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Showing content from https://developers.arcgis.com/kotlin/geocode-and-search/tutorials/search-for-an-address/ below:

Search for an address | ArcGIS Maps SDK for Kotlin

Learn how to find an address or place with a search bar and the geocoding service.

Geocoding is the process of converting address or place text into a location. The geocoding service can search for an address or a place and perform reverse geocoding.

In this tutorial, you use a search bar in the user interface to access the Geocoding service and search for addresses and places.

Mapping and location services guide

For more background information about the topics in this tutorial, visit Geocode in the Mapping and location services guide. To learn more about the service, visit Geocoding service.

Prerequisites

Before starting this tutorial, you need the following:

An ArcGIS Location Platform or ArcGIS Online account.
A development and deployment environment that meets the system requirements.
An IDE for Android development in Kotlin.

Note

It is recommended that you use the latest stable version Android Studio to create this tutorial app. The code described in the steps below, however, should work in any up-to-date Android IDE that supports Kotlin.

Set up authentication

To access the secure ArcGIS location services used in this tutorial, you must implement API key authentication or user authentication using an ArcGIS Location Platform or an ArcGIS Online account.

You can implement API key authentication or user authentication in this tutorial. Compare the differences below:

API key authentication

Users are not required to sign in.
Requires creating an API key credential with the correct privileges.
API keys are long-lived access tokens.
Service usage is billed to the API key owner/developer.
Simplest authentication method to implement.
Recommended approach for new ArcGIS developers.

Learn more in API key authentication.

User authentication

Users are required to sign in with an ArcGIS account.
User accounts must have privilege to access the ArcGIS services used in application.
Requires creating OAuth credentials.
Application uses a redirect URL and client ID.
Service usage is billed to the organization of the user signed into the application.

Learn more in User authentication.

Security and authentication guide

To learn more about the different types of authentication, visit Types of authentication.

Create a new API key access token with privileges to access the secure resources used in this tutorial.

Complete the Create an API key tutorial and create an API key with the following privilege(s):
- Privileges
  - Location services > Basemaps
  - Location services > Geocoding
Copy and paste the API key access token into a safe location. It will be used in a later step.

Create new OAuth credentials to access the secure resources used in this tutorial.

Complete the Create OAuth credentials for user authentication tutorial to obtain a Client ID and Redirect URL.

A Client ID uniquely identifies your app on the authenticating server. If the server cannot find an app with the provided Client ID, it will not proceed with authentication.

The Redirect URL (also referred to as a callback url) is used to identify a response from the authenticating server when the system returns control back to your app after an OAuth login. Since it does not necessarily represent a valid endpoint that a user could navigate to, the redirect URL can use a custom scheme, such as my-app://auth. It is important to make sure the redirect URL used in your app's code matches a redirect URL configured on the authenticating server.
Copy and paste the Client ID and Redirect URL into a safe location. They will be used in a later step.

All users that access this application need account privileges to access the ArcGIS Basemap Styles service and the ArcGIS Geocoding service.

Develop or download

You have two options for completing this tutorial:

Option 1: Develop the code Open an Android Studio project

Open the project you created by completing the Display a map tutorial.
Continue with the following instructions to add a search bar to the user interface and search for an address or place using the ArcGIS Geocoding service.
Modify the old project for use in this new tutorial.
1. On your file system, delete the .idea folder, if present, at the top level of your project.
2. In the Android view, open app > res > values > strings.xml.
  
  In the <string name="app_name"> element, change the text content to Search for an address.
  
  strings.xml
  
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```
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<resources>

    <string name="app_name">Search for an address</string>

</resources>
```
3. In the Android view, open Gradle Scripts > settings.gradle.kts.
  
  Change the value of rootProject.name to "Search for an address".
  
  settings.gradle.kts
  
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```
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dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        google()
        mavenCentral()
        maven { url = uri("https://esri.jfrog.io/artifactory/arcgis") }
    }
}

rootProject.name = "Search for an address"
include(":app")
```
4. Click File > Sync Project with Gradle files. Android Studio will recognize your changes and create a new .idea folder.

