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Google Map Search Location


In the previous tutorial, we build the application that locate the Map Fixed Location and Map Current Location.
In this tutorial, we will implement search location functionality in Google Map. The searching of Google location is done through Geocoder class. Geocoder class facilitates the geocoding and reverse geocoding.
Geocoding is a process in which street address is converted into a coordinate (latitude, longitude). Reverse geocoding is a process in which a coordinate (latitude, longitude) is converted into the street address.


Methods of Geocoder class


  • List
    getFromLocation(double latitude, double longitude, int maxResults): This method returns an array of Address which specifies the surrounding latitude and longitude.

  • List
    getFromLocationName(String location, int results, double leftLatitude, double leftLongitude, double rightLatitude, double rightLongitude): This method returns an array of Address which describes the given location such as place, an address, etc.

  • List
    getFromLocationName(String location, int results): This method returns an array of Address which describes the given location such as place, an address, etc.

  • static boolean isPresent(): This method returns true if the methods getFromLocation() and getFromLocationName() are implemented.

activity_maps.xml


Add the following code in an activity_maps.xml layout file. The EditText is used to input search location and Button is used for click event to search the place.


< fragment xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:map="http://schemas.android.com/apk/res-auto"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:id="@+id/map"  
    android:name="com.google.android.gms.maps.SupportMapFragment"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    tools:context="example.javatpoint.com.kotlingooglesearchlocation.MapsActivity" >  
    < LinearLayout  
        android:layout_width="match_parent"  
        android:layout_height="wrap_content"  
        android:orientation="horizontal">  
  
        < EditText  
            android:layout_width="248dp"  
            android:layout_height="wrap_content"  
            android:id="@+id/editText"  
            android:layout_weight="0.5"  
            android:inputType="textPersonName"  
            android:hint="Search Location" />  
  
        < Button  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_weight="0.5"  
            android:onClick="searchLocation"  
            android:text="Search" />  
  
    < /LinearLayout>  
< /fragment>  
< fragment xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:map="http://schemas.android.com/apk/res-auto"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:id="@+id/map"  
    android:name="com.google.android.gms.maps.SupportMapFragment"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    tools:context="example.javatpoint.com.kotlingooglesearchlocation.MapsActivity" >  
    < LinearLayout  
        android:layout_width="match_parent"  
        android:layout_height="wrap_content"  
        android:orientation="horizontal">  
  
        < EditText  
            android:layout_width="248dp"  
            android:layout_height="wrap_content"  
            android:id="@+id/editText"  
            android:layout_weight="0.5"  
            android:inputType="textPersonName"  
            android:hint="Search Location" />  
  
        < Button  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_weight="0.5"  
            android:onClick="searchLocation"  
            android:text="Search" />  
  
    < /LinearLayout>  
< /fragment>

build.gradle


Add the Google Map Service and Google Location Service dependencies in build.gradle file.


dependencies {  
    implementation fileTree(dir: 'libs', include: ['*.jar'])  
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"  
    implementation 'com.android.support:appcompat-v7:26.1.0'  
    implementation 'com.google.android.gms:play-services-maps:11.8.0'  
    compile 'com.google.android.gms:play-services-location:11.8.0'  
    testImplementation 'junit:junit:4.12'  
    testImplementation 'junit:junit:4.12'  
}  
dependencies {  
    implementation fileTree(dir: 'libs', include: ['*.jar'])  
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"  
    implementation 'com.android.support:appcompat-v7:26.1.0'  
    implementation 'com.google.android.gms:play-services-maps:11.8.0'  
    compile 'com.google.android.gms:play-services-location:11.8.0'  
    testImplementation 'junit:junit:4.12'  
    testImplementation 'junit:junit:4.12'  
}

strings.xml


< resources>  
    < string name="app_name">Kotlin Google Search Location< /string>  
    < string name="title_activity_maps">Google Search Location< /string>  
< /resources>  
< resources>  
    < string name="app_name">Kotlin Google Search Location< /string>  
    < string name="title_activity_maps">Google Search Location< /string>  
< /resources>

google_map_api.xml


Place the Google Map API key in res/values/google_map_api.xml file.


