** 当我选择列表视图底部的项目时，它们不会被选中， 而只选择列表中的前四项。因为项目不在视野范围内。 怎么做才能看到这些项目？有时候该项目是随机选择的。 请帮我。 谢谢 这是我的代码**
Main activity
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.graphics.Typeface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.TextView;
public class ExceptionAppActivity extends Activity implements OnClickListener, OnItemSelectedListener {
private final int REQUEST_CODE = 20;
String flagg;
String empNm = Constants.Common.STR_BLNK;
String empCode = Constants.Common.STR_BLNK;
SessionManager session = null;
final Context context = this;
static Typeface custom_font = null;
TextView lblExcId, lblExcEmpNm, lblExcFrmDt, lblExcFrmDtVal, lblExcToDtVal, lblExcTyp, lblExcStat, lblExcEmpCmt;
Button btnExcRej, btnExcApp, btnExcSrch, btnExcExit;
CheckBox cb, chkBox;
ListView excSrchListView;
ArrayList<Excp> Results;
CustomListViewAdapter cla;
ExceptionAppDao eCon = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.exception_app_activity);
/* get Resources from Xml file */
btnExcApp = (Button) findViewById(R.id.btnExcApp);
btnExcRej = (Button) findViewById(R.id.btnExcRej);
btnExcSrch = (Button) findViewById(R.id.btnExcSrch);
btnExcExit = (Button) findViewById(R.id.btnExcExit);
lblExcEmpNm = (TextView) findViewById(R.id.lblExcEmpNm);
lblExcFrmDt = (TextView) findViewById(R.id.lblExcFrmDt);
lblExcFrmDtVal = (TextView) findViewById(R.id.lblExcFrmDtVal);
lblExcToDtVal = (TextView) findViewById(R.id.lblExcToDtVal);
lblExcTyp = (TextView) findViewById(R.id.lblExcTyp);
lblExcStat = (TextView) findViewById(R.id.lblExcStat);
lblExcEmpCmt = (TextView) findViewById(R.id.lblExcEmpCmt);
lblExcId = (TextView) findViewById(R.id.lblExcId);
chkBox = (CheckBox) findViewById(R.id.chkBx);
excSrchListView = (ListView) findViewById(R.id.excSrchListView);
// Session Manager
session = new SessionManager(getApplicationContext());
custom_font = Typeface.createFromAsset(getAssets(), "fonts/DejaVuSans.ttf");
// Connection object for Login
eCon = new ExceptionAppDao(context);
// get User Details from Session
HashMap<String, String> hashMap = new HashMap<String, String>();
hashMap = session.getUserDetails();
empNm = hashMap.get(SessionManager.KEY_EMP_NM);
empCode = hashMap.get(SessionManager.KEY_EMP_CODE);
btnExcApp.setTypeface(custom_font);
btnExcRej.setTypeface(custom_font);
btnExcSrch.setTypeface(custom_font);
btnExcExit.setTypeface(custom_font);
new SyncData(empCode).execute();
if (getIntent().getBooleanExtra("EXIT", false)) {
}
// on click any button
addButtonListener();
}
/**
* on click any button
*/
private void addButtonListener() {
btnExcApp.setOnClickListener(this);
btnExcRej.setOnClickListener(this);
btnExcSrch.setOnClickListener(this);
btnExcExit.setOnClickListener(this);
}
public class SyncData extends AsyncTask<String, String, ArrayList<Excp>> {
private final ProgressDialog dialog = new ProgressDialog(context);
List<ExcpMstVo> rtnExcVo = new ArrayList<ExcpMstVo>();
ExcpMstVo rtnExcMstVo = new ExcpMstVo();
ArrayList<Excp> resultLst = new ArrayList<Excp>();
ExceptionService_Service excpServObj = new ExceptionService_Service();
String syncFlg = Constants.Common.STR_BLNK;
private View rootView;
String flag = "";
int x;
boolean success = false;
boolean successSyncFlag = false;
int countApp = 0;
public SyncData(String str) {
syncFlg = str;
}
public SyncData(View rootView) {
// TODO Auto-generated constructor stub
this.rootView = rootView;
}
@Override
protected ArrayList<Excp> doInBackground(String... params) {
ExceptionSearchCriteria vo = new ExceptionSearchCriteria();
