Get current location with latitude and longtitude using kotlin

Summary

This tutorial explains how to get the current location with latitude and longitude using Kotlin.

Abstract

The tutorial titled "Get current location with latitude and longtitude using kotlin" provides a step-by-step guide to obtaining the current location of a device using Kotlin. The tutorial begins by explaining the need to add necessary permissions in the manifest file, followed by creating an XML layout for the user interface. The Kotlin code is then provided, which includes a function to get the location and display the latitude and longitude in a text view when a button is clicked. The tutorial also covers requesting location permissions from the user if not already granted. The final output result is shown with a screenshot displaying the latitude and longitude.

Opinions

The tutorial assumes that the reader has a basic understanding of Kotlin and Android development.
The tutorial emphasizes the importance of requesting location permissions from the user.
The tutorial uses a simple and clear layout for the user interface.
The tutorial provides a complete code example for obtaining the current location.
The tutorial could benefit from additional explanations of the Kotlin code and Android concepts used.
The tutorial does not cover error handling or edge cases that may occur when obtaining the current location.
The tutorial could benefit from providing more context or use cases for obtaining the current location using Kotlin.

Get current location with latitude and longtitude using kotlin

This tutorial about get current location with latitude and longtitude using kotlin.

2. Add permission in manifest

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

3. xml layout

<?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="4dp"
    tools:context=".MainActivity">
    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="70dp"
        android:background="#008080"
        android:padding="5dp"
        android:text="Hello World"
        android:textColor="#fff"
        android:textSize="24sp"
        android:textStyle="bold" />
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Get GPS Location"
        android:textColor="@android:color/holo_red_dark"
        android:textSize="24sp"
        android:textStyle="bold" />
    <Button
        android:id="@+id/getLocation"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/text"
        android:layout_centerInParent="true"
        android:layout_marginTop="40dp"
        android:text="Get location" />
</RelativeLayout>

4. kotlin code when click on button display latitude and longtitude in textview

package com.example.myapplication

import android.Manifest
import android.content.Context
import android.content.pm.PackageManager
import android.location.Location
import android.location.LocationListener
import android.location.LocationManager
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.TextView
import android.widget.Toast
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat

class MainActivity : AppCompatActivity(), LocationListener {
    private lateinit var locationManager: LocationManager
    private lateinit var tvGpsLocation: TextView
    private val locationPermissionCode = 2
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        title = "Location App"
        val button: Button = findViewById(R.id.getLocation)
        button.setOnClickListener {
            getLocation()
        }
    }
    private fun getLocation() {
        locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
        if ((ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {
            ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), locationPermissionCode)
        }
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 5f, this)
    }
    override fun onLocationChanged(location: Location) {
        tvGpsLocation = findViewById(R.id.textView)
        tvGpsLocation.text = "Latitude: " + location.latitude + " , Longitude: " + location.longitude
    }
    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        if (requestCode == locationPermissionCode) {
            if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                Toast.makeText(this, "Permission Granted", Toast.LENGTH_SHORT).show()
            }
            else {
                Toast.makeText(this, "Permission Denied", Toast.LENGTH_SHORT).show()
            }
        }
    }
}

5. output result

THE END