< resources>  
    < !--  
    https://console.developers.google.com/flows/enableapi?apiid=maps_android_backend&keyType=CLIENT_SIDE_ANDROID&r=20:0B:71:3B:B2:46:75:A1:87:78:2E:4C:49:3F:E3:B6:FD:2D:76:D3%3Bexample.javatpoint.com.kotlingooglesearchlocation  
  
    Alternatively, follow the directions here:  
    https://developers.google.com/maps/documentation/android/start#get-key  
  
    Once you have your key (it starts with "AIza"), replace the "google_maps_key"  
    string in this file.  
    -->  
    < string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">AIzaSyCKvLn2KTPKD_-REPLACE-WITH-YOUR-API< /string>  
< /resources>  
< resources>  
    < !--  
    https://console.developers.google.com/flows/enableapi?apiid=maps_android_backend&keyType=CLIENT_SIDE_ANDROID&r=20:0B:71:3B:B2:46:75:A1:87:78:2E:4C:49:3F:E3:B6:FD:2D:76:D3%3Bexample.javatpoint.com.kotlingooglesearchlocation  
  
    Alternatively, follow the directions here:  
    https://developers.google.com/maps/documentation/android/start#get-key  
  
    Once you have your key (it starts with "AIza"), replace the "google_maps_key"  
    string in this file.  
    -->  
    < string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">AIzaSyCKvLn2KTPKD_-REPLACE-WITH-YOUR-API< /string>  
< /resources>

MapsActivity.kt


Add the following code in MapsActivity.kt class file.


package example.javatpoint.com.kotlingooglesearchlocation  
  
import android.os.Bundle  
import com.google.android.gms.maps.CameraUpdateFactory  
import com.google.android.gms.maps.GoogleMap  
import com.google.android.gms.maps.OnMapReadyCallback  
import com.google.android.gms.maps.SupportMapFragment  
import com.google.android.gms.maps.model.LatLng  
import com.google.android.gms.maps.model.MarkerOptions  
import android.location.Address  
import android.location.Geocoder  
import android.os.Build  
import android.support.v4.app.FragmentActivity  
import com.google.android.gms.common.api.GoogleApiClient  
import com.google.android.gms.maps.model.BitmapDescriptorFactory  
import com.google.android.gms.maps.model.Marker  
import com.google.android.gms.location.LocationServices  
import android.location.Location  
import android.Manifest  
import android.content.pm.PackageManager  
import android.support.v4.content.ContextCompat  
import android.view.View  
import android.widget.EditText  
import android.widget.Toast  
import com.google.android.gms.common.ConnectionResult  
import com.google.android.gms.location.LocationListener  
import com.google.android.gms.location.LocationRequest  
import java.io.IOException  
  
  
class MapsActivity() : FragmentActivity(), OnMapReadyCallback, LocationListener,  
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {  
  
    private var mMap: GoogleMap? = null  
    internal lateinit var mLastLocation: Location  
    internal var mCurrLocationMarker: Marker? = null  
    internal var mGoogleApiClient: GoogleApiClient? = null  
    internal lateinit var mLocationRequest: LocationRequest  
  
    override fun onCreate(savedInstanceState: Bundle?) {  
        super.onCreate(savedInstanceState)  
        setContentView(R.layout.activity_maps)  
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.  
        val mapFragment = supportFragmentManager  
                .findFragmentById(R.id.map) as SupportMapFragment  
        mapFragment.getMapAsync(this)  
    }  
  
    override fun onMapReady(googleMap: GoogleMap) {  
        mMap = googleMap  
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {  
            if (ContextCompat.checkSelfPermission(this,  
                            Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {  
                buildGoogleApiClient()  
                mMap!!.isMyLocationEnabled = true  
            }  
        } else {  
            buildGoogleApiClient()  
            mMap!!.isMyLocationEnabled = true  
        }  
  
    }  
  
    @Synchronized  
    protected fun buildGoogleApiClient() {  
        mGoogleApiClient = GoogleApiClient.Builder(this)  
                .addConnectionCallbacks(this)  
                .addOnConnectionFailedListener(this)  
                .addApi(LocationServices.API).build()  
        mGoogleApiClient!!.connect()  
    }  
  
    override fun onConnected(bundle: Bundle?) {  
  
        mLocationRequest = LocationRequest()  
        mLocationRequest.interval = 1000  
        mLocationRequest.fastestInterval = 1000  
        mLocationRequest.priority = LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY  
        if (ContextCompat.checkSelfPermission(this,  
                        Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {  
            LocationServices.getFusedLocationProviderClient(this)  
        }  
    }  
  
    override fun onConnectionSuspended(i: Int) {  
  
    }  
  
    override fun onLocationChanged(location: Location) {  
  
        mLastLocation = location  
        if (mCurrLocationMarker != null) {  
            mCurrLocationMarker!!.remove()  
        }  
        //Place current location marker  
        val latLng = LatLng(location.latitude, location.longitude)  
        val markerOptions = MarkerOptions()  
        markerOptions.position(latLng)  
        markerOptions.title("Current Position")  
        markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN))  
        mCurrLocationMarker = mMap!!.addMarker(markerOptions)  
  
