如何在自定义ListView中使用Button OnClick和View Holder

Question

我需要一些帮助,我正在使用一个视图来从动态arrayadapter中显示.

我有列表视图.

每行包含;

• 标题(Textview),
• 子标题(TextView),
• 进度条
• 下载按钮(按钮).

我想在单击"下载"按钮时显示进度条并隐藏"下载"按钮.单击第一行中的下载按钮时,将显示第一个进度条,但也显示第8个进度条.

这是我的代码.我做错了什么？

    public class TabInComingAdaptor extends BaseAdapter {

    public static class ViewHolder {
        TextView title;
        TextView desc;
        Button DownloadButton;
        ProgressBar pB;
    }

    private ArrayList<rowObject> data;
    private LayoutInflater inflater = null;
    private Application ap;
    // final private Activity currentActivity;
    Button progressButton1;
    int CurrentUser;

    public TabInComingAdaptor(Activity activity, Application application,
            ArrayList<rowObject> GelenFakslar) {
        // currentActivity = activity;
        ap = application;
        data = GelenFakslar;
        inflater = (LayoutInflater) ap
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    public int getCount() {
        return data.size();
    }

    public Object getItem(int position) {
        return position;
    }

    public long getItemId(int position) {
        return position;
    }

    public View getView(final int position, View vi, ViewGroup parent) {
        ViewHolder viewHolder;
        if (vi == null) {
            vi = inflater.inflate(R.layout.tab_incoming_row, parent, false);
            viewHolder = new ViewHolder();
            viewHolder.title = (TextView) vi.findViewById(R.id.RowTitle);
            viewHolder.desc = (TextView) vi.findViewById(R.id.RowDesc);
            viewHolder.DownloadButton = (Button) vi
                    .findViewById(R.id.RowDownloadButton);
            viewHolder.pB = (ProgressBar) vi
                    .findViewById(R.id.RowDownloadProgress);

            viewHolder.DownloadButton.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    LinearLayout vwParentRow = (LinearLayout) v.getParent();
                    v.setVisibility(View.GONE);
                    ProgressBar zxcv = (ProgressBar) vwParentRow.getChildAt(0);
                    zxcv.setVisibility(View.VISIBLE);
                    vwParentRow.refreshDrawableState();
                }
            });
            vi.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) vi.getTag();
        }

        viewHolder.title.setText(data.get(position).getBaslik());
        viewHolder.desc.setText(data.get(position).getTarih());

        return vi;
    }
}

Answer 1

那是我的解决方案.再次感谢@waqaslam和@ SweetWisherツ的帮助.

行对象(我有所有变量的getter和setter):

public class rowObject {
    int Rowid;
    String title;
    String desc;
    String FileUrl;
    String FilePath;
    int ButtonClicked;
}

GetView方法:

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

    if (vi == null) {
        vi = inflater.inflate(R.layout.tab_incoming_row, parent, false);
        viewHolder = new ViewHolder();
        viewHolder.title = (TextView) vi.findViewById(R.id.RowTitle);
        viewHolder.desc = (TextView) vi.findViewById(R.id.RowDesc);
        viewHolder.DownloadButton = (Button) vi
                .findViewById(R.id.RowDownloadButton);
        viewHolder.pB = (ProgressBar) vi
                .findViewById(R.id.RowDownloadProgress);
        vi.setTag(viewHolder);
    } else {
        viewHolder = (ViewHolder) vi.getTag();
    }

    viewHolder.title.setText(data.get(position).getBaslik());
    viewHolder.desc.setText(data.get(position).getTarih());
    viewHolder.DownloadButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            data.get(position).setButtonClicked(1);
            new DownloadTask(currentActivity, position).execute();
        }
    });

    if (data.get(position).getButtonClicked() == 1) {
        viewHolder.DownloadButton.setVisibility(View.GONE);
        viewHolder.pB.setVisibility(View.VISIBLE);
    } else {
        viewHolder.DownloadButton.setVisibility(View.VISIBLE);
        viewHolder.pB.setVisibility(View.GONE);
    }
    return vi;
}

然后我将使用像这篇文章这样的 AsyncTask