Set developer credentials

If you implemented API key authentication in the Display a map tutorial, the API key access token will only have the Basemaps privilege. The Search for an address tutorial requires the Geocoding privilege to search for an address using the LocatorTask. To create an API Key access token that has the Basemaps and Geocoding privileges, see the Set up authentication step and then follow the instructions below.

In the Android view of Android Studio, open app > kotlin+java > com.example.app > MainActivity.

In the onCreate() lifecycle method of the MainActivity class, set the ArcGISEnvironment.apiKeyâ property by calling ApiKey.create(). Pass in your API key access token as a string and don't forget the double quotes. Do this before the setContent block.

MainActivity.kt

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    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        ArcGISEnvironment.apiKey = ApiKey.create("YOUR_ACCESS_TOKEN")

Best Practice: The access token is stored directly in the code as a convenience for this tutorial. Do not store credentials directly in source code in a production environment.

Use the Authenticator toolkit component to manage your OAuth credentials and pass it to the ArcGISEnvironment.

Open the app > kotlin+java > com.example.app > MainActivity.kt file.

Set your clientID and redirectURL values.

MainActivity.kt

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        authenticatorState.oAuthUserConfigurations = listOf(
            OAuthUserConfiguration(

                portalUrl = "https://www.arcgis.com",
                clientId = "YOUR_CLIENT_ID",
                redirectUrl = "YOUR_REDIRECT_URL"

            )
        )

Best Practice: The OAuth credentials are stored directly in the code as a convenience for this tutorial. Do not store credentials directly in source code in a production environment.

Add import statements and some Compose variables

Modify import statements to reference the packages and classes required for this tutorial.

Theme.kt

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@file:OptIn(ExperimentalMaterial3Api::class)

package com.example.app.screens

import android.content.Context
import android.widget.Toast
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Search
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Icon
import androidx.compose.material3.Scaffold
import androidx.compose.material3.SearchBar
import androidx.compose.material3.SearchBarDefaults
import androidx.compose.material3.Text
import androidx.compose.material3.TopAppBar
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalFocusManager
import androidx.compose.ui.res.stringResource
import com.arcgismaps.Color
import com.arcgismaps.geometry.SpatialReference
import com.arcgismaps.mapping.ArcGISMap
import com.arcgismaps.mapping.BasemapStyle
import com.arcgismaps.mapping.Viewpoint
import com.arcgismaps.mapping.symbology.HorizontalAlignment
import com.arcgismaps.mapping.symbology.SimpleMarkerSymbol
import com.arcgismaps.mapping.symbology.SimpleMarkerSymbolStyle
import com.arcgismaps.mapping.symbology.TextSymbol
import com.arcgismaps.mapping.symbology.VerticalAlignment
import com.arcgismaps.mapping.view.Graphic
import com.arcgismaps.mapping.view.GraphicsOverlay
import com.arcgismaps.tasks.geocode.GeocodeParameters
import com.arcgismaps.tasks.geocode.GeocodeResult
import com.arcgismaps.tasks.geocode.LocatorTask
import com.arcgismaps.toolkit.geoviewcompose.MapView
import com.arcgismaps.toolkit.geoviewcompose.MapViewProxy
import com.example.app.R
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Job
import kotlinx.coroutines.launch

In the MainScreen composable, create Compose variables that will be passed to various functions in the MainScreen.kt file.

These are remembered state variables and use either remember() or rememberCoroutineScope()

Briefly, these variables are as follows:

context: The local context of your app.
coroutineScope: Set to rememberCoroutineScope(). You will use this variable to launch a coroutine.
focusManager: A FocusManager will allow you to clear focus from the search bar, dismissing the device keyboard after a search is submitted.
queryText: The address that the user enters in the search bar.
currentJob: The currentJob variable is of type MutableState<Job?>, which references the Kotlin coroutine Job. (It does not reference the interface Job from ArcGIS Maps SDK for Kotlin.) Note that coroutineScope.launch {} returns a Kotlin coroutine Job.
graphicsOverlay: A GraphicsOverlay to hold the text symbol (the search address) and a red square symbol (the found location on the map).
graphicsOverlay: A list of GraphicsOverlay. You pass this list to the MapView.
mapViewProxy: A MapViewProxy, defined in ArcGIS Maps SDK for Kotlin Toolkit, allows you to set the view point on the map view.
currentSpatialReference: The current SpatialReference.

