}
public List<Boolean> getCheckBoxState() {
return dataTableAdapter.getCheckBoxState();
}
public List<List<String>> query(String methodName,
Map<String, Object> params) {//此方法要重点注意，因为这里是根据webservice查询到的数据，所以要传递来方法和参数
SoapObject result = null;
if (methodName == null) {
if (bSetTitleValue == false) {//下面是实现listview的标题显示
bSetTitleValue = true;
myListViewTitle listViewTitle = new myListViewTitle(
contextActivity);
if (this.columnWidths != null) {
listViewTitle.setTitleCellWidth(this.columnWidths);
}
List<String> headerList = Arrays.asList(contextActivity
.getResources().getStringArray(headerId));
listViewTitle.setTitleCellValue(headerList);
}
return null;
}
try {
result = WSUtil.getSoapObjectByCallingWS(//这里是android调用webservice的典型方法
WebServiceConfig.NAMESPACE, methodName, params,
WebServiceConfig.wsdl);
} catch (Exception e) {
new AlertDialog.Builder(contextActivity)
.setTitle(R.string.message_title)
.setMessage(R.string.connection_error)
.setPositiveButton(R.string.OK_text, null).show();
Log.e("Exception", e.getMessage());
}
if (result == null) {//如果从webservice得到的结果为null，那我们就找到listview，并赋空值，将分页的显示值设为0
ListView list = (ListView) contextActivity.findViewById(R.id.list);
list.setAdapter(null);
setTotalRecord(0);
this.setCurrentPage(0);
return null;
}
SoapObject dataSet = WSObjectUtil.getDataSetObject(result);//如果从webservice得到的结果不为空，则转化成dataSet
if (dataSet == null) {//如果dataSet为空，则显示对话框，没有查询到相关数据
new AlertDialog.Builder(contextActivity)
.setTitle(R.string.message_title).setMessage("没有查询到相关数据！")
.setPositiveButton(R.string.OK_text, null);
return null;
}
// 否则，就取得列名，并将取得的dataset转化成list型的数据，最后将数据显示在listview,并通过rows返回数据
List<String> columnNameList = Arrays.asList(contextActivity
.getResources().getStringArray(headerNameId));
WSObjectListUtil wsObjectListUtil = new WSObjectListUtil();
if (contentTableName != null) {
rows = wsObjectListUtil.getTableValueList(dataSet,
contentTableName, columnNameList);
} else {
rows = wsObjectListUtil.getTableValueList(dataSet, columnNameList);
}
if (wholeresult != null) {
wholeresult.clear();
}
WSObjectMapUtil wsObjectMapUtil = new WSObjectMapUtil();
if (contentTableName != null) {
wholeresult = wsObjectMapUtil.getRowMapList(contentTableName,
dataSet);
} else {
wholeresult = WSObjectMapUtil.getRowMapList(dataSet);
}
SoapObject countTable = (SoapObject) dataSet.getProperty(dataSet
.getPropertyCount() - 1);
try {
totalRecord = Integer
.parseInt(countTable.getProperty(0).toString());
} catch (Exception e) {
Log.e("Exception", e.getMessage());
}
if (totalRecord != 0 && this.totalRecord == 0
&& currentPageText != null) {
this.setCurrentPage(1);
}
setTotalRecord(totalRecord);
if (bSetTitleValue == false) {
bSetTitleValue = true;
myListViewTitle listViewTitle = new myListViewTitle(contextActivity);
if (this.columnWidths != null) {
listViewTitle.setTitleCellWidth(this.columnWidths);
}
List<String> headerList = Arrays.asList(contextActivity
.getResources().getStringArray(headerId));
listViewTitle.setTitleCellValue(headerList);
}
ListView list = (ListView) contextActivity.findViewById(R.id.list);
dataTableAdapter = new DataTableAdapter(contextActivity, rows);
if (bMarkable) {
dataTableAdapter.setMarkable(true);
}
if (this.columnWidths != null) {
dataTableAdapter.setColumnWidths(this.columnWidths);
}
list.setAdapter(dataTableAdapter);//注意，关键点：将数据显示在listview
return rows;//返回数据
}
}
首先看下效果图：
从上图我们可以看出，这里是将listview中的数据通过底下的分页工具实现分页显示。那我们接下来先贴出代码：
1、实现布局,这里有两个布局文件，第一个主布局文件main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/whole_region"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<HorizontalScrollView
android:id="@+id/HorizontalScrollView01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/pagebtn"
android:layout_alignParentTop="true" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/list_view_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
</LinearLayout>
<ListView
android:id="@+id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fadeScrollbars="false" >
</ListView>
</LinearLayout>
</HorizontalScrollView>
<LinearLayout
