带有复选框的自定义列表视图问题

Question

我正在尝试创建一个带有复选框的列表视图。所以每当我单击一个复选框并将其向下或向上滚动时，这就是问题所在，它会自动检查列表中我没有单击的其他复选框。我已经在此处搜索并阅读了具有相同问题的其他主题，但其中 none 解决了我的问题。

这是我目前所做的。

 public View getView(final int position, View convertView, ViewGroup parent) {


        ViewHolder viewHolder = null;
        if (convertView == null) {
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.row_songs, null, true);

            viewHolder = new ViewHolder();

            viewHolder.checkBox = (CheckBox) convertView.findViewById(R.id.checkBox);
            viewHolder.tvSongName = (TextView) convertView.findViewById(R.id.tvSongName);
            viewHolder.tvSongArtist = (TextView) convertView.findViewById(R.id.tvArtistName);

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


        viewHolder.tvSongName.setText(_songs.get(position).getSongname());
        viewHolder.tvSongArtist.setText(_songs.get(position).getArtistname());
        viewHolder.checkBox.setTag(R.integer.btnplusview, convertView);

        viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

                @Override
                public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                    int getPosition = (Integer) buttonView.getTag(); 
                    _songs.get(getPosition).setSelected(buttonView.isChecked()); 


                    if (_songs.get(getPosition).isSelected()) {
                        _songs.get(getPosition).setSelected(false);
                        Toast.makeText(getApplicationContext(), "position " + position + " " + _songs.get(position).getSongUrl(),
                                Toast.LENGTH_LONG).show();
                        Log.e("URL", _songs.get(position).getSongUrl() + " ");
                    } else {
                        _songs.get(getPosition).setSelected(true);

                    }


                }


            });
            convertView.setTag(R.id.tvSongName, viewHolder.tvSongName);
            convertView.setTag(R.id.tvArtistName, viewHolder.tvSongArtist);
            convertView.setTag(R.id.checkBox, viewHolder.checkBox);

        viewHolder.checkBox.setTag(position);

        viewHolder.checkBox.setChecked(_songs.get(position).isSelected());

        return convertView;
    }

我应该怎么做才能解决这个问题？

提前致谢！

Answer 1

每当你滚动 setOnCheckedChangeListener 时调用

删除 setOnCheckedChangeListener 并实施 setOnClickListener

viewHolder.checkBox.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    if (viewHolder.checkbox.isChecked()) {
                         your logic id true
                    } else {
                        your logic id false
                    }
                }
            });

Answer 2

滚动时调用 setOnCheckedChangeListener。因此，要在获取视图中处理该问题，您需要执行以下操作 -

viewHolder.checkBox.setOnCheckedChangeListener(null);
viewHolder.checkBox.setChecked(_songs.get(position).isSelected());

您首先需要设置 onchecked null 以便在滚动时当视图被填充并且您正在为复选框视图分配值时，您不会调用 onCheckedListener。

然后你需要调用OnCheckedChangeListener

viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                int getPosition = (Integer) buttonView.getTag(); 
              //remove this line from the code. The below one
                _songs.get(getPosition).setSelected(buttonView.isChecked()); 


                if (_songs.get(getPosition).isSelected()) {
                    _songs.get(getPosition).setSelected(false);
                    Toast.makeText(getApplicationContext(), "position " + position + " " + _songs.get(position).getSongUrl(),
                            Toast.LENGTH_LONG).show();
                    Log.e("URL", _songs.get(position).getSongUrl() + " ");
                } else {
                    _songs.get(getPosition).setSelected(true);

                }


            }


        });

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