Android 在Listview中未维护复选框状态
我正在设置删除多个项目的复选框。当我选中元素时，我的“添加”按钮将更改 要删除，但当我滚动列表视图时，我的“删除”按钮将更改为“添加”按钮，但在未选中所有复选框之前，该按钮不应出现。为了在操作栏中维护“删除”和“添加”按钮，我在单击“检查”时使用列表框，我将元素的当前位置设置为“复选框”，当复选框未选中时，从复选框中删除该位置 这里我的问题是，当选中复选框时，添加符号会更改为 删除图标。当我滚动并且选中的记录不在屏幕上时 删除图标更改为添加图标，当我滚动回选中的 记录后，删除图标返回。我对Listview中的此复选框感到非常困惑。请检查我的代码以帮助我 提前谢谢 包com.office.sdpa.custom.classes 公共类管理器扩展ArrayAdapter{Android 在Listview中未维护复选框状态,android,checkbox,android-listview,Android,Checkbox,Android Listview,我正在设置删除多个项目的复选框。当我选中元素时，我的“添加”按钮将更改 要删除，但当我滚动列表视图时，我的“删除”按钮将更改为“添加”按钮，但在未选中所有复选框之前，该按钮不应出现。为了在操作栏中维护“删除”和“添加”按钮，我在单击“检查”时使用列表框，我将元素的当前位置设置为“复选框”，当复选框未选中时，从复选框中删除该位置 这里我的问题是，当选中复选框时，添加符号会更改为 删除图标。当我滚动并且选中的记录不在屏幕上时 删除图标更改为添加图标，当我滚动回选中的 记录后，删除图标返回。我对Lis
私人最终名单；
私人最终活动背景；
布尔checkAll_标志=false；
布尔checkItem_标志=false；
List SelectedBox=新建ArrayList（）；
菜单项删除，添加日志；
public ManagePracAdapter（活动上下文、列表、MenuItem mymenu、MenuItem myaddlog）{
super（上下文、R.layout.row、列表）；
this.context=上下文；
this.list=列表；
删除=我的菜单；
addlog=myaddlog；
}
静态类视窗夹{
受保护的文本查看文本；
受保护的文本视图日期时间；
受保护的天气；
受保护的文本视图持续时间；
受保护的文本视图管理器；
受保护的文本视图昼夜图标；
受保护复选框；
}
@凌驾
公共视图getView（最终整数位置、视图转换视图、视图组父视图）{
ViewHolder ViewHolder=null；
if（convertView==null）{
LayoutInflater充气器=上下文。getLayoutInflater（）；
convertView=充气机。充气（R.layout.logitem1，空）；
viewHolder=新的viewHolder（）；
viewHolder.text=（TextView）convertView.findViewById（R.id.id\u）；
viewHolder.datetime=（TextView）convertView.findViewById（R.id.id\u datetime）；
viewHolder.weather=（TextView）convertView.findViewById（R.id.id\u weather）；
viewHolder.duration=（TextView）convertView.findViewById（R.id.totminutes）；
viewHolder.supervisor=（TextView）convertView.findViewById（R.id.conditions）；
viewHolder.day\u night\u icon=（TextView）convertView.findViewById（R.id.day\u night\u icon）；
viewHolder.checkbox=（checkbox）convertView.findViewById（R.id.id_chkDelete）；
viewHolder.checkbox.setOnCheckedChangeListener（新建CompoundButton.OnCheckedChangeListener（））{
@凌驾
检查更改后的公共无效（复合按钮视图，布尔值已检查）{
int getPosition=（Integer）buttonView.getTag（）；//这里我们使用setTag获取为复选框设置的位置。
list.get（getPosition）.setSelected（buttonView.isChecked（））；//设置复选框的值以保持其状态。
if（SelectedBox.size（）-1==0）
{
Delete.setVisible（false）；
addlog.setVisible（true）；
}否则
{
addlog.setVisible（false）；
}
如果（已检查）
{
选择框。添加（位置）；
Delete.setVisible（true）；
addlog.setVisible（false）；
}else/*如果（！已检查）*/
{
SelectedBox.remove（SelectedBox.indexOf（位置））；
}
}
});
convertView.setTag（viewHolder）；
setTag（R.id.id\u，viewHolder.text）；
setTag（R.id.id_chkDelete，viewHolder.checkbox）；
setTag（R.id.id_datetime，viewHolder.datetime）；
convertView.setTag（R.id.id_weather，viewHolder.weather）；
setTag（R.id.totminutes，viewHolder.duration）；
convertView.setTag（R.id.conditions、viewHolder.supervisor）；
convertView.setTag（R.id.day\u night\u图标、viewHolder.day\u night\u图标）；
}否则{
viewHolder=（viewHolder）convertView.getTag（）；
}
viewHolder.checkbox.setTag（位置）；//这一行很重要。
viewHolder.text.setText（list.get（position.getName（））；
viewHolder.datetime.setText（list.get（position.getDatetime（））；
viewHolder.weather.setText（list.get（position.getWeather（））；
viewHolder.checkbox.setChecked（list.get（position.isSelected（））；
if（！list.get（position）.getDay_minutes（）.toString（）.equalsIgnoreCase（“0”））
{
viewHolder.duration.setText（list.get（position.getDay_minutes（））；
viewHolder.day\u night\u图标.setBackgroundResource（R.drawable.sun）；
