我的视图中有四个选项卡，选项卡输出取决于同一视图中的其他选项卡输入。因此，当我单击一个选项卡时，它会在列表视图中生成一个数组列表并显示项目，但是当我第二次单击同一个选项卡时，它会给出数组索引超出绑定的异常。我认为这是因为以前下载的内容在视图中，所以当我第一次点击选项卡时，如何删除/删除以前加载的内容。我知道它可以在onresume（）和onpause（）方法上完成，但是什么代码应该在onpause（）中去除以前加载的内容。用新内容刷新它。 ontabclick（）。
谢谢！
public class OpeningToday extends ListActivity {
String name = null;
String typename = null;
static String array_type[];
static int totalartist;
static String array_galleryname[]=null;
static String array_address[]=null;
static String array_galleryurl[]=null;
static String array_email[];
static String array_web[];
static String array_phone[];
static String array_latitude[];
static String array_longitude[];
SitesList2 sitesList;
//static String gallerynames;
//static String addresses;
private ProgressDialog dialog;
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i("saurabh trivedi","saurabh trivedui");
super.onCreate(savedInstanceState);
setContentView(R.layout.openingtoday);
ImageView iv=(ImageView)findViewById(R.id.imv);
iv.setBackgroundResource(R.drawable.fiiatlogo);
new ProgressTask6().execute();
}
protected void onPause() {
super.onPause();
}
protected void onResume()
{
super.onResume();
new ProgressTask6().execute();
}
private class ProgressTask6 extends AsyncTask<String, Void, Boolean> {
private ProgressDialog dialog;
private Context context;
@Override
protected void onPreExecute() {
dialog = new ProgressDialog(OpeningToday.this);
dialog.setMessage("Processing...");
dialog.setIndeterminate(true);
dialog.setCancelable(false);
dialog.show();
}
@Override
protected void onPostExecute(final Boolean success) {
if (dialog.isShowing())
{
dialog.dismiss();
setListAdapter(new MyAdapter(OpeningToday.this));
}
if(totalartist==0)
{
AlertDialog.Builder alt_bld = new AlertDialog.Builder(OpeningToday.this);
alt_bld.setMessage("galleries not found..")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
});
AlertDialog alert = alt_bld.create();
// Title for AlertDialog
alert.setTitle("Title");
// Icon for AlertDialog
alert.setIcon(R.drawable.icon);
alert.show();
}
}
@Override
protected Boolean doInBackground(String... args) {
try{
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
String temp = "http://www.arteonline.mobi/iphone/output.php?visit=1";
temp = temp.replaceAll(" " ,"%20");
Log.i("temp url..",temp);
URL sourceUrl = new URL(temp);
XMLHandler myXMLHandler = new XMLHandler();
xr.setContentHandler(myXMLHandler);
xr.parse(new InputSource(sourceUrl.openStream()));
}
catch (Exception e) {
System.out.println("XML Pasing Excpetion = " + e);
}
sitesList = XMLHandler.sitesList2;
keywordresulttab.array_galleryname = new String[sitesList.getGalleryname().size()];
totalartist= sitesList.getGalleryname().size();
Log.i("opening today artist..",Integer.toString(totalartist));
for (int i = 0; i < sitesList.getGalleryname().size(); i++)
{
name = sitesList.getGalleryname().get(i);
keywordresulttab.array_galleryname[i] = name;
// Log.i("array_spinner" + i, array_galleryname[i]);
}
keywordresulttab.array_type = new String[sitesList.getType().size()];
for (int i = 0; i < sitesList.getType().size(); i++)
{
name = sitesList.getType().get(i);
keywordresulttab.array_type[i] = name;
// Log.i("array_spinner" + i, array_estado[i]);
}
keywordresulttab.array_email = new String[sitesList.getEmail().size()];
for (int i = 0; i < sitesList.getEmail().size(); i++)
{
name = sitesList.getType().get(i);
keywordresulttab.array_email[i] = name;
// Log.i("array_spinner" + i, array_estado[i]);
}
keywordresulttab.array_address = new String[sitesList.getAddress().size()];
for (int i = 0; i < sitesList.getAddress().size(); i++)
{
name = sitesList.getAddress().get(i);
keywordresulttab.array_address[i] = name;
//Log.i("array_spinner" + i, array_address[i]);
}
keywordresulttab.array_web = new String[sitesList.getWeb().size()];
for (int i = 0; i < sitesList.getWeb().size(); i++)
{
name = sitesList.getWeb().get(i);
keywordresulttab.array_web[i] = name;
}
keywordresulttab.array_lati = new String[sitesList.getLati().size()];
for (int i = 0; i < sitesList.getLati().size(); i++)
{
name = sitesList.getLati().get(i);
keywordresulttab.array_lati[i] = name;
Log.i("array_spinner" + i,keywordresulttab.array_lati[i]);
}
keywordresulttab.array_longi = new String[sitesList.getLongi().size()];
for (int i = 0; i < sitesList.getLongi().size(); i++)
{
name = sitesList.getLongi().get(i);
keywordresulttab.array_longi[i] = name;
Log.i("array_spinner" + i, keywordresulttab.array_longi[i]);
}
keywordresulttab.array_phone = new String[sitesList.getPhoneno().size()];
for (int i = 0; i < sitesList.getPhoneno().size(); i++)
{
name = sitesList.getPhoneno().get(i);
keywordresulttab.array_phone[i] = name;
}
keywordresulttab.array_imgurl = new String[sitesList.getImagegalleryurl().size()];
for (int i = 0; i < sitesList.getImagegalleryurl().size(); i++)
{
name = sitesList.getImagegalleryurl().get(i);
keywordresulttab.array_imgurl[i] = name;
}
} catch (Exception e){
Log.e("tag", "error", e);
return false;
}
return null;
}
class MyAdapter extends BaseAdapter implements OnClickListener
{
private LayoutInflater inflater;
public MyAdapter(Context ctx) {
super();
this.inflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return totalartist;
}
/* Not implemented but not really needed */
@Override
public Object getItem(int position) {
return null;
}
/* Not implemented but not really needed */
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View ConvertView, ViewGroup parent)
{
View v = inflater.inflate(R.layout.listitem_layout, parent, false);
// Log.i("array galoijewdh..",keywordresulttab.array_galleryname[position]);
Log.i("saurabh trivedi","saurabh trivedui");
// Variables.a=3;
String gallerynames = keywordresulttab.array_galleryname[position];
String addresses = keywordresulttab.array_address[position];
TextView tv = (TextView) v.findViewById(R.id.barrio);
tv.setText(gallerynames);
tv = (TextView) v.findViewById(R.id.ciudad);
tv.setText(addresses);
((BaseAdapter)(getListAdapter())).notifyDataSetChanged();
return v;
}
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
}
}
}
答案 0 :(得分：0)
在onResume（）方法中使您的数组列表为空，并立即用新内容填充它。