While reading the code I noticed that you are using a LocationDisplay with the Composable MapView. To be able to set a LocationDisplay, you would need to define an ApplicationContext:
ArcGISEnvironment.applicationContext = this
// Alternatively, you can set the application context using the
// LocationDisplay helper function from a Composable scope:
// Checks that ArcGISEnvironment.applicationContext is set and if not, sets one.
val myLocationDisplay = rememberLocationDisplay()
I can load a WMS layer by modifying your code using the above changes:
import android.os.Bundle
import android.util.Log
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.lifecycle.ViewModel
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import androidx.lifecycle.viewModelScope
import androidx.lifecycle.viewmodel.compose.viewModel
import com.arcgismaps.ApiKey
import com.arcgismaps.ArcGISEnvironment
import com.arcgismaps.mapping.ArcGISMap
import com.arcgismaps.mapping.Basemap
import com.arcgismaps.mapping.layers.WebTiledLayer
import com.arcgismaps.mapping.layers.WmsLayer
import com.arcgismaps.mapping.layers.WmsService
import com.arcgismaps.mapping.view.GraphicsOverlay
import com.arcgismaps.mapping.view.LocationDisplay
import com.arcgismaps.toolkit.geoviewcompose.MapView
import com.esri.arcgismaps.sample.sampleslib.theme.SampleAppTheme
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.launch
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.API_KEY)
// application context is required for LocationDisplay
ArcGISEnvironment.applicationContext = this
setContent {
SampleAppTheme {
EsriMap()
}
}
}
@Composable
fun EsriMap() {
val mapViewModel: MapViewModel = viewModel()
val mapState by mapViewModel.mapStateFlow.collectAsStateWithLifecycle()
MapView(
modifier = Modifier
.fillMaxSize(),
arcGISMap = mapState.map,
graphicsOverlays = mapState.graphicOverlays,
locationDisplay = mapState.locationDisplay
)
}
}
class MapViewModel : ViewModel() {
private val _mapStateDataFlow = MutableStateFlow(
ArcGisMapData(
map = ArcGISMap(Basemap(WebTiledLayer.create("https://tile.openstreetmap.org/{level}/{col}/{row}.png"))),
graphicOverlays = listOf(GraphicsOverlay()),
locationDisplay = LocationDisplay()
)
)
val mapStateFlow = _mapStateDataFlow.asStateFlow()
init {
viewModelScope.launch {
val wmsService =
WmsService(url = "http://geodata.nationaalgeoregister.nl/cbsprovincies/ows?SERVICE=WMS&request=Getcapabilities")
wmsService.load().onSuccess {
val wmsLayer = WmsLayer(wmsService.serviceInfo!!.layerInfos)
wmsLayer.load().onSuccess {
Log.e("TAG", "load success")
}.onFailure { exception ->
Log.e("TAG", "${exception.message}: Failed to load WMS layer")
}
}.onFailure { exception ->
Log.e("TAG", "${exception.message}: Failed to load WMS layer")
}
}
}
}
data class ArcGisMapData(
var map: ArcGISMap,
var graphicOverlays: List<GraphicsOverlay>,
var locationDisplay: LocationDisplay
)