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@Composable
fun MainScreen() {

    val context = LocalContext.current
    val coroutineScope = rememberCoroutineScope()
    // The focus manager is used to dismiss keyboard after search query submission.
    val focusManager = LocalFocusManager.current
    var queryText by remember { mutableStateOf("") }
    val currentJob = remember { mutableStateOf<Job?>(null) }
    val graphicsOverlay = remember { GraphicsOverlay() }
    val graphicsOverlays = remember { listOf(graphicsOverlay) }
    val mapViewProxy = remember { MapViewProxy() }
    val currentSpatialReference = remember { mutableStateOf<SpatialReference?>(null) }

    val map = remember {
        createMap()
    }

    Scaffold(
        topBar = { TopAppBar(title = { Text(text = stringResource(id = R.string.app_name)) }) }
    ) {

            MapView(
                modifier = Modifier.fillMaxSize(),
                arcGISMap = map,

            )

    }

}

Create a function to geocode an address

Geocoding is implemented with a locator, typically created by referencing a service such as the geocoding service or, for offline geocoding, by referencing locator data contained in a mobile package. Geocoding parameters can be used to refine the results, such as setting a maximum number of results or requesting additional attributes in the results.

Define a top-level suspend function named searchAddress(). Declare the parameters shown below.

MainScreen.kt

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suspend fun searchAddress(
    context: Context,
    coroutineScope: CoroutineScope,
    query: String,
    currentSpatialReference: SpatialReference?,
    graphicsOverlay: GraphicsOverlay,
    mapViewProxy: MapViewProxy
) {

}

Create a LocatorTask based on the Geocoding service.

A locator task is used to find the location of an address (geocode) or to interpolate an address for a location (reverse geocode). An address includes any type of information that distinguishes a place. A locator involves finding matching locations for a given address. Reverse-geocoding is the opposite and finds the closest address for a given location.

MainScreen.kt

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suspend fun searchAddress(
    context: Context,
    coroutineScope: CoroutineScope,
    query: String,
    currentSpatialReference: SpatialReference?,
    graphicsOverlay: GraphicsOverlay,
    mapViewProxy: MapViewProxy
) {

    val geocodeServerUri = "https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer"
    val locatorTask = LocatorTask(geocodeServerUri)

}

Create a new GeocodeParameters and define some of its properties.

Add the names of attributes to return to the GeocodeParameters.resultAttributeNames collection. An asterisk (*) indicates all attributes.
Set the maximum number of results to be returned with GeocodeParameters.maxResults. Results are ordered by score, so that the first result has the best match score (ranging from 0 for no match to 100 for the best match).
Set the spatial reference for result locations with GeocodeParameters.outputSpatialReference. By default, the output spatial reference is defined by the geocode service. For optimal performance when displaying the geocode result, you can ensure that returned coordinates match those of the map view by providing the map view's spatial reference.

When geocoding an address, you can optionally provide GeocodeParameters to control certain aspects of the geocoding operation and specify the kinds of results to return from the locator task. Learn more about these parameters in the GeocodeParameters. For a list of attributes returned with geocode results, see Geocoding service output in the ArcGIS services reference.

MainScreen.kt

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suspend fun searchAddress(
    context: Context,
    coroutineScope: CoroutineScope,
    query: String,
    currentSpatialReference: SpatialReference?,
    graphicsOverlay: GraphicsOverlay,
    mapViewProxy: MapViewProxy
) {

    val geocodeServerUri = "https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer"
    val locatorTask = LocatorTask(geocodeServerUri)

    // Create geocode parameters
    val geocodeParameters = GeocodeParameters().apply {
        resultAttributeNames.add("*")
        maxResults = 1
        outputSpatialReference = currentSpatialReference
    }

}

To find the location for the address that the user entered, call LocatorTask.geocode(), passing the query and geocodeParameters variables.

