android.content.Loader Java Examples

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
    return new CursorLoader(this,
            // Retrieve data rows for the device user's 'profile' contact.
            Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
                    ContactsContract.Contacts.Data.CONTENT_DIRECTORY), ProfileQuery.PROJECTION,

            // Select only email addresses.
            ContactsContract.Contacts.Data.MIMETYPE +
                    " = ?", new String[]{ContactsContract.CommonDataKinds.Email
            .CONTENT_ITEM_TYPE},

            // Show primary email addresses first. Note that there won't be
            // a primary email address if the user hasn't specified one.
            ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
}
 

public Loader<Cursor> onCreateLoader(final int id, Bundle bundle) {

		CursorLoader cursorLoader = null;

		switch (id) {
		case LOADER_USER_PHOTOS_EXTERNAL:
			String selection = null;
			String[] selectionArgs = null;

			if (null != bundle
					&& bundle.containsKey(LOADER_PHOTOS_BUCKETS_PARAM)) {
				selection = Images.Media.BUCKET_ID + " = ?";
				selectionArgs = new String[] { bundle
						.getString(LOADER_PHOTOS_BUCKETS_PARAM) };
			}

			cursorLoader = new PhotupCursorLoader(getActivity(),
					MediaStoreCursorHelper.MEDIA_STORE_CONTENT_URI,
					MediaStoreCursorHelper.PHOTOS_PROJECTION, selection,
					selectionArgs, MediaStoreCursorHelper.PHOTOS_ORDER_BY,
					false);
			break;
		}

		return cursorLoader;
	}
 

@Override
public void onLoadFinished(final Loader<Cursor> loader, final Cursor data) {
	if (data != null && data.moveToNext()) {
		/*
		 * Here we have to check the column indexes by name as we have requested for all. The order may be different.
		 */
		final String fileName = data.getString(data.getColumnIndex(MediaStore.MediaColumns.DISPLAY_NAME)/* 0 DISPLAY_NAME */);
		final int fileSize = data.getInt(data.getColumnIndex(MediaStore.MediaColumns.SIZE) /* 1 SIZE */);
		String filePath = null;
		final int dataIndex = data.getColumnIndex(MediaStore.MediaColumns.DATA);
		if (dataIndex != -1)
			filePath = data.getString(dataIndex /* 2 DATA */);
		if (!TextUtils.isEmpty(filePath))
			this.filePath = filePath;

		updateFileInfo(fileName, fileSize, fileType);
	} else {
		fileNameView.setText(null);
		fileTypeView.setText(null);
		fileSizeView.setText(null);
		filePath = null;
		fileStreamUri = null;
		fileStatusView.setText(R.string.dfu_file_status_error);
		statusOk = false;
	}
}
 

@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
    return new CursorLoader(this,
            // Retrieve data rows for the device user's 'profile' contact.
            Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
                    ContactsContract.Contacts.Data.CONTENT_DIRECTORY), ProfileQuery.PROJECTION,

            // Select only email addresses.
            ContactsContract.Contacts.Data.MIMETYPE +
                    " = ?", new String[]{ContactsContract.CommonDataKinds.Email
            .CONTENT_ITEM_TYPE},

            // Show primary email addresses first. Note that there won't be
            // a primary email address if the user hasn't specified one.
            ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
}
 

@Override public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    String s = mNegative ? "<" : ">";
    SQLiteLoader retVal = new SQLiteLoader(
        getActivity(),
        mHelper,
        "log",
        new String[] { "description", "cents", "time", "_id" },
        "envelope = ? AND cents "+s+" 0",
        new String[] {Integer.toString(mId)},
        null,
        null,
        "time * -1"
    );
    retVal.setNotificationUri(EnvelopesOpenHelper.URI);
    return retVal;
}
 

@Override
public Loader<Cursor> getCursorLoader() {
    return new CursorLoader(this,
            // Retrieve data rows for the device user's 'profile' contact.
            Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
                    ContactsContract.Contacts.Data.CONTENT_DIRECTORY), LoginPresenterImpl.ProfileQuery.PROJECTION,

