安卓：使用动态Sublayout绑定布局（ViewHolder＆安培; SubViewHolder） [英] Android: Binding Layout with Dynamic Sublayout (ViewHolder & SubViewHolder)
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问题描述
我解析JSON从服务器到Android和存储在SQLite的数据中，我有两个表新闻和 news_attachment 。
我已经做了code在列表中显示新闻和 news_attachment ，但现在我想显示多个附件一的消息。
下面code显示特定的消息last_attachment。 我想显示所有连接使用自定义布局，这将是在父视图自动解决。
NewsAdapter.java
公共类NewsAdapter扩展SimpleCursorAdapter {
DatabaseHelper dbHelper;
LayoutInflater充气;
公共NewsAdapter（上下文的背景下，INT布局，光标C，
的String []从，INT []键，诠释标志）{
超（背景下，布局，C，从到，旗）;
充气= LayoutInflater.from（上下文）;
dbHelper =新DatabaseHelper（上下文）;
dbHelper.open（）;
}
@覆盖
公共无效bindView（查看convertView，上下文的背景下，光标光标）{
ViewHolder支架=（ViewHolder）convertView.getTag（）;
如果（cursor.isNull（cursor.getColumnIndex（DatabaseHelper.NEWS_TITLE）））{
holder.newsTitleText.setVisibility（View.GONE）;
} 其他 {
holder.newsTitleText.setVisibility（View.VISIBLE）;
holder.newsTitleText.setText（+ cursor.getString（cursor.getColumnIndex（DatabaseHelper.NEWS_TITLE）））;
}
如果（cursor.isNull（cursor.getColumnIndex（DatabaseHelper.NEWS_TEXT）））{
holder.newsText.setVisibility（View.GONE）;
} 其他 {
holder.newsText.setVisibility（View.VISIBLE）;
串newsText = cursor.getString（cursor.getColumnIndex（DatabaseHelper.NEWS_TEXT））;
newsText = Html.fromHtml（newsText）的ToString（）;
holder.newsText.setText（newsText）;
}
/ ************
*获取子光标...
* /
光标newsAttachmentCursor;
INT NewSID的;
/ **
*设置的news_Attachment表值...
* /
NewSID的= cursor.getInt（cursor.getColumnIndex（DatabaseHelper.NEWS_SERVER_ID））;
newsAttachmentCursor = dbHelper.getNewsAttachment（NewSID的）;
/ **
*显示新闻附件
* /
如果（newsAttachmentCursor.getCount（）大于0＆安培;＆安培;！newsAttachmentCursor =空）{
newsAttachmentCursor.moveToFirst（）;
/ **
*显示NEWS_AT_NAME
* /
如果（newsAttachmentCursor.isNull（newsAttachmentCursor.getColumnIndex（DatabaseHelper.NEWS_AT_NAME）））{
holder.newsAttachment.setVisibility（View.GONE）;
} 其他{
holder.newsAttachment.setVisibility（View.VISIBLE）;
/ **
*显示如果附件有图片....
