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Modernize player screen lock experience: migrate to Media3, refactor UI & lifecycle #1

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Merged
halilozel1903 merged 1 commit into from
May 30, 2026
Merged

Modernize player screen lock experience: migrate to Media3, refactor UI & lifecycle #1

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12 changes: 7 additions & 5 deletions app/build.gradle
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Original file line number Diff line number Diff line change
Expand Up @@ -4,12 +4,12 @@ plugins {
}

android {
compileSdk 34
compileSdk 35

defaultConfig {
applicationId "com.halil.ozel.exoplayerscreenlock"
minSdk 24
targetSdk 34
targetSdk 35
versionCode 1
versionName "1.0"

Expand Down Expand Up @@ -41,6 +41,8 @@ dependencies {
implementation 'com.google.android.material:material:1.10.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'

// ExoPlayer
implementation 'com.google.android.exoplayer:exoplayer:2.19.1'
}
// Media3 (modern ExoPlayer)
implementation 'androidx.media3:media3-exoplayer:1.8.1'
implementation 'androidx.media3:media3-exoplayer-hls:1.8.1'
implementation 'androidx.media3:media3-ui:1.8.1'
}
8 changes: 3 additions & 5 deletions app/src/main/AndroidManifest.xml
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@@ -1,20 +1,18 @@
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">

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

<application
android:usesCleartextTraffic="true"
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/Theme.ExoPlayerScreenLock">
<activity
android:theme="@style/Theme.AppCompat.Light.NoActionBar.FullScreen"
android:configChanges="orientation|screenSize|screenLayout"
android:name=".MainActivity"
android:configChanges="orientation|screenSize|screenLayout"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
Expand All @@ -24,4 +22,4 @@
</activity>
</application>

</manifest>
</manifest>
288 changes: 182 additions & 106 deletions app/src/main/java/com/halil/ozel/exoplayerscreenlock/MainActivity.kt
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Expand Up @@ -7,152 +7,228 @@ import android.os.Bundle
import android.view.View
import android.widget.ImageView
import android.widget.LinearLayout
import androidx.activity.OnBackPressedCallback
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat
import com.google.android.exoplayer2.ExoPlayer
import com.google.android.exoplayer2.MediaItem
import com.google.android.exoplayer2.source.hls.HlsMediaSource
import com.google.android.exoplayer2.upstream.DefaultHttpDataSource
import androidx.core.view.WindowCompat
import androidx.core.view.WindowInsetsCompat
import androidx.core.view.WindowInsetsControllerCompat
import androidx.media3.common.MediaItem
import androidx.media3.exoplayer.ExoPlayer
import com.halil.ozel.exoplayerscreenlock.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {

private var playbackPosition = 0L

private lateinit var binding: ActivityMainBinding
private var exoPlayer: ExoPlayer? = null
private lateinit var imageViewFullScreen: ImageView
private lateinit var imageViewLock: ImageView
private lateinit var linearLayoutControlUp: LinearLayout
private lateinit var linearLayoutControlBottom: LinearLayout
private var player: ExoPlayer? = null

private lateinit var fullScreenButton: ImageView
private lateinit var lockButton: ImageView
private lateinit var topControls: LinearLayout
private lateinit var bottomControls: LinearLayout

private var playbackPosition = 0L
private var playWhenReady = true
private var isFullScreen = false
private var isLocked = false

@SuppressLint("SourceLockedOrientationActivity")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
restorePlayerState(savedInstanceState)
configureEdgeToEdgePlayer()
setView()
preparePlayer()
setFindViewById()
setLockScreen()
setFullScreen()
bindControllerViews()
setupControls()
setupBackNavigation()
initializePlayer()
}

override fun onStart() {
super.onStart()
if (player == null) initializePlayer()
}

override fun onResume() {
super.onResume()
if (player == null) initializePlayer()
updateSystemBars()
player?.playWhenReady = playWhenReady
}