            // Select only email addresses.
            ContactsContract.Contacts.Data.MIMETYPE +
                    " = ?", new String[]{ContactsContract.CommonDataKinds.Email
            .CONTENT_ITEM_TYPE},

            // Show primary email addresses first. Note that there won't be
            // a primary email address if the user hasn't specified one.
            ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
}
 

public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    // This is called when a new Loader needs to be created.  This
    // sample only has one Loader, so we don't care about the ID.
    // First, pick the base URI to use depending on whether we are
    // currently filtering.
    Uri baseUri;
    if (mCurFilter != null) {
        baseUri = Uri.withAppendedPath(Contacts.CONTENT_FILTER_URI,
                Uri.encode(mCurFilter));
    } else {
        baseUri = Contacts.CONTENT_URI;
    }

    // Now create and return a CursorLoader that will take care of
    // creating a Cursor for the data being displayed.
    String select = "((" + Contacts.DISPLAY_NAME + " NOTNULL) AND ("
            + Contacts.HAS_PHONE_NUMBER + "=1) AND ("
            + Contacts.DISPLAY_NAME + " != '' ))";
    return new CursorLoader(getActivity(), baseUri,
            CONTACTS_SUMMARY_PROJECTION, select, null,
            Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
}
 

/**
 * create new cursor with specific projection
 *
 * @param id
 * @param args
 * @return
 */
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    String[] projectALL = new String[]{"*"};

    String selection = null;
    if (args != null) {
        String searchRecord = args.getString("SEARCH_KEY");
        if (searchRecord != null && searchRecord.length() > 0) {
            selection = RecordDbContract.RecordItem.COLUMN_NUMBER + " LIKE '%" + searchRecord + "%'";
        }
    }

    String sort = mPreferenceHelper.getSortSelection()
            + mPreferenceHelper.getSortArrange();
    return new CursorLoader(getActivity(), RecordDbContract.CONTENT_URL, projectALL, selection, null, sort);
}
 

@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
    return new CursorLoader(this,
            // Retrieve data rows for the device user's 'profile' contact.
            Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
                    ContactsContract.Contacts.Data.CONTENT_DIRECTORY), ProfileQuery.PROJECTION,

            // Select only email addresses.
            ContactsContract.Contacts.Data.MIMETYPE +
                    " = ?", new String[]{ContactsContract.CommonDataKinds.Email
            .CONTENT_ITEM_TYPE},

            // Show primary email addresses first. Note that there won't be
            // a primary email address if the user hasn't specified one.
            ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
}
 

@Override
public Loader onCreateLoader(int picker_type, Bundle bundle) {
    String selection = MediaStore.Files.FileColumns.MEDIA_TYPE + "="
            + MediaStore.Files.FileColumns.MEDIA_TYPE_IMAGE
            + " OR "
            + MediaStore.Files.FileColumns.MEDIA_TYPE + "="
            + MediaStore.Files.FileColumns.MEDIA_TYPE_VIDEO;

    Uri queryUri = MediaStore.Files.getContentUri("external");
    CursorLoader cursorLoader = new CursorLoader(
            mContext,
            queryUri,
            MEDIA_PROJECTION,
            selection,
            null, // Selection args (none).
            MediaStore.Files.FileColumns.DATE_ADDED + " DESC" // Sort order.
    );
    return cursorLoader;
}
 

public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
    // Swap the new cursor in.  (The framework will take care of closing the
    // old cursor once we return.)
    Polyline line = new Polyline(map);
    line.setWidth(4f);
    line.setColor(Color.BLUE);
    if(data.getCount() > 0) {
        List<GeoPoint> pts = new ArrayList<>(data.getCount());
        if ((data != null) && data.moveToFirst()) {
            while (!data.isAfterLast()) {
                int hacc_idx = data.getColumnIndex(ActivityDiaryContract.DiaryLocation.HACC);

