Question

在我的应用程序中, 我将选择要排序的项目。我的问题是如果我检查复选框来排序其它的复选框, 也已经检查过。意思是如果我选择了单项, 两个项目正在检查中。

从 5 项开始, 它被正确检查, 并在顺序页面中显示。从 6 项中, 如果我选择它, 它会在顺序页面中显示其它项目。

这是我的名单代码:

    public View getView(final int position, View convertView, ViewGroup parent) {
        View view = convertView;
        final ViewHolder viewHolder;
        if (view == null) {         
              view = inflater.inflate(R.layout.appetiserlistview, null);
            viewHolder = new ViewHolder();
            viewHolder.image=(ImageView)view.findViewById(R.id.appetiserimage);
            viewHolder.text = (TextView) view.findViewById(R.id.appetisertext);
            viewHolder.desc=(TextView)view.findViewById(R.id.appetiserdesc);
            viewHolder.price=(TextView)view.findViewById(R.id.appetiserprice);
            viewHolder.checkbox = (CheckBox) view.findViewById(R.id.bcheck);


            view.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) view.getTag();
        }






        viewHolder.image.setImageBitmap(bmps[position]);

        viewHolder.price.setText(prices[position]);
        viewHolder.desc.setText(descs[position]);
        viewHolder.checkbox.setTag(itemnames[position]);
        ViewHolder holder = (ViewHolder) view.getTag();
        holder.text.setText(itemnames[position]);
        viewHolder.checkbox.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                if (((CheckBox) v).isChecked())
                {
                    arr.add(itemnames[position]);
                    itemprice.add(prices[position]);
                       image.add(bmps[position]);


                }

Answer 1

您必须保存您所有复选框的状态, 并相应恢复这些状态。这是我已贴过的一个例子。如果您遇到任何问题, 请告诉我。我将尽力帮助您。

检查此链接

< a href=> https://stackoverflow.com/ questions/10190083/ how-to-taminment- a- button- thatt-gets-all-checkboxs-state-and-adds-value-f-c/101369#101969_101369> 如何执行一个按钮, 该按钮将所有复选框状态都接收到状态, 并将检查过的项目添加到数组列表中?

Answer 2

Its a basic property of ListView not only checkboxes but also Edittext and other input controls will have the same value as the one have what actually happen in list view

正在显示的项目仅被创建。

When you scroll them new items are created so as per previous display state the one of check box get checked for current display. Solution 1: Create a list in which store the states of all checkboxes(or list items) and at calling of bindview() method check the status of check box and according to the list check and uncheck them also create checkbox listener so that oncheckchange event change the state of checkbox(or listitem) in list so this way you can get the solution

<强力 > 解决方案2:

如果您只需要一个复选框,您就可以使用列表视图属性来选择多个项目

<强>编辑1:

设置此属性

android:choiceMode="multipleChoice"

用于您的 2

Follow the Link and also See this Property

Answer 3

根据列表视图的行为, 它不会保存项目状态, 因为它们在滚动时间上插入了滚动时间, 所以您应该使用一系列布林值来保持复选框的状态,

public class FriendListAdapter extends BaseAdapter {
    private LayoutInflater mInflater;
    private boolean isCheck[] = new boolean[Data.fbFriendList.size()];
 // Data.fbFriendList is arraylist contains data
    public FriendListAdapter() {

        mInflater = LayoutInflater.from(mContext);
        Arrays.fill(isCheck, Boolean.FALSE);
    }

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

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

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

    @Override
    public View getView(final int position, View convertView,
            ViewGroup parent) {
        View hView = convertView;
        if (convertView == null) {
            hView = mInflater.inflate(R.layout.friend_item, null);
            ViewHolder holder = new ViewHolder();
            holder.profile_pic = (ImageView) hView
                    .findViewById(R.id.profile_pic);
            holder.name = (TextView) hView.findViewById(R.id.name);
            holder.checkBox = (CheckBox) hView.findViewById(R.id.checkBox);
            hView.setTag(holder);
        }

        final ViewHolder holder = (ViewHolder) hView.getTag();

        if (isCheck[position]) {
            holder.checkBox.setChecked(true);
        } else {
            holder.checkBox.setChecked(false);
        }

        try {
            holder.profile_pic.setImageBitmap(Utility.model.getImage(
                    Data.fbFriendList.get(position).getFbFriendFBid(),
                    Data.fbFriendList.get(position)
                            .getFbFriendThumbImgUrl()));
            holder.name.setText(Data.fbFriendList.get(position)
                    .getFbFriendName());

        } catch (Exception e) {
            e.printStackTrace();
            holder.name.setText("");
        }

        holder.checkBox.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (holder.checkBox.isChecked())
                    isCheck[position] = true;
                else
                    isCheck[position] = false;
            }
        });

        return hView;
    }

}

class ViewHolder {
    ImageView profile_pic;
    TextView name;
    CheckBox checkBox;
}

这里选中是一个用于适应器类中的布尔数组, 用于持续状态的复选框和 Data. fbFrienddList 是一个数组列表。

友情链接