* /
字符串文件名= newsAttachmentCursor.getString（newsAttachmentCursor.getColumnIndex（DatabaseHelper.NEWS_AT_NAME））;
串fileUrl = newsAttachmentCursor.getString（newsAttachmentCursor.getColumnIndex（DatabaseHelper.NEWS_AT_URL））;
串tempLowerUrl = fileUrl.toLowerCase（）;
如果（tempLowerUrl = NULL和放大器;＆安培;！（tempLowerUrl.contains（PNG）|| tempLowerUrl.contains（JPEG）|| tempLowerUrl.contains（JPG）|| tempLowerUrl.contains（ttif）| | tempLowerUrl.contains（GIF）））
{
holder.newsAttachment.setVisibility（View.GONE）;
holder.newsImage.setVisibility（View.VISIBLE）;
Log.d（oopscv2，文件：+ fileUrl）;
新AQuery(mContext).id(holder.newsImage).image(newsAttachmentCursor.getString(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_URL)),真正的，真实的，0，R.drawable.no_image，空，AQuery.FADE_IN）;
} 其他 {
holder.newsAttachment.setVisibility（View.VISIBLE）;
holder.newsImage.setVisibility（View.GONE）;
holder.newsAttachment.setText（文件名）;
}
}
} 其他 {
holder.newsAttachment.setVisibility（View.GONE）;
holder.newsImage.setVisibility（View.GONE）;
}
}
@覆盖
公共查看NewView的（上下文的背景下，光标光标的ViewGroup父）{
视图V = inflater.inflate（R.layout.frag_news_row，父母，假）;
v.setTag（新ViewHolder（ⅴ））;
返回伏;
}
私有静态类ViewHolder
{
TextView的newsTitleText;
TextView的newsText;
ImageView的newsImage;
TextView的newsAttachment;
公共ViewHolder（查看视图）{
// TODO自动生成构造函数存根
newsTitleText =（TextView中）view.findViewById（R.id.newsTitleText）;
newsText =（TextView中）view.findViewById（R.id.newsText）;
newsImage =（ImageView的）view.findViewById（R.id.newsImage）;
newsAttachment =（TextView中）view.findViewById（R.id.newsAttachment）;
}
}
}
电流输出：
我要动态输出像（临时附件4）：
我觉得动态视图是对这项有益的，但我不知道如何动态地添加视图与的onClick监听器的所有附件的格式。
怎么样了其可能的。？
解决上述问题后更新问题：
现在我有以下更新适配器：
NewsNewAdapter.java
公共类NewsAdapterNew扩展SimpleCursorAdapter {
DatabaseHelper dbHelper;
LayoutInflater充气;
ViewHolder持有人;
ViewHolder.SubViewHolder subHolder;
字符串DIRPATH = android.os.Environment.getExternalStorageDirectory（）+文件分割符+TEMP+文件分割符;
公共NewsAdapterNew（上下文的背景下，INT布局，光标C，
的String []从，INT []键，诠释标志）{
超（背景下，布局，C，从到，旗）;
充气= LayoutInflater.from（上下文）;
dbHelper =新DatabaseHelper（上下文）;
dbHelper.open（）;
}
@覆盖
公共无效bindView（查看convertView，最终上下文的背景下，光标光标）{
支架=（ViewHolder）convertView.getTag（）;
如果（cursor.isNull（cursor.getColumnIndex（DatabaseHelper.NEWS_TITLE）））{
holder.newsTitleText.setVisibility（View.GONE）;
} 其他 {
holder.newsTitleText.setVisibility（View.VISIBLE）;
holder.newsTitleText.setText（+ cursor.getString（cursor.getColumnIndex（DatabaseHelper.NEWS_TITLE）））;
}
如果（cursor.isNull（cursor.getColumnIndex（DatabaseHelper.NEWS_TEXT）））{
holder.newsText.setVisibility（View.GONE）;
} 其他 {
holder.newsText.setVisibility（View.VISIBLE）;
串newsText = cursor.getString（cursor.getColumnIndex（DatabaseHelper.NEWS_TEXT））;
newsText = Html.fromHtml（newsText）的ToString（）;
holder.newsText.setText（newsText）;
}
/ ************
*获取子光标...
* /
光标newsAttachmentCursor;
INT NewSID的;
/ **
*设置的news_Attachment表值...
* /
NewSID的= cursor.getInt（cursor.getColumnIndex（DatabaseHelper.NEWS_SERVER_ID））;
newsAttachmentCursor = dbHelper.getNewsAttachment（NewSID的）;
Log.d（TAG，newsAttachmentCursor.getCount（）：+ newsAttachmentCursor.getCount（））;
/ **
*显示新闻附件
* /
如果（newsAttachmentCursor.getCount（）大于0＆安培;＆安培;！newsAttachmentCursor =空）{
//newsAttachmentCursor.moveToFirst（）;
/ **
*显示NEWS_AT_NAME
* /
holder.layoutAttachment.removeAllViews（）;
newsAttachmentCursor.moveToFirst（）;
做 {
查看viewAttachement = LayoutInflater.from（mContext）.inflate（R.layout.attachment_layout，NULL）;
subHolder =新com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder（viewAttachement）;
subHolder.newsImage.setTag（subHolder）;
subHolder.newsImageDownload.setTag（subHolder）;
subHolder.newsAttachmentFileName.setTag（subHolder）;
/ **
*显示如果附件有图片....
