Andorid 5 bitrot a bit. Fix it

Author: nift4

app/src/main/java/org/akanework/gramophone/logic/utils/PostAmpAudioSink.kt

@@ -40,6 +40,29 @@ class PostAmpAudioSink(
 ) : ForwardingAudioSink(sink), AudioSystemHiddenApi.VolumeChangeListener {
     companion object {
         private const val TAG = "PostAmpAudioSink"
+        val isVolumeAvailable by lazy {
+            try {
+                Volume.isAvailable()
+            } catch (e: Throwable) {
+                Log.e(TAG, "failed to check if volume is available", e)
+                false
+            }
+        }
+        val isDpeAvailable by lazy {
+            try {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                    ReflectionAudioEffect.isEffectTypeAvailable(
+                        AudioEffect.EFFECT_TYPE_DYNAMICS_PROCESSING,
+                        ReflectionAudioEffect.EFFECT_TYPE_NULL
+                    )
+                } else {
+                    false
+                }
+            } catch (e: Throwable) {
+                Log.e(TAG, "failed to check if DPE is available", e)
+                false
+            }
+        }
     }
 
     private val receiver = object : BroadcastReceiver() {
@@ -57,29 +80,6 @@ class PostAmpAudioSink(
     }
     private val audioManager = context.getSystemService<AudioManager>()!!
     private var handler: Handler? = null
-    private val isVolumeAvailable by lazy {
-        try {
-            Volume.isAvailable()
-        } catch (e: Throwable) {
-            Log.e(TAG, "failed to check if volume is available", e)
-            false
-        }
-    }
-    private val isDpeAvailable by lazy {
-        try {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
-                ReflectionAudioEffect.isEffectTypeAvailable(
-                    AudioEffect.EFFECT_TYPE_DYNAMICS_PROCESSING,
-                    ReflectionAudioEffect.EFFECT_TYPE_NULL
-                )
-            } else {
-                false
-            }
-        } catch (e: Throwable) {
-            Log.e(TAG, "failed to check if DPE is available", e)
-            false
-        }
-    }
     private val isDpeOffloadable by lazy {
         try {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {

app/src/main/java/org/akanework/gramophone/ui/components/FullBottomSheet.kt

@@ -14,6 +14,7 @@ import android.text.format.DateFormat
 import android.util.AttributeSet
 import android.view.Gravity
 import android.view.KeyEvent
+import android.view.View
 import android.view.ViewPropertyAnimator
 import android.view.WindowInsets
 import android.widget.LinearLayout
@@ -404,6 +405,9 @@ class FullBottomSheet
             }
         }
 
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            bottomSheetPlaybackSpeedButton.visibility = View.GONE
+        }
         bottomSheetPlaybackSpeedButton.setOnClickListener {
             ViewCompat.performHapticFeedback(it, HapticFeedbackConstantsCompat.CONTEXT_CLICK)
             if (instance != null)

app/src/main/java/org/akanework/gramophone/ui/fragments/settings/AudioSettingsFragment.kt

@@ -20,6 +20,7 @@ package org.akanework.gramophone.ui.fragments.settings
 import android.os.Bundle
 import androidx.preference.Preference
 import org.akanework.gramophone.R
+import org.akanework.gramophone.logic.utils.PostAmpAudioSink
 import org.akanework.gramophone.ui.fragments.BasePreferenceFragment
 import org.akanework.gramophone.ui.fragments.BaseSettingsActivity
 
@@ -30,6 +31,8 @@ class AudioSettingsActivity : BaseSettingsActivity(
 class AudioSettingsFragment : BasePreferenceFragment() {
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.settings_audio, rootKey)
+        findPreference<Preference>("rg_boost_gain_category")!!.isVisible =
+            PostAmpAudioSink.isVolumeAvailable || PostAmpAudioSink.isDpeAvailable
     }
 
     override fun onPreferenceTreeClick(preference: Preference): Boolean {

app/src/main/res/xml/settings_audio.xml

@@ -41,6 +41,7 @@
     </PreferenceCategory>
 
     <PreferenceCategory
+        android:key="rg_boost_gain_category"
         android:title="@string/settings_replaygain_boost"
         app:iconSpaceReserved="false">