8
Activity से Fragment पर कॉल करके, मैं ListView को दो Buttons के साथ प्रदर्शित कर रहा हूं। जब मैं menu_item (यानी ऑनलाइन दिखाएं) पर क्लिक करता हूं, तो मैं डेटा अपडेट कर रहा हूं और इसलिए ListView। अब मुझे अद्यतन डेटा को प्रतिबिंबित करने की आवश्यकता है। ऑनलाइन दिखाएँ क्लिक करने के बाद मैं Fragment को रीफ्रेश कैसे कर सकता हूं। अब तक, मैं निम्नलिखित कोड का इस्तेमाल किया है:एक ही गतिविधि में शेष वर्तमान फ्रैगमेंट (सूची दृश्य डेटा) को रीफ्रेश करें
Intent intent = getIntent();
Intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
finish();
startActivity(intent);
लेकिन इस पूरे Activity पुनः आरंभ करेगा। मुझे बस वर्तमान Fragment रीफ्रेश करने की आवश्यकता है।
संपादित: कोड जोड़ा गया
गतिविधि कक्षा
public class ContactListActivity extends ActionBarActivity {
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final ActionBar actionBar = getActionBar();
MenuButtonUtil.enableMenuButton(this);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
MyContactsFragment contactListFragment = new MyContactsFragment();
fragmentTransaction.replace(android.R.id.content, contactListFragment);
fragmentTransaction.commit();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.show_online) {
ContentValues values = new ContentValues();
String where = "((" + ContactsContentProvider.PHONE_ID + " NOTNULL) AND ((" +
ContactsContentProvider.PHONE_ID+ " = 17486)OR (" +
ContactsContentProvider.PHONE_ID+ " = 17494)))";
values.put(ContactsContentProvider.STATUS, true);
this.getContentResolver().update(ContactsContentProvider.CONTENT_URI, values, where, null);
listView = (ListView) this.findViewById(android.R.id.list);
((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();
return true;
}
return super.onOptionsItemSelected(item);
}
}
टुकड़ा
public class MyContactsFragment extends ListFragment{
Button allContactsBtn;
Button neeoContactsBtn;
ListView listView;
CustomAdapterForAllContacts adapterForAllContacts;
CustomAdapterForNeeoContacts adapterForNeeoContacts;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
final ActionBar actionBar = getActivity().getActionBar();
MenuButtonUtil.enableMenuButton(getActivity());
adapterForNeeoContacts = new CustomAdapterForNeeoContacts();
adapterForAllContacts = new CustomAdapterForAllContacts();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.contactsfragment, container,false);
allContactsBtn = (Button) view.findViewById(R.id.allContactsButton);
neeoContactsBtn = (Button) view.findViewById(R.id.neeoContactsButton);
listView = (ListView) view.findViewById(android.R.id.list);
// ==================== Neeo Contacts ============================
neeoContactsBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
listView.setAdapter(adapterForNeeoContacts);
}
});
// ====================== All Contacts =============================
allContactsBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
listView.setAdapter(adapterForAllContacts);
}
});
return view;
}
एडाप्टर:
private class CustomAdapterForAllContacts extends BaseAdapter {
public CustomAdapterForAllContacts(){
}
List<Contact> contactsList = getAllContacts();
@Override
public int getCount() {
// TODO Auto-generated method stub
return contactsList.size();
}
@Override
public Contact getItem(int arg0) {
// TODO Auto-generated method stub
return contactsList.get(arg0);
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
@Override
public View getView(int position, View view, ViewGroup viewGroup) {
if(view==null)
{
LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.list_item, viewGroup,false);
}
TextView contName = (TextView)view.findViewById(R.id.nameText);
TextView contNumber = (TextView)view.findViewById(R.id.numberText);
ImageView image = (ImageView)view.findViewById(R.id.contact_image);
Contact contact = contactsList.get(position);
String status = contact.getStatus();
if(contact.getStatus().equals("1")){
image.setBackgroundResource(com.example.mycontentprovider.R.drawable.person_empty_online);
}else{
image.setBackgroundResource(com.example.mycontentprovider.R.drawable.person_empty_offline);
}
contName.setText(contact.getName());
contNumber.setText(contact.getPhoneNumber());
return view;
}
public Contact getContactPosition(int position)
{
return contactsList.get(position);
}
public List<Contact> getAllContacts(){
List<Contact> contactList = new ArrayList<Contact>();
String URL = "content://com.example.provider.Contacts/contacts";
Uri baseUri1 = Uri.parse(URL);
String[] select = {ContactsContentProvider.PHONE_ID, ContactsContentProvider.STATUS};
String where = "((" + ContactsContentProvider.NEEO_USER + " NOTNULL) AND (" +
ContactsContentProvider.NEEO_USER+ " = 1)AND (" +
ContactsContentProvider.STATUS+ " = 1))";
Cursor cursor = getActivity().getContentResolver().query(baseUri1, select, where, null, "pid");
for(cursor.moveToFirst(); cursor.moveToNext(); cursor.isAfterLast()) {
Log.w("Filtered IDS",""+ cursor.getString(cursor.getColumnIndex(ContactsContentProvider.PHONE_ID))+
""+ cursor.getString(cursor.getColumnIndex(ContactsContentProvider.STATUS)));
}
Uri baseUri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.CommonDataKinds.Phone._ID,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER};
String selection = "((" +
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " NOTNULL) AND (" +
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " != ' '))";
String[] selectionArgs = null;
String sortOrder = ContactsContract.CommonDataKinds.Phone._ID + " COLLATE LOCALIZED ASC";
Cursor mCursor= getActivity().getContentResolver().query(baseUri, projection, selection, selectionArgs, sortOrder);
// Joinging Both Cursors
CursorJoiner joiner = new CursorJoiner(cursor, new String[] {ContactsContentProvider.PHONE_ID} , mCursor, new String[] {ContactsContract.CommonDataKinds.Phone._ID});
for (CursorJoiner.Result joinerResult : joiner) {
Contact cont = new Contact();
Log.e("Result", joinerResult.toString());
switch (joinerResult) {
case LEFT:
// handle case where a row in cursorA is unique
break;
case RIGHT:
// handle case where a row in cursorB is unique
cont.setID(mCursor.getString(mCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone._ID)));
cont.setName(mCursor.getString(mCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)));
cont.setPhoneNumber(mCursor.getString(mCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));
cont.setStatus("0");
contactList.add(cont);
break;
case BOTH:
// handle case where a row with the same key is in both cursors
cont.setID(mCursor.getString(mCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone._ID)));
cont.setName(mCursor.getString(mCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)));
cont.setPhoneNumber(mCursor.getString(mCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));
cont.setStatus(cursor.getString(cursor.getColumnIndex(ContactsContentProvider.STATUS)));
contactList.add(cont);
break;
}
}
mCursor.close();
cursor.close();
return contactList;
}
}
उस के लिए 'ListFragment' प्रयुक्त ... –
फिर क्या? फ्रैगमेंट को ताज़ा करने के बारे में ListFragment के बारे में कोई विशिष्ट बात। –
और उस एडाप्टर पर 'notifyDataSetChanged() 'गतिविधि' Resume()' या कहीं भी ... यह आपके 'ListFragment' को अपडेट करेगा ... –