ExcpMstVo excpMstVo = new ExcpMstVo();
try {
if (syncFlg.equals(empCode)) {
vo = setAppData(vo);
rtnExcVo = excpServObj.getExceptionPort().searchExceptionApproval(vo);
if (!(rtnExcVo.isEmpty())) {
System.out.println("rtnExcVo" + rtnExcVo.size());
Excp exc = null;
for (ExcpMstVo excMstVo : rtnExcVo) {
exc = new Excp();
exc.setExcId(excMstVo.getExcpId());
exc.setEmpCode(excMstVo.getEmpCode());
exc.setEmpNm(excMstVo.getEmpnm());
exc.setFromDt(excMstVo.getFromDt());
exc.setToDt(excMstVo.getToDt());
exc.setExcType(excMstVo.getExcpType());
exc.setExcStatus(excMstVo.getStatus());
exc.setEmpComments(excMstVo.getEmpComments());
exc.setExcFor(excMstVo.getExcpFor());
exc.setExcReason(excMstVo.getExcpReason());
resultLst.add(exc);
Results = resultLst;
success = true;
}
}
} else if (btnExcApp.equals(rootView.getRootView().findViewById(rootView.getId()))) {
for (x = excSrchListView.getChildCount() - 1; x >= 0; x--) {
cb = (CheckBox) excSrchListView.getChildAt(x).findViewById(R.id.chkBx);
if (cb.isChecked()) {
excpMstVo = setEmpData();
rtnExcMstVo = excpServObj.getExceptionPort().changeExceptionStatus(excpMstVo);
System.out.println("rtnExcMstVo:::::" + rtnExcMstVo.getExcpId());
System.out.println("rtnExcMstVoStatuss:::::" + rtnExcMstVo.getStatus());
countApp++;
success = false;
}
}
/*if (countApp == 0) {
} else*/ if (countApp > 0) {
new SyncData(rootView).execute();
//flagg = false;
}
System.out.println("rtnExcMstVo:::::" + rtnExcMstVo.getExcpId());
System.out.println("rtnExcMstVoStatuss:::::" + rtnExcMstVo.getStatus());
}
// get dump from device
CopyDbFromDevice cd = new CopyDbFromDevice();
cd.copyDbToSdcard(context);
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("success::::" + success);
successSyncFlag = success;
System.out.println("successSyncFlag::::::::" + successSyncFlag);
return resultLst;
}
private ExcpMstVo setEmpData() {
ExcpMstVo excpMstVo = new ExcpMstVo();
excpMstVo.setExcpId(Results.get(x).getExcId());
excpMstVo.setFromDt(Results.get(x).getFromDt());
excpMstVo.setStatus(Constants.Status.STAT_APPRV);
excpMstVo.setMngrComments("");
excpMstVo.setApprovedBy(empCode);
excpMstVo.setLoggedInUser(empCode);
return excpMstVo;
}
private ExceptionSearchCriteria setAppData(ExceptionSearchCriteria vo) {
vo.setApprover(empCode);
vo.setStatus(Constants.Status.PENDING_APPROVAL);
return vo;
}
protected void onPostExecute(ArrayList<Excp> searchResults) {
System.out.println("successSyncFlag1::::::::" + successSyncFlag);
if (successSyncFlag == true) {
System.out.println("entering ON POST IF");
cla = new CustomListViewAdapter(ExceptionAppActivity.this, resultLst);
excSrchListView.setAdapter(cla);
}
else {
System.out.println("ENTERING ONPOST ELSE PART ");
System.out.println("successSyncFlag2:;;;;;; " + successSyncFlag);
System.out.println("success2:::::::::::: " + success);
System.out.println("NEW METHOD STARTED:::::;");
if (countApp == 0) {
System.out.println("ENTERING COUNT APP 0 ");
String flag = "checkItemApp";
dialogBox(flag);
} else {
new SyncData(empCode).execute();
String flag = "excApp";
dialogBox(flag);
System.out.println("NEW METHOD STARTED1:::::::::");
}
}
if (this.dialog.isShowing()) {
this.dialog.dismiss();
}
}
}
@Override
public void onClick(View v) {
int countRej = 0;
int id = v.getId();
Intent intent = null;
if (id == R.id.btnExcApp) {
new SyncData(v).execute();
} else if (id == R.id.btnExcRej) {
int itemPos = 0;
for (int y = excSrchListView.getChildCount() - 1; y >= 0; y--) {
cb = (CheckBox) excSrchListView.getChildAt(y).findViewById(R.id.chkBx);
if (cb.isChecked()) {
