Set min and max scale

/* 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.setminandmaxscale

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.setminandmaxscale.screens.SetMinAndMaxScaleScreen

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 {
                SetMinAndMaxScaleApp()
            }
        }
    }

    @Composable
    private fun SetMinAndMaxScaleApp() {
        Surface(color = MaterialTheme.colorScheme.background) {
            SetMinAndMaxScaleScreen(
                sampleName = getString(R.string.set_min_and_max_scale_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.setminandmaxscale.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 for the SetMinAndMaxScale sample.
 */
class SetMinAndMaxScaleViewModel(application: Application) : AndroidViewModel(application) {

    // Expose the map as a mutable state so the Compose UI can observe changes.
    var arcGISMap = ArcGISMap(BasemapStyle.ArcGISStreets).apply {
            // Set an initial viewpoint.
            initialViewpoint = Viewpoint(39.8, -98.6, 10e7)
            // Set sample min and max scales to demonstrate enforcing zoom limits.
            // Note: minScale represents the most zoomed-out denominator and
            // maxScale the most zoomed-in denominator.
            minScale = 8000.0
            maxScale = 2000.0
     }


    // Message dialog VM to show any errors during load.
    val messageDialogVM = MessageDialogViewModel()

    init {
        // Load the map and surface any load failures via the message dialog VM.
        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.setminandmaxscale.screens


import androidx.compose.foundation.layout.fillMaxSize
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.setminandmaxscale.components.SetMinAndMaxScaleViewModel
import com.esri.arcgismaps.sample.sampleslib.components.MessageDialog
import com.esri.arcgismaps.sample.sampleslib.components.SampleTopAppBar

/**
 * Main screen for the SetMinAndMaxScale sample.
 */
@Composable
fun SetMinAndMaxScaleScreen(sampleName: String) {
    val mapViewModel: SetMinAndMaxScaleViewModel = viewModel()

    Scaffold(
        topBar = { SampleTopAppBar(title = sampleName) },
        content = { padding ->
            MapView(
                modifier = Modifier
                    .fillMaxSize()
                    .padding(padding),
                arcGISMap = mapViewModel.arcGISMap
            )
            // Display any load error messages coming from the ViewModel's MessageDialogViewModel
            mapViewModel.messageDialogVM.apply {
                if (dialogStatus) {
                    MessageDialog(
                        title = messageTitle,
                        description = messageDescription,
                        onDismissRequest = ::dismissDialog
                    )
                }
            }
        }
    )
}