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How to get a complete address from latitude and longitude on Android Kotlin?
This example demonstrates how to get a complete address from latitude and longitude on Android Kotlin?
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="16sp" tools:context=".MainActivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_marginTop="50dp" android:text="Tutorials Point" android:textAlignment="center" android:textColor="@android:color/holo_green_dark" android:textSize="32sp" android:textStyle="bold" /> <Button android:id="@+id/btnShowAddress" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="Show Address" /> <TextView android:id="@+id/tvAddress" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/btnShowAddress" android:layout_centerInParent="true" android:textColor="@android:color/background_dark" android:textSize="12sp" android:textStyle="bold" /> </RelativeLayout>
Step 3 − Add the following code to src/MainActivity.kt
import android.content.Intent import android.content.pm.PackageManager import android.location.Location import android.location.LocationManager import android.os.Bundle import android.os.Handler import android.os.Message import android.provider.Settings import android.widget.Button import android.widget.TextView import android.widget.Toast import androidx.appcompat.app.AlertDialog import androidx.appcompat.app.AppCompatActivity import androidx.core.app.ActivityCompat import androidx.core.content.ContextCompat class MainActivity : AppCompatActivity() { lateinit var btnShowAddress: Button lateinit var tvAddress: TextView lateinit var location: Location lateinit var appLocationService: AppLocationService override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" tvAddress = findViewById(R.id.tvAddress) appLocationService = AppLocationService(this) btnShowAddress = findViewById(R.id.btnShowAddress) if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)) { ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), 1); } else { ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), 1); } } btnShowAddress.setOnClickListener { location = appLocationService.getLocation(LocationManager.GPS_PROVIDER)!! val latitude = 13.1000727 val longitude = 80.2126274 val locationAddress = LocationAddress() locationAddress.getAddressFromLocation( latitude, longitude, applicationContext, GeoCodeHandler() ) showSettingsAlert() } } private fun showSettingsAlert() { val alertDialog = AlertDialog.Builder(this) alertDialog.setTitle("SETTINGS") alertDialog.setMessage("Enable Location Provider! Go to settings menu?") alertDialog.setPositiveButton("Settings") { _, _ -> val intent = Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS) this@MainActivity.startActivity(intent) } alertDialog.setNegativeButton("Cancel") { dialog, _ -> dialog.cancel() } alertDialog.show() } internal inner class GeoCodeHandler : Handler() { override fun handleMessage(message: Message) { val locationAddress: String locationAddress = when (message.what) { 1 -> { val bundle = message.data bundle.getString("address") } else -> null.toString() } tvAddress.text = locationAddress } } override fun onRequestPermissionsResult( requestCode: Int, permissions: Array<out String>, grantResults: IntArray ) { when (requestCode) { 1 -> { if (grantResults.isNotEmpty() && grantResults[0] === PackageManager.PERMISSION_GRANTED) { if ((ContextCompat.checkSelfPermission( this@MainActivity, Manifest.permission.ACCESS_FINE_LOCATION ) === PackageManager.PERMISSION_GRANTED) ) { Toast.makeText(this, "Permission Granted", Toast.LENGTH_SHORT).show() } } else { Toast.makeText(this, "Permission Denied", Toast.LENGTH_SHORT).show() } return } } } }
Step 4 − Create a kotlin class and add the following code in AppLocationService.kt
Example
import android.annotation.SuppressLint import android.app.Service import android.content.Context import android.content.Intent import android.location.Location import android.location.LocationListener import android.location.LocationManager import android.os.Bundle import android.os.IBinder open class AppLocationService(context: Context) : Service(), LocationListener { private var locationManager: LocationManager? = context.getSystemService(Context.LOCATION_SERVICE) as LocationManager private lateinit var location: Location @SuppressLint("MissingPermission") fun getLocation(provider: String?): Location? { if (locationManager!!.isProviderEnabled(provider)) { locationManager!!.requestLocationUpdates( provider, MIN_TIME_FOR_UPDATE, MIN_DISTANCE_FOR_UPDATE.toFloat(), this ) if (locationManager != null) { location = locationManager!!.getLastKnownLocation(provider) return location } } return null } override fun onLocationChanged(location: Location) {} override fun onProviderDisabled(provider: String) {} override fun onProviderEnabled(provider: String) {} override fun onStatusChanged( provider: String, status: Int, extras: Bundle ) { } override fun onBind(arg0: Intent): IBinder? { return null } companion object { private const val MIN_DISTANCE_FOR_UPDATE: Long = 10 private const val MIN_TIME_FOR_UPDATE = 1000 * 60 * 2.toLong() } }
Step 5 − Create a kotlin class and add the following code in LocationAddress.kt
Example
import android.content.Context import android.location.Geocoder import android.os.Bundle import android.os.Handler import android.os.Message import android.util.Log import java.io.IOException import java.util.* class LocationAddress { private val tag = "LocationAddress" fun getAddressFromLocation( latitude: Double, longitude: Double, context: Context, handler: Handler ) { val thread = object : Thread() { override fun run() { val geoCoder = Geocoder( context, Locale.getDefault() ) var result: String = null.toString() try { val addressList = geoCoder.getFromLocation( latitude, longitude, 1 ) if ((addressList != null && addressList.size > 0)) { val address = addressList.get(0) val sb = StringBuilder() for (i in 0 until address.maxAddressLineIndex) { sb.append(address.getAddressLine(i)).append("
") } sb.append(address.locality).append("
") sb.append(address.postalCode).append("
") sb.append(address.countryName) result = sb.toString() } } catch (e: IOException) { Log.e(tag, "Unable connect to GeoCoder", e) } finally { val message = Message.obtain() message.target = handler message.what = 1 val bundle = Bundle() result = ("Latitude: " + latitude + " Longitude: " + longitude + "
Address:
" + result) bundle.putString("address", result) message.data = bundle message.sendToTarget() } } } thread.start() } }
Step 6 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.q11"> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <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"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click the Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen
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