Create mobile geodatabase

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278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 /* Copyright 2022 Esri  *  * 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 com.esri.arcgismaps.sample.createmobilegeodatabase  import android.app.Dialog import android.content.Intent import android.os.Bundle import android.util.Log import android.widget.TextView import com.esri.arcgismaps.sample.sampleslib.EdgeToEdgeCompatActivity import androidx.core.content.FileProvider import androidx.databinding.DataBindingUtil import androidx.lifecycle.lifecycleScope import com.arcgismaps.ApiKey import com.arcgismaps.ArcGISEnvironment import com.arcgismaps.LoadStatus import com.arcgismaps.data.FieldDescription import com.arcgismaps.data.FieldType import com.arcgismaps.data.Geodatabase import com.arcgismaps.data.GeodatabaseFeatureTable import com.arcgismaps.data.QueryParameters import com.arcgismaps.data.TableDescription import com.arcgismaps.geometry.GeometryType import com.arcgismaps.geometry.Point import com.arcgismaps.geometry.SpatialReference import com.arcgismaps.mapping.ArcGISMap import com.arcgismaps.mapping.BasemapStyle import com.arcgismaps.mapping.Viewpoint import com.arcgismaps.mapping.layers.FeatureLayer import com.esri.arcgismaps.sample.createmobilegeodatabase.databinding.CreateMobileGeodatabaseActivityMainBinding import com.esri.arcgismaps.sample.createmobilegeodatabase.databinding.TableLayoutBinding import com.esri.arcgismaps.sample.createmobilegeodatabase.databinding.TableRowBinding import com.google.android.material.button.MaterialButton import com.google.android.material.snackbar.Snackbar import kotlinx.coroutines.launch import java.io.File import java.time.Instant  class MainActivity : EdgeToEdgeCompatActivity() {   // set up data binding for the activity  private val activityMainBinding: CreateMobileGeodatabaseActivityMainBinding by lazy {  DataBindingUtil.setContentView(this, R.layout.create_mobile_geodatabase_activity_main)  }   private val mapView by lazy {  activityMainBinding.mapView  }   private val createButton: MaterialButton by lazy {  activityMainBinding.createButton  }   private val viewTableButton: MaterialButton by lazy {  activityMainBinding.viewTableButton  }   private val featureCountTextView: TextView by lazy {  activityMainBinding.featureCount  }   // feature table created using mobile geodatabase and added to the MapView  private var featureTable: GeodatabaseFeatureTable? = null   // mobile geodatabase used to create and store  // the feature attributes (LocationHistory.geodatabase)  private var geodatabase: Geodatabase? = null    override fun onCreate(savedInstanceState: Bundle?) {  super.onCreate(savedInstanceState)   // authentication with an API key or named user is  // required to access basemaps and other location services  ArcGISEnvironment.apiKey = ApiKey.create(BuildConfig.ACCESS_TOKEN)  lifecycle.addObserver(mapView)   lifecycleScope.launch {  mapView.onSingleTapConfirmed.collect { tapConfirmedEvent ->  tapConfirmedEvent.mapPoint?.let {  // create a feature on where the user clicked  addFeature(it)  }  }  }   // displays a dialog to show the attributes of each feature in a feature table  viewTableButton.setOnClickListener {  lifecycleScope.launch {  displayTable()  }  }   // opens a share-sheet with the "LocationHistory.geodatabase" file  createButton.setOnClickListener {  // close the mobile geodatabase before sharing  geodatabase?.close()   // get the URI of the geodatabase file using FileProvider  val geodatabaseURI = FileProvider.getUriForFile(  this,  getString(R.string.create_mobile_geodatabase_provider_authority),  File(geodatabase?.path.toString())  )   // set up the sharing intent with the geodatabase URI  val geodatabaseIntent = Intent(Intent.ACTION_SEND).apply {  type = "*/*"  putExtra(Intent.EXTRA_STREAM, geodatabaseURI)  }   // open the Android share sheet  startActivity(geodatabaseIntent)  }  }    /**  * Create and load a new geodatabase file with TableDescription fields  */  private fun createGeodatabase() {  // define the path and name of the geodatabase file  // note: the path defined must be non-empty, available,  // allow read/write access, and end in ".geodatabase"  val file = File(getExternalFilesDir(null)?.path, "/LocationHistory.geodatabase")  if (file.exists()) {  file.delete()  }  // close the existing geodatabase  geodatabase?.close()  lifecycleScope.launch {  // create a geodatabase file at the file path  Geodatabase.create(file.path).onSuccess { geodatabase ->  // keep the instance of the new geodatabase for sharing  this@MainActivity.geodatabase = geodatabase  createGeodatabaseFeatureTable()  }.onFailure {  showError(it.message.toString())  }   }  }   /**  * Create a new [featureTable] using a custom table description  * and add the feature layer to the MapView.  */  private suspend fun createGeodatabaseFeatureTable() {  // construct a table description which stores features as points on map  val tableDescription =  TableDescription(  "LocationHistory",  SpatialReference.wgs84(),  GeometryType.Point  )  // set up the fields to the table,  // Field.Type.OID is the primary key of the SQLite table  // Field.Type.DATE is a date column used to store a Calendar date  // FieldDescriptions can be a SHORT, INTEGER, GUID, FLOAT, DOUBLE, DATE, TEXT, OID, GLOBALID, BLOB, GEOMETRY, RASTER, or XML.  tableDescription.fieldDescriptions.addAll(  listOf(  FieldDescription("oid", FieldType.Oid),  FieldDescription("collection_timestamp", FieldType.Date)  )  )   // set any properties not needed to false  tableDescription.apply {  hasAttachments = false  hasM = false  hasZ = false  }   // add a new table to the geodatabase by creating one from the tableDescription  geodatabase?.createTable(tableDescription)?.onSuccess { featureTable ->  // get the result of the loaded "LocationHistory" table  this.featureTable = featureTable  // create a feature layer for the map using the GeodatabaseFeatureTable  val featureLayer = FeatureLayer.createWithFeatureTable(featureTable)  mapView.map?.operationalLayers?.add(featureLayer)  // display the current count of features in the FeatureTable  featureCountTextView.text =  "Number of features added: ${featureTable.numberOfFeatures}"  }?.onFailure {  showError(it.message.toString())  }  }   /**  * Create a feature with attributes on map click and add it to the [featureTable]  * Also, updates the TotalFeatureCount on the screen  */  private fun addFeature(mapPoint: Point) {  // set up the feature attributes  val featureAttributes = mutableMapOf<String, Any>()  featureAttributes["collection_timestamp"] = Instant.now()   // create a new feature at the mapPoint  val feature = featureTable?.createFeature(featureAttributes, mapPoint)  ?: return showError("Error creating feature using attributes")   lifecycleScope.launch {  // add the feature to the feature table  featureTable?.addFeature(feature)?.onSuccess {  // feature added successfully, update count  featureCountTextView.text =  "Number of features added: ${featureTable?.numberOfFeatures}"  // enable table button since at least 1 feature loaded on the GeodatabaseFeatureTable  viewTableButton.isEnabled = true  }?.onFailure {  showError(it.message.toString())  }  }  }   /**  * Displays a dialog with the table of features  * added to the GeodatabaseFeatureTable [featureTable]  */  private suspend fun displayTable() {  // query all the features loaded to the table  featureTable?.queryFeatures(QueryParameters())?.onSuccess { queryResults ->  // inflate the table layout  val tableLayoutBinding = TableLayoutBinding.inflate(layoutInflater)  // set up a dialog to be displayed  Dialog(this).apply {  setContentView(tableLayoutBinding.root)  setCancelable(true)  // grab the instance of the TableLayout  val table = tableLayoutBinding.tableLayout  // iterate through each feature to add to the TableLayout  queryResults.forEach { feature ->  // prepare the table row  val tableRowBinding = TableRowBinding.inflate(layoutInflater).apply {  oid.text = feature.attributes["oid"].toString()  collectionTimestamp.text =  (feature.attributes["collection_timestamp"] as Instant).toString()  }  // add the row to the TableLayout  table.addView(tableRowBinding.root)  }  }.show()  }?.onFailure {  showError(it.message.toString())  }  }   /**  * Called on app launch or when Android share sheet is closed  */  private fun setMapView() {  // create and add a map with a navigation night basemap style  mapView.map = ArcGISMap(BasemapStyle.ArcGISTopographic)  mapView.setViewpoint(Viewpoint(41.5, -100.0, 100_000_000.0))   lifecycleScope.launch {  mapView.map?.loadStatus?.collect { loadStatus ->  if (loadStatus == LoadStatus.Loaded) {  // clear any feature layers displayed on the map  mapView.map?.operationalLayers?.clear()  // disable the button since no features are displayed  viewTableButton.isEnabled = false  // create a new geodatabase file to add features into the feature table  createGeodatabase()  } else if (loadStatus is LoadStatus.FailedToLoad) {  showError("Error loading MapView: ${loadStatus.error.message}")  }  }  }  }   override fun onResume() {  super.onResume()  // set up map view and create new geodatabase file  // on every app launch or on share sheet close  setMapView()  }   override fun onDestroy() {  // close the mobile geodatabase before destroy  geodatabase?.close()  super.onDestroy()  }   private fun showError(message: String) {  Log.e(localClassName, message)  Snackbar.make(mapView, message, Snackbar.LENGTH_SHORT).show()  } }  // Custom FileProvider for handling file sharing class CreateMobileGeodatabaseFileProvider : FileProvider()