Java tutorial
/* CarLogbook. Copyright (C) 2014 Eugene Nadein This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.enadein.carlogbook.ui; import android.database.Cursor; import android.os.Bundle; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.support.v4.widget.SwipeRefreshLayout; import android.view.LayoutInflater; import android.view.Menu; import android.view.View; import android.view.ViewGroup; import android.widget.ListView; import com.enadein.carlogbook.CarLogbook; import com.enadein.carlogbook.R; import com.enadein.carlogbook.adapter.FuelRateAdapter; import com.enadein.carlogbook.bean.DataInfo; import com.enadein.carlogbook.core.BaseFragment; import com.enadein.carlogbook.core.BaseReportFragment; import com.enadein.carlogbook.core.CarChangedListener; import com.enadein.carlogbook.core.DataLoader; import com.enadein.carlogbook.db.DBUtils; import com.enadein.carlogbook.db.ProviderDescriptor; public class FuelRateFragment extends BaseReportFragment implements LoaderManager.LoaderCallbacks<Cursor>, SwipeRefreshLayout.OnRefreshListener, CarChangedListener { private FuelRateAdapter adapter; private SwipeRefreshLayout swipeLayout; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.rate_report, container, false); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); adapter = new FuelRateAdapter(getActivity(), null, getMediator().getUnitFacade()); ListView carListView = (ListView) view.findViewById(R.id.list); carListView.setAdapter(adapter); swipeLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_container); swipeLayout.setColorSchemeResources(R.color.progress1, R.color.progress2, R.color.progress3, R.color.progress4); swipeLayout.setOnRefreshListener(this); } @Override public void onResume() { super.onPause(); // getLoaderManager().initLoader(CarLogbook.LoaderDesc.REP_FUEL_RATE_ID, // null, this); // showProgress(true); getLoaderManager().restartLoader(CarLogbook.LoaderDesc.REP_CALC_FUEL_RATE, null, new LoaderCalculate()); // swipeLayout.setRefreshing(true); getMediator().showCarSelection(this); } @Override public void onRefresh() { getLoaderManager().restartLoader(CarLogbook.LoaderDesc.REP_CALC_FUEL_RATE, null, new LoaderCalculate()); } @Override public void selectMenuItem(Menu menu) { menu.findItem(R.id.menu_fuel_rate).setIcon(R.drawable.stat); } @Override public void onCarChanged(long id) { getLoaderManager().restartLoader(CarLogbook.LoaderDesc.REP_CALC_FUEL_RATE, null, new LoaderCalculate()); } private class LoaderCalculate implements LoaderManager.LoaderCallbacks<DataInfo> { @Override public Loader<DataInfo> onCreateLoader(int id, Bundle bundle) { // swipeLayout.setRefreshing(true); swipeLayout.post(new Runnable() { @Override public void run() { swipeLayout.setRefreshing(true); } }); return new DataLoader(getActivity(), DataLoader.CALC_RATE, null, getMediator().getUnitFacade()); } @Override public void onLoadFinished(Loader<DataInfo> dataInfoLoader, DataInfo dataInfo) { getLoaderManager().initLoader(CarLogbook.LoaderDesc.REP_FUEL_RATE_ID, null, FuelRateFragment.this); } @Override public void onLoaderReset(Loader<DataInfo> dataInfoLoader) { } } @Override public String getSubTitle() { return getString(R.string.menu_item_reports); } @Override public Loader<Cursor> onCreateLoader(int id, Bundle args) { Long carId = DBUtils.getActiveCarId(getActivity().getContentResolver()); CursorLoader cursorLoader = new CursorLoader(getActivity(), ProviderDescriptor.FuelRateView.CONTENT_URI, null, DBUtils.CAR_SELECTION_RATE, new String[] { String.valueOf(carId) }, null); return cursorLoader; } @Override public void onLoadFinished(Loader<Cursor> loader, Cursor data) { // showProgress(false); adapter.swapCursor(data); showNoItems(data.getCount() == 0); swipeLayout.setRefreshing(false); } @Override public void onLoaderReset(Loader<Cursor> loader) { adapter.swapCursor(null); } }