如何记录ListView滚动后CheckBox保持选中状态以及当全选后让滚动出来的item也被选中

1. 定义成员变量用于记录ListView所有item的选中状态：

private Map<Integer, Boolean> checkStatusMap = new HashMap<Integer, Boolean>();

2. 在adapter初始化时候向checkStatusMap中put listView数据个数的false（false意味着一开始都是未选中）：

private class CallLogListAdapter extends BaseAdapter {        private Context context;        private ViewItemHolder holder;        private LayoutInflater inflater;                public CallLogListAdapter(Context c) {            this.context = c;            this.inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);            int position = 0;            for(int i = 0; i < recordList.size(); i++){                checkStatusMap.put(position++, false);            }        }

3. 在listView的onItemClick()方法或者checkbox的onClick()方法方法中记录checkbox选中状态：

@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position, long id) {ViewItemHolder holder = (ViewItemHolder) view.getTag();holder.contactIsDelCheckBox.toggle();boolean isChecked = holder.contactIsDelCheckBox.isChecked();// save CheckBox statuscheckStatusMap.put(position - 1, isChecked);               //...}

4. 在adapter的getView()方法中从checkStatusMap中获取选中

@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {   if (convertView != null) {holder = (ViewItemHolder) convertView.getTag();   } else {convertView = inflater.inflate(R.layout.call_log_delete_preview_item, null);holder = new ViewItemHolder();holder.contactTimeTextView= (TextView) convertView.findViewById(R.id.contact_time);holder.contactTypeImageView = (ImageView) convertView.findViewById(R.id.contact_type);holder.contactNumberTextView = (TextView) convertView.findViewById(R.id.contact_number);holder.contactByImageView = (ImageView) convertView.findViewById(R.id.contact_by);holder.contactDurationTextView = (TextView) convertView.findViewById(R.id.contact_duration);holder.contactIsDelCheckBox = (CheckBox) convertView.findViewById(R.id.contact_is_delete);convertView.setTag(holder);   }   // init holder   // ......   // get checkbox check status   holder.contactIsDelCheckBox.setChecked(checkStatusMap.get(position));   return convertView;}

5.  如果点击了全选CheckBox，则往checkStatusMap中遍历put进入全部true 否则put进入全部false：

private void checkAllRecord(boolean isChecked){int size = recordListView.getChildCount();if(isChecked){for(int i = 1; i < size; i++){RelativeLayout layout = (RelativeLayout) recordListView.getChildAt(i);CheckBox isDel = (CheckBox) layout.findViewById(R.id.contact_is_delete);isDel.setChecked(true);}mRecordDelButton.setEnabled(true);// set all checkbox check status to be checkedfor(int i = 0; i < checkStatusMap.size(); i++){checkStatusMap.put(i, true);}}else{for(int i = 1; i < size; i++){RelativeLayout layout = (RelativeLayout) recordListView.getChildAt(i);CheckBox isDel = (CheckBox) layout.findViewById(R.id.contact_is_delete);isDel.setChecked(false);}mRecordDelButton.setEnabled(false);// set all checkbox check status to be uncheckedfor(int i = 0; i < checkStatusMap.size(); i++){checkStatusMap.put(i, false);}}}