Java tutorial
/* * Project: NextGIS Mobile * Purpose: Mobile GIS for Android. * Author: Stanislav Petriakov, becomeglory@gmail.com * ***************************************************************************** * Copyright (c) 2016 NextGIS, info@nextgis.com * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser 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 Lesser Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.nextgis.maplibui.activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.design.widget.Snackbar; import android.support.v4.content.ContextCompat; import android.support.v7.widget.Toolbar; import android.view.MenuItem; import android.view.View; import android.widget.TextView; import android.widget.Toast; import com.inqbarna.tablefixheaders.TableFixHeaders; import com.inqbarna.tablefixheaders.adapters.BaseTableAdapter; import com.nextgis.maplib.api.IGISApplication; import com.nextgis.maplib.api.ILayer; import com.nextgis.maplib.datasource.Feature; import com.nextgis.maplib.datasource.Field; import com.nextgis.maplib.datasource.GeoPoint; import com.nextgis.maplib.map.MapBase; import com.nextgis.maplib.map.MapDrawable; import com.nextgis.maplib.map.VectorLayer; import com.nextgis.maplib.util.Constants; import com.nextgis.maplib.util.GeoConstants; import com.nextgis.maplibui.R; import com.nextgis.maplibui.api.IVectorLayerUI; import com.nextgis.maplibui.fragment.BottomToolbar; import com.nextgis.maplibui.util.ConstantsUI; import com.nextgis.maplibui.util.MatrixTableAdapter; import com.nextgis.maplibui.util.SettingsConstantsUI; import java.util.List; import static com.nextgis.maplib.util.Constants.FIELD_ID; public class AttributesActivity extends NGActivity { protected TableFixHeaders mTable; protected VectorLayer mLayer; protected BottomToolbar mToolbar; protected Long mId; protected int mLayerId; protected BroadcastReceiver mReceiver; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_attributes); setToolbar(R.id.main_toolbar); mTable = (TableFixHeaders) findViewById(R.id.attributes); mToolbar = (BottomToolbar) findViewById(R.id.bottom_toolbar); mToolbar.inflateMenu(R.menu.attributes_table); mToolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { int i = item.getItemId(); if (i == R.id.menu_zoom) { IGISApplication application = (IGISApplication) getApplication(); MapDrawable map = (MapDrawable) application.getMap(); if (null != map) { if (mLayer.getGeometryType() == GeoConstants.GTPoint || mLayer.getGeometryType() == GeoConstants.GTMultiPoint) map.zoomToExtent(mLayer.getFeature(mId).getGeometry().getEnvelope(), 18); else map.zoomToExtent(mLayer.getFeature(mId).getGeometry().getEnvelope()); SharedPreferences.Editor edit = PreferenceManager .getDefaultSharedPreferences(AttributesActivity.this).edit(); edit.putFloat(SettingsConstantsUI.KEY_PREF_ZOOM_LEVEL, map.getZoomLevel()); GeoPoint point = map.getMapCenter(); edit.putLong(SettingsConstantsUI.KEY_PREF_SCROLL_X, Double.doubleToRawLongBits(point.getX())); edit.putLong(SettingsConstantsUI.KEY_PREF_SCROLL_Y, Double.doubleToRawLongBits(point.getY())); edit.commit(); } finish(); return true; } else if (i == R.id.menu_delete) { Snackbar snackbar = Snackbar.make(findViewById(R.id.container), getString(R.string.delete_item_done), Snackbar.LENGTH_LONG) .setAction(R.string.undo, new View.OnClickListener() { @Override public void onClick(View view) { } }).setCallback(new Snackbar.Callback() { @Override public void onDismissed(Snackbar snackbar, int event) { super.onDismissed(snackbar, event); if (event == DISMISS_EVENT_MANUAL) return; if (event != DISMISS_EVENT_ACTION) { mLayer.deleteAddChanges(mId); } } @Override