单击 android 中的复选框

Question

我正在实现带有 40 个动态复选框的列表视图。问题是，当我单击 1 个复选框时，其他几个复选框也会被选中，例如，如果我单击单个复选框，那么它也会使其他几个复选框被选中。我为此使用 onClickListener。下面给出了我的代码片段之一：

public View getView(final int position, View convertView,ViewGroup parent) {
        View row=convertView;
        FilterViewHolder holder;
        if (row==null) {
            LayoutInflater inflater=getLayoutInflater();

            row=inflater.inflate(R.layout.filterlist_row, parent, false);
            holder = new FilterViewHolder();
            holder.filterCheckBox = (CheckBox)row.findViewById(R.id.filter_checkbox);
            holder.filterCheckBox.setTypeface(fontFace);

            row.setTag(holder);
        } else {
            //holder = (View) row;
            holder = (FilterViewHolder) row.getTag();

            /* When a listview recycles views , it recycles its present state as well as listeners attached to it.
             * if the checkbox was checked and has a onCheckedChangeListener set, both will remain a part of 
             * recycled view based on position. So it is our responsibility to reset all states and remove
             *  previous listeners.
             *  The listener was removed as below:-
             */
            holder.filterCheckBox.setOnCheckedChangeListener(null);

        }

            holder.filterCheckBox.setText(areaList.get(position));
            holder.filterCheckBox.setFocusable(false);
            holder.filterCheckBox.setChecked(positionArray.get(position));
            holder.filterCheckBox.setText(areaList.get(position));

            holder.filterCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {

                @Override
                public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                    // TODO Auto-generated method stub
                    if (isChecked) {
                        //change state of concern item in 'positionArray' array to 'True'
                         positionArray.set(position, true);
                        //add the checked item in to area list which used to filter offers.
                        filterOffersByThisAreaList.add(areaList.get(position));

                    } else {
                       //change state of concern item in 'positionArray' array to 'True'
                         positionArray.set(position, true);
                        //remove the unchecked item in to area list which used to filter offers.
                        filterOffersByThisAreaList.remove(areaList.get(position));

                    }
                }
            });
        return row;
    }

Answer 1

不要直接在 onCheckedChanged 中使用 position 来设置 CheckBox 的状态，您应该使用 setTag 和 getTag 方法来获取选中项目的位置:

...
holder.filterCheckBox.setTag(position);
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                    // TODO Auto-generated method stub
  int checkPos=Integer.parseInt(buttonView.getTag().toString());
  ....your code here...
}

Answer 2

始终在返回 getView 之前调用 setChecked 并 Uncheck/check 手动调用返回项目内的复选框，这就像您正在重用通过您实现的 getView() 方法传递的 convertView。

单击 android 中的复选框

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