Java tutorial
/* * Copyright (C) 2010-2012 Paul Watts (paulcwatts@gmail.com) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package can.yrt.onebusaway; import can.yrt.oba.provider.ObaContract; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.support.v4.widget.SimpleCursorAdapter; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView.AdapterContextMenuInfo; import android.widget.ListView; import android.widget.TextView; abstract class MyStopListFragmentBase extends MyListFragmentBase implements QueryUtils.StopList.Columns { //private static final String TAG = "MyStopListActivity"; @Override protected SimpleCursorAdapter newAdapter() { return QueryUtils.StopList.newAdapter(getActivity()); } @Override protected Uri getContentUri() { return ObaContract.Stops.CONTENT_URI; } @Override public void onListItemClick(ListView l, View v, int position, long id) { StopData stopData = getStopData(l, position); ArrivalsListActivity.Builder b = stopData.getArrivalsList(); if (isShortcutMode()) { final Intent shortcut = UIHelp.makeShortcut(getActivity(), stopData.getUiName(), b.getIntent()); Activity activity = getActivity(); activity.setResult(Activity.RESULT_OK, shortcut); activity.finish(); } else { b.setUpMode(NavHelp.UP_MODE_BACK); b.start(); } } protected StopData getStopData(ListView l, int position) { // Get the cursor and fetch the stop ID from that. SimpleCursorAdapter cursorAdapter = (SimpleCursorAdapter) l.getAdapter(); return new StopData(cursorAdapter.getCursor(), position - l.getHeaderViewsCount()); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo; final TextView text = (TextView) info.targetView.findViewById(R.id.stop_name); menu.setHeaderTitle(text.getText()); if (isShortcutMode()) { menu.add(0, CONTEXT_MENU_DEFAULT, 0, R.string.my_context_create_shortcut); } else { menu.add(0, CONTEXT_MENU_DEFAULT, 0, R.string.my_context_get_stop_info); } menu.add(0, CONTEXT_MENU_SHOW_ON_MAP, 0, R.string.my_context_showonmap); if (!isShortcutMode()) { menu.add(0, CONTEXT_MENU_CREATE_SHORTCUT, 0, R.string.my_context_create_shortcut); } } @Override public boolean onContextItemSelected(MenuItem item) { AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); switch (item.getItemId()) { case CONTEXT_MENU_DEFAULT: // Fake a click onListItemClick(getListView(), info.targetView, info.position, info.id); return true; case CONTEXT_MENU_SHOW_ON_MAP: showOnMap(getListView(), info.position); return true; case CONTEXT_MENU_CREATE_SHORTCUT: StopData stopData = getStopData(getListView(), info.position); final Intent shortcutIntent = UIHelp.makeShortcut(getActivity(), stopData.uiName, stopData.getArrivalsList().getIntent()); shortcutIntent.setAction(MyListConstants.INSTALL_SHORTCUT); shortcutIntent.setFlags(0); getActivity().sendBroadcast(shortcutIntent); return true; default: return super.onContextItemSelected(item); } } private void showOnMap(ListView l, int position) { // Get the cursor and fetch the stop ID from that. SimpleCursorAdapter cursorAdapter = (SimpleCursorAdapter) l.getAdapter(); Cursor c = cursorAdapter.getCursor(); c.moveToPosition(position - l.getHeaderViewsCount()); final String stopId = c.getString(COL_ID); final double lat = c.getDouble(COL_LATITUDE); final double lon = c.getDouble(COL_LONGITUDE); HomeActivity.start(getActivity(), stopId, lat, lon); } protected class StopData { private final String id; private final String name; private final String dir; private final String uiName; public StopData(Cursor c, int row) { c.moveToPosition(row); id = c.getString(COL_ID); name = c.getString(COL_NAME); dir = c.getString(COL_DIRECTION); uiName = c.getString(COL_UI_NAME); } public String getId() { return id; } public String getName() { return name; } public String getDir() { return dir; } public String getUiName() { return uiName; } public ArrivalsListActivity.Builder getArrivalsList() { return new ArrivalsListActivity.Builder(getActivity(), id).setStopName(name).setStopDirection(dir); } } }