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我有兩個菜單和一個其他區域。我調用新的Thetask（）。以「init」作爲參數在activity load上執行。而且，紡紗人員應該從網上服務中提供可用的和現成的菜餚（這裏沒有包括這些方法）。最初，紡紗人將選擇「全部」，以便listview「restaurantlist」應該擁有所有餐館。當用戶改變菜單或區域時，餐廳列表視圖應該更新並顯示進度對話框。 現在我的問題是，所有的代碼工作，但進度對話框開始顯示在列表視圖填充後，進度對話框永遠不會停止，直到後退按鈕被按下。任何解決方案，這將是gr8的幫助。 在此先感謝。進度對話框沒有顯示
公共類Thetask擴展的AsyncTask {
String flagdopost="",x,y;
@Override
public void onPreExecute()
{
pg =new ProgressDialog(Restaurantlistdisplay.this);
pg.setMessage("fetching info....");
pg.setIndeterminate(true);
pg.setCancelable(true);
Log.i("inside preexecute","in pre execute");
pg.show();
}
public Void doInBackground(String... params)
{
if(params[0].equalsIgnoreCase("init"))
{
tempcuisinenamelist = getCuisines();
tempcuisinenamelist.add(0,"All");
tempareanamelist=getAreanames(cid, sid, cityid);
tempareanamelist.add(0,"All");
flagdopost="init";
Log.i("inside doinbackground 1st",flagdopost);
}
else if(params[0].equalsIgnoreCase(""))
{
firequery();
flagdopost="itemselected";
Log.i("inside doinbackground 2nd",flagdopost);
}
else if(params[0].equalsIgnoreCase("itemclick"))
{
//sendid=getRestaurantId(params[1],params[2]);
x=params[1];
y=params[2];
Log.i("in do in backgroung idforbundle is", Integer.toString(sendid));
flagdopost="itemclicked";
}
return null;
}
public void onPostExecute(Void result)
{
if(flagdopost.equalsIgnoreCase("init"))
{
ArrayAdapter<String> adaptercuisine=new ArrayAdapter<String> (Restaurantlistdisplay.this,android.R.layout.simple_spinner_item,tempcuisinenamelist);
adaptercuisine.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ArrayAdapter<String> adapterarea=new ArrayAdapter<String>(Restaurantlistdisplay.this,android.R.layout.simple_spinner_item,tempareanamelist);
adapterarea.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
area.setAdapter(adapterarea);
area.setSelection(0);
area.setOnItemSelectedListener(Restaurantlistdisplay.this);
cuisine.setAdapter(adaptercuisine);
cuisine.setSelection(0);
cuisine.setOnItemSelectedListener(Restaurantlistdisplay.this);
}
else if(flagdopost.equalsIgnoreCase("itemselected"))
{
getResult(str);
customlist.clear();
populateReslist();
//Log.i("inside 1st firequery","list populated"+customlist.toString());
restaurant.invalidateViews();
restaurant.setAdapter(new SimpleAdapter(Restaurantlistdisplay.this,customlist,R.layout.customlistrow,new String[] {"Restaurant Name","Area Name"},
new int[] {R.id.tvresname,R.id.tvareaname})
{
@Override
public View getView(int position, View convertView,ViewGroup parent)
{
View view =super.getView(position, convertView, parent);
return view;
}
});
}
else if(flagdopost.equalsIgnoreCase("itemclicked"))
{
sendid=getRestaurantId(x,y);
Bundle bundle=new Bundle();
bundle.putInt("locid",sendid);
Toast.makeText(getBaseContext(), "locId in dopost new one"+sendid, 10).show();
Intent resdetail = new Intent(Restaurantlistdisplay.this,Restaurantdetail.class);
resdetail.putExtras(bundle);
startActivity(resdetail);
}
pg.dismiss();
}
}
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3)
{
switch(arg0.getId())
{
case R.id.spncuisine: asynctaskflag="";
if(cuisine.getSelectedItem().toString()!="All")
{
cuisineval=cuisine.getSelectedItem().toString();
}
else
{
cuisineval="*";
}
new Thetask().execute(asynctaskflag,null,null);
break;
case R.id.spnarea:
asynctaskflag="";
if(area.getSelectedItem().toString()!="All")
{
areaval=area.getSelectedItem().toString();
}
else
{
areaval="*";
}
new Thetask().execute(asynctaskflag,null,null);
break;
}
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
// getCuisines的代碼（）是低於你所有的要求。 c。如果能幫助
public List<String> getCuisines()
{
String list = null;
cuisinelist=new ArrayList<String>();
try
{
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
request.addProperty("str", //here goes query to fetch data from table of </br>cuisines);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.setOutputSoapObject(request);
HttpTransportSE aht = new HttpTransportSE(URL);
aht.debug = true;
aht.call(SOAP_ACTION, envelope);
SoapPrimitive results = (SoapPrimitive)envelope.getResponse();
list=results.toString();
}
catch (SocketException ex)
{
ex.printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
}
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
try
{
DocumentBuilder builder = factory.newDocumentBuilder();
Document dom = builder.parse(new InputSource(new StringReader(list)));
Element root = dom.getDocumentElement();
NodeList items = root.getElementsByTagName("row");
for (int i=0;i<items.getLength();i++)
{
Node item = items.item(i);
NodeList properties = item.getChildNodes();
for (int j=0;j<properties.getLength();j++)
{
Node property = properties.item(j);
String name = property.getNodeName();
if (name.equalsIgnoreCase("typeName"))
{
cuisinelist.add(property.getFirstChild().getNodeValue());
}
}
}
return cuisinelist;
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
郵編（），請。 – Akram 2012-02-02 12:37:43
@Akki發佈了getcuisines的代碼。看看。但是，我認爲，當控制權在羣體烹飪的微調控制器之後立即被選擇爲微調項時，新的Task（）。execute（）再次運行，因此可能需要再次加載進度對話框。 – samir 2012-02-03 16:21:21