Search for an address

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

search for an address

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.

To learn how to use the geocoding service to reverse geocode, visit the Reverse geocode tutorial.

Prerequisites

Before starting this tutorial:

  1. You need an ArcGIS Location Platform or ArcGIS Online account.

  2. Your system meets the system requirements.

Steps

Get an access token

You need an access token to use the location services used in this tutorial.

  1. Go to the Create an API key tutorial to obtain an access token.

  2. Ensure that the following privileges are enabled: Location services > Basemaps > Basemap styles service and Location services > Geocoding.

  3. Copy the access token as it will be used in the next step.

To learn more about other ways to get an access token, go to Types of authentication.

Open the Xcode project

  1. To start the tutorial, complete the Display a map tutorial or download and unzip the solution.

  2. Open the .xcodeproj file in Xcode.

  3. In Xcode, in the Project Navigator, click AppDelegate.swift.

  4. In the editor, set the APIKey property on the AGSArcGISRuntimeEnvironment with your access token.

    AppDelegate.swift
    Expand
    Use dark colors for code blocks
    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
        func application(_ application: UIApplication,
                         didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    
            AGSArcGISRuntimeEnvironment.apiKey = "YOUR_ACCESS_TOKEN"
    
            return true
        }
    
    Expand

Add a search bar to the UI

To search an address using the application, add a UI element to prompt the user for text input. The text input will be used as the geocode search text in a later step.

  1. In Xcode, in the Project Navigator, click ViewController.swift.

  2. In the editor, extend ViewController to conform to the UISearchBarDelegate protocol.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    51 52 53
    Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    extension ViewController: UISearchBarDelegate {
    
    }
  3. Define a private method named setupSearchBar(). In setupSearchBar() create an UISearchBar with these initial values and assign it to navigationItem.titleView.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    42 43 44 45 46 47 48 49 50
    Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private func setupSearchBar() {
            navigationItem.titleView = {
                let searchBar = UISearchBar()
                searchBar.delegate = self
                searchBar.showsCancelButton = true
                searchBar.placeholder = "Search for an address"
                return searchBar
            }()
        }
    
    Expand
  4. In Xcode, in the Project Navigator, click Main.storyboard.

  5. In the editor, select ViewController. In the menu bar, click Editor > Embed In > Navigation Controller.

  6. In Xcode, in the Project Navigator, click ViewController.swift.

  7. In the editor, in the viewDidLoad() method, call setupSearchBar().

    ViewController.swift
    Expand
    Use dark colors for code blocks
    21 22 23 24 25 26 27
    Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        override func viewDidLoad() {
            super.viewDidLoad()
            setupMap()
    
            setupSearchBar()
    
        }
    
    Expand

Add graphics to the map view

A graphics overlay is a container for graphics. Graphics are added as a visual means to display the search result on the map.

  1. Create a private AGSGraphic property named textGraphic. This graphic will be used to display the result's text label.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    57 58 59 60 61 62 63 64 65 66
    Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private let textGraphic: AGSGraphic = {
            let textSymbol = AGSTextSymbol(
                text: "",
                color: .black,
                size: 14,
                horizontalAlignment: .center,
                verticalAlignment: .bottom
            )
            return AGSGraphic(geometry: nil, symbol: textSymbol)
        }()
    
    Expand
  2. Create a private AGSGraphic property named markerGraphic. This graphic will be used to display the result's location.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    68 69 70 71 72 73 74 75
    Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private let markerGraphic: AGSGraphic = {
            let markerSymbol = AGSSimpleMarkerSymbol(
                style: .square,
                color: .red,
                size: 12
            )
            return AGSGraphic(geometry: nil, symbol: markerSymbol)
        }()
    
    Expand
  3. Define a private method named setupGraphics(). In setupGraphics() create an AGSGraphicsOverlay. Append textGraphic and markerGraphic to the graphics overlay then add the graphics overlay to the map view.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    57 58 59 60 61
    Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private func setupGraphics() {
            let graphicsOverlay = AGSGraphicsOverlay()
            graphicsOverlay.graphics.addObjects(from: [textGraphic, markerGraphic])
            mapView.graphicsOverlays.add(graphicsOverlay)
        }
    
    Expand
  4. In the viewDidLoad() method, call setupGraphics().

    ViewController.swift
    Expand
    Use dark colors for code blocks
    21 22 23 24 25 26 27 28 29
    Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        override func viewDidLoad() {
            super.viewDidLoad()
            setupMap()
    
            setupSearchBar()
    
            setupGraphics()
    
        }
    
    Expand

Define app geocode results status

The app will leverage a state-machine design pattern to ensure the contents of the map reflect the state of the search result. This design pattern supports wrangling multiple asynchronous requests to the world geocoding service into a single state variable result, ensuring the reliability of search results.

  1. Define an enum named ResultStatus with two cases. The first case, none, is used when there is no result or an error is returned. The second case, result, is used when a result is found.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    87 88 89 90
    Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        enum ResultStatus {
            case none
            case result(String, AGSPoint)
        }
    
    Expand
  2. Create a ResultStatus property named status. Setting this property will update textGraphic and markerGraphic with values from the result.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105
    Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        enum ResultStatus {
            case none
            case result(String, AGSPoint)
        }
    
        var status: ResultStatus = .none {
            didSet {
                switch status {
                case .none:
                    (textGraphic.symbol as! AGSTextSymbol).text = ""
                    textGraphic.geometry = nil
                    markerGraphic.geometry = nil
                case .result(let title, let location):
                    (textGraphic.symbol as! AGSTextSymbol).text = title
                    textGraphic.geometry = location
                    markerGraphic.geometry = location
                }
            }
        }
    
    Expand

Create a locator task with geocode parameters

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 fine-tune the results, such as setting the maximum number of results or requesting additional attributes in the results.