        //move map camera  
        mMap!!.moveCamera(CameraUpdateFactory.newLatLng(latLng))  
        mMap!!.animateCamera(CameraUpdateFactory.zoomTo(11f))  
  
        //stop location updates  
        if (mGoogleApiClient != null) {  
            LocationServices.getFusedLocationProviderClient(this)  
        }  
  
    }  
  
    override fun onConnectionFailed(connectionResult: ConnectionResult) {  
  
    }  
  
    fun searchLocation(view: View) {  
        val locationSearch:EditText = findViewById< EditText>(R.id.editText)  
        lateinit var location: String  
        location = locationSearch.text.toString()  
        var addressList: List< Address>? = null  
  
        if (location == null || location == "") {  
            Toast.makeText(applicationContext,"provide location",Toast.LENGTH_SHORT).show()  
        }  
        else{  
            val geoCoder = Geocoder(this)  
            try {  
                addressList = geoCoder.getFromLocationName(location, 1)  
  
            } catch (e: IOException) {  
                e.printStackTrace()  
            }  
            val address = addressList!![0]  
            val latLng = LatLng(address.latitude, address.longitude)  
            mMap!!.addMarker(MarkerOptions().position(latLng).title(location))  
            mMap!!.animateCamera(CameraUpdateFactory.newLatLng(latLng))  
            Toast.makeText(applicationContext, address.latitude.toString() + " " + address.longitude, Toast.LENGTH_LONG).show()  
        }  
    }  
}  
package example.javatpoint.com.kotlingooglesearchlocation  
  
import android.os.Bundle  
import com.google.android.gms.maps.CameraUpdateFactory  
import com.google.android.gms.maps.GoogleMap  
import com.google.android.gms.maps.OnMapReadyCallback  
import com.google.android.gms.maps.SupportMapFragment  
import com.google.android.gms.maps.model.LatLng  
import com.google.android.gms.maps.model.MarkerOptions  
import android.location.Address  
import android.location.Geocoder  
import android.os.Build  
import android.support.v4.app.FragmentActivity  
import com.google.android.gms.common.api.GoogleApiClient  
import com.google.android.gms.maps.model.BitmapDescriptorFactory  
import com.google.android.gms.maps.model.Marker  
import com.google.android.gms.location.LocationServices  
import android.location.Location  
import android.Manifest  
import android.content.pm.PackageManager  
import android.support.v4.content.ContextCompat  
import android.view.View  
import android.widget.EditText  
import android.widget.Toast  
import com.google.android.gms.common.ConnectionResult  
import com.google.android.gms.location.LocationListener  
import com.google.android.gms.location.LocationRequest  
import java.io.IOException  
  
  
class MapsActivity() : FragmentActivity(), OnMapReadyCallback, LocationListener,  
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {  
  
    private var mMap: GoogleMap? = null  
    internal lateinit var mLastLocation: Location  
    internal var mCurrLocationMarker: Marker? = null  
    internal var mGoogleApiClient: GoogleApiClient? = null  
    internal lateinit var mLocationRequest: LocationRequest  
  
    override fun onCreate(savedInstanceState: Bundle?) {  
        super.onCreate(savedInstanceState)  
        setContentView(R.layout.activity_maps)  
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.  
        val mapFragment = supportFragmentManager  
                .findFragmentById(R.id.map) as SupportMapFragment  
        mapFragment.getMapAsync(this)  
    }  
  
    override fun onMapReady(googleMap: GoogleMap) {  
        mMap = googleMap  
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {  
            if (ContextCompat.checkSelfPermission(this,  
                            Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {  
                buildGoogleApiClient()  
                mMap!!.isMyLocationEnabled = true  
            }  
        } else {  
            buildGoogleApiClient()  
            mMap!!.isMyLocationEnabled = true  
        }  
  