* /
subHolder.fileName = newsAttachmentCursor.getString（newsAttachmentCursor.getColumnIndex（DatabaseHelper.NEWS_AT_NAME））;
subHolder.fileUrl = newsAttachmentCursor.isNull（newsAttachmentCursor.getColumnIndex（DatabaseHelper.NEWS_AT_URL））？ ：newsAttachmentCursor.getString（newsAttachmentCursor.getColumnIndex（DatabaseHelper.NEWS_AT_URL））;
subHolder.newsAttachmentFileName.setText（subHolder.fileName）;
串tempExt = subHolder.fileUrl.contains（。）？ subHolder.fileUrl.substring（。subHolder.fileUrl.lastIndexOf（））与toLowerCase（）：，;。
Log.d（TAG，临时扩展名：+ tempExt）;
如果（！tempExt.isEmpty（））{
myfile文件=新的文件（DIRPATH + subHolder.fileName）;
如果（myFile.exists（））{
subHolder.newsImageDownload.setVisibility（View.GONE）;
} 其他 {
subHolder.newsImageDownload.setVisibility（View.VISIBLE）;
}
如果（tempExt = NULL和放大器;！＆安培; tempExt.equals（MP4）||（tempExt.equals（）|| tempExt.equals（）|| tempExt.equals（JPEG，JPG。 ttif）|| tempExt.equals（GIF）|| tempExt.equals（png格式）|| tempExt.equals（PDF）|| tempExt.equals（DOCX）|| tempExt .equals（DOC）|| tempExt.equals（XLS）|| tempExt.equals（XLSX）|| tempExt.equals（PPT）|| tempExt.equals（。PPTX ）|| tempExt.equals（TXT）|| tempExt.equals（拉链）））
{
subHolder.newsImage.setVisibility（View.VISIBLE）;
如果（tempExt.equals（PDF））{
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（R.drawable.ic_pdf）;
}否则，如果（tempExt.equals（DOC）|| tempExt.equals（DOCX））{
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（R.drawable.ic_word）;
}否则，如果（tempExt.equals（XLS）|| tempExt.equals（XLSX））{
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（R.drawable.ic_excel）;
}否则，如果（tempExt.equals（PPT）|| tempExt.equals（PPTX））{
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（R.drawable.ic_ppt）;
}否则，如果（tempExt.equals（TXT））{
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（R.drawable.ic_text）;
}否则，如果（tempExt.equals（拉链））{
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（R.drawable.ic_zip）;
}否则，如果（tempExt.equals（MP4））{
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（R.drawable.ic_video）;
} 其他 {
subHolder.newsImage.setVisibility（View.VISIBLE）;
新AQuery（mContext）.ID（subHolder.newsImage）在图像配（subHolder.fileUrl，真正的，真实的，0，R.drawable.no_image，空，AQuery.FADE_IN）;
}
} 其他 {
subHolder.newsImage.setVisibility（View.GONE）;
subHolder.newsImageDownload.setVisibility（View.GONE）;
}
/ ***
*
* /
subHolder.newsImageDownload.setOnClickListener（新OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{
// TODO自动生成方法存根
com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder tempHolder =（（com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder）v.getTag（））;
//Toast.makeText(mContext，tempHolder.fileName.toString（）+正在下载...，Toast.LENGTH_LONG）.show（）;
如果（InternetConnection.checkConnection（上下文））{
tempHolder.newsImageDownload.setVisibility（View.GONE）;
tempHolder.pBar.setVisibility（View.VISIBLE）;
新DownloadFileAsync（）执行（tempHolder）;
} 其他 {
tempHolder.newsImageDownload.setVisibility（View.VISIBLE）;