In the .onSuccess block, call the handleGeocodeResults() function (which we will define in a later section). Pass parameters to handleGeocodeResults() as shown below.

The geocode results are implemented as a list of GeocodeResult objects. In this tutorial, either one or zero results will be returned, as the maximum results parameter was set to 1.

MainScreen.kt

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suspend fun searchAddress(
    context: Context,
    coroutineScope: CoroutineScope,
    query: String,
    currentSpatialReference: SpatialReference?,
    graphicsOverlay: GraphicsOverlay,
    mapViewProxy: MapViewProxy
) {

    val geocodeServerUri = "https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer"
    val locatorTask = LocatorTask(geocodeServerUri)

    // Create geocode parameters
    val geocodeParameters = GeocodeParameters().apply {
        resultAttributeNames.add("*")
        maxResults = 1
        outputSpatialReference = currentSpatialReference
    }

    // Search for the address
    locatorTask.geocode(searchText = query, parameters = geocodeParameters)
        .onSuccess { geocodeResults: List<GeocodeResult> ->
            handleGeocodeResults(
                context, coroutineScope, geocodeResults, graphicsOverlay, mapViewProxy
            )
        }.onFailure { error ->
            showMessage(context, "The locatorTask.geocode() call failed: ${error.message}")
        }

}

Create two graphics

You will create a graphic that uses a text symbol to display the address as a string. You will create another graphic that uses a red square to indicate the location on the map.

Define a top-level function named createTextGraphic() and declare a GeocodeResult parameter. For the text of the TextSymbol, use the GeocodeResult.label property. For the geometry of the Graphic, use the GeocodeResult.displayLocation property.

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fun createTextGraphic(geocodeResult: GeocodeResult): Graphic {
    val textSymbol = TextSymbol(
        text = geocodeResult.label,
        color = Color.black,
        size = 18f,
        horizontalAlignment = HorizontalAlignment.Center,
        verticalAlignment = VerticalAlignment.Bottom
    ).apply {
        offsetY = 8f
        haloColor = Color.white
        haloWidth = 2f
    }
    return Graphic(
        geometry = geocodeResult.displayLocation,
        symbol = textSymbol
    )
}

Define a top-level function named createMarkerGraphic() and declare a GeocodeResult parameter. For the geometry of the Graphic, use the GeocodeResult.label property. For the attributes of the Graphic, use the GeocodeResult.attributes property.

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fun createMarkerGraphic(geocodeResult: GeocodeResult): Graphic {
    val simpleMarkerSymbol = SimpleMarkerSymbol(
        style = SimpleMarkerSymbolStyle.Square,
        color = Color.red,
        size = 12.0f
    )
    return Graphic(
        geometry = geocodeResult.displayLocation,
        attributes = geocodeResult.attributes,
        symbol = simpleMarkerSymbol
    )
}

Display the result

The result obtained from the geocode operation can be displayed by adding the two graphics you just created to the map view's graphics overlay.

Tutorial

To learn more about graphics and graphics overlays, see the Add a point, line, and polygon tutorial.

Define a suspend function named handleGeocodeResults(). Declare the parameters shown below.

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fun handleGeocodeResults(
    context: Context,
    coroutineScope: CoroutineScope,
    geocodeResults: List<GeocodeResult>,
    graphicsOverlay: GraphicsOverlay,
    mapViewProxy: MapViewProxy
) {

}

If the geocodeResults list is not empty, do the following: First, get the first GeocodeResult from the geocodeResults list. Next, call createTextGraphic() and createMarkerGraphic(), passing that geocode result to each. Last, add the two graphics to the GraphicsOverlay.

