Android 滚动时，列表中项目的ImageView被洗牌

我有一个列表，当用户单击该列表中的某个项目时，该项目下会显示三个按钮（即Yes、No和Maybe），因此用户可以选择其中任何一个按钮，该响应（1,2,3表示Yes、No、Maybe）将被保存。在适配器的getView中，我们只需检索该响应并在所有列表项目的行上显示imageView

在ArrayAdapter的getView中设置图像

EventUserRelationMO eventUserRelationMO1 =new EventUserRelationMO();
                    eventId1 = eventUserRelationMO1.getEventId();
                    if (eventId1 == eventIdPosition) {
                        long eventUserId = eventUserRelationMO1.getEventUserId();

                        int isAttending = eventUserRelationMO1.getIsAttending();
                        if (isAttending == 1) {
                            holder.no.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        } else if (isAttending == 2) {
                            holder.yes.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        } else if (isAttending == 3) {
                            holder.yes.setVisibility(View.GONE);
                            holder.no.setVisibility(View.GONE);
                        } else {
                            holder.yes.setVisibility(View.GONE);
                            holder.no.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        }

                    }

这是完美的工作方式，但当我在列表中有更多的项目时，相应的项目/在滚动时，图像不可见

private class UserOccasions extends ArrayAdapter<EventMO> {
        private ArrayList<EventMO> eventMOs;
        LayoutInflater mInflater;

        UserOccasions(Context context, int textViewResourceId,
                      ArrayList<EventMO> eventMOs) {
            super(context, textViewResourceId, eventMOs);
            this.eventMOs = new ArrayList<EventMO>();
            this.eventMOs.addAll(eventMOs);
            mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        }

        public class ViewHolder {
            TextView eventNameTxtV;
            TextView eventPlaceTxtV;
            TextView sendByNameTxtv;
            ImageView yes;
            ImageView no;
            ImageView maybe;

        }

        @Override
        public int getCount() {
            return eventMOs.size();
        }

        /*@Override
        public Object getItem(int position) {
            return position;
        }*/

        @Override
        public long getItemId(int position) {
            return 0;
        }

        // show list values name and mobile number in contact page
        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            final EventMO eventMO = eventMOs.get(position);
            if (null == convertView) {
                convertView = mInflater.inflate(R.layout.invitation, null);
                holder = new ViewHolder();
                holder.eventNameTxtV = (TextView) convertView.findViewById(R.id.invitationTitle);
                holder.eventPlaceTxtV = (TextView) convertView.findViewById(R.id.invitationCheckBox);
                holder.sendByNameTxtv = (TextView) convertView.findViewById(R.id.sendByName);
                holder.yes = (ImageView) convertView.findViewById(R.id.yes);
                holder.no = (ImageView) convertView.findViewById(R.id.no);
                holder.maybe = (ImageView) convertView.findViewById(R.id.maybe);

                eventUserRelationMOs = eventMO.getEventUserRelationBOs();
                sendUserMO = eventMO.getUserBO();
                eventIdPosition = eventMO.getEventId();


                for (EventUserRelationMO eventUserRelationMO1 : eventUserRelationMOs) {
                    eventId1 = eventUserRelationMO1.getEventId();
                    if (eventId1 == eventIdPosition) {
                        long eventUserId = eventUserRelationMO1.getEventUserId();

                        int isAttending = eventUserRelationMO1.getIsAttending();
                        if (isAttending == 1) {
                            holder.no.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        } else if (isAttending == 2) {
                            holder.yes.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        } else if (isAttending == 3) {
                            holder.yes.setVisibility(View.GONE);
                            holder.no.setVisibility(View.GONE);
                        } else {
                            holder.yes.setVisibility(View.GONE);
                            holder.no.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        }

                    }
                }
                convertView.setTag(holder);

            } else {
                holder = (ViewHolder) convertView.getTag();
            }
            holder.yes.setTag(eventMOs.get(position));
            holder.no.setTag(eventMOs.get(position));
            holder.maybe.setTag(eventMOs.get(position));

                       holder.eventNameTxtV.setText(eventMOs.get(position).getText());
            holder.eventPlaceTxtV.setText(eventMOs.get(position).getPlace());
            holder.sendByNameTxtv.setText(sendUserMO.getUserName());

                       View v = convertView.findViewById(R.id.invitation_single);

            v.getRootView().setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                   Intent occasionAct = new Intent(InvitationFragment.this.getActivity(), InvitationActivity.class);
                    occasionAct.putExtra("eventMO", eventMO);
                    occasionAct.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(occasionAct);

                }

            });

            return convertView;