tempHolder.pBar.setVisibility（View.GONE）;
AlertDialogManager.showAlertDialog（背景下，下载失败，下载无法完成，请稍后重试。，假）;
}
}
}）;
subHolder.newsImage.setOnClickListener（新OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{
// TODO自动生成方法存根
尝试 {
com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder tempHolder =（（com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder）v.getTag（））;
Toast.makeText（mContext，下载：+ tempHolder.fileName.toString（），Toast.LENGTH_LONG）.show（）;
myfile文件=新的文件（DIRPATH + tempHolder.fileName.toString（））;
FileOpen.openFile（mContext，MYFILE）;
}赶上（例外五）{
// TODO自动生成的catch块
Log.d（TAG，错误而开口道：+ e.getLocalizedMessage（））;
}
}
}）;
/ **添加新闻附件布局在父母的LinearLayout ** /
holder.layoutAttachment.addView（viewAttachement）;
}
viewAttachement.setTag（subHolder）;
}而（newsAttachmentCursor.moveToNext（））;
} 其他 {
holder.layoutAttachment.setVisibility（View.GONE）;
}
}
@覆盖
公共查看NewView的（上下文的背景下，光标光标的ViewGroup父）{
视图V = inflater.inflate（R.layout.frag_news_row，父母，假）;
v.setTag（新ViewHolder（ⅴ））;
返回伏;
}
私有静态类ViewHolder
{
TextView的newsTitleText;
TextView的newsText;
的LinearLayout layoutAttachment;
静态类SubViewHolder {
ImageView的newsImage，newsImageDownload;
TextView的newsAttachmentFileName;
进度PBAR;
字符串fileUrl;
字符串文件名;
公共SubViewHolder（查看子视图）{
// TODO自动生成构造函数存根
newsImage =（ImageView的）subView.findViewById（R.id.newsImage）;
newsImageDownload =（ImageView的）subView.findViewById（R.id.newsImageDownload）;
PBAR =（进度）subView.findViewById（R.id.newsProgressBar）;
newsAttachmentFileName =（TextView中）subView.findViewById（R.id.newsAttachment）;
}
}
公共ViewHolder（查看视图）{
// TODO自动生成构造函数存根
newsTitleText =（TextView中）view.findViewById（R.id.newsTitleText）;
newsText =（TextView中）view.findViewById（R.id.newsText）;
layoutAttachment =（的LinearLayout）view.findViewById（R.id.linear_news_row_attachment）;
}
}
}
frag_new_row.xml
＆LT; LinearLayout中的xmlns：机器人=http://schemas.android.com/apk/res/android
机器人：ID =@ + ID / newsLayout
机器人：layout_width =match_parent
机器人：layout_height =WRAP_CONTENT
机器人：layout_margin =5DP
机器人：背景=@可绘制/ bg_white_shadow
机器人：方向=垂直
机器人：填充=10dp＆GT;
＆LT;的TextView
机器人：ID =@ + ID / newsTitleText
机器人：layout_width =match_parent
机器人：layout_height =WRAP_CONTENT
机器人：layout_marginBottom =3DP
机器人：文本=新闻从
机器人：文字颜色=@机器人：彩色/黑白
机器人：TEXTSIZE =@扪/ common_title_textview
机器人：TEXTSTYLE =黑体/＆GT;
＆LT;的TextView
机器人：ID =@ + ID / newsText
机器人：layout_width =match_parent
机器人：layout_height =WRAP_CONTENT
机器人：文本=新闻文本新闻文本
机器人：文字颜色=@机器人：彩色/黑白
机器人：TEXTSIZE =@扪/ common_fontsize/＆GT;
＆LT;的LinearLayout
机器人：ID =@ + ID / linear_news_row_attachment
机器人：layout_width =FILL_PARENT
机器人：layout_height =FILL_PARENT
机器人：方向=垂直＆GT;
＆LT; / LinearLayout中＆GT;
＆LT; / LinearLayout中＆GT;
问题：
虽然有时滚动新闻每人将空白全部财经新闻附件。我觉得这个问题发生在适配器，绑定的看法，但我不能找到。
您将更多的通过下面的图像理解这一点。
输出之前滚动：
输出滚动后：
是我的适配器code是错的？什么错误，我在适配器都做了什么？
您的帮助将是AP preciated。
感谢和放大器;问候，
PRATIK
解决方案
要实现自己的目标最简单的方法就是以编程方式添加查看每个附件。 你必须这样做水木清华这样的： 使holder.newsAttachments - LinearLayout中，例如：