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fun handleGeocodeResults(
    context: Context,
    coroutineScope: CoroutineScope,
    geocodeResults: List<GeocodeResult>,
    graphicsOverlay: GraphicsOverlay,
    mapViewProxy: MapViewProxy
) {

    if (geocodeResults.isNotEmpty()) {
        val geocodeResult = geocodeResults[0]
        // Create a Text graphic to display the address text, and add it to the graphics overlay.
        val textGraphic = createTextGraphic(geocodeResult)
        // Create a red square marker graphic, and add it to the graphics overlay.
        val markerGraphic = createMarkerGraphic(geocodeResult)
        // Clear previous results and add graphics.
        graphicsOverlay.graphics.apply {
            clear()
            add(textGraphic)
            add(markerGraphic)
        }

}

Inside a coroutineScope.launch block, get the display location (which is a Point) from the geocode result and assign it to a variable named centerPoint. Then call MapViewProxy.setViewpointCenter(), which is defined in the ArcGIS Maps SDK for Kotlin Toolkit, and pass centerPoint.

Last, add code to handle the case where the geocodeResults list is empty.

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fun handleGeocodeResults(
    context: Context,
    coroutineScope: CoroutineScope,
    geocodeResults: List<GeocodeResult>,
    graphicsOverlay: GraphicsOverlay,
    mapViewProxy: MapViewProxy
) {

    if (geocodeResults.isNotEmpty()) {
        val geocodeResult = geocodeResults[0]
        // Create a Text graphic to display the address text, and add it to the graphics overlay.
        val textGraphic = createTextGraphic(geocodeResult)
        // Create a red square marker graphic, and add it to the graphics overlay.
        val markerGraphic = createMarkerGraphic(geocodeResult)
        // Clear previous results and add graphics.
        graphicsOverlay.graphics.apply {
            clear()
            add(textGraphic)
            add(markerGraphic)
        }

        coroutineScope.launch {
            val centerPoint = geocodeResult.displayLocation
                ?: return@launch showMessage(context, "The locatorTask.geocode() call failed")

            // Animate the map view to the center point.
            mapViewProxy.setViewpointCenter(centerPoint)
                .onFailure { error ->
                    showMessage(context, "Failed to set Viewpoint center: ${error.message}")
                }

        }

    } else {
        showMessage(context, "No address found for the given query")
    }

}

Add a search bar and pass parameters to MapView

To search an address using the application, add a search bar that will accept an address as text input.

Next, modify the Scaffold so it contains a Column. Inside the Column, you will add a SearchBar, followed by MapView.

Inside the Scaffold block, find the MapView from the Display a map tutorial and replace it with a call of Column. A Column allows you to display the search bar at the top of the screen and the map view directly below.

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@Composable
fun MainScreen() {

    val context = LocalContext.current
    val coroutineScope = rememberCoroutineScope()
    // The focus manager is used to dismiss keyboard after search query submission.
    val focusManager = LocalFocusManager.current
    var queryText by remember { mutableStateOf("") }
    val currentJob = remember { mutableStateOf<Job?>(null) }
    val graphicsOverlay = remember { GraphicsOverlay() }
    val graphicsOverlays = remember { listOf(graphicsOverlay) }
    val mapViewProxy = remember { MapViewProxy() }
    val currentSpatialReference = remember { mutableStateOf<SpatialReference?>(null) }

    val map = remember {
        createMap()
    }

    Scaffold(
        topBar = { TopAppBar(title = { Text(text = stringResource(id = R.string.app_name)) }) }
    ) {

        Column(
            modifier = Modifier
                .fillMaxSize()
                .padding(it)
        ) {

        }

    }

}

Call the SearchBar composable, passing the parameters shown below.

Pass a lambda for the onSearch parameter. When the onSearch callback is invoked, the lambda should clear the focus from the search bar (thus dismissing the device keyboard), then cancel any previous search job, and start a new search job by calling searchAddress(). Note that the onSearch lambda provides a parameter with the value of the current input query, which you must pass to searchAddress().