        }

私有类UserAdapter{
私人ArrayList eventMOs；
拉平机；
用户场合（上下文，int textViewResourceId，
ArrayList事件（MOS）{
超级（上下文、textViewResourceId、eventMOs）；
this.eventMOs=新的ArrayList（）；
this.eventMOs.addAll（eventMOs）；
mInflater=（LayoutInflater）context.getSystemService（context.LAYOUT\u充气机\u服务）；
}
公共类视图持有者{
TextView事件名称txtv；
text查看事件地点txtv；
TextView sendByNameTxtv；
ImageView是；
图像视图编号；
图像视图可能；
}
@凌驾
public int getCount（）{
返回eventMOs.size（）；
}
/*@凌驾
公共对象getItem（int位置）{
返回位置；
}*/
@凌驾
公共长getItemId（int位置）{
返回0；
}
//在联系人页面中显示列表值姓名和手机号码
@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=null；
final EventMO EventMO=eventMOs.get（位置）；
if（null==convertView）{
convertView=mInflater.inflate（R.layout.Investment，null）；
holder=新的ViewHolder（）；
holder.eventNameTxtV=（TextView）convertView.findViewById（R.id.invitationTitle）；
holder.eventPlaceTxtV=（TextView）convertView.findViewById（R.id.invitationCheckBox）；
holder.sendByName txtv=（TextView）convertView.findViewById（R.id.sendByName）；
holder.yes=（ImageView）convertView.findViewById（R.id.yes）；
holder.no=（ImageView）convertView.findViewById（R.id.no）；
holder.maybe=（ImageView）convertView.findViewById（R.id.maybe）；
eventUserRelationMOs=eventMO.getEventUserRelationBOs（）；
sendUserMO=eventMO.getUserBO（）；
eventIdPosition=eventMO.getEventId（）；
对于（EventUserRelationMO eventUserRelationMO1:eventUserRelationMOs）{
eventId1=eventUserRelationMO1.getEventId（）；
if（eventId1==eventIdPosition）{
long eventUserId=eventUserRelationMO1.getEventUserId（）；
int isAttending=eventUserRelationMO1.getIsAttending（）；
如果（isAttending==1）{
支架编号setVisibility（视图已消失）；
holder.maybe.setVisibility（View.GONE）；
}else if（isAttending==2）{
holder.yes.setVisibility（视图已消失）；
holder.maybe.setVisibility（View.GONE）；
}否则如果（isAttending==3）{
holder.yes.setVisibility（视图已消失）；
支架编号setVisibility（视图已消失）；
}否则{
holder.yes.setVisibility（视图已消失）；
支架编号setVisibility（视图已消失）；
holder.maybe.setVisibility（View.GONE）；
}
}
}
convertView.setTag（支架）；
}否则{
holder=（ViewHolder）convertView.getTag（）；
}
holder.yes.setTag（eventMOs.get（position））；
持有者编号setTag（eventMOs.get（位置））；
holder.maybe.setTag（eventMOs.get（position））；
holder.eventNameTxtV.setText（eventMOs.get（position.getText（））；
holder.eventPlaceTxtV.setText（eventMOs.get（position.getPlace（））；
holder.sendByNameTxtv.setText（sendUserMO.getUserName（））；
视图v=convertView.findViewById（R.id.u单个）；
v、 getRootView（）.setOnClickListener（新视图.OnClickListener（））{
@凌驾
公共void onClick（视图v）{
Intent-occasionAct=newintent（InvitationFragment.this.getActivity（），InvitationActivity.class）；
occasionAct.putExtra（“eventMO”，eventMO）；
occasionAct.addFlags（意图、标志、活动、清除、顶部）；
星触觉（occasionAct）；
}
});
返回视图；
}

---

这是我的完整适配器代码。滚动时，任何人都可以帮助我为列表中的每个项目维护相应的imageView。ListView通过循环视图工作。要了解其工作原理，请查看此（）

private class UserOccasions extends ArrayAdapter<EventMO> {
        private ArrayList<EventMO> eventMOs;
        LayoutInflater mInflater;

        UserOccasions(Context context, int textViewResourceId,
                      ArrayList<EventMO> eventMOs) {
            super(context, textViewResourceId, eventMOs);
            this.eventMOs = new ArrayList<EventMO>();
            this.eventMOs.addAll(eventMOs);
            mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        }

        public class ViewHolder {
            TextView eventNameTxtV;
            TextView eventPlaceTxtV;
            TextView sendByNameTxtv;
            ImageView yes;
            ImageView no;
            ImageView maybe;

        }

        @Override
        public int getCount() {
            return eventMOs.size();
        }

        /*@Override
        public Object getItem(int position) {
            return position;
        }*/

        @Override
        public long getItemId(int position) {
            return 0;
        }

        // show list values name and mobile number in contact page
        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            final EventMO eventMO = eventMOs.get(position);
            if (null == convertView) {
                convertView = mInflater.inflate(R.layout.invitation, null);
                holder = new ViewHolder();
                holder.eventNameTxtV = (TextView) convertView.findViewById(R.id.invitationTitle);
                holder.eventPlaceTxtV = (TextView) convertView.findViewById(R.id.invitationCheckBox);
                holder.sendByNameTxtv = (TextView) convertView.findViewById(R.id.sendByName);
                holder.yes = (ImageView) convertView.findViewById(R.id.yes);
                holder.no = (ImageView) convertView.findViewById(R.id.no);
                holder.maybe = (ImageView) convertView.findViewById(R.id.maybe);

                eventUserRelationMOs = eventMO.getEventUserRelationBOs();
                sendUserMO = eventMO.getUserBO();
                eventIdPosition = eventMO.getEventId();


                for (EventUserRelationMO eventUserRelationMO1 : eventUserRelationMOs) {
                    eventId1 = eventUserRelationMO1.getEventId();
                    if (eventId1 == eventIdPosition) {
                        long eventUserId = eventUserRelationMO1.getEventUserId();