                if (data.isNull(hacc_idx) || data.getInt(hacc_idx) < 250) {
                    pts.add(new GeoPoint(data.getDouble(data.getColumnIndex(ActivityDiaryContract.DiaryLocation.LATITUDE)), data.getDouble(data.getColumnIndex(ActivityDiaryContract.DiaryLocation.LONGITUDE))));
                }
                data.moveToNext();
            }
        }
        line.setPoints(pts);
        map.getOverlayManager().add(line);
        noMap.setVisibility(View.GONE);
        map.setVisibility(View.VISIBLE);
    }else{
        noMap.setVisibility(View.VISIBLE);
        map.setVisibility(View.GONE);
    }
}
 

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
	// Get the details fragment
	DetailsFragment fragment = (DetailsFragment) getFragmentManager()
			.findFragmentById(R.id.fragment_details);

	// Is details fragment visible?
	if (fragment != null && fragment.isVisible() && cursor.getCount() == 0) {
		fragment.updateView(-1);
		Toast.makeText(getActivity(), "No data", Toast.LENGTH_LONG).show();
	}

	Log.d(TAG, "onLoadFinished with cursor: " + cursor.getCount());
	mAdapter.swapCursor(cursor);
}
 

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    // Hide the progress bar when the loading is finished.
    ProgressBar progressBar = findViewById(R.id.progressBar_album);
    progressBar.setVisibility(View.GONE);

    // Set the text of the empty view
    mEmptyTV.setText(R.string.no_audio_files);

    if (cursor != null && cursor.getCount() > 0) {
        if (cursor.moveToFirst()) {
            // Set album cover
            String coverPath = cursor.getString(cursor.getColumnIndex(AnchorContract.AlbumEntry.TABLE_NAME + AnchorContract.AlbumEntry.COLUMN_COVER_PATH));
            coverPath = mDirectory + File.separator + coverPath;
            int reqSize = getResources().getDimensionPixelSize(R.dimen.album_info_height);
            BitmapUtils.setImage(mAlbumInfoCoverIV, coverPath, reqSize);

            // Set the album info time
            int[] times = DBAccessUtils.getAlbumTimes(this, mAlbumId);
            Log.e("AlbumActivity", "Update AlbumLastCompletedTime");
            if (mPlayer != null) {
                mCurrAudioLastCompletedTime = mPlayer.getCurrentAudioFile().getCompletedTime();
                mCurrUpdatedAudioId = mPlayer.getCurrentAudioFile().getId();
            }
            mAlbumLastCompletedTime = times[0];
            mAlbumDuration = times[1];
            String timeStr = Utils.getTimeString(this, times[0], times[1]);
            mAlbumInfoTimeTV.setText(timeStr);
        }
    }
    mAlbumInfoTitleTV.setText(mAlbumName);

    // Swap the new cursor in. The framework will take care of closing the old cursor
    mCursorAdapter.swapCursor(cursor);
}
 

@Override
public void onChange(boolean selfChange) {
    if (!isAdded()) {
        return;
    }

    //Reload data
    LoaderManager lm = getLoaderManager();
    Loader<Cursor> loader = lm.getLoader(0);
    if (loader != null) {
        loader.forceLoad();
    }
}
 

@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
    List<String> emails = new ArrayList<String>();
    cursor.moveToFirst();
    while (!cursor.isAfterLast()) {
        emails.add(cursor.getString(ProfileQuery.ADDRESS));
        cursor.moveToNext();
    }

    addEmailsToAutoComplete(emails);
}
 

@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
	int limit = args.getInt(TAG, getFetchSize());
	return CatnutUtils.getCursorLoader(
			getActivity(),
			CatnutProvider.parse(Comment.MULTIPLE),
			PROJECTION,
			null,
			null,
			Comment.TABLE + " as c",
			"inner join " + User.TABLE + " as u on c.uid=u._id",
			"c." + BaseColumns._ID + " desc",
			String.valueOf(limit)
	);
}
 