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@Composable
fun MainScreen() {

    val context = LocalContext.current
    val coroutineScope = rememberCoroutineScope()
    // The focus manager is used to dismiss keyboard after search query submission.
    val focusManager = LocalFocusManager.current
    var queryText by remember { mutableStateOf("") }
    val currentJob = remember { mutableStateOf<Job?>(null) }
    val graphicsOverlay = remember { GraphicsOverlay() }
    val graphicsOverlays = remember { listOf(graphicsOverlay) }
    val mapViewProxy = remember { MapViewProxy() }
    val currentSpatialReference = remember { mutableStateOf<SpatialReference?>(null) }

    val map = remember {
        createMap()
    }

    Scaffold(
        topBar = { TopAppBar(title = { Text(text = stringResource(id = R.string.app_name)) }) }
    ) {

        Column(
            modifier = Modifier
                .fillMaxSize()
                .padding(it)
        ) {

            SearchBar(
                inputField = {
                    SearchBarDefaults.InputField(
                        query = queryText,
                        onQueryChange = { query ->
                            queryText = query
                        },
                        onSearch = { currentQuery ->
                            focusManager.clearFocus()
                            // Cancel any previous search job.
                            currentJob.value?.cancel()
                            // Start a new search job.
                            currentJob.value = coroutineScope.launch {
                                searchAddress(
                                    context,
                                    coroutineScope,
                                    currentQuery,
                                    currentSpatialReference.value,
                                    graphicsOverlay,
                                    mapViewProxy
                                )
                            }
                        },
                        expanded = false,
                        onExpandedChange = { },
                        enabled = true,
                        placeholder = { Text("Search for an address") },
                        leadingIcon = { Icon(Icons.Filled.Search, contentDescription = "Search") })
                },
                expanded = false,
                onExpandedChange = {},
                modifier = Modifier.fillMaxWidth(),
            ) {}

        }

    }

}

Add back the MapView, passing a Modifier and map.

MainScreen.kt

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    Scaffold(
        topBar = { TopAppBar(title = { Text(text = stringResource(id = R.string.app_name)) }) }
    ) {

        Column(
            modifier = Modifier
                .fillMaxSize()
                .padding(it)
        ) {

            SearchBar(
                inputField = {
                    SearchBarDefaults.InputField(
                        query = queryText,
                        onQueryChange = { query ->
                            queryText = query
                        },
                        onSearch = { currentQuery ->
                            focusManager.clearFocus()
                            // Cancel any previous search job.
                            currentJob.value?.cancel()
                            // Start a new search job.
                            currentJob.value = coroutineScope.launch {
                                searchAddress(
                                    context,
                                    coroutineScope,
                                    currentQuery,
                                    currentSpatialReference.value,
                                    graphicsOverlay,
                                    mapViewProxy
                                )
                            }
                        },
                        expanded = false,
                        onExpandedChange = { },
                        enabled = true,
                        placeholder = { Text("Search for an address") },
                        leadingIcon = { Icon(Icons.Filled.Search, contentDescription = "Search") })
                },
                expanded = false,
                onExpandedChange = {},
                modifier = Modifier.fillMaxWidth(),
            ) {}

            MapView(
                modifier = Modifier.fillMaxSize(),
                arcGISMap = map,

            )

        }

    }

Pass these additional parameters to MapView:

graphicsOverlays: Pass the graphicsOverlays variable, defined at the top of the MainScreen block.
mapViewProxy: Pass the mapViewProxy variable (of type MapViewProxy, defined at the top of the MainScreen block.
onSpatialReferenceChanged: Pass a lambda that retrieves a spatial reference and assigns it to the currentSpatialReference variable, defined at the top of the MainScreen block.

MainScreen.kt

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            MapView(
                modifier = Modifier.fillMaxSize(),
                arcGISMap = map,

                graphicsOverlays = graphicsOverlays,
                mapViewProxy = mapViewProxy,
                onSpatialReferenceChanged = { spatialReference ->
                    currentSpatialReference.value = spatialReference
                }

            )

(Optional) The code in this tutorial calls a function to display messages to the user. One possible implementation of showMessage() is the following.