然后在您的bindView方式：
holder.newsAttachment.removeAllViews（）;如果存在//删除意见
而（newsAttachmentCursor.moveToNext（））{
查看查看= LayoutInflater.from（上下文）.inflate（R.layout.layout_for_attachment，NULL）;
//填写看法
字符串文件名= newsAttachmentCursor.getString（newsAttachmentCursor.getColumnIndex（DatabaseHelper.NEWS_AT_NAME））;
view.setTag（文件名）; //添加为标签的东西，你所需要的内部onCLickListener
（（TextView中）view.findViewById（R.id.attachment_view_name））的setText（全名）。
holder.newsAttachment.addView（视图）;
view.setOnClickListener（新OnClickListener（）{
@覆盖
无效的onClick（视图v）{
字符串文件名=（字符串）v.getTag（）;
//做你想要的文件名，或者任何你所添加的内容进行标记。
}
}）;
}
这是唯一的例子，但是这个想法会工作正常，少量附件。
I am parsing JSON from server to Android and storing data in SQLite in which i have two tables news and news_attachment.
I have done code for displaying news and news_attachment in list but now i want to display multiple attachment for one news.
The following code displaying last_attachment of the particular news. I want to display all attachment with Custom Layout which will be settle automatically in parent view.
NewsAdapter.java
public class NewsAdapter extends SimpleCursorAdapter {
DatabaseHelper dbHelper;
LayoutInflater inflater;
public NewsAdapter(Context context, int layout, Cursor c,
String[] from, int[] to, int flags) {
super(context, layout, c, from, to, flags);
inflater = LayoutInflater.from(context);
dbHelper = new DatabaseHelper(context);
dbHelper.open();
}
@Override
public void bindView(View convertView, Context context, Cursor cursor) {
ViewHolder holder = (ViewHolder) convertView.getTag();
if(cursor.isNull(cursor.getColumnIndex(DatabaseHelper.NEWS_TITLE))) {
holder.newsTitleText.setVisibility(View.GONE);
} else {
holder.newsTitleText.setVisibility(View.VISIBLE);
holder.newsTitleText.setText(""+cursor.getString(cursor.getColumnIndex(DatabaseHelper.NEWS_TITLE)));
}
if(cursor.isNull(cursor.getColumnIndex(DatabaseHelper.NEWS_TEXT))) {
holder.newsText.setVisibility(View.GONE);
} else {
holder.newsText.setVisibility(View.VISIBLE);
String newsText = cursor.getString(cursor.getColumnIndex(DatabaseHelper.NEWS_TEXT));
newsText = Html.fromHtml(newsText).toString();
holder.newsText.setText(newsText);
}
/***************************
* Getting Child Cursor...
*/
Cursor newsAttachmentCursor;
int newsId;
/**
* Setting up values of news_Attachment Table...
*/
newsId = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.NEWS_SERVER_ID));
newsAttachmentCursor = dbHelper.getNewsAttachment(newsId);
/**
* Displaying news Attachment
*/
if(newsAttachmentCursor.getCount() > 0 && newsAttachmentCursor != null){
newsAttachmentCursor.moveToFirst();
/**
* Displaying NEWS_AT_NAME
*/
if(newsAttachmentCursor.isNull(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_NAME))) {
holder.newsAttachment.setVisibility(View.GONE);
} else{
holder.newsAttachment.setVisibility(View.VISIBLE);
/**
* Displaying If attachment has Images....