@Override
public void onLoadFinished(Loader<String> loader, String data) {
    pbProgressBar.setVisibility(View.GONE);

    try {
        JSONObject baseJsonResponse = new JSONObject(data);
        JSONArray res = baseJsonResponse.getJSONArray("result");
        for (int i = 0; i < res.length(); i++) {
            JSONObject currentContest = res.getJSONObject(i);
            int change = currentContest.getInt("newRating") - currentContest.getInt("oldRating");
            Contest contest =
                    new Contest(
                            currentContest.getInt("contestId"),
                            currentContest.getString("contestName"),
                            currentContest.getInt("rank"),
                            currentContest.getInt("oldRating"),
                            change,
                            currentContest.getInt("newRating"));
            contestList.add(contest);
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }

    contestList = reverse(contestList);

    if (contestList.size() == 0) {
        tvEmptyList.setVisibility(View.VISIBLE);
        filterMenuItem.setVisible(false);
    } else {
        recyclerView.setVisibility(View.VISIBLE);
        filterMenuItem.setVisible(true);
        adapter.notifyDataSetChanged();
    }
    positiveNegativeChangeList(contestList);
}
 

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
	if (mSwipeRefreshLayout.isRefreshing()) {
		mSwipeRefreshLayout.setRefreshing(false);
	}
	mAdapter.swapCursor(data);
}
 

@Override
public Loader<List<DetailEntry>> onCreateLoader(int id, Bundle args) {
    StorageService storageService = new LocalStorageService(getActivity());
    DetailService detailService = new FlatFileDetailService(storageService);

    MasterDetailLoader loader = new MasterDetailLoader(getActivity(), detailService);

    callbacks.onLoaderCreated(loader);
    return loader;
}
 

@Override
public Loader<Cursor> onCreateLoader(int loaderIndex, Bundle args) {
    // Where the Contactables table excels is matching text queries,
    // not just data dumps from Contacts db.  One search term is used to query
    // display name, email address and phone number.  In this case, the query was extracted
    // from an incoming intent in the handleIntent() method, via the
    // intent.getStringExtra() method.

    // BEGIN_INCLUDE(uri_with_query)
    String query = args.getString(QUERY_KEY);
    Uri uri = Uri.withAppendedPath(
            CommonDataKinds.Contactables.CONTENT_FILTER_URI, query);
    // END_INCLUDE(uri_with_query)


    // BEGIN_INCLUDE(cursor_loader)
    // Easy way to limit the query to contacts with phone numbers.
    String selection =
            CommonDataKinds.Contactables.HAS_PHONE_NUMBER + " = " + 1;

    // Sort results such that rows for the same contact stay together.
    String sortBy = CommonDataKinds.Contactables.LOOKUP_KEY;

    return new CursorLoader(
            mContext,  // Context
            uri,       // URI representing the table/resource to be queried
            null,      // projection - the list of columns to return.  Null means "all"
            selection, // selection - Which rows to return (condition rows must match)
            null,      // selection args - can be provided separately and subbed into selection.
            sortBy);   // string specifying sort order
    // END_INCLUDE(cursor_loader)
}
 

@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    return new CursorLoader(this,
            deviceUri,
            new String[] {DevicesContract.Device.MODEL,
                    DevicesContract.Device.NICKNAME,
                    DevicesContract.Device.DISPLAY_SIZE_INCHES,
                    DevicesContract.Device.MEMORY_MB,
                    DevicesContract.Device._ID},
            null,
            null,
            null);
}
 

@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
	if (id == 0) {
		return new CursorLoader(this, Calls.CONTENT_URI, LogEntryAdapter.PROJECTION, null, null, Calls.DEFAULT_SORT_ORDER);
	} else {
		return new CursorLoader(this, Phone.CONTENT_URI, ContactsEntryAdapter.PROJECTION, Phone.HAS_PHONE_NUMBER+"=1", null, Phone.DISPLAY_NAME);
	}
}
 

