Java tutorial
/* * GeoSolutions - MapstoreMobile - GeoSpatial Framework on Android based devices * Copyright (C) 2014 GeoSolutions (www.geo-solutions.it) * * 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 it.geosolutions.geocollect.android.core.mission; import it.geosolutions.android.map.MapsActivity; import it.geosolutions.android.map.fragment.MapFragment; import it.geosolutions.android.map.model.Layer; import it.geosolutions.android.map.model.MSMMap; import it.geosolutions.android.map.utils.SpatialDbUtils; import it.geosolutions.android.map.wfs.geojson.feature.Feature; import it.geosolutions.geocollect.android.app.BuildConfig; import it.geosolutions.geocollect.android.core.GeoCollectApplication; import it.geosolutions.geocollect.android.app.R; import it.geosolutions.geocollect.android.core.form.FormEditActivity; import it.geosolutions.geocollect.android.core.form.utils.FormBuilder; import it.geosolutions.geocollect.android.core.mission.utils.MissionUtils; import it.geosolutions.geocollect.android.core.mission.utils.PersistenceUtils; import it.geosolutions.geocollect.model.config.MissionTemplate; import it.geosolutions.geocollect.model.viewmodel.Field; import it.geosolutions.geocollect.model.viewmodel.type.XType; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import jsqlite.Exception; import jsqlite.Stmt; import org.mapsforge.core.model.GeoPoint; import android.app.Activity; import android.content.Intent; import android.graphics.Color; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.LoaderManager.LoaderCallbacks; import android.support.v4.content.AsyncTaskLoader; import android.support.v4.content.Loader; import android.util.Log; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.ScrollView; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; import com.vividsolutions.jts.geom.Point; /** * A fragment representing a single Pending Mission detail screen. This fragment * is either contained in a {@link PendingMissionListActivity} in two-pane mode * (on tablets) or a {@link PendingMissionDetailActivity} on handsets. */ public class PendingMissionDetailFragment extends MapFragment implements LoaderCallbacks<Void> { /** * Tag for logging */ public static final String TAG = "MissionDetail"; public static final int EDIT_ACTIVITY_CODE = 0; /** * The fragment argument representing the item ID that this fragment * represents. */ public static final String ARG_ITEM_ID = "item_id"; public static final String ARG_ITEM_FEATURE = "item_FEATURE"; /** * The <ScrollView> that display fragment content */ private ScrollView mScrollView; /** * The <LinearLayout> inside the <ScrollView> * This displays dynamic content as the other forms. */ private LinearLayout mFormView; /** * <ProgressBar> for loading */ private ProgressBar mProgressView; private boolean mDone; protected Mission mission; public static int DEFAULT_COLOR = Color.GRAY; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (getArguments().containsKey(ARG_ITEM_ID)) { // TODO: get the Feature from db Log.d(TAG, "onCreate() ARG_ITEM_ID: " + getArguments().getString(ARG_ITEM_ID)); } setHasOptionsMenu(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Log.d(TAG, "onCreateView(): container = " + container + "savedInstanceState = " + savedInstanceState); if (mScrollView == null) { // normally inflate the view hierarchy mScrollView = (ScrollView) inflater.inflate(R.layout.preview_page_fragment, container, false); mFormView = (LinearLayout) mScrollView.findViewById(R.id.previewcontent); mProgressView = (ProgressBar) mScrollView.findViewById(R.id.loading); } else { // mScrollView is still attached to the previous view hierarchy // we need to remove it and re-attach it to the current one ViewGroup parent = (ViewGroup) mScrollView.getParent(); parent.removeView(mScrollView); } //TODO it should be false because orientation change can // have different layout (for map view ) //setRetainInstance(true); return mScrollView; } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { // Remove the button to open the full map MenuItem full_map = menu.findItem(R.id.full_map); if (full_map != null) { menu.removeItem(R.id.full_map); } inflater.inflate(R.menu.nav_map_editable, menu); } /* (non-Javadoc) * @see com.actionbarsherlock.app.SherlockFragment#onOptionsItemSelected(com.actionbarsherlock.view.MenuItem) */ @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.accept) { //check if this mission was already marked as uploadable and is going to be altered final String gcid = MissionUtils.getFeatureGCID(mission.getOrigin()); HashMap<String, ArrayList<String>> uploadables = PersistenceUtils.loadUploadables(getActivity()); final String table = mission.getTemplate().schema_sop.localFormStore; final ArrayList<String> ids = uploadables.get(table); //if an entry exists, remove it and save if (ids != null && ids.size() > 0 && ids.contains(gcid)) { ids.remove(gcid); uploadables.put(table, ids); PersistenceUtils.saveUploadables(getActivity(), uploadables); } Intent i = new Intent(getSherlockActivity(), FormEditActivity.class); i.putExtra("MISSION", mission); startActivityForResult(i, EDIT_ACTIVITY_CODE); return true; } else if (id == R.id.single_map) { final GeoPoint geoPoint = getOriginGeoPoint(); if (geoPoint != null) { Intent mapIntent = new Intent(getSherlockActivity(), SimpleMapActivity.class); mapIntent.putExtra(SimpleMapActivity.ARG_PRIORITY_COLOR, getPriorityColor()); mapIntent.putExtra(SimpleMapActivity.ARG_FIRST_POINT_LAT, geoPoint.latitude); mapIntent.putExtra(SimpleMapActivity.ARG_FIRST_POINT_LON, geoPoint.longitude); mapIntent.putExtra(SimpleMapActivity.ARG_ZOOM, ((byte) 18)); final GeoPoint updatedPoint = getUpdatedGeoPoint(); if (updatedPoint != null) { mapIntent.putExtra(SimpleMapActivity.ARG_SECOND_POINT_LAT, updatedPoint.latitude); mapIntent.putExtra(SimpleMapActivity.ARG_SECOND_POINT_LON, updatedPoint.longitude); } MissionTemplate t = ((GeoCollectApplication) getActivity().getApplication()).getTemplate(); MSMMap m = SpatialDbUtils.mapFromDb(); for (Iterator<Layer> it = m.layers.iterator(); it.hasNext();) { Layer layer = it.next(); if (!(layer.getTitle().equals(t.schema_seg.localSourceStore) || layer.getTitle().equals(t.schema_sop.localFormStore) || layer.getTitle() .equals(t.schema_seg.localSourceStore + MissionTemplate.NEW_NOTICE_SUFFIX))) { Log.d(this.getClass().getSimpleName(), layer.getTitle() + " not corresponding to current schema " + t.schema_seg.localSourceStore); it.remove(); } } mapIntent.putExtra(MapsActivity.MSM_MAP, m); startActivity(mapIntent); } else { Log.e(TAG, "could not retrieve geopoint"); } } else if (id == R.id.navigate) { //start an intent to navigate to this position GeoPoint geoPoint = getUpdatedGeoPoint(); if (geoPoint == null) { geoPoint = getOriginGeoPoint(); } if (geoPoint == null) { Log.e(TAG, "no coordinate to navigate to available"); return super.onOptionsItemSelected(item); } /** * http://stackoverflow.com/questions/5801684/intent-to-start-a-navigation-activity * * The bad news is, there isn't a standard Intent URI for navigation. * * possibilities : * * Uri.parse("google.navigation:q= lat,lon) //won't start navigation * Uri.parse("geo:latitude,longitude //will only zoom map on position * Uri.parse("http://maps.google.com/maps?daddr=lat,lon) worked best for now * * problematic for users without google maps App but they should be few ?! */ // String uri_string = String.format("google.navigation:q%f",geoPoint.latitude,geoPoint.longitude); String uri_string = String.format("http://maps.google.com/maps?daddr=%s,%s", Double.toString(geoPoint.latitude), Double.toString(geoPoint.longitude)); Log.d(TAG, "uri " + uri_string); Intent navIntent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(uri_string)); startActivity(navIntent); } return super.onOptionsItemSelected(item); } /** * Return the color code of the priority field of the mission * Default is Color.GRAY * @return */ public int getPriorityColor() { Field colorField = getField(XType.separatorWithIcon); if (colorField == null) { return DEFAULT_COLOR; } HashMap<String, String> colors = mission.getTemplate().priorityValuesColors; final String key = mission.getValueAsString(getActivity(), colorField); final String color = colors.get(key); if (color == null) { return DEFAULT_COLOR; } try { return Color.parseColor(color); } catch (IllegalArgumentException iae) { if (BuildConfig.DEBUG) { Log.w(TAG, "Could not parse color: " + color); } return DEFAULT_COLOR; } } /** * reads out the missions origin GeoPoint by retrieving the mapView field and using it * to extract it out of the missions tags * @return the geopoint of this mission */ public GeoPoint getOriginGeoPoint() { final Field mapField = getField(XType.mapViewPoint); if (mapField == null) { return null; } //extract the point GeoPoint geoPoint = null; List<String> tags = MissionUtils.getTags(mapField.value); if (tags != null && tags.size() == 1) { Point geom = (Point) mission.getValueByTag(getActivity(), tags.get(0)); if (geom != null) { if (!geom.isEmpty()) { double lat = geom.getY(); double lon = geom.getX(); geoPoint = new GeoPoint(lat, lon); } } } return geoPoint; } /** * accesses the database to acquire an updated position for this mission * @return the updated GeoPoint or null if none available */ public GeoPoint getUpdatedGeoPoint() { final Field f = getField(XType.mapViewPoint); final String tableName = getTablename(); // Default ID String originIDString = MissionUtils.getMissionGCID(mission); final String s = "SELECT Y(" + f.fieldId + "), X(" + f.fieldId + ") FROM '" + tableName + "' WHERE " + Mission.ORIGIN_ID_STRING + " = '" + originIDString + "';"; if (mission == null || mission.db == null) { Log.w(TAG, "Cannot retrieve mission database"); return null; } try { if (jsqlite.Database.complete(s)) { Stmt st = mission.db.prepare(s); if (st.step()) { final GeoPoint p = new GeoPoint(st.column_double(0), st.column_double(1)); st.close(); return p; } } else { if (BuildConfig.DEBUG) { Log.w(TAG, "Query is not complete:\n" + s); } } } catch (Exception e) { Log.e(TAG, "Error retrieving updatedPoint", e); } return null; } /** * returns a field from the default templates previews form * @param xType to search for * @return the field according to the xType */ public Field getField(final XType xType) { final MissionTemplate t = MissionUtils.getDefaultTemplate(getSherlockActivity()); for (Field f : t.preview.fields) { if (f.xtype == xType) { return f; } } return null; } /** * gets the tablename of this mission's results * @return */ public String getTablename() { String tableName = mission.getTemplate().id + "_data"; if (mission.getTemplate().schema_sop != null && mission.getTemplate().schema_sop.localFormStore != null && !mission.getTemplate().schema_sop.localFormStore.isEmpty()) { tableName = mission.getTemplate().schema_sop.localFormStore; } return tableName; } /** * Handle the results */ @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { Log.d(TAG, "onActivityResult()"); super.onActivityResult(requestCode, resultCode, data); if (requestCode == EDIT_ACTIVITY_CODE) { MissionTemplate t = MissionUtils.getDefaultTemplate(getSherlockActivity()); PersistenceUtils.loadPageData(t.preview, mFormView, mission, getSherlockActivity(), true); } } /** * Fills the Page layout with widgets based on page template */ private void buildForm() { // if the view hierarchy was already build, skip this if (mDone) return; MissionTemplate t = MissionUtils.getDefaultTemplate(getSherlockActivity()); FormBuilder.buildForm(getActivity(), this.mFormView, t.preview.fields, mission);//TODO page is not enough, some data should be accessible like constants and data PersistenceUtils.loadPageData(t.preview, mFormView, mission, getSherlockActivity(), false); // the view hierarchy is now complete mDone = true; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); Log.d(TAG, "onActivityCreated(): savedInstanceState = " + savedInstanceState); if (savedInstanceState == null) { toggleLoading(true); getLoaderManager().restartLoader(0, null, this); } else { toggleLoading(true); Feature origin = (Feature) savedInstanceState.getSerializable(ARG_ITEM_FEATURE); Mission m = new Mission(); m.setTemplate(MissionUtils.getDefaultTemplate(getSherlockActivity())); m.setOrigin(origin); if (getSherlockActivity() instanceof PendingMissionDetailActivity) { Log.d(TAG, "Loader: Connecting to Activity database"); m.db = ((PendingMissionDetailActivity) getSherlockActivity()).spatialiteDatabase; } else if (getSherlockActivity() instanceof PendingMissionListActivity) { Log.d(TAG, "Loader: Connecting to Activity database"); m.db = ((PendingMissionListActivity) getSherlockActivity()).spatialiteDatabase; } else { Log.w(TAG, "Loader: Could not connect to Activity database"); } mission = m; toggleLoading(false); buildForm(); } } /** * Load the mission and template data either from the database or from the intent */ public Loader<Void> onCreateLoader(int id, Bundle args) { Log.d(TAG, "onCreateLoader(): id=" + id); Loader<Void> loader = new AsyncTaskLoader<Void>(getActivity()) { @Override public Void loadInBackground() { Activity activity = getSherlockActivity(); Feature myFeature = (Feature) getArguments().getSerializable(ARG_ITEM_FEATURE); Mission m = new Mission(); m.setTemplate(MissionUtils.getDefaultTemplate(activity)); m.setOrigin(myFeature); if (activity instanceof PendingMissionDetailActivity) { Log.d(TAG, "Loader: Connecting to Activity database"); m.db = ((PendingMissionDetailActivity) activity).spatialiteDatabase; } else if (activity instanceof PendingMissionListActivity) { Log.d(TAG, "Loader: Connecting to Activity database"); m.db = ((PendingMissionListActivity) activity).spatialiteDatabase; } else { Log.w(TAG, "Loader: Could not connect to Activity database"); } mission = m; return null; } }; //TODO create loader; loader.forceLoad(); return loader; } @Override public void onSaveInstanceState(Bundle outState) { if (mission != null) { //save the origin outState.putSerializable(ARG_ITEM_FEATURE, mission.getOrigin()); } } public void onLoadFinished(Loader<Void> id, Void result) { Log.d(TAG, "onLoadFinished(): id=" + id); toggleLoading(false); buildForm(); } public void onLoaderReset(Loader<Void> loader) { Log.d(TAG, "onLoaderReset(): id=" + loader.getId()); } private void toggleLoading(boolean show) { mProgressView.setVisibility(show ? View.VISIBLE : View.GONE); mFormView.setGravity(show ? Gravity.CENTER : Gravity.TOP); } @Override public void onDestroyView() { super.onDestroyView(); Log.d(TAG, "onDestroyView()"); } @Override public void onDestroy() { super.onDestroy(); Log.d(TAG, "onDestroy()"); } @Override public void onDetach() { super.onDetach(); Log.d(TAG, "onDetach()"); } }