  1. Create a private AGSLocatorTask property named locator based on the Geocoding service.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    109 110 111
    Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private let locator = AGSLocatorTask(
            url: URL(string: "https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer")!
        )
    
    Expand
  2. Create a private optional AGSCancelable property named currentGeocodeOperation that will maintain a reference to the geocode operation. If the user submits a second query before the current one completes, it can be used to cancel the operation.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    109 110 111 112 113 114
    Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private let locator = AGSLocatorTask(
            url: URL(string: "https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer")!
        )
    
        private var currentGeocodeOperation: AGSCancelable?
    
    
    Expand
  3. Define a private method named geocode(with searchText: String) and cancel the current geocode operation, if one exists.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    109 110 111 112 113 114 115 116 117 118
    Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private let locator = AGSLocatorTask(
            url: URL(string: "https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer")!
        )
    
        private var currentGeocodeOperation: AGSCancelable?
    
        private func geocode(with searchText: String) {
            currentGeocodeOperation?.cancel()
    
        }
    
    Expand
  4. Create new AGSGeocodeParameters, and assign it to the geocodeParameters property. Specify the geocode's attributes as follows:

    • Specify which attributes to return with resultAttributeNames. * is used to return all attributes.
    • Set the maximum number of results to be returned with maxResults. In this tutorial, only return the best match by passing in 1. Results are ordered by score, so just returning the first result will return the highest scoring result.
    • Set the spatial reference with outputSpatialReference. By default the output spatial reference is determined by the geocode service. For optimal performance when displaying the geocode result, ensure the returned coordinates match those of the map view by providing mapView.spatialReference as a parameter.
    ViewController.swift
    Expand
    Use dark colors for code blocks
    115 116 117 118 119 120 121 122 123 124 125 126
    Add line.Add line.Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private func geocode(with searchText: String) {
            currentGeocodeOperation?.cancel()
    
            let parameters: AGSGeocodeParameters = {
                let parameters = AGSGeocodeParameters()
                parameters.resultAttributeNames = ["*"]
                parameters.maxResults = 1
                parameters.outputSpatialReference = mapView.spatialReference
                return parameters
            }()
    
        }
    
    Expand
  5. Perform the geocode operation by calling geocodeWithSearchText:parameters:completion:() and supplying the search query and the geocode parameters. Handle the operation's completion and set the result status accordingly. The result obtained from the geocode operation will be displayed as a graphic in the map view's graphics overlay.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
    Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
        private func geocode(with searchText: String) {
            currentGeocodeOperation?.cancel()
    
            let parameters: AGSGeocodeParameters = {
                let parameters = AGSGeocodeParameters()
                parameters.resultAttributeNames = ["*"]
                parameters.maxResults = 1
                parameters.outputSpatialReference = mapView.spatialReference
                return parameters
            }()
    
            currentGeocodeOperation = self.locator.geocode(withSearchText: searchText, parameters: parameters) { [weak self] (results, error) in
                guard let self = self else { return }
                if let error = error {
                    self.status = .none
                    print(error.localizedDescription)
                    return
                } else if let firstResult = results?.first,
                          let extent = firstResult.extent,
                          let location = firstResult.displayLocation {
                    self.status = .result(firstResult.label, location)
                    self.mapView.setViewpointGeometry(extent)
                } else {
                    self.status = .none
                    print("No results found for \(searchText).")
                }
            }
    
        }
    
    Expand

Hook up the search bar to the geocode operation

  1. Find the ViewController extension of UISearchBarDelegate and introduce the searchBarSearchButtonClicked(_:) search bar delegate method. Use this method to know when the user presses Search and to perform the geocode operation.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    147 148 149 150 151 152 153 154 155 156 157 158
    Add line.Add line.Add line.Add line.Add line.Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    extension ViewController: UISearchBarDelegate {
    
        func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
            searchBar.resignFirstResponder()
            guard let searchText = searchBar.text, !searchText.isEmpty else {
                print("Nothing to search!")
                return
            }
            geocode(with: searchText)
        }
    
    }
  2. Introduce the searchBarCancelButtonClicked(_:) search bar delegate method. Use this method to know when the user presses Cancel and to dismiss the keyboard.

    ViewController.swift
    Expand
    Use dark colors for code blocks
    147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162
    Add line.Add line.Add line.
    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
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    extension ViewController: UISearchBarDelegate {
    
        func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
            searchBar.resignFirstResponder()
            guard let searchText = searchBar.text, !searchText.isEmpty else {
                print("Nothing to search!")
                return
            }
            geocode(with: searchText)
        }
    
        func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
            searchBar.resignFirstResponder()
        }
    
    }
  3. Press Command + R to run the app.

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

What's next?

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

Your browser is no longer supported. Please upgrade your browser for the best experience. See our browser deprecation post for more details.