*/
String fileName = newsAttachmentCursor.getString(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_NAME));
String fileUrl = newsAttachmentCursor.getString(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_URL));
String tempLowerUrl = fileUrl.toLowerCase();
if(tempLowerUrl != null && (tempLowerUrl.contains("png") || tempLowerUrl.contains("jpeg") || tempLowerUrl.contains("jpg") || tempLowerUrl.contains("ttif") || tempLowerUrl.contains("gif")))
{
holder.newsAttachment.setVisibility(View.GONE);
holder.newsImage.setVisibility(View.VISIBLE);
Log.d("oopscv2", "File : "+fileUrl);
new AQuery(mContext).id(holder.newsImage).image(newsAttachmentCursor.getString(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_URL)), true, true, 0, R.drawable.no_image, null, AQuery.FADE_IN);
} else {
holder.newsAttachment.setVisibility(View.VISIBLE);
holder.newsImage.setVisibility(View.GONE);
holder.newsAttachment.setText(fileName);
}
}
} else {
holder.newsAttachment.setVisibility(View.GONE);
holder.newsImage.setVisibility(View.GONE);
}
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View v = inflater.inflate(R.layout.frag_news_row, parent, false);
v.setTag(new ViewHolder(v));
return v;
}
private static class ViewHolder
{
TextView newsTitleText;
TextView newsText;
ImageView newsImage;
TextView newsAttachment;
public ViewHolder(View view) {
// TODO Auto-generated constructor stub
newsTitleText = (TextView) view.findViewById(R.id.newsTitleText);
newsText = (TextView) view.findViewById(R.id.newsText);
newsImage = (ImageView) view.findViewById(R.id.newsImage);
newsAttachment = (TextView) view.findViewById(R.id.newsAttachment);
}
}
}
Current Output:
I want dynamic output like (temporary 4 attachment):
I think dynamic view is useful for this but i dont know how to add dynamically view with formatting with onClick listener for all attachment.
Hows its possible.?
Updated Question after solved above question:
Now i have following Updated Adapter:
NewsNewAdapter.java
public class NewsAdapterNew extends SimpleCursorAdapter {
DatabaseHelper dbHelper;
LayoutInflater inflater;
ViewHolder holder;
ViewHolder.SubViewHolder subHolder;
String DIRPATH = android.os.Environment.getExternalStorageDirectory() + File.separator + "TEMP" + File.separator;
public NewsAdapterNew(Context context, int layout, Cursor c,
String[] from, int[] to, int flags) {
super(context, layout, c, from, to, flags);
inflater = LayoutInflater.from(context);
dbHelper = new DatabaseHelper(context);
dbHelper.open();
}
@Override
public void bindView(View convertView, final Context context, Cursor cursor) {
holder = (ViewHolder) convertView.getTag();
if(cursor.isNull(cursor.getColumnIndex(DatabaseHelper.NEWS_TITLE))) {
holder.newsTitleText.setVisibility(View.GONE);
} else {
holder.newsTitleText.setVisibility(View.VISIBLE);
holder.newsTitleText.setText(""+cursor.getString(cursor.getColumnIndex(DatabaseHelper.NEWS_TITLE)));
}
if(cursor.isNull(cursor.getColumnIndex(DatabaseHelper.NEWS_TEXT))) {
holder.newsText.setVisibility(View.GONE);
} else {
holder.newsText.setVisibility(View.VISIBLE);
String newsText = cursor.getString(cursor.getColumnIndex(DatabaseHelper.NEWS_TEXT));
newsText = Html.fromHtml(newsText).toString();
holder.newsText.setText(newsText);
}
/***************************
* Getting Child Cursor...
*/
Cursor newsAttachmentCursor;
int newsId;
/**
* Setting up values of news_Attachment Table...
*/
newsId = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.NEWS_SERVER_ID));
newsAttachmentCursor = dbHelper.getNewsAttachment(newsId);
Log.d(TAG, "newsAttachmentCursor.getCount() : " +newsAttachmentCursor.getCount());
/**
* Displaying news Attachment
*/
if(newsAttachmentCursor.getCount() > 0 && newsAttachmentCursor != null){
//newsAttachmentCursor.moveToFirst();
/**
* Displaying NEWS_AT_NAME
*/
holder.layoutAttachment.removeAllViews();
newsAttachmentCursor.moveToFirst();
do {
View viewAttachement = LayoutInflater.from(mContext).inflate(R.layout.attachment_layout, null);
subHolder = new com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder(viewAttachement);
subHolder.newsImage.setTag(subHolder);
subHolder.newsImageDownload.setTag(subHolder);
subHolder.newsAttachmentFileName.setTag(subHolder);
/**
* Displaying If attachment has Images....
