individual preferences

app/build.gradle

@@ -3,11 +3,11 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 29
     defaultConfig {
-        applicationId "de.jerleo"
+        applicationId "de.jerleo.autoplay"
         minSdkVersion 26
-        targetSdkVersion 28
+        targetSdkVersion 29
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -22,12 +22,12 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.41"
     implementation 'androidx.appcompat:appcompat:1.0.2'
-    implementation 'androidx.core:core-ktx:1.1.0-alpha04'
+    implementation 'androidx.core:core-ktx:1.2.0-alpha03'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'androidx.legacy:legacy-preference-v14:1.0.0'
     implementation 'androidx.preference:preference:1.0.0'
-    implementation 'com.android.support:design:28.1.0'
+    implementation 'com.google.android.material:material:1.0.0'
 }

app/src/main/java/de/jerleo/autoplay/Audio.kt

@@ -19,23 +19,23 @@ class Audio(
         return manager
     }
 
-    fun startPlayback(): Boolean {
+    fun startPlayback(device: String): Boolean {
 
         if (manager()?.isMusicActive == true) {
             Log.i(Main.TAG, "Music is active")
             return false
         }
 
-        // Get delay in milliseconds from preference
-        val delay = settings.delay() * 1000L
+        // Get delay in milliseconds from device preference
+        val delay = settings.delay(device) * 1000L
 
         // Start playback with delay
-        Handler().postDelayed({ launchAudio() }, delay)
+        Handler().postDelayed({ launchAudio(device) }, delay)
 
         return true
     }
 
-    private fun launchAudio() {
+    private fun launchAudio(device: String) {
 
         Log.i(Main.TAG, "Sending media key event")
         manager()?.let {
@@ -45,15 +45,15 @@ class Audio(
                     KeyEvent.KEYCODE_MEDIA_PLAY
                 )
             )
-            adjustVolume()
+            adjustVolume(device)
         }
     }
 
-    private fun adjustVolume() {
+    private fun adjustVolume(device: String) {
 
         Log.i(Main.TAG, "Adjusting volume")
         manager()?.let {
-            val percentage = settings.volume()
+            val percentage = settings.volume(device)
             val maxVolume = it.getStreamMaxVolume(AudioManager.STREAM_MUSIC)
             val currentVolume = it.getStreamVolume(AudioManager.STREAM_MUSIC)
             val targetVolume = percentage * maxVolume / 100

app/src/main/java/de/jerleo/autoplay/Main.kt

@@ -6,7 +6,7 @@ import android.content.IntentFilter
 import android.os.Bundle
 import android.util.Log
 import androidx.appcompat.app.AppCompatActivity
-import androidx.media.app.NotificationCompat as MediaNotificationCompat
+import androidx.preference.PreferenceManager
 
 class Main : AppCompatActivity() {
 
@@ -33,9 +33,9 @@ class Main : AppCompatActivity() {
     fun startPlayback(device: BluetoothDevice) {
 
         if (settings.isChecked(device))
-            if (audio.startPlayback()) {
+            if (audio.startPlayback(device.address)) {
 
-                Log.i(Main.TAG, "Launching playback")
+                Log.i(TAG, "Launching playback")
                 val text: String = getString(R.string.launching) +
                         ": " + device.name
                 notification.show(getString(R.string.playback), text)
@@ -53,7 +53,11 @@ class Main : AppCompatActivity() {
             .replace(R.id.settings, settings)
             .commit()
 
-        Log.i(Main.TAG, "Listening for bluetooth events")
+        // Monitor preference changes
+        PreferenceManager.getDefaultSharedPreferences(this)
+            .registerOnSharedPreferenceChangeListener(settings)
+
+        Log.i(TAG, "Listening for bluetooth events")
         registerReceiver(
             Bluetooth,
             IntentFilter().apply {
@@ -72,7 +76,7 @@ class Main : AppCompatActivity() {
 
     override fun onDestroy() {
 
-        Log.i(Main.TAG, "Stopped listening for bluetooth events")
+        Log.i(TAG, "Stopped listening for bluetooth events")
         unregisterReceiver(Bluetooth)
         notification.cancel()
         super.onDestroy()