}否则
{
viewHolder.duration.setText（list.get（position.getNight_minutes（））；
viewHolder.day\u night\u图标。setBackgroundResource（R.drawable.moon）；
}
if（list.get（position.getSupervisor（）.equals（“无主管”））
{
viewHolder.supervisor.setBackgroundResource（R.drawable.pending）；
}否则
{
视图持有者、主管、挫折资源（R.可绘制、批准）；
}
字符串fontPath=“font/Roboto Light.ttf”；
Typeface tf=Typeface.createFromAsset（context.getAssets（），fontPath）；
viewHolder.datetime.setTypeface（tf）；
viewHolder.duration.setTypeface（tf）；
viewHolder.text.setTypeface（tf）；
viewHolder.weather.setTypeface（tf）；
Delete.setOnMenuItemClickListener（新的OnMenuItemClickListener（）{
@凌驾
公共布尔onMenuItemClick（菜单项）{
//TODO自动生成的方法存根
AlertDialog.Builder alertDialogBuilder=新建AlertDialog.Builder（上下文）；
//定名
alertDialogBuilder.setTitle（“学生驾驶练习日志”）；
//设置对话框消息
alertDialogBuilder
塞特梅萨先生
private final List<Model> list;
private final Activity context;
boolean checkAll_flag = false;
boolean checkItem_flag = false;
List<Integer> SelectedBox= new ArrayList<Integer>();
MenuItem Delete,addlog;
public ManagePracAdapter(Activity context, List<Model> list,MenuItem mymenu,MenuItem myaddlog) {
super(context, R.layout.row, list);
this.context = context;
this.list = list;
Delete=mymenu;
addlog=myaddlog;
}
static class ViewHolder {
protected TextView text;
protected TextView datetime;
protected TextView weather;
protected TextView duration;
protected TextView supervisor;
protected TextView day_night_icon;
protected CheckBox checkbox;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
convertView = inflator.inflate(R.layout.logitem1, null);
viewHolder = new ViewHolder();
viewHolder.text = (TextView) convertView.findViewById(R.id.id_skills);
viewHolder.datetime = (TextView) convertView.findViewById(R.id.id_datetime);
viewHolder.weather = (TextView) convertView.findViewById(R.id.id_weather);
viewHolder.duration=(TextView) convertView.findViewById(R.id.totminutes);
viewHolder.supervisor=(TextView) convertView.findViewById(R.id.conditions);
viewHolder.day_night_icon=(TextView) convertView.findViewById(R.id.day_night_icon);
viewHolder.checkbox = (CheckBox) convertView.findViewById(R.id.id_chkDelete);
viewHolder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag(); // Here we get the position that we have set for the checkbox using setTag.
list.get(getPosition).setSelected(buttonView.isChecked()); // Set the value of checkbox to maintain its state.
if(SelectedBox.size()-1==0)
{
Delete.setVisible(false);
addlog.setVisible(true);
}else
{
addlog.setVisible(false);
}
if(isChecked)
{
SelectedBox.add(position);
Delete.setVisible(true);
addlog.setVisible(false);
}else /*if(!isChecked)*/
{
SelectedBox.remove(SelectedBox.indexOf(position));
}
}
});
convertView.setTag(viewHolder);
convertView.setTag(R.id.id_skills, viewHolder.text);
convertView.setTag(R.id.id_chkDelete, viewHolder.checkbox);
convertView.setTag(R.id.id_datetime,viewHolder.datetime);
convertView.setTag(R.id.id_weather,viewHolder.weather);
convertView.setTag(R.id.totminutes,viewHolder.duration);
convertView.setTag(R.id.conditions,viewHolder.supervisor);
convertView.setTag(R.id.day_night_icon,viewHolder.day_night_icon);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.checkbox.setTag(position); // This line is important.