MainScreen.kt

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fun showMessage(context: Context, message: String) {
    Toast.makeText(context, message, Toast.LENGTH_LONG).show()
}

Click Run > Run > app to run the app.

You should see a search box above the map. Search for an address by entering an address and press the magnifying glass on the on the device keyboard. The result of the search should display on the map as a red square.

Tip

Try searching for the following locations:

1000 5th Ave, New York, NY 10028
Great Russell St, Bloomsbury, London WC1B 3DG, United Kingdom
13-9 Uenokoen, Taito City, Tokyo 110-8712, Japan
Av. Paulista, 1578 â Bela Vista, SÃ£o Paulo, Brasil

Alternatively, you can download the tutorial solution, as follows.

Option 2: Download the solution

Click the Download solution link in the right-hand side of this page.
Unzip the file to a location on your machine.
Run Android Studio.
Go to File > Open.... Navigate to the solution folder and click Open.

On Windows: If you are in the Welcome to Android Studio dialog, click Open and navigate to the solution folder. Then click Open.

Since the downloaded solution does not contain authentication credentials, you must add the developer credentials that you created in the Set up authentication section.

Set developer credentials in the solution

To allow your app users to access ArcGIS location services, use the developer credentials that you created in the Set up authentication step to authenticate requests for resources.

In the Android view of Android Studio, open app > kotlin+java > com.example.app > MainActivity. Set the AuthenticationMode to .API_KEY.

MainActivity.kt

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class MainActivity : ComponentActivity() {

    private enum class AuthenticationMode { API_KEY, USER_AUTH }

    private val authenticationMode = AuthenticationMode.API_KEY

Set the apiKey property with your API key access token.

MainActivity.kt

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    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        when (authenticationMode) {
            AuthenticationMode.API_KEY -> {

                ArcGISEnvironment.apiKey = ApiKey.create("YOUR_ACCESS_TOKEN")

            }

Best Practice: The access token is stored directly in the code as a convenience for this tutorial. Do not store credentials directly in source code in a production environment.

In the Android view of Android Studio, open app > kotlin+java > com.example.app > MainActivity. Set the AuthenticationMode to .USER_AUTH.

MainActivity.kt

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class MainActivity : ComponentActivity() {
    private enum class AuthenticationMode { API_KEY, USER_AUTH }

    private val authenticationMode = AuthenticationMode.USER_AUTH

Set your clientID and redirectURL values. You must use the RedirectURL that you supplied for your app in the user authentication part of the Set up authentication step.

MainActivity.kt

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            AuthenticationMode.USER_AUTH -> {
                authenticatorState.oAuthUserConfigurations = listOf(
                    OAuthUserConfiguration(
                        portalUrl = "https://www.arcgis.com",

                        clientId = "YOUR_CLIENT_ID",
                        redirectUrl = "YOUR_REDIRECT_URL"

                    )
                )

Open app > manifests > AndroidManifest.xml.

Set the android:scheme and android:host using the scheme and host from your RedirectURL.

A redirectURL is composed of a scheme and a host component. The format for the redirect url is scheme://host. For example, if the redirect url is myscheme://myhost then the scheme is myscheme and the host is myhost.

AndroidManifest.xml

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                <data
                    android:scheme="your_redirect_url_scheme"
                    android:host="your_redirect_url_host" />

Best Practice: The OAuth credentials are stored directly in the code as a convenience for this tutorial. Do not store credentials directly in source code in a production environment.

Run the app

Click Run > Run > app to run the app.

Tip

Try searching for the following locations:

1000 5th Ave, New York, NY 10028
Great Russell St, Bloomsbury, London WC1B 3DG, United Kingdom
13-9 Uenokoen, Taito City, Tokyo 110-8712, Japan
Av. Paulista, 1578 â Bela Vista, SÃ£o Paulo, Brasil

What's next?

Learn how to use additional API features, ArcGIS location services, and ArcGIS tools in these tutorials:

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

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