android:id="@id/pagebtn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical" >
<include layout="@layout/pagebutton" />
</LinearLayout>
</RelativeLayout>
第二个布局文件pagebutton.xml.这个文件嵌套在第一个主文件中。
<pre class="html" name="code"><?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<TableLayout android:id="@+id/TableLayout1"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:stretchColumns="0,1,2,3,4,5,6,7" android:shrinkColumns="0,1,2,3,4,5,6,7"
android:paddingTop="5dip" android:paddingLeft="5dip" android:paddingRight="5dip">
<TableRow>
<TextView android:text="共" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:id="@+id/total_page_num" android:minWidth="30dp"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textColor="#C71585"
android:textSize="18sp" />
<TextView android:text="页" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:id="@+id/total_record_num"
android:minWidth="60dp" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textColor="#C71585" android:textSize="18sp" />
<TextView android:text="条，" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:text="每页" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<TextView android:id="@+id/record_num_each_page"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#C71585"
android:textSize="18sp" />
<TextView android:text="条" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
</TableRow>
</TableLayout>
<TableLayout android:id="@+id/TableLayout1"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:stretchColumns="0,1,2,3,4,5,6,7" android:shrinkColumns="0,1,2,3,4,5,6,7,8" android:paddingTop="5dip">
<TableRow>
<Button android:id="@+id/first_page" android:text="|<"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<Button android:id="@+id/page_up" android:text=" < "
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<Button android:id="@+id/page_down" android:text=" > "
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<Button android:id="@+id/last_page" android:text=">|"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
<TextView android:text="第" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<EditText android:id="@+id/current_page" android:maxWidth="40dip"
android:singleLine="true" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textColor="#C71585" android:textSize="18sp" />
<TextView android:text="页" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="18sp" />
<Button android:id="@+id/to_page" android:text="转到"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="18sp" />
</TableRow>
</TableLayout>
</merge>
第二步：新建一个activity,用来显示界面
public class BuilderList1 extends QueryContextActivity {
private PagedQueryResultHelper pagedQueryResultHelper;
private Map<String, Object> params;
private ListView list;
private List<Integer> columnWidths;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.mynotifylist);
setOnClickListener();
columnWidths = new ArrayList<Integer>();
int weight = this.getWindowManager().getDefaultDisplay().getWidth();
columnWidths.add(weight);
pagedQueryResultHelper = new PagedQueryResultHelper(this);
pagedQueryResultHelper.setTitleCellWidth(columnWidths);
//这个方法是用来查询数据并显示在LISTVIEW中的，我们这次的重点不在这里，我只列出不详讲，有兴趣的朋友可以自己研究下listview query();
}
<p> protected void query() {
params = new HashMap<String, Object>();
params.put("userName", UserInfo.getUserName());</p><p> pagedQueryResultHelper.setQueryParams("getBuilderList", params,
"startNum", "endNum", "MyNotifyList", R.array.build_list_name, R.array.build_list);
if (pagedQueryResultHelper.initialQuery() == null) {
new AlertDialog.Builder(this)
.setTitle(R.string.message_title)
.setMessage("没有查询到相关信息，请返回！")
.setPositiveButton(R.string.OK_text, null)
.setPositiveButton(R.string.OK_text,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {</p><p> BuilderList1.this.finish();</p><p> } }).show();
};</p><p> list = (ListView) findViewById(R.id.list);</p><p> list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int index, long arg3) {</p><p> List<Map<String, Object>> data = pagedQueryResultHelper .getWholeResult();
Intent intent = new Intent(BuilderList1.this,FloorInfo.class);
