Display dimensions

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 /* Copyright 2023 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.displaydimensions  import android.os.Bundle import android.util.Log import com.esri.arcgismaps.sample.sampleslib.EdgeToEdgeCompatActivity import androidx.databinding.DataBindingUtil import androidx.lifecycle.lifecycleScope import com.arcgismaps.ApiKey import com.arcgismaps.ArcGISEnvironment import com.arcgismaps.mapping.MobileMapPackage import com.arcgismaps.mapping.layers.DimensionLayer import com.esri.arcgismaps.sample.displaydimensions.databinding.DimensionsDialogLayoutBinding import com.esri.arcgismaps.sample.displaydimensions.databinding.DisplayDimensionsActivityMainBinding import com.google.android.material.dialog.MaterialAlertDialogBuilder import com.google.android.material.snackbar.Snackbar import kotlinx.coroutines.launch import java.io.File  class MainActivity : EdgeToEdgeCompatActivity() {   private val provisionPath: String by lazy {  getExternalFilesDir(null)?.path.toString() + File.separator + getString(R.string.display_dimensions_app_name)  }   private val activityMainBinding: DisplayDimensionsActivityMainBinding by lazy {  DataBindingUtil.setContentView(this, R.layout.display_dimensions_activity_main)  }   private val mapView by lazy {  activityMainBinding.mapView  }   private val optionsButton by lazy {  activityMainBinding.optionsButton  }   // keep an instance of the MapView's dimension layer  private var dimensionLayer: DimensionLayer? = null   // track if the layer is enabled  private var isDimensionLayerEnabled: Boolean = true   // track if the custom definition is enabled  private var isDefinitionEnabled: Boolean = false   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)   // check if the .mmpk file exits  val mmpkFile = File(provisionPath, getString(R.string.file_name))  if (!mmpkFile.exists()) return showError("Mobile map package file does not exist.")   // create and load a mobile map package  val mobileMapPackage = MobileMapPackage(mmpkFile.path)   lifecycleScope.launch {  // load the mobile map package  mobileMapPackage.load().getOrElse {  return@launch showError("Failed to load the mobile map package: ${it.message}")  }  // if the loaded mobile map package does not contain a map  if (mobileMapPackage.maps.isEmpty()) {  return@launch showError("Mobile map package does not contain a map")  }   // add the map from the mobile map package to the map view,  // and set a min scale to maintain dimension readability  mapView.map = mobileMapPackage.maps[0]  mapView.map?.minScale = 35000.0   // set the dimension layer within the map  dimensionLayer = mapView.map?.operationalLayers?.firstOrNull { layer ->  layer is DimensionLayer  } as DimensionLayer   }   optionsButton.setOnClickListener {  // inflate the dialog layout and get references to each of its components  val dialogBinding = DimensionsDialogLayoutBinding.inflate(layoutInflater)  dialogBinding.dimensionLayerSwitch.apply {  isChecked = isDimensionLayerEnabled  setOnCheckedChangeListener { _, isEnabled ->  // set the visibility of the dimension layer  dimensionLayer?.isVisible = isEnabled  isDimensionLayerEnabled = isEnabled  }  }  dialogBinding.definitionSwitch.apply {  isChecked = isDefinitionEnabled  setOnCheckedChangeListener { _, isEnabled ->  // set a definition expression to show dimension lengths of  // greater than or equal to 450m when the checkbox is selected,  // or to reset the definition expression to show all  // dimension lengths when unselected  val defExpression = if (isEnabled) "DIMLENGTH >= 450" else ""  dimensionLayer?.definitionExpression = defExpression  isDefinitionEnabled = isEnabled  }  }   // set up the dialog  MaterialAlertDialogBuilder(this).apply {  setView(dialogBinding.root)  setTitle("${getString(R.string.settings)}: ${dimensionLayer?.name}")  }.show()  }  }   private fun showError(message: String) {  Log.e(localClassName, message)  Snackbar.make(mapView, message, Snackbar.LENGTH_SHORT).show()  } }