*/
subHolder.fileName = newsAttachmentCursor.getString(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_NAME));
subHolder.fileUrl = newsAttachmentCursor.isNull(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_URL)) ? "" : newsAttachmentCursor.getString(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_URL));
subHolder.newsAttachmentFileName.setText(subHolder.fileName);
String tempExt = subHolder.fileUrl.contains(".") ? subHolder.fileUrl.substring(subHolder.fileUrl.lastIndexOf(".")).toLowerCase() : "";
Log.d(TAG, "Temp Extension : "+tempExt);
if(!tempExt.isEmpty()) {
File myFile = new File(DIRPATH + subHolder.fileName);
if(myFile.exists()) {
subHolder.newsImageDownload.setVisibility(View.GONE);
} else {
subHolder.newsImageDownload.setVisibility(View.VISIBLE);
}
if(tempExt != null && tempExt.equals(".mp4") || (tempExt.equals(".jpeg") || tempExt.equals(".jpg") || tempExt.equals(".ttif") || tempExt.equals(".gif") || tempExt.equals(".png")|| tempExt.equals(".pdf")|| tempExt.equals(".docx")|| tempExt.equals(".doc")|| tempExt.equals(".xls")|| tempExt.equals(".xlsx")|| tempExt.equals(".ppt")|| tempExt.equals(".pptx")|| tempExt.equals(".txt")|| tempExt.equals(".zip")))
{
subHolder.newsImage.setVisibility(View.VISIBLE);
if(tempExt.equals(".pdf")) {
new AQuery(mContext).id(subHolder.newsImage).image(R.drawable.ic_pdf);
} else if(tempExt.equals(".doc") || tempExt.equals(".docx")) {
new AQuery(mContext).id(subHolder.newsImage).image(R.drawable.ic_word);
} else if(tempExt.equals(".xls") || tempExt.equals(".xlsx")) {
new AQuery(mContext).id(subHolder.newsImage).image(R.drawable.ic_excel);
} else if(tempExt.equals(".ppt") || tempExt.equals(".pptx")) {
new AQuery(mContext).id(subHolder.newsImage).image(R.drawable.ic_ppt);
} else if(tempExt.equals(".txt")) {
new AQuery(mContext).id(subHolder.newsImage).image(R.drawable.ic_text);
} else if(tempExt.equals(".zip")) {
new AQuery(mContext).id(subHolder.newsImage).image(R.drawable.ic_zip);
} else if(tempExt.equals(".mp4")) {
new AQuery(mContext).id(subHolder.newsImage).image(R.drawable.ic_video);
} else {
subHolder.newsImage.setVisibility(View.VISIBLE);
new AQuery(mContext).id(subHolder.newsImage).image(subHolder.fileUrl, true, true, 0, R.drawable.no_image, null, AQuery.FADE_IN);
}
} else {
subHolder.newsImage.setVisibility(View.GONE);
subHolder.newsImageDownload.setVisibility(View.GONE);
}
/***
*
*/
subHolder.newsImageDownload.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder tempHolder = ((com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder)v.getTag());
//Toast.makeText(mContext, tempHolder.fileName.toString() + " is Downloading...", Toast.LENGTH_LONG).show();
if(InternetConnection.checkConnection(context)) {
tempHolder.newsImageDownload.setVisibility(View.GONE);
tempHolder.pBar.setVisibility(View.VISIBLE);
new DownloadFileAsync().execute(tempHolder);
} else {
tempHolder.newsImageDownload.setVisibility(View.VISIBLE);
tempHolder.pBar.setVisibility(View.GONE);
AlertDialogManager.showAlertDialog(context, "Download failed", "The download was unable to complete. Please try again later.", false);
}
}
});
subHolder.newsImage.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
try {
com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder tempHolder = ((com.salesman.adapter.NewsAdapterNew.ViewHolder.SubViewHolder)v.getTag());
Toast.makeText(mContext, "Downloaded : " + tempHolder.fileName.toString(), Toast.LENGTH_LONG).show();
File myFile = new File(DIRPATH + tempHolder.fileName.toString());
FileOpen.openFile(mContext, myFile);
} catch (Exception e) {
// TODO Auto-generated catch block