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    Bundle extras = cursor.getExtras();
    int totalSize = extras.getInt(ContentResolver.EXTRA_TOTAL_SIZE);
    mAdapter.setTotalSize(totalSize);
    int beforeCount = mAdapter.getFetchedItemCount();
    while (cursor.moveToNext()) {
        String displayName = cursor.getString(cursor.getColumnIndex(
                ImageContract.Columns.DISPLAY_NAME));
        String absolutePath = cursor.getString(cursor.getColumnIndex(
                ImageContract.Columns.ABSOLUTE_PATH));

        ImageAdapter.ImageDocument imageDocument = new ImageAdapter.ImageDocument();
        imageDocument.mAbsolutePath = absolutePath;
        imageDocument.mDisplayName = displayName;
        mAdapter.add(imageDocument);
    }
    int cursorCount = cursor.getCount();
    if (cursorCount == 0) {
        return;
    }
    Activity activity = ImageClientFragment.this.getActivity();
    mAdapter.notifyItemRangeChanged(beforeCount, cursorCount);
    int offsetSnapShot = mOffset.get();
    String message = activity.getResources()
            .getString(R.string.fetched_images_out_of, offsetSnapShot + 1,
                    offsetSnapShot + cursorCount, totalSize);
    mOffset.addAndGet(cursorCount);
    Toast.makeText(activity, message, Toast.LENGTH_LONG).show();
}
 

@Override
public void onLoadFinished(Loader<List<Earthquake>> loader, List<Earthquake> earthquakes) {
    Log.i(LOG_TAG, "onLoadFinished()");

    findViewById(R.id.progress).setVisibility(View.GONE);
    ((TextView) findViewById(R.id.empty_state)).setText(R.string.no_earthquakes_found);
    // Clear the adapter of previous earthquake data
    mAdapter.clear();

    /// If there is a valid list of {@link Earthquake}s, then add them to the adapter's
    // data set. This will trigger the ListView to update.
    if (earthquakes != null && !earthquakes.isEmpty()) {
        mAdapter.addAll(earthquakes);
    }
}
 

@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
    List<String> emails = new ArrayList<>();
    cursor.moveToFirst();
    while (!cursor.isAfterLast()) {
        emails.add(cursor.getString(ProfileQuery.ADDRESS));
        cursor.moveToNext();
    }

    //addEmailsToAutoComplete(emails);
}
 

/**
     * Data loader event
     *
     * @param loader
     */
    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        // data is not available anymore, delete reference
//        setAdapter();
        adapter = null;
        expandableListView.setAdapter(adapter);
    }
 

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
	if (mSwipeRefreshLayout.isRefreshing()) {
		mSwipeRefreshLayout.setRefreshing(false);
	}
	mAdapter.swapCursor(data);
}
 

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
	if (mSwipeRefreshLayout.isRefreshing()) {
		mSwipeRefreshLayout.setRefreshing(false);
	}
	mAdapter.swapCursor(data);
}
 

@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
    List<String> emails = new ArrayList<>();
    cursor.moveToFirst();
    while (!cursor.isAfterLast()) {
        emails.add(cursor.getString(ProfileQuery.ADDRESS));
        cursor.moveToNext();
    }

    addEmailsToAutoComplete(emails);
}
 

@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
	String selection = mSelection;
	boolean search = args.getBoolean(SEARCH_TWEET);
	if (search) {
		if (!TextUtils.isEmpty(mCurFilter)) {
			selection = new StringBuilder(mSelection)
					.append(" and ").append(Status.columnText)
					.append(" like ").append(CatnutUtils.like(mCurFilter))
					.toString();
		} else {
			search = false;
		}
	}
	int limit = args.getInt(TAG, getFetchSize());
	return CatnutUtils.getCursorLoader(
			getActivity(),
			CatnutProvider.parse(Status.MULTIPLE),
			PROJECTION,
			selection,
			null,
			Status.TABLE,
			null,
			BaseColumns._ID + " desc",
			search ? null : String.valueOf(limit)
	);
}