override fun onPause() {
savePlaybackState()
player?.pause()
super.onPause()
}

override fun onStop() {
savePlaybackState()
releasePlayer()
super.onStop()
}

override fun onDestroy() {
releasePlayer()
super.onDestroy()
}

override fun onSaveInstanceState(outState: Bundle) {
savePlaybackState()
outState.putLong(KEY_PLAYBACK_POSITION, playbackPosition)
outState.putBoolean(KEY_PLAY_WHEN_READY, playWhenReady)
outState.putBoolean(KEY_IS_FULLSCREEN, isFullScreen)
outState.putBoolean(KEY_IS_LOCKED, isLocked)
super.onSaveInstanceState(outState)
}

private fun setView() {
binding = ActivityMainBinding.inflate(layoutInflater)
val view = binding.root
setContentView(view)
setContentView(binding.root)
}

private fun setFindViewById() {
imageViewFullScreen = findViewById(R.id.imageViewFullScreen)
imageViewLock = findViewById(R.id.imageViewLock)
linearLayoutControlUp = findViewById(R.id.linearLayoutControlUp)
linearLayoutControlBottom = findViewById(R.id.linearLayoutControlBottom)
private fun configureEdgeToEdgePlayer() {
WindowCompat.setDecorFitsSystemWindows(window, false)
WindowCompat.getInsetsController(window, window.decorView).systemBarsBehavior =
WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
}

private fun preparePlayer() {
exoPlayer = ExoPlayer.Builder(this).setSeekBackIncrementMs(INCREMENT_MILLIS)
.setSeekForwardIncrementMs(INCREMENT_MILLIS)
.build()
exoPlayer?.playWhenReady = true
binding.player.player = exoPlayer
val defaultHttpDataSourceFactory = DefaultHttpDataSource.Factory()
val mediaItem =
MediaItem.fromUri(URL)
val mediaSource =
HlsMediaSource.Factory(defaultHttpDataSourceFactory).createMediaSource(mediaItem)
exoPlayer?.apply {
setMediaSource(mediaSource)
seekTo(playbackPosition)
playWhenReady = playWhenReady
prepare()
}
private fun bindControllerViews() {
fullScreenButton = findViewById(R.id.imageViewFullScreen)
lockButton = findViewById(R.id.imageViewLock)
topControls = findViewById(R.id.linearLayoutControlUp)
bottomControls = findViewById(R.id.linearLayoutControlBottom)
}

private fun setupControls() {
updateLockState()
updateFullScreenState()

private fun lockScreen(lock: Boolean) {
if (lock) {
linearLayoutControlUp.visibility = View.INVISIBLE
linearLayoutControlBottom.visibility = View.INVISIBLE
} else {
linearLayoutControlUp.visibility = View.VISIBLE
linearLayoutControlBottom.visibility = View.VISIBLE
lockButton.setOnClickListener {
isLocked = !isLocked
updateLockState()
}

fullScreenButton.setOnClickListener {
toggleFullScreen()
}
}

private fun setLockScreen() {
imageViewLock.setOnClickListener {
if (!isLock) {
imageViewLock.setImageDrawable(
ContextCompat.getDrawable(
applicationContext,
R.drawable.ic_baseline_lock
)
)
} else {
imageViewLock.setImageDrawable(
ContextCompat.getDrawable(
applicationContext,
R.drawable.ic_baseline_lock_open
)
)
private fun setupBackNavigation() {
onBackPressedDispatcher.addCallback(
this,
object : OnBackPressedCallback(true) {
override fun handleOnBackPressed() {
when {
isLocked -> Unit
isFullScreen || resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE ->
exitFullScreen()
else -> {
isEnabled = false
onBackPressedDispatcher.onBackPressed()
}
}
}
}
isLock = !isLock
lockScreen(isLock)
}
)
}