viewHolder.text.setText(list.get(position).getName());
viewHolder.datetime.setText(list.get(position).getDatetime());
viewHolder.weather.setText(list.get(position).getWeather());
viewHolder.checkbox.setChecked(list.get(position).isSelected());
if(!list.get(position).getDay_minutes().toString().equalsIgnoreCase("0"))
{
viewHolder.duration.setText(list.get(position).getDay_minutes());
viewHolder.day_night_icon.setBackgroundResource(R.drawable.sun);
}else
{
viewHolder.duration.setText(list.get(position).getNight_minutes());
viewHolder.day_night_icon.setBackgroundResource(R.drawable.moon);
}
if(list.get(position).getSupervisor().equals("No supervisor"))
{
viewHolder.supervisor.setBackgroundResource(R.drawable.pending);
}else
{
viewHolder.supervisor.setBackgroundResource(R.drawable.approve);
}
String fontPath = "fonts/Roboto-Light.ttf";
Typeface tf = Typeface.createFromAsset(context.getAssets(), fontPath);
viewHolder.datetime.setTypeface(tf);
viewHolder.duration.setTypeface(tf);
viewHolder.text.setTypeface(tf);
viewHolder.weather.setTypeface(tf);
Delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
// TODO Auto-generated method stub
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(context);
// set title
alertDialogBuilder.setTitle("Student Driving Practice Log");
// set dialog message
alertDialogBuilder
.setMessage("Are you sure want to Delete Record!")
.setCancelable(false)
.setPositiveButton("Yes",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
try
{
NewNewDataHelper db=new NewNewDataHelper(context);
if(!SelectedBox.isEmpty())
{
for(int i=0;i<SelectedBox.size();i++)
{
// resultp=data.get(SelectedBox.get(i));
String str[]=list.get(i).getDatetime().split(" ");
Log.d("Checked Element",str[0]+"\n"+str[1]+"\n"+list.get(i).getName());
db.DeleteSingleLog(list.get(i).getName(),str[0],str[1]);
/*resultp=data.get(SelectedBox.get(i));
String str[]=resultp.get("date_time").split(" ");
db.DeleteSingleLog(resultp.get("Skill"),str[0],str[1]);*/
Toast.makeText(context,"Record Deleted", Toast.LENGTH_LONG).show();
}
Log.d("LISTSTSTSTST", SelectedBox.toString());
Intent intent = new Intent(context,ManagePracticeLogActivity.class);
intent.putExtra("s11", "delete");
context.startActivity(intent);
}
}catch(Exception e)
{
}
}
})
.setNegativeButton("No",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
return false;
}
});
convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String str1 = null;
String str[]=list.get(position).getDatetime().split(" ");
Log.d("PARTICULAR SKILLLLL",str[1]);
str1=str[0]+"~"+list.get(position).getName()+"~"+str[1];
Log.d("PARTICULAR SKILLLLL", str1);
Intent intent = new Intent(context,LogEdit.class);
intent.putExtra("s11","Update Practice");
intent.putExtra("dataupdate",str1);
context.startActivity(intent);
}
});
return convertView;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
convertView = inflator.inflate(R.layout.logitem1, null);
viewHolder = new ViewHolder();
viewHolder.text = (TextView) convertView.findViewById(R.id.id_skills);
viewHolder.datetime = (TextView) convertView.findViewById(R.id.id_datetime);
viewHolder.weather = (TextView) convertView.findViewById(R.id.id_weather);
viewHolder.duration=(TextView) convertView.findViewById(R.id.totminutes);
viewHolder.supervisor=(TextView) convertView.findViewById(R.id.conditions);
viewHolder.day_night_icon=(TextView) convertView.findViewById(R.id.day_night_icon);
viewHolder.checkbox = (CheckBox) convertView.findViewById(R.id.id_chkDelete);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.text.setText(list.get(position).getName());
viewHolder.datetime.setText(list.get(position).getDatetime());
viewHolder.weather.setText(list.get(position).getWeather());
viewHolder.checkbox.setChecked(list.get(position).isSelected());
if(!list.get(position).getDay_minutes().toString().equalsIgnoreCase("0"))
{
viewHolder.duration.setText(list.get(position).getDay_minutes());
viewHolder.day_night_icon.setBackgroundResource(R.drawable.sun);
}else
{
viewHolder.duration.setText(list.get(position).getNight_minutes());
viewHolder.day_night_icon.setBackgroundResource(R.drawable.moon);
}
if(list.get(position).getSupervisor().equals("No supervisor"))
{
viewHolder.supervisor.setBackgroundResource(R.drawable.pending);
}else
{
viewHolder.supervisor.setBackgroundResource(R.drawable.approve);
}
String fontPath = "fonts/Roboto-Light.ttf";
Typeface tf = Typeface.createFromAsset(context.getAssets(), fontPath);
viewHolder.datetime.setTypeface(tf);
viewHolder.duration.setTypeface(tf);
viewHolder.text.setTypeface(tf);
viewHolder.weather.setTypeface(tf);
viewHolder.checkbox.setTag(position); // This line is important.
