Set initial map location

/* Copyright 2025 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.setinitialmaplocation

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.runtime.Composable
import com.arcgismaps.ApiKey
import com.arcgismaps.ArcGISEnvironment
import com.esri.arcgismaps.sample.sampleslib.theme.SampleAppTheme
import com.esri.arcgismaps.sample.setinitialmaplocation.screens.SetInitialMapLocationScreen

class MainActivity : ComponentActivity() {

    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)

        setContent {
            SampleAppTheme {
                SetInitialMapLocationApp()
            }
        }
    }

    @Composable
    private fun SetInitialMapLocationApp() {
        Surface(color = MaterialTheme.colorScheme.background) {
            SetInitialMapLocationScreen(
                sampleName = getString(R.string.set_initial_map_location_app_name)
            )
        }
    }
}

/* Copyright 2025 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.setinitialmaplocation.components

import android.app.Application
import androidx.lifecycle.AndroidViewModel
import androidx.lifecycle.viewModelScope
import com.arcgismaps.mapping.ArcGISMap
import com.arcgismaps.mapping.BasemapStyle
import com.arcgismaps.mapping.Viewpoint
import com.esri.arcgismaps.sample.sampleslib.components.MessageDialogViewModel
import kotlinx.coroutines.launch

/**
 * ViewModel that prepares an ArcGISMap with an initial viewpoint.
 */
class SetInitialMapLocationViewModel(application: Application) : AndroidViewModel(application) {

    // Create an ArcGISMap with an imagery basemap and set an initial viewpoint.
    val arcGISMap = ArcGISMap(BasemapStyle.ArcGISImagery).apply {
            initialViewpoint = Viewpoint(latitude = -33.867886, longitude = -63.985, scale = 10_000.0)
    }

    // Message dialog view model used to present errors to the user
    val messageDialogVM = MessageDialogViewModel()

    init {
        // Load the map asynchronously and handle possible failures by showing a message dialog.
        viewModelScope.launch {
            arcGISMap.load().onFailure { throwable ->
                messageDialogVM.showMessageDialog(throwable)
            }
        }
    }
}

/* Copyright 2025 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.setinitialmaplocation.screens

import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Scaffold
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.lifecycle.viewmodel.compose.viewModel
import com.arcgismaps.toolkit.geoviewcompose.MapView
import com.esri.arcgismaps.sample.setinitialmaplocation.components.SetInitialMapLocationViewModel
import com.esri.arcgismaps.sample.sampleslib.components.MessageDialog
import com.esri.arcgismaps.sample.sampleslib.components.SampleTopAppBar

/**
 * A simple screen that displays the map provided by [SetInitialMapLocationViewModel].
 * The map is centered at the initial viewpoint defined in the ViewModel.
 */
@Composable
fun SetInitialMapLocationScreen(sampleName: String) {
    val viewModel: SetInitialMapLocationViewModel = viewModel()

    Scaffold(
        topBar = { SampleTopAppBar(title = sampleName) },
        content = { padding ->
            MapView(
                modifier = Modifier
                    .fillMaxWidth()
                    .padding(padding),
                arcGISMap = viewModel.arcGISMap
            )

            // Display any error messages surfaced by the ViewModel
            viewModel.messageDialogVM.apply {
                if (dialogStatus) {
                    MessageDialog(
                        title = messageTitle,
                        description = messageDescription,
                        onDismissRequest = ::dismissDialog
                    )
                }
            }
        }
    )
}