intent.putExtra("value", (Serializable) data.get(index));
intent.putExtra("buildid", data.get(index).get("BUILDID").toString());
startActivity(intent); }});
}</p><p> @Override
public void onClick(View arg0) {
switch (arg0.getId()) {
case R.id.first_page:
pagedQueryResultHelper.firstPage();
break;
case R.id.page_down:
pagedQueryResultHelper.pageDown();
break;
case R.id.page_up:
pagedQueryResultHelper.pageUp();
break;
case R.id.last_page:
pagedQueryResultHelper.lastPage();
break;
case R.id.to_page:
pagedQueryResultHelper.toPage();
break;
}
}</p><p> @Override
protected void clear() {
}</p><p> @Override
protected void setOnClickListener() {
}</p><p>}</p><p> </p>第三步：实现这个工具类，这个类代码有些多
<pre class="java" name="code">package org.Base.Utils;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import org.Base.Activities.QueryContextActivity;
import org.Base.Container.DataTableAdapter;
import org.Base.Container.myListViewTitle;
import org.Base.Webservice.WSObjectListUtil;
import org.Base.Webservice.WSObjectMapUtil;
import org.Base.Webservice.WSObjectUtil;
import org.Base.Webservice.WSUtil;
import org.Base.Webservice.WebServiceConfig;
import org.DigitalCM.R;
import org.ksoap2.serialization.SoapObject;
import android.app.AlertDialog;
import android.util.Log;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
public class PagedQueryResultHelper {
private final static int initialFromRecordNum = 1;//每页从第1条开始
private final static int initialToRecordNum = 20;//每页可以显示20条
public PagedQueryResultHelper(QueryContextActivity contextActivity) {//构造函数用来初始化，主要是用来接收传过来的activity做为上下文对象
this.contextActivity = contextActivity;
findViews();//调用此方法找到传过来的activity的控件对象
setOnClickListener();//给控件设置监听
if (currentPageText != null) {//如果所有页面只有一页，那就只显示一页
setCurrentPage(1);
}
}
public List<List<String>> initialQuery() {
setRecordNumEachPage(initialToRecordNum - initialFromRecordNum + 1);//设置每页的记录条数
return query(initialFromRecordNum, initialToRecordNum);
}
public List<List<String>> initialQuery01() {
return query(methodName, params);
}
private void setCurrentPage(int currentPage) {//设置当前页
this.currentPage = currentPage;
currentPageText.setText(String.valueOf(currentPage));
}
public void setMarkable(boolean bMarkable) {//这个是用来标记记录的
this.bMarkable = bMarkable;
}
public void setRecordNumEachPage(int recordNumEachPage) {);//设置每页的记录条数
this.recordNumEachPage = recordNumEachPage;
recordNumEachPageText.setText(String.valueOf(recordNumEachPage));
}
public void setTotalRecord(int totalRecord) {//设置总记录数
this.totalRecord = totalRecord;
totalRecordNumText.setText(String.valueOf(totalRecord));
getTotalPageNumText();
}
private QueryContextActivity contextActivity;
private TextView totalPageNumText;
private TextView totalRecordNumText;
private TextView recordNumEachPageText;
private Button firstPage;
private Button pageDown;
private Button pageUp;
private Button lastPage;
private EditText currentPageText;
private Button toPage;
private int totalPage;
private int totalRecord;
private int recordNumEachPage;
private int currentPage;
private String fromRecordNumField;
private String toRecordNumField;
private String methodName;
private Map<String, Object> params;
private String contentTableName;
// private String countTableName;
private int headerNameId;
private int headerId;
private List<Integer> columnWidths = null;
private boolean bSetTitleValue = false;
private List<Map<String, Object>> wholeresult = null;
private List<List<String>> rows = null;
private boolean bMarkable = false;
private DataTableAdapter dataTableAdapter;
public void setQueryParams(String methodName, Map<String, Object> params,
String fromRecordNumField, String toRecordNumField,
String contentTableName, int headerNameId, int headerId) {
this.methodName = methodName;
this.params = params;
this.fromRecordNumField = fromRecordNumField;
this.toRecordNumField = toRecordNumField;
this.contentTableName = contentTableName;
// this.countTableName = countTableName;
this.headerNameId = headerNameId;
this.headerId = headerId;
}
public void setQueryParams(String methodName, Map<String, Object> params,
