How to request Location Permission at runtime on Kotlin?

Kotlin Apps/ApplicationsMobile Development

This example demonstrates how to request Location Permission at runtime on 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.

Example

<?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"
   tools:context=".MainActivity">
   <TextView
      android:id="@+id/textView"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerHorizontal="true"
      android:layout_marginTop="50dp"
      android:padding="8dp"
      android:text="Tutorials Point"
      android:textColor="@android:color/holo_green_dark"
      android:textSize="48sp"
      android:textStyle="bold" />
   <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerInParent="true"
      android:padding="4dp"
      android:textColor="@android:color/background_dark"
      android:text="Request Location permission at Run time!"
      android:textAlignment="center"
      android:textSize="36sp"
      android:textStyle="bold" />
</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.kt

Example

import android.content.pm.PackageManager
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Toast
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
class MainActivity : AppCompatActivity() {
   override fun onCreate(savedInstanceState: Bundle?) {
      super.onCreate(savedInstanceState)
      setContentView(R.layout.activity_main)
      title = "KotlinApp"
      if (ContextCompat.checkSelfPermission(this@MainActivity,
      Manifest.permission.ACCESS_FINE_LOCATION) !==
      PackageManager.PERMISSION_GRANTED) {
         if (ActivityCompat.shouldShowRequestPermissionRationale(this@MainActivity,
         Manifest.permission.ACCESS_FINE_LOCATION)) {
            ActivityCompat.requestPermissions(this@MainActivity,
            arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), 1)
         } else {
            ActivityCompat.requestPermissions(this@MainActivity,
            arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), 1)
         }
      }
   }
   override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<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 − Add the following code to androidManifest.xml

Example

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.myapplication">
<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

raja
Published on 23-May-2020 17:06:43
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