在我的应用程序中，我在galleryview 中加载数据。如果用户单击galleryview 中的任何项目，我将从适配器类加载数据。我在此加载和显示数据之间保留了一个活动指示器。但活动指示器并没有消失，它一直在显示。
我的活动代码：
gal.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick (AdapterView<?> parent, View v, int position,
long id) {
// TODO Auto-generated method stub
// mDialog = new ProgressDialog(NewsPaperNov28MainGalleryActivity.this);
// mDialog.setMessage("Please wait...");
// mDialog.setCancelable(false);
mDialog= ProgressDialog.show(NewsPaperNov28MainGalleryActivity.this,"Working..", "Please Wait", true,false);
context.getInstance().setAppVariable("sectionurl", adapter.sectionurl[position]);
Thread thread = new Thread();
thread.start();
// ListView list=(ListView)findViewById(R.id.list);
// listadapter = new ListViewwithimageAdapter(this);
// list.setAdapter(listadapter);
}
});
list.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id)
{
// TODO Auto-generated method stub
context.getInstance().setAppVariable("storyurl", listadapter.url[position]);
Intent in = new Intent(getApplicationContext(), NewsDescription.class);
startActivity(in);
}
});
}
@Override
public void run() {
// TODO Auto-generated method stub
// context.getInstance().setAppVariable("sectionurl", adapter.sectionurl[position]);
System.out.println("inside run");
list=(ListView)findViewById(R.id.list);
listadapter = new ListViewwithimageAdapter(this);
System.out.println("B4 handle");
handler.sendEmptyMessage(0);
}
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
System.out.println("Inside handler");
mDialog.dismiss();
list.setAdapter(listadapter);
}
};
我的 ListViewwithimageAdapter 类：
public class ListViewwithimageAdapter extends BaseAdapter
{
private static Context contxt;
final String URL = "http://xxxxxxx/xml/stories/"+rgd.xml;
String[] kickerimage = {};//new String[50];
ListViewwithimageAdapter(Context conxt)
{
this.contxt=conxt;
getelement();
}
public ListViewwithimageAdapter(
OnItemSelectedListener onItemSelectedListener)
{
// TODO Auto-generated constructor stub
// this.contxt=conxt;
getelement();
}
public ListViewwithimageAdapter(OnItemClickListener onItemClickListener) {
// TODO Auto-generated constructor stub
getelement();
}
String[] itemsarray = {};//new String[100];
String[] url= {};//new String[30];
public String[] getelement()
{
// System.out.println("Insid getelement");
ArrayList<String> menuItems = new ArrayList<String>();
TaplistingParser parser = new TaplistingParser();
// System.out.println("url="+URL);
String xml= parser.getXmlFromUrl(URL);
Document doc=parser.getDomElement(xml);
// System.out.println("sssss="+doc);
NodeList nl=doc.getElementsByTagName("article");
kickerimage = new String[nl.getLength()];
url = new String[nl.getLength()];
// String headings = null;
for(int i=0; i < nl.getLength(); i++)
{
// System.out.println("i="+i);
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// map.put("Title", parser.getValue(e, "title"));
// map.put("Date", parser.getValue(e, "create_date"));
url[i]=parser.getValue(e, "url");
// System.out.println("b4 kick");
// System.out.println("value="+parser.getValue(e, "title"));
kickerimage[i]=parser.getValue(e, "kickerimage");
// System.out.println("after kick");
// System.out.println("kick="+kickerimage[i]);
menuItems.add(parser.getValue(e, "title"));
}
// System.out.println("b4 items array");
itemsarray = new String[menuItems.size()];
// System.out.println("subbu");
itemsarray=menuItems.toArray(itemsarray);
// System.out.println("subbu1");
// System.out.println("in last");
return itemsarray;
}
@Override
public int getCount()
{
// TODO Auto-generated method stub
return itemsarray.length;
}
@Override
public Object getItem(int position)
{
// TODO Auto-generated method stub
return itemsarray[position];
}
@Override
public long getItemId(int position)
{
// TODO Auto-generated method stub
// System.out.println("pos in id="+position);
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
// TODO Auto-generated method stub
Bitmap bitmap = DownloadImage(
kickerimage[position] );
// View listView = convertView;
if (convertView == null)
{
//this should only ever run if you do not get a view back
LayoutInflater inflater = (LayoutInflater) contxt
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.homelistrow, null);
}
// else
// {
// holder.removeAllViews();
// }
// View listView;
// if (convertView == null)
// {
// listView = new View(contxt);
// LinearLayout holder = (LinearLayout)convertView.findViewById(android.R.id);
//// holder = inflater.inflate(R.layout.homelistrow, null);
// System.out.println("pos="+position);
// System.out.println("item="+getItem(position));
// else
// {
TextView textView = (TextView) convertView
.findViewById(R.id.name_label);
textView.setText(itemsarray[position]);
ImageView imageView = (ImageView) convertView
.findViewById(R.id.icon);
imageView.setImageBitmap(bitmap);
// }
// else
// {
// listView = (View) convertView;
// }
// }
return convertView ;
}
private Bitmap DownloadImage(String URL)
{
// System.out.println("image inside="+URL);
Bitmap bitmap = null;
InputStream in = null;
try {
in = OpenHttpConnection(URL);
bitmap = BitmapFactory.decodeStream(in);
in.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// System.out.println("image last");
return bitmap;
}
private InputStream OpenHttpConnection(String urlString)
throws IOException
{
InputStream in = null;
int response = -1;
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
if (!(conn instanceof HttpURLConnection))
throw new IOException("Not an HTTP connection");
try{
HttpURLConnection httpConn = (HttpURLConnection) conn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.connect();
response = httpConn.getResponseCode();
if (response == HttpURLConnection.HTTP_OK)
{
in = httpConn.getInputStream();
}
}
catch (Exception ex)
{
throw new IOException("Error connecting");
}
return in;
}
}
我哪里出错了？请帮助我提前谢谢..