itemPos = y;
cla.notifyDataSetChanged();
countRej++;
}
}
// Check if any Exception is selected for Rejection and proceed
// accordingly
if (countRej == 1) {
CustomListViewAdapter cla = (CustomListViewAdapter) excSrchListView.getAdapter();
Object o = cla.getItem(itemPos);
Excp selectedExcp = (Excp) o;
intent = new Intent(getBaseContext(), ExcAppDtlsActivity.class);
intent.putExtra("selectedExcp", selectedExcp);
intent.putExtra("readOnly", false);
startActivityForResult(intent, REQUEST_CODE);
} else if (countRej == 0) {
// show dialogue of Select at least 1
String flag = "checkItemRej";
dialogBox(flag);
} else if (countRej > 1) {
String flag = "checkOnlyOne";
dialogBox(flag);
for (int y = excSrchListView.getChildCount() - 1; y >= 0; y--) {
cb = (CheckBox) excSrchListView.getChildAt(y).findViewById(R.id.chkBx);
if (cb.isChecked()) {
itemPos = y;
cb.setChecked(false);
cla.notifyDataSetChanged();
}
}
}
} else if (id == R.id.btnExcSrch) {
intent = new Intent(this, FurtherSearchActivity.class);
intent.putExtra("readOnly", false);
startActivity(intent);
} else if (id == R.id.btnExcExit) {
finish();
}
}
/**
* create alert dialog
*
* @param flag
*/
private void dialogBox(String flag) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(context);
/*if (flag == "excApp") {
alertDialogBuilder.setTitle("Exception Approved successfully !");
} else*/ if (flag == "checkOnlyOne") {
alertDialogBuilder.setTitle("Please select only one item to reject !");
} else if (flag == "checkItemRej") {
alertDialogBuilder.setTitle("Select Exception to Reject !");
}
/*else if (flag == "checkItemApp") {
alertDialogBuilder.setTitle("Select Exception to Approve !");
} */
else if (flag == "excRej") {
alertDialogBuilder.setTitle("Exception Rejected successfully !");
}
/*else {
alertDialogBuilder.setTitle("Flag - " + flag);
}*/
Dialogbox dbx = new Dialogbox(context);
dbx.createDialogAlert(flag, alertDialogBuilder);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// TODO Auto-generated method stub
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}
@Override
protected void
onActivityResult(int requestCode, int resultCode, Intent data) {
// REQUEST_CODE is defined above
/*
* if (resultCode == RESULT_OK && requestCode == REQUEST_CODE) { //
* Extract name value from result extras flagg =
* data.getExtras().getString("flagg"); if ((flagg.equals("Approve")) ||
* (flagg.equals("Reject"))) { for (int x = 0; x <
* excSrchListView.getChildCount(); x++) { cb = (CheckBox)
* excSrchListView.getChildAt(x).findViewById( R.id.chkBx); if
* (cb.isChecked()) { // If Approval is successful remove from list
* Results.remove(x); cb.setChecked(false); cla.notifyDataSetChanged();
* if (flagg.equals("Approve")) { dialogBox("excApp"); } else {
* dialogBox("excRej"); } } }
*
* } }
*/
}
}
CUSTOM LIST ADAPTER
import java.util.ArrayList;
import java.util.HashMap;
import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TableLayout;
import android.widget.TextView;
import com.eanda.smarttime_mobi.R;
import com.eanda.smarttime_mobi.model.Excp;
public class CustomListViewAdapter extends BaseAdapter {
private static ArrayList<Excp> searchArrayList;
HashMap<Integer, Boolean> checked;
private LayoutInflater mInflater;
Typeface custom_font = null;
public CustomListViewAdapter(Context context, ArrayList<Excp> results) {
searchArrayList = results;
mInflater = LayoutInflater.from(context);
checked = new HashMap<Integer, Boolean>(getCount());
custom_font = Typeface.createFromAsset(context.getAssets(), "fonts/DejaVuSans.ttf");