                        int isAttending = eventUserRelationMO1.getIsAttending();
                        if (isAttending == 1) {
                            holder.no.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        } else if (isAttending == 2) {
                            holder.yes.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        } else if (isAttending == 3) {
                            holder.yes.setVisibility(View.GONE);
                            holder.no.setVisibility(View.GONE);
                        } else {
                            holder.yes.setVisibility(View.GONE);
                            holder.no.setVisibility(View.GONE);
                            holder.maybe.setVisibility(View.GONE);
                        }

                    }
                }
                convertView.setTag(holder);

            } else {
                holder = (ViewHolder) convertView.getTag();
            }
            holder.yes.setTag(eventMOs.get(position));
            holder.no.setTag(eventMOs.get(position));
            holder.maybe.setTag(eventMOs.get(position));

                       holder.eventNameTxtV.setText(eventMOs.get(position).getText());
            holder.eventPlaceTxtV.setText(eventMOs.get(position).getPlace());
            holder.sendByNameTxtv.setText(sendUserMO.getUserName());

                       View v = convertView.findViewById(R.id.invitation_single);

            v.getRootView().setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                   Intent occasionAct = new Intent(InvitationFragment.this.getActivity(), InvitationActivity.class);
                    occasionAct.putExtra("eventMO", eventMO);
                    occasionAct.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(occasionAct);

                }

            });

            return convertView;

        }

代码的问题是，当convertView为null时，图像仅被设置一次。当您滚动列表时，列表视图将循环行传递到getView函数（此时convertView将不为null）。在这种情况下，您没有设置ImageView

我已经修改了代码，应该可以了

// show list values name and mobile number in contact page
    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        final EventMO eventMO = eventMOs.get(position);
        if (null == convertView) {
            convertView = mInflater.inflate(R.layout.invitation, null);
            holder = new ViewHolder();
            holder.eventNameTxtV = (TextView) convertView.findViewById(R.id.invitationTitle);
            holder.eventPlaceTxtV = (TextView) convertView.findViewById(R.id.invitationCheckBox);
            holder.sendByNameTxtv = (TextView) convertView.findViewById(R.id.sendByName);
            holder.yes = (ImageView) convertView.findViewById(R.id.yes);
            holder.no = (ImageView) convertView.findViewById(R.id.no);
            holder.maybe = (ImageView) convertView.findViewById(R.id.maybe);
            convertView.setTag(holder);

        } else {
            holder = (ViewHolder) convertView.getTag();
        }


        eventUserRelationMOs = eventMO.getEventUserRelationBOs();
        sendUserMO = eventMO.getUserBO();
        eventIdPosition = eventMO.getEventId();


         for (EventUserRelationMO eventUserRelationMO1 : eventUserRelationMOs) {
            eventId1 = eventUserRelationMO1.getEventId();
            if (eventId1 == eventIdPosition) {
                long eventUserId = eventUserRelationMO1.getEventUserId();

                int isAttending = eventUserRelationMO1.getIsAttending();
                if (isAttending == 1) {
                    holder.no.setVisibility(View.GONE);
                    holder.maybe.setVisibility(View.GONE);
                } else if (isAttending == 2) {
                    holder.yes.setVisibility(View.GONE);
                    holder.maybe.setVisibility(View.GONE);
                } else if (isAttending == 3) {
                    holder.yes.setVisibility(View.GONE);
                    holder.no.setVisibility(View.GONE);
                } else {
                    holder.yes.setVisibility(View.GONE);
                    holder.no.setVisibility(View.GONE);
                    holder.maybe.setVisibility(View.GONE);
                }

            }
        }

        holder.yes.setTag(eventMOs.get(position));
        holder.no.setTag(eventMOs.get(position));
        holder.maybe.setTag(eventMOs.get(position));

        holder.eventNameTxtV.setText(eventMOs.get(position).getText());
        holder.eventPlaceTxtV.setText(eventMOs.get(position).getPlace());
        holder.sendByNameTxtv.setText(sendUserMO.getUserName());

        View v = convertView.findViewById(R.id.invitation_single);

        v.getRootView().setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               Intent occasionAct = new Intent(InvitationFragment.this.getActivity(), InvitationActivity.class);
                occasionAct.putExtra("eventMO", eventMO);
                occasionAct.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(occasionAct);

            }

        });

        return convertView;

    }

---

感谢您的回复我已经尝试了您的代码，但是当我为第一个项目设置图标时，它为两个项目设置了图标-第一个和第七个。在滚动@Anirudh R Kashyap时，图标也会乱序