String fromRecordNumField, String toRecordNumField,
String contentTableName) {
this.methodName = methodName;
this.params = params;
this.fromRecordNumField = fromRecordNumField;
this.toRecordNumField = toRecordNumField;
this.contentTableName = contentTableName;
// this.countTableName = countTableName;
}
public void setQueryParams(String methodName, Map<String, Object> params,
String contentTableName, int headerNameId, int headerId) {
this.methodName = methodName;
this.params = params;
this.contentTableName = contentTableName;
this.headerNameId = headerNameId;
this.headerId = headerId;
}
public void setTitleCellWidth(List<Integer> columnWidths) {
this.columnWidths = columnWidths;
}
/*
* public int getCurrentPage(){ return currentPage; }
*/
private void findViews() {
totalPageNumText = (TextView) contextActivity
.findViewById(R.id.total_page_num);
totalRecordNumText = (TextView) contextActivity
.findViewById(R.id.total_record_num);
recordNumEachPageText = (TextView) contextActivity
.findViewById(R.id.record_num_each_page);
firstPage = (Button) contextActivity.findViewById(R.id.first_page);
pageDown = (Button) contextActivity.findViewById(R.id.page_down);
pageUp = (Button) contextActivity.findViewById(R.id.page_up);
lastPage = (Button) contextActivity.findViewById(R.id.last_page);
currentPageText = (EditText) contextActivity
.findViewById(R.id.current_page);
toPage = (Button) contextActivity.findViewById(R.id.to_page);
}
private void setOnClickListener() {
if (firstPage != null) {
firstPage.setOnClickListener(contextActivity);
}
if (pageDown != null) {
pageDown.setOnClickListener(contextActivity);
}
if (pageUp != null) {
pageUp.setOnClickListener(contextActivity);
}
if (lastPage != null) {
lastPage.setOnClickListener(contextActivity);
}
if (toPage != null) {
toPage.setOnClickListener(contextActivity);
}
}
private void getRecordNumEachPageText() {
try {
recordNumEachPage = Integer.parseInt(recordNumEachPageText
.getText().toString());
} catch (NumberFormatException e) {
Log.e("NumberFormatException", e.getMessage());
}
}
private boolean outOfEachPageRange() {
recordNumEachPage = Integer.parseInt(recordNumEachPageText.getText()
.toString());
if (recordNumEachPage > 20 || recordNumEachPage < 1) {
return true;
}
return false;
}
private void getTotalPageNumText() {
getRecordNumEachPageText();
if (recordNumEachPage == 0)
return;
if (totalRecord == 0) {
totalPage = 0;
totalPageNumText.setText(String.valueOf(0));
return;
}
if (totalRecord % recordNumEachPage == 0) {//java中分页常用到的计算公式
totalPage = totalRecord / recordNumEachPage;
} else {
totalPage = totalRecord / recordNumEachPage + 1;
}
totalPageNumText.setText(String.valueOf(totalPage));
}
public void pageDown() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
if (currentPage != totalPage) {
setCurrentPage(++currentPage);
getTotalPageNumText();
query(recordNumEachPage * (currentPage - 1) + 1, recordNumEachPage
* currentPage);
}
}
public void pageUp() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
if (currentPage != 1 && currentPage != 0) {
setCurrentPage(--currentPage);
getTotalPageNumText();
query(recordNumEachPage * (currentPage - 1) + 1, recordNumEachPage
* currentPage);
}
}
public void firstPage() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
getTotalPageNumText();
if (totalPage > 1) {
setCurrentPage(1);
query(1, recordNumEachPage);
}
}
public void lastPage() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
getTotalPageNumText();
if (totalPage != 1 && totalPage != 0) {
setCurrentPage(totalPage);
query(recordNumEachPage * (totalPage - 1) + 1, totalRecord);
}
}
public void toPage() {
if (outOfEachPageRange()) {
AlertDialog.Builder dialog = new AlertDialog.Builder(
contextActivity);
dialog.setTitle("提示：").setMessage("每页显示条数在1~20之间！")
.setPositiveButton("确认", null).show();
return;
}
try {
currentPage = Integer
.parseInt(currentPageText.getText().toString());
} catch (NumberFormatException e) {
Log.e("NumberFormatException", e.getMessage());
return;
}
getTotalPageNumText();
query(recordNumEachPage * (currentPage - 1) + 1, recordNumEachPage
* currentPage);
