Audio and fullscreen video

app/src/main/AndroidManifest.xml

@@ -25,6 +25,7 @@
         <activity
             android:name=".posts.MediaViewerActivity"
             android:exported="false"
+            android:configChanges="keyboardHidden|orientation|screenSize"
             android:theme="@style/AppTheme.NoActionBar" />
         <activity android:name=".postCreation.camera.CameraActivity" />
         <activity

app/src/main/java/org/pixeldroid/app/posts/MediaViewerActivity.kt

@@ -2,8 +2,14 @@ package org.pixeldroid.app.posts
 
 import android.content.Context
 import android.content.Intent
+import android.content.pm.ActivityInfo
+import android.media.AudioManager.STREAM_MUSIC
 import android.os.Bundle
 import androidx.core.net.toUri
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.WindowInsetsControllerCompat
+import androidx.media.AudioAttributesCompat
 import androidx.media2.common.MediaMetadata
 import androidx.media2.common.UriMediaItem
 import androidx.media2.player.MediaPlayer
@@ -12,6 +18,7 @@ import org.pixeldroid.app.utils.BaseActivity
 
 class MediaViewerActivity : BaseActivity() {
 
+    private lateinit var mediaPlayer: MediaPlayer
     private lateinit var binding: ActivityMediaviewerBinding
 
     companion object {
@@ -39,8 +46,42 @@ class MediaViewerActivity : BaseActivity() {
             .putString(MediaMetadata.METADATA_KEY_TITLE, description ?: "")
             .build()
 
-        val mediaPlayer = MediaPlayer(this)
+        mediaPlayer = MediaPlayer(this)
         mediaPlayer.setMediaItem(mediaItem)
+
+        binding.videoView.mediaControlView?.setOnFullScreenListener{ view, fullscreen ->
+            val windowInsetsController = ViewCompat.getWindowInsetsController(window.decorView)
+            if (!fullscreen) {
+                // Configure the behavior of the hidden system bars
+                windowInsetsController?.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+                // Hide both the status bar and the navigation bar
+                windowInsetsController?.show(WindowInsetsCompat.Type.systemBars())
+                supportActionBar?.show()
+                requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
+            } else {
+                // Configure the behavior of the hidden system bars
+                windowInsetsController?.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+                // Hide both the status bar and the navigation bar
+                windowInsetsController?.hide(WindowInsetsCompat.Type.systemBars())
+
+                requestedOrientation =
+                    if (mediaPlayer.videoSize.height < mediaPlayer.videoSize.width) {
+                        ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE
+                    } else {
+                        ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+                    }
+                supportActionBar?.hide()
+            }
+        }
+
+        // Configure audio
+        mediaPlayer.setAudioAttributes(AudioAttributesCompat.Builder()
+                    .setLegacyStreamType(STREAM_MUSIC)
+                    .setUsage(AudioAttributesCompat.USAGE_MEDIA)
+                    .setContentType(AudioAttributesCompat.CONTENT_TYPE_MOVIE)
+                    .build()
+        )
+
         mediaPlayer.prepare()
 
         binding.videoView.setPlayer(mediaPlayer)
@@ -48,4 +89,14 @@ class MediaViewerActivity : BaseActivity() {
         // Start actually playing the video
         mediaPlayer.play()
     }
+
+    override fun onPause() {
+        super.onPause()
+        mediaPlayer.pause()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        mediaPlayer.close()
+    }
 }