}
public int getCount() {
return searchArrayList.size();
}
public Object getItem(int position) {
return searchArrayList.get(position);
}
public long getItemId(int position) {
return position;
}
// created custom view
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.custom_row_view, null);
holder = new ViewHolder();
holder.myTable = (TableLayout) convertView.findViewById(R.id.myTable);
holder.txtExcId = (TextView) convertView.findViewById(R.id.lblExcId);
holder.txtEmpNm = (TextView) convertView.findViewById(R.id.lblExcEmpNm);
holder.txtFrmDt = (TextView) convertView.findViewById(R.id.lblExcFrmDtVal);
holder.txtToDt = (TextView) convertView.findViewById(R.id.lblExcToDtVal);
holder.txtExcTyp = (TextView) convertView.findViewById(R.id.lblExcTyp);
holder.txtExcStat = (TextView) convertView.findViewById(R.id.lblExcStat);
holder.txtEmpCmt = (TextView) convertView.findViewById(R.id.lblExcEmpCmt);
holder.checkBox = (CheckBox) convertView.findViewById(R.id.chkBx);
convertView.setTag(holder);
convertView.setTag(R.id.chkBx, holder.checkBox);
} else {
holder = (ViewHolder) convertView.getTag();
}
System.out.println("exception_name" + searchArrayList.get(position).getEmpNm());
holder.txtExcId.setText(Integer.toString(searchArrayList.get(position).getExcId()));
holder.txtEmpNm.setText(searchArrayList.get(position).getEmpNm());
holder.txtFrmDt.setText(searchArrayList.get(position).getFromDt());
holder.txtToDt.setText(searchArrayList.get(position).getToDt());
holder.txtExcTyp.setText(searchArrayList.get(position).getExcType());
holder.txtExcStat.setText(searchArrayList.get(position).getExcStatus());
holder.txtEmpCmt.setText(searchArrayList.get(position).getEmpComments());
holder.checkBox.setTag(position);
holder.checkBox.setChecked(searchArrayList.get(position).isChecked());
CheckBox checkBox = (CheckBox) convertView.findViewById(R.id.chkBx);
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
System.out.println("selected");
int checkBoxId = (Integer) buttonView.getTag();
holder.checkBox.setChecked(buttonView.isChecked() ? true : false);
searchArrayList.get(checkBoxId).setChecked(buttonView.isChecked() ? true : false);
System.out.println("checkBoxId " + checkBoxId);
}
});
holder.checkBox.setTag(position);
holder.txtExcId.setTypeface(custom_font);
holder.txtEmpNm.setTypeface(custom_font);
holder.txtFrmDt.setTypeface(custom_font);
holder.txtToDt.setTypeface(custom_font);
holder.txtExcTyp.setTypeface(custom_font);
holder.txtExcStat.setTypeface(custom_font);
holder.txtEmpCmt.setTypeface(custom_font);
return convertView;
}
static class ViewHolder {
TableLayout myTable;
TextView txtExcId;
TextView txtEmpNm;
TextView txtFrmDt;
TextView txtToDt;
TextView txtExcTyp;
TextView txtExcStat;
TextView txtEmpCmt;
CheckBox checkBox;
}
}
答案 0 :(得分：0)
CheckBox checkBox = (CheckBox) convertView.findViewById(R.id.chkBx);
您已经在持有人中存储了复选框参考，我想知道您为什么要再次初始化它。
holder.checkBox.setChecked(buttonView.isChecked() ? true : false);
当用户点击复选框时，将会更改已检查状态，因此无需再次更改已检查状态。
尝试以下代码
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holder.checkBox.setTag(position);
holder.checkBox.setChecked(searchArrayList.get(position).isChecked());
holder.checkBox..setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
System.out.println("selected");
int checkBoxId = (Integer) buttonView.getTag();
searchArrayList.get(checkBoxId).setChecked(buttonView.isChecked() ? true : false);
System.out.println("checkBoxId " + checkBoxId);
}
});
holder.checkBox.setTag(position);
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