request permissions needed for audio/video capture

@@ -40,6 +40,7 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'androidx.core:core-ktx:1.3.2'
     implementation "androidx.activity:activity-ktx:1.2.1"
+    implementation 'androidx.fragment:fragment-ktx:1.3.1'
     implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0'
     implementation "androidx.viewpager2:viewpager2:1.0.0"
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:${versions.androidx_lifecycle}"

@@ -4,6 +4,8 @@
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.CAMERA" />
 
     <application
         android:name=".SampleApplication"

 package io.livekit.android.sample
 
+import android.Manifest
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.os.Bundle
 import android.text.SpannableStringBuilder
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.content.ContextCompat
 import io.livekit.android.sample.databinding.MainActivityBinding
 
+
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -30,6 +36,38 @@ class MainActivity : AppCompatActivity() {
         }
 
         setContentView(binding.root)
+
+        requestPermissions()
+
+    }
+
+    private fun requestPermissions() {
+        val requestPermissionLauncher =
+            registerForActivityResult(
+                ActivityResultContracts.RequestMultiplePermissions()
+            ) { grants ->
+                for (grant in grants.entries) {
+                    if (!grant.value) {
+                        Toast.makeText(
+                            this,
+                            "Missing permission: ${grant.key}",
+                            Toast.LENGTH_SHORT
+                        )
+                            .show()
+                    }
+                }
+            }
+        val neededPermissions = listOf(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA)
+            .filter {
+                ContextCompat.checkSelfPermission(
+                    this,
+                    it
+                ) == PackageManager.PERMISSION_DENIED
+            }
+            .toTypedArray()
+        if (neededPermissions.isNotEmpty()) {
+            requestPermissionLauncher.launch(neededPermissions)
+        }
     }
 
     companion object {