Log.d(TAG, "Error While Opening : "+e.getLocalizedMessage());
}
}
});
/** Adding News Attachment Layout in Parent LinearLayout **/
holder.layoutAttachment.addView(viewAttachement);
}
viewAttachement.setTag(subHolder);
} while(newsAttachmentCursor.moveToNext());
} else {
holder.layoutAttachment.setVisibility(View.GONE);
}
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View v = inflater.inflate(R.layout.frag_news_row, parent, false);
v.setTag(new ViewHolder(v));
return v;
}
private static class ViewHolder
{
TextView newsTitleText;
TextView newsText;
LinearLayout layoutAttachment;
static class SubViewHolder {
ImageView newsImage,newsImageDownload;
TextView newsAttachmentFileName;
ProgressBar pBar;
String fileUrl;
String fileName;
public SubViewHolder(View subView) {
// TODO Auto-generated constructor stub
newsImage = (ImageView) subView.findViewById(R.id.newsImage);
newsImageDownload =(ImageView) subView.findViewById(R.id.newsImageDownload);
pBar = (ProgressBar) subView.findViewById(R.id.newsProgressBar);
newsAttachmentFileName = (TextView) subView.findViewById(R.id.newsAttachment);
}
}
public ViewHolder(View view) {
// TODO Auto-generated constructor stub
newsTitleText = (TextView) view.findViewById(R.id.newsTitleText);
newsText = (TextView) view.findViewById(R.id.newsText);
layoutAttachment = (LinearLayout) view.findViewById(R.id.linear_news_row_attachment);
}
}
}
frag_new_row.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/newsLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:background="@drawable/bg_white_shadow"
android:orientation="vertical"
android:padding="10dp" >
<TextView
android:id="@+id/newsTitleText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="3dp"
android:text="News From"
android:textColor="@android:color/black"
android:textSize="@dimen/common_title_textview"
android:textStyle="bold" />
<TextView
android:id="@+id/newsText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="News Text News Text"
android:textColor="@android:color/black"
android:textSize="@dimen/common_fontsize" />
<LinearLayout
android:id="@+id/linear_news_row_attachment"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
</LinearLayout>
</LinearLayout>
Problem:
While scrolling sometimes all News Attachment per News going to blank. I think this problem occurring in adapter while binding view but i cant found.
You will more understand this by following images.
Output Before Scrolling:
Output After Scrolling:
Is my adapter code is wrong? What mistake i have done in Adapter?
Your help would be appreciated.
Thanks & Regards,
Pratik
解决方案
The easiest way to achieve your goal is to add view for each attachment programmatically. You must do smth like this: make holder.newsAttachments - linearLayout, for example.
Then in your bindView method:
holder.newsAttachment.removeAllViews(); //remove views if it exists
while (newsAttachmentCursor.moveToNext()) {
View view = LayoutInflater.from(context).inflate(R.layout.layout_for_attachment, null);
//fill view
String fileName = newsAttachmentCursor.getString(newsAttachmentCursor.getColumnIndex(DatabaseHelper.NEWS_AT_NAME));
view.setTag(fileName); // add as tag something, what you need inside onCLickListener
((TextView) view.findViewById(R.id.attachment_view_name)).setText(fullName);
holder.newsAttachment.addView(view);
view.setOnClickListener(new OnClickListener() {
@Override
void onClick(View v) {
String fileName = (String) v.getTag();
//do what you want with file name, or anything what you've added to tag.
}
});
}
It's only example, but this idea will works fine for small amount of attachments.
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