public void onShown(Snackbar snackbar) { super.onShown(snackbar); } }); View view = snackbar.getView(); TextView textView = (TextView) view.findViewById(R.id.snackbar_text); textView.setTextColor( ContextCompat.getColor(view.getContext(), com.nextgis.maplibui.R.color.color_white)); snackbar.show(); mToolbar.setVisibility(View.GONE); return true; } else if (i == R.id.menu_edit) { ((IVectorLayerUI) mLayer).showEditForm(AttributesActivity.this, mId, null); return true; } return false; } }); mToolbar.setNavigationIcon(R.drawable.ic_action_cancel_dark); mToolbar.setNavigationOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { mToolbar.setVisibility(View.GONE); } }); mToolbar.setVisibility(View.GONE); mLayerId = Constants.NOT_FOUND; if (savedInstanceState != null) mLayerId = savedInstanceState.getInt(ConstantsUI.KEY_LAYER_ID); else mLayerId = getIntent().getIntExtra(ConstantsUI.KEY_LAYER_ID, mLayerId); mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { mTable.setAdapter(getAdapter()); } }; } @Override protected void onStop() { super.onStop(); unregisterReceiver(mReceiver); } @Override protected void onStart() { super.onStart(); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(Constants.NOTIFY_DELETE); intentFilter.addAction(Constants.NOTIFY_DELETE_ALL); registerReceiver(mReceiver, intentFilter); IGISApplication application = (IGISApplication) getApplication(); MapBase map = application.getMap(); if (null != map) { ILayer layer = map.getLayerById(mLayerId); if (null != layer && layer instanceof VectorLayer) { mLayer = (VectorLayer) layer; mTable.setAdapter(getAdapter()); Toolbar toolbar = (Toolbar) findViewById(R.id.main_toolbar); toolbar.setSubtitle(mLayer.getName()); } else Toast.makeText(this, R.string.error_layer_not_inited, Toast.LENGTH_SHORT).show(); } } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(ConstantsUI.KEY_LAYER_ID, mLayer.getId()); } public BaseTableAdapter getAdapter() { MatrixTableAdapter<String> adapter = new MatrixTableAdapter<>(this); if (mLayer == null) return adapter; List<Long> ids = mLayer.query(null); List<Field> fields = mLayer.getFields(); int rows = ids.size() + 1; for (int i = 0; i < ids.size(); i++) { Feature feature = mLayer.getFeature(ids.get(i)); if (feature == null) { rows = 1; Toast.makeText(this, R.string.error_cache, Toast.LENGTH_LONG).show(); break; } } String[][] data = new String[rows][fields.size() + 1]; data[0][0] = FIELD_ID; for (int i = 0; i < fields.size(); i++) data[0][i + 1] = fields.get(i).getAlias(); if (rows > 1) for (int i = 0; i < ids.size(); i++) { Feature feature = mLayer.getFeature(ids.get(i)); data[i + 1][0] = feature.getId() + ""; for (int j = 0; j < fields.size(); j++) data[i + 1][j + 1] = feature.getFieldValueAsString(fields.get(j).getName()); } adapter.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if (view != null && view instanceof TextView) { Long id = parseLong((String) view.getTag(R.id.text1)); if (id != null) { mId = id; String featureName = String.format(getString(R.string.feature_n), id); mToolbar.setTitle(featureName); String labelField = mLayer.getPreferences() .getString(SettingsConstantsUI.KEY_PREF_LAYER_LABEL, FIELD_ID); if (!labelField.equals(FIELD_ID)) { Feature feature = mLayer.getFeature(id); if (feature != null) { mToolbar.setSubtitle(featureName); featureName = feature.getFieldValueAsString(labelField); mToolbar.setTitle(featureName); } } mToolbar.setVisibility(View.VISIBLE); } } } }); adapter.setInformation(data); return adapter; } private Long parseLong(String string) { try { return Long.parseLong(string); } catch (Exception e) { return null; } } }