viewHolder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
list.get(position).setSelected(isChecked); // Set the value of checkbox to maintain its state.
if(SelectedBox.size()-1==0)
{
Delete.setVisible(false);
addlog.setVisible(true);
}else
{
addlog.setVisible(false);
}
if(isChecked)
{
SelectedBox.add(position);
Delete.setVisible(true);
addlog.setVisible(false);
}else /*if(!isChecked)*/
{
SelectedBox.remove(SelectedBox.indexOf(position));
}
}
});
Delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(context);
// set title
alertDialogBuilder.setTitle("Student Driving Practice Log");
// set dialog message
alertDialogBuilder
.setMessage("Are you sure want to Delete Record!")
.setCancelable(false)
.setPositiveButton("Yes",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
try
{
NewNewDataHelper db=new NewNewDataHelper(context);
if(!SelectedBox.isEmpty())
{
for(int i=0;i<SelectedBox.size();i++)
{
// resultp=data.get(SelectedBox.get(i));
String str[]=list.get(i).getDatetime().split(" ");
Log.d("Checked Element",str[0]+"\n"+str[1]+"\n"+list.get(i).getName());
db.DeleteSingleLog(list.get(i).getName(),str[0],str[1]);
/*resultp=data.get(SelectedBox.get(i));
String str[]=resultp.get("date_time").split(" ");
db.DeleteSingleLog(resultp.get("Skill"),str[0],str[1]);*/
Toast.makeText(context,"Record Deleted", Toast.LENGTH_LONG).show();
}
Log.d("LISTSTSTSTST", SelectedBox.toString());
Intent intent = new Intent(context,ManagePracticeLogActivity.class);
intent.putExtra("s11", "delete");
context.startActivity(intent);
}
}catch(Exception e)
{
}
}
})
.setNegativeButton("No",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
return false;
}
});
convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String str1 = null;
String str[]=list.get(position).getDatetime().split(" ");
Log.d("PARTICULAR SKILLLLL", str[1]);
str1=str[0]+"~"+list.get(position).getName()+"~"+str[1];
Log.d("PARTICULAR SKILLLLL", str1);
Intent intent = new Intent(context,LogEdit.class);
intent.putExtra("s11","Update Practice");
intent.putExtra("dataupdate",str1);
context.startActivity(intent);
}
});
return convertView;
}
public class ViewHolder
{
TextView contactname, statusmsg, msisdnview, imgview, chatstsview;
ImageView img;
CheckBox contactCheckBox;
}
ViewHolder holder = null;
@Override
public View getView(final int position, View convertView, ViewGroup parent)
{
// TODO Auto-generated method stub
holder=new ViewHolder();
View rowView = convertView;
if(rowView == null)
{
rowView = inflater.inflate(R.layout.contact_list, null);
holder.contactname=(TextView) rowView.findViewById(R.id.textView1);
holder.statusmsg=(TextView) rowView.findViewById(R.id.textView2);
holder.img=(ImageView) rowView.findViewById(R.id.imageView1);
holder.contactCheckBox = (CheckBox) rowView.findViewById(R.id.contactchk);
rowView.setTag(holder);
}
else
{
holder = (ViewHolder) rowView.getTag();
}
holder.contactname.setTag("textview_"+msisdn[position]);
holder.contactCheckBox.setTag("checkbox_"+msisdn[position]);
holder.contactname.setText(result[position]);
ImageLoader img = new ImageLoader(context);
img.DisplayImage(imageId[position], loader, holder.img);
holder.statusmsg.setText(status[position]);
holder.contactCheckBox.setTag(position);
holder.contactCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
// TODO Auto-generated method stub
int getPosition = (Integer) buttonView.getTag();
isCheckedCheckBox[getPosition] = buttonView.isChecked();
}
});
if(isCheckedCheckBox[position])
{
holder.contactCheckBox.setChecked(true);
}
else
{
holder.contactCheckBox.setChecked(false);
}
holder.contactCheckBox.setOnClickListener(null);
rowView.setTag(holder);
return rowView;
}