currentPageText.setText(String.valueOf(currentPage));
}
public List<List<String>> query(int fromRecordNum, int toRecordNum) {
return query(methodName, params, fromRecordNumField, toRecordNumField,
fromRecordNum, toRecordNum);
}
private List<List<String>> query(String methodName,
Map<String, Object> params, String fromRecordNumField,
String toRecordNumField, int fromRecordNum, int toRecordNum) {
params.put(fromRecordNumField, fromRecordNum);
params.put(toRecordNumField, toRecordNum);
return query(methodName, params);
}
public List<Map<String, Object>> getWholeResult() {
return wholeresult;
}
public List<Map<String, Object>> getResult() {
return wholeresult;
}
public List<Boolean> getCheckBoxState() {
return dataTableAdapter.getCheckBoxState();
}
public List<List<String>> query(String methodName,
Map<String, Object> params) {//此方法要重点注意，因为这里是根据webservice查询到的数据，所以要传递来方法和参数
SoapObject result = null;
if (methodName == null) {
if (bSetTitleValue == false) {//下面是实现listview的标题显示
bSetTitleValue = true;
myListViewTitle listViewTitle = new myListViewTitle(
contextActivity);
if (this.columnWidths != null) {
listViewTitle.setTitleCellWidth(this.columnWidths);
}
List<String> headerList = Arrays.asList(contextActivity
.getResources().getStringArray(headerId));
listViewTitle.setTitleCellValue(headerList);
}
return null;
}
try {
result = WSUtil.getSoapObjectByCallingWS(//这里是android调用webservice的典型方法
WebServiceConfig.NAMESPACE, methodName, params,
WebServiceConfig.wsdl);
} catch (Exception e) {
new AlertDialog.Builder(contextActivity)
.setTitle(R.string.message_title)
.setMessage(R.string.connection_error)
.setPositiveButton(R.string.OK_text, null).show();
Log.e("Exception", e.getMessage());
}
if (result == null) {//如果从webservice得到的结果为null，那我们就找到listview，并赋空值，将分页的显示值设为0
ListView list = (ListView) contextActivity.findViewById(R.id.list);
list.setAdapter(null);
setTotalRecord(0);
this.setCurrentPage(0);
return null;
}
SoapObject dataSet = WSObjectUtil.getDataSetObject(result);//如果从webservice得到的结果不为空，则转化成dataSet
if (dataSet == null) {//如果dataSet为空，则显示对话框，没有查询到相关数据
new AlertDialog.Builder(contextActivity)
.setTitle(R.string.message_title).setMessage("没有查询到相关数据！")
.setPositiveButton(R.string.OK_text, null);
return null;
}
// 否则，就取得列名，并将取得的dataset转化成list型的数据，最后将数据显示在listview,并通过rows返回数据
List<String> columnNameList = Arrays.asList(contextActivity
.getResources().getStringArray(headerNameId));
WSObjectListUtil wsObjectListUtil = new WSObjectListUtil();
if (contentTableName != null) {
rows = wsObjectListUtil.getTableValueList(dataSet,
contentTableName, columnNameList);
} else {
rows = wsObjectListUtil.getTableValueList(dataSet, columnNameList);
}
if (wholeresult != null) {
wholeresult.clear();
}
WSObjectMapUtil wsObjectMapUtil = new WSObjectMapUtil();
if (contentTableName != null) {
wholeresult = wsObjectMapUtil.getRowMapList(contentTableName,
dataSet);
} else {
wholeresult = WSObjectMapUtil.getRowMapList(dataSet);
}
SoapObject countTable = (SoapObject) dataSet.getProperty(dataSet
.getPropertyCount() - 1);
try {
totalRecord = Integer
.parseInt(countTable.getProperty(0).toString());
} catch (Exception e) {
Log.e("Exception", e.getMessage());
}
if (totalRecord != 0 && this.totalRecord == 0
&& currentPageText != null) {
this.setCurrentPage(1);
}
setTotalRecord(totalRecord);
if (bSetTitleValue == false) {
bSetTitleValue = true;
myListViewTitle listViewTitle = new myListViewTitle(contextActivity);
if (this.columnWidths != null) {
listViewTitle.setTitleCellWidth(this.columnWidths);
}
List<String> headerList = Arrays.asList(contextActivity
.getResources().getStringArray(headerId));
listViewTitle.setTitleCellValue(headerList);
}
ListView list = (ListView) contextActivity.findViewById(R.id.list);
dataTableAdapter = new DataTableAdapter(contextActivity, rows);
if (bMarkable) {
dataTableAdapter.setMarkable(true);
}
if (this.columnWidths != null) {
dataTableAdapter.setColumnWidths(this.columnWidths);
}
list.setAdapter(dataTableAdapter);//注意，关键点：将数据显示在listview
return rows;//返回数据
}
}
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