ListView动态数据行在滚动时更改

I want to change the text and background color of the text view from "Not Uploaded" to "Uploading..." and want to change the background color as well. But when i click on the upload button it change the color and text of the selected view but it also make same changes to the last visible item+1. When I scroll through the list the change effect keep on shifting on other views as well.

我想将文本视图的文本和背景颜色从“Not Uploaded”更改为“Uploading ...”,并且还想要更改背景颜色。但是当我点击上传按钮时,它会更改所选视图的颜色和文本,但它也会对最后一个可见项+ 1进行相同的更改。当我滚动列表时,更改效果也会继续转移到其他视图上。

Here is the code for my custom adapter getview function

这是我的自定义适配器getview函数的代码

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

    View v = null;

    if(convertView == null)
    {
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v=inflater.inflate(R.layout.fileview,parent,false);
        TextView tv = (TextView) v.findViewById(R.id.tv_file);
        TextView tv_date = (TextView) v.findViewById(R.id.tv_fileDate);
        TextView tvFileSize = (TextView) v.findViewById(R.id.tvFileSize);
        TextView tvFileStatus = (TextView) v.findViewById(R.id.tvUploadStatus);
        ImageView _img = (ImageView) v.findViewById(R.id.iv_file);
        ImageView btnTrash = (ImageView) v.findViewById(R.id.btnTrash);
        ImageView btnEdit = (ImageView) v.findViewById(R.id.btnEdit);
        ImageView btnUpload = (ImageView) v.findViewById(R.id.btnUpload);

        btnTrash.setOnClickListener(new myclickListener(context,files[position],position));
        btnEdit.setOnClickListener(new myclickListener(context,files[position],position));
        btnUpload.setOnClickListener(new myclickListener(context,files[position],position));



        int index = files[position].lastIndexOf(".");
        String file_extention = files[position].substring(index+1,files[position].length());
        file_extention=file_extention.toLowerCase();

        if(file_extention.equals("png"))
        {
            _img.setImageResource(images[0]);
        }
        else if(file_extention.equals("txt"))
        {
            _img.setImageResource(images[1]);
        }

        if(appPreferences.getUploadValue(files[position]).equals(statusUploaded))
        {
            tvFileStatus.setTextColor(Color.WHITE);
            tvFileStatus.setText(statusUploaded);
            tvFileStatus.setBackgroundResource(R.drawable.fileview2);
        }
        else if (appPreferences.getUploadValue(files[position]).equals(statusUploading)) {
            tvFileStatus.setTextColor(Color.BLACK);
            tvFileStatus.setText(statusUploading);
            tvFileStatus.setBackgroundResource(R.drawable.fileview3);
        }



        tv.setText(files[position]);
        tvFileSize.setText("Size:" + file_sizes[position]);
        tv_date.setText(file_dates[position]);

    }
    else
    {
        v=convertView;
    }
    return v;
}

1 个解决方案

#1

Always use ViewHolder when implementing ListView. Refer this tutorial

实现ListView时始终使用ViewHolder。请参阅本教程