@SuppressLint("SourceLockedOrientationActivity")
private fun setFullScreen() {
imageViewFullScreen.setOnClickListener {
if (!isFullScreen) {
imageViewFullScreen.setImageDrawable(
ContextCompat.getDrawable(
applicationContext,
R.drawable.ic_baseline_fullscreen_exit
)
)
requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE
} else {
imageViewFullScreen.setImageDrawable(
ContextCompat.getDrawable(
applicationContext,
R.drawable.ic_baseline_fullscreen
)
)
requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
private fun restorePlayerState(savedInstanceState: Bundle?) {
savedInstanceState ?: return
playbackPosition = savedInstanceState.getLong(KEY_PLAYBACK_POSITION, 0L)
playWhenReady = savedInstanceState.getBoolean(KEY_PLAY_WHEN_READY, true)
isFullScreen = savedInstanceState.getBoolean(KEY_IS_FULLSCREEN, false)
isLocked = savedInstanceState.getBoolean(KEY_IS_LOCKED, false)
}

private fun initializePlayer() {
if (player != null) return

player = ExoPlayer.Builder(this)
.setSeekBackIncrementMs(SEEK_INCREMENT_MILLIS)
.setSeekForwardIncrementMs(SEEK_INCREMENT_MILLIS)
.build()
.also { exoPlayer ->
binding.player.player = exoPlayer
exoPlayer.setMediaItem(MediaItem.fromUri(STREAM_URL))
exoPlayer.seekTo(playbackPosition)
exoPlayer.playWhenReady = playWhenReady
exoPlayer.prepare()
}
isFullScreen = !isFullScreen
}

private fun savePlaybackState() {
player?.let { exoPlayer ->
playbackPosition = exoPlayer.currentPosition.coerceAtLeast(0L)
playWhenReady = exoPlayer.playWhenReady
}
}

@Deprecated("Deprecated in Java")
override fun onBackPressed() {
if (isLock) return
if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
imageViewFullScreen.performClick()
} else super.onBackPressed()
private fun releasePlayer() {
savePlaybackState()
binding.player.player = null
player?.release()
player = null
}

private fun updateLockState() {
val controlsVisibility = if (isLocked) View.INVISIBLE else View.VISIBLE
topControls.visibility = controlsVisibility
bottomControls.visibility = controlsVisibility
lockButton.setImageResource(
if (isLocked) R.drawable.ic_baseline_lock else R.drawable.ic_baseline_lock_open
)
lockButton.contentDescription = getString(
if (isLocked) R.string.unlock_controls else R.string.lock_controls
)
}

override fun onStop() {
super.onStop()
exoPlayer?.stop()
@SuppressLint("SourceLockedOrientationActivity")
private fun toggleFullScreen() {
if (isFullScreen) {
exitFullScreen()
} else {
isFullScreen = true
requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE
updateFullScreenState()
}
}

override fun onDestroy() {
super.onDestroy()
exoPlayer?.release()
@SuppressLint("SourceLockedOrientationActivity")
private fun exitFullScreen() {
isFullScreen = false
requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
updateFullScreenState()
}

override fun onPause() {
super.onPause()
exoPlayer?.pause()
private fun updateFullScreenState() {
fullScreenButton.setImageDrawable(
ContextCompat.getDrawable(
this,
if (isFullScreen) R.drawable.ic_baseline_fullscreen_exit else R.drawable.ic_baseline_fullscreen
)
)
fullScreenButton.contentDescription = getString(
if (isFullScreen) R.string.exit_full_screen else R.string.enter_full_screen
)
updateSystemBars()
}

private fun updateSystemBars() {
val controller = WindowCompat.getInsetsController(window, window.decorView)
if (isFullScreen || resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
controller.hide(WindowInsetsCompat.Type.systemBars())
} else {
controller.show(WindowInsetsCompat.Type.systemBars())
}
}

companion object {
private const val URL = "https://d1gnaphp93fop2.cloudfront.net/videos/multiresolution/rendition_new10.m3u8"
private var isFullScreen = false
private var isLock = false
private const val INCREMENT_MILLIS = 5000L
private const val STREAM_URL =
"https://d1gnaphp93fop2.cloudfront.net/videos/multiresolution/rendition_new10.m3u8"
private const val SEEK_INCREMENT_MILLIS = 5_000L
private const val KEY_PLAYBACK_POSITION = "playback_position"
private const val KEY_PLAY_WHEN_READY = "play_when_ready"
private const val KEY_IS_FULLSCREEN = "is_fullscreen"
private const val KEY_IS_LOCKED = "is_locked"
}
}
}
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