    }  
  
    @Synchronized  
    protected fun buildGoogleApiClient() {  
        mGoogleApiClient = GoogleApiClient.Builder(this)  
                .addConnectionCallbacks(this)  
                .addOnConnectionFailedListener(this)  
                .addApi(LocationServices.API).build()  
        mGoogleApiClient!!.connect()  
    }  
  
    override fun onConnected(bundle: Bundle?) {  
  
        mLocationRequest = LocationRequest()  
        mLocationRequest.interval = 1000  
        mLocationRequest.fastestInterval = 1000  
        mLocationRequest.priority = LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY  
        if (ContextCompat.checkSelfPermission(this,  
                        Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {  
            LocationServices.getFusedLocationProviderClient(this)  
        }  
    }  
  
    override fun onConnectionSuspended(i: Int) {  
  
    }  
  
    override fun onLocationChanged(location: Location) {  
  
        mLastLocation = location  
        if (mCurrLocationMarker != null) {  
            mCurrLocationMarker!!.remove()  
        }  
        //Place current location marker  
        val latLng = LatLng(location.latitude, location.longitude)  
        val markerOptions = MarkerOptions()  
        markerOptions.position(latLng)  
        markerOptions.title("Current Position")  
        markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN))  
        mCurrLocationMarker = mMap!!.addMarker(markerOptions)  
  
        //move map camera  
        mMap!!.moveCamera(CameraUpdateFactory.newLatLng(latLng))  
        mMap!!.animateCamera(CameraUpdateFactory.zoomTo(11f))  
  
        //stop location updates  
        if (mGoogleApiClient != null) {  
            LocationServices.getFusedLocationProviderClient(this)  
        }  
  
    }  
  
    override fun onConnectionFailed(connectionResult: ConnectionResult) {  
  
    }  
  
    fun searchLocation(view: View) {  
        val locationSearch:EditText = findViewById< EditText>(R.id.editText)  
        lateinit var location: String  
        location = locationSearch.text.toString()  
        var addressList: List< Address>? = null  
  
        if (location == null || location == "") {  
            Toast.makeText(applicationContext,"provide location",Toast.LENGTH_SHORT).show()  
        }  
        else{  
            val geoCoder = Geocoder(this)  
            try {  
                addressList = geoCoder.getFromLocationName(location, 1)  
  
            } catch (e: IOException) {  
                e.printStackTrace()  
            }  
            val address = addressList!![0]  
            val latLng = LatLng(address.latitude, address.longitude)  
            mMap!!.addMarker(MarkerOptions().position(latLng).title(location))  
            mMap!!.animateCamera(CameraUpdateFactory.newLatLng(latLng))  
            Toast.makeText(applicationContext, address.latitude.toString() + " " + address.longitude, Toast.LENGTH_LONG).show()  
        }  
    }  
}

AndroidManifest.xml


< ?xml version="1.0" encoding="utf-8"?>  
< manifest xmlns:android="http://schemas.android.com/apk/res/android"  
    package="example.javatpoint.com.kotlingooglesearchlocation">  
  
    < uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />  
    < uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />  
    < uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />  
    < uses-permission android:name="android.permission.INTERNET" />  
    < application  
        android:allowBackup="true"  
        android:icon="@mipmap/ic_launcher"  
        android:label="@string/app_name"  
        android:roundIcon="@mipmap/ic_launcher_round"  
        android:supportsRtl="true"  
        android:theme="@style/AppTheme">  
  
        < meta-data  
            android:name="com.google.android.geo.API_KEY"  
            android:value="@string/google_maps_key" />  
  
        < activity  
            android:name=".MapsActivity"  
            android:label="@string/title_activity_maps">  
            < intent-filter>  
                < action android:name="android.intent.action.MAIN" />  
  
                < category android:name="android.intent.category.LAUNCHER" />  
            < /intent-filter>  
        < /activity>  
    < /application>  
  
< /manifest>  
< ?xml version="1.0" encoding="utf-8"?>  
< manifest xmlns:android="http://schemas.android.com/apk/res/android"  
    package="example.javatpoint.com.kotlingooglesearchlocation">  
  
    < uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />  
    < uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />  
    < uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />  
    < uses-permission android:name="android.permission.INTERNET" />  
    < application  
        android:allowBackup="true"  
        android:icon="@mipmap/ic_launcher"  
        android:label="@string/app_name"  
        android:roundIcon="@mipmap/ic_launcher_round"  
        android:supportsRtl="true"  
        android:theme="@style/AppTheme">  
  
        < meta-data  
            android:name="com.google.android.geo.API_KEY"  
            android:value="@string/google_maps_key" />  
  
        < activity  
            android:name=".MapsActivity"  
            android:label="@string/title_activity_maps">  
            < intent-filter>  
                < action android:name="android.intent.action.MAIN" />  
  
                < category android:name="android.intent.category.LAUNCHER" />  
            < /intent-filter>  
        < /activity>  
    < /application>  
  
< /manifest>

Output:


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Hi I am Pluto.