定义AsyncTask子类
private class LoadContactsTask extends AsyncTask<Void, Void, List<TxrjContact>> {
/* (non-Javadoc)
* @see android.os.AsyncTask#doInBackground(Params[])
*/
@Override
protected List<TxrjContact> doInBackground(Void... params) {
List<TxrjContact> contacts = ContactDataManager.getContacts(mContext);
return contacts;
}
/* (non-Javadoc)
* @see android.os.AsyncTask#onPreExecute()
*/
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgressDialog = ProgressDialog.show(mContext,
null, "loading contacts, please wait a moment");
}
/* (non-Javadoc)
* @see android.os.AsyncTask#onPostExecute(java.lang.Object)
*/
@Override
protected void onPostExecute(List<TxrjContact> result) {
super.onPostExecute(result);
mContacts = result;
mListAdapter = new ContactListAdapter(mContext, mContacts, mQuickAlphaBar);
mListView.setAdapter(mListAdapter);
mProgressDialog.dismiss();
}
}
在onCreate方法中使用AsyncTask
new LoadContactsTask().execute();
定义AsyncQueryHandler的子类
private class AsyncQueryContacts extends AsyncQueryHandler {
public AsyncQueryContacts(ContentResolver cr) {
super(cr);
}
@Override
protected void onQueryComplete(int token, Object cookie, Cursor c) {
List<TxrjContact> contacts = new ArrayList<TxrjContact>();
HashMap<Integer, TxrjContact> contactMap = new HashMap<Integer, TxrjContact>();
if(c != null) {
while(c.moveToNext()) {
int contactId = c.getInt(c.getColumnIndex(Data.CONTACT_ID));
TxrjContact contact = null;
if(contactMap.containsKey(contactId)) {
contact = contactMap.get(contactId);
} else {
contact = new TxrjContact();
contact.setContactId(contactId);
contact.setName(c.getString(c.getColumnIndex(Phone.DISPLAY_NAME)));
contact.setSortKey(c.getString(c.getColumnIndex("sort_key")));
contactMap.put(contactId, contact);
contacts.add(contact);
}
TxrjPhone phone = new TxrjPhone();
phone.setId(c.getInt(c.getColumnIndex(Data._ID)));
phone.setRawContactId(c.getInt(c.getColumnIndex(Data.RAW_CONTACT_ID)));
phone.setContactId(c.getInt(c.getColumnIndex(Data.CONTACT_ID)));
phone.setNumber(c.getString(c.getColumnIndex(Phone.NUMBER)));
phone.setType(c.getString(c.getColumnIndex(Phone.TYPE)));
phone.setLabel(c.getString(c.getColumnIndex(Phone.LABEL)));
contact.getPhoneList().add(phone);
}
c.close();
}
mContacts = contacts;
mListAdapter = new ContactListAdapter(mContext, mContacts, mQuickAlphaBar);
mListView.setAdapter(mListAdapter);
mProgressDialog.dismiss();
super.onQueryComplete(token, cookie, c);
}
}
在onCreate方法中使用AsyncQueryHandler
private AsyncQueryContacts asyncQuery;
asyncQuery = new AsyncQueryContacts(getContentResolver());
mProgressDialog = ProgressDialog.show(mContext,
null, "loading contacts, please wait a moment");
asyncQuery.startQuery(0, null, Data.CONTENT_URI,
new String[] {Data._ID, Data.CONTACT_ID, Data.RAW_CONTACT_ID,
Phone.DISPLAY_NAME, Phone.NUMBER, Phone.TYPE, Phone.LABEL, "sort_key"},
Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'",
null, "sort_key COLLATE LOCALIZED asc");