diff --git a/application/donations/src/main/java/org/videolan/vlc/donations/util/IabHelper.kt b/application/donations/src/main/java/org/videolan/vlc/donations/util/IabHelper.kt
index 53bb462be..17fc5d86a 100644
--- a/application/donations/src/main/java/org/videolan/vlc/donations/util/IabHelper.kt
+++ b/application/donations/src/main/java/org/videolan/vlc/donations/util/IabHelper.kt
@@ -21,10 +21,7 @@ import android.content.Context
 import android.content.Intent
 import android.content.IntentSender.SendIntentException
 import android.content.ServiceConnection
-import android.os.Bundle
-import android.os.Handler
-import android.os.IBinder
-import android.os.RemoteException
+import android.os.*
 import android.text.TextUtils
 import android.util.Log
 import com.android.vending.billing.IInAppBillingService
@@ -522,11 +519,11 @@ class IabHelper(ctx: Context, base64PublicKey: String?) {
      */
     fun queryInventoryAsync(querySkuDetails: Boolean, moreSkus: List<String?>?,
                             listener: QueryInventoryFinishedListener?) {
-        val handler = Handler()
+        val handler = Handler(Looper.getMainLooper())
         checkNotDisposed()
         checkSetupDone("queryInventory")
         flagStartAsync("refresh inventory")
-        Thread(Runnable {
+        Thread {
             var result = IabResult(BILLING_RESPONSE_RESULT_OK, "Inventory refresh successful.")
             var inv: Inventory? = null
             try {
@@ -540,7 +537,7 @@ class IabHelper(ctx: Context, base64PublicKey: String?) {
             if (!mDisposed && listener != null) {
                 handler.post { listener.onQueryInventoryFinished(result_f, inv_f) }
             }
-        }).start()
+        }.start()
     }
 
     fun queryInventoryAsync(listener: QueryInventoryFinishedListener?) {
@@ -814,9 +811,9 @@ class IabHelper(ctx: Context, base64PublicKey: String?) {
     fun consumeAsyncInternal(purchases: List<Purchase>,
                              singleListener: ((purchase: Purchase?, result: IabResult?)-> Unit)?,
                              multiListener: OnConsumeMultiFinishedListener?) {
-        val handler = Handler()
+        val handler = Handler(Looper.getMainLooper())
         flagStartAsync("consume")
-        Thread(Runnable {
+        Thread {
             val results: MutableList<IabResult> = ArrayList()
             for (purchase in purchases) {
                 try {
@@ -833,7 +830,7 @@ class IabHelper(ctx: Context, base64PublicKey: String?) {
             if (!mDisposed && multiListener != null) {
                 handler.post { multiListener.onConsumeMultiFinished(purchases, results) }
             }
-        }).start()
+        }.start()
     }
 
     fun logDebug(msg: String?) {
diff --git a/application/television/src/main/java/org/videolan/television/ui/audioplayer/AudioPlayerActivity.kt b/application/television/src/main/java/org/videolan/television/ui/audioplayer/AudioPlayerActivity.kt
index 6957a6470..63ae0efeb 100644
--- a/application/television/src/main/java/org/videolan/television/ui/audioplayer/AudioPlayerActivity.kt
+++ b/application/television/src/main/java/org/videolan/television/ui/audioplayer/AudioPlayerActivity.kt
@@ -26,6 +26,7 @@ import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.os.Handler
+import android.os.Looper
 import android.support.v4.media.session.PlaybackStateCompat
 import android.text.format.DateFormat
 import android.view.*
@@ -66,7 +67,7 @@ class AudioPlayerActivity : BaseTvActivity(),KeycodeListener  {
 
     private lateinit var binding: TvAudioPlayerBinding
     private lateinit var adapter: PlaylistAdapter
-    private val handler = Handler()
+    private val handler = Handler(Looper.getMainLooper())
     private var lastMove: Long = 0
     private var shuffling = false
     private var currentCoverArt: String? = null
diff --git a/application/tools/src/main/java/org/videolan/tools/WeakHandler.kt b/application/tools/src/main/java/org/videolan/tools/WeakHandler.kt
index 25658a8b1..f08c8ae9f 100644
--- a/application/tools/src/main/java/org/videolan/tools/WeakHandler.kt
+++ b/application/tools/src/main/java/org/videolan/tools/WeakHandler.kt
@@ -21,10 +21,11 @@
 package org.videolan.tools
 
 import android.os.Handler
+import android.os.Looper
 
 import java.lang.ref.WeakReference
 
-abstract class WeakHandler<T>(owner: T) : Handler() {
+abstract class WeakHandler<T>(owner: T) : Handler(Looper.getMainLooper()) {
     private val mOwner: WeakReference<T> = WeakReference(owner)
 
     val owner: T?
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/HistoryAdapter.kt b/application/vlc-android/src/org/videolan/vlc/gui/HistoryAdapter.kt
index 248f78687..ae718d595 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/HistoryAdapter.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/HistoryAdapter.kt
@@ -20,6 +20,7 @@
 package org.videolan.vlc.gui
 
 import android.os.Handler
+import android.os.Looper
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -51,7 +52,7 @@ class HistoryAdapter(private val inCards: Boolean = false, private val listEvent
     val updateEvt : LiveData<Unit> = MutableLiveData()
     private lateinit var layoutInflater: LayoutInflater
     var multiSelectHelper: MultiSelectHelper<MediaWrapper> = MultiSelectHelper(this, UPDATE_SELECTION)
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
 
     inner class ViewHolder(binding: ViewDataBinding) : SelectorViewHolder<ViewDataBinding>(binding), MarqueeViewHolder {
 
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioBrowserAdapter.kt b/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioBrowserAdapter.kt
index d772aff98..5e12e7007 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioBrowserAdapter.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioBrowserAdapter.kt
@@ -28,6 +28,7 @@ import android.content.Context
 import android.graphics.drawable.BitmapDrawable
 import android.os.Build
 import android.os.Handler
+import android.os.Looper
 import android.view.LayoutInflater
 import android.view.MotionEvent
 import android.view.View
@@ -89,7 +90,7 @@ open class AudioBrowserAdapter @JvmOverloads constructor(
     private var focusNext = -1
     private var focusListener: FocusListener? = null
     lateinit var inflater: LayoutInflater
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
     var stopReorder = false
 
     protected fun inflaterInitialized() = ::inflater.isInitialized
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioPlayer.kt b/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioPlayer.kt
index ee842dd3f..d87311d5c 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioPlayer.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/audio/AudioPlayer.kt
@@ -25,6 +25,7 @@ import android.content.Intent
 import android.content.SharedPreferences
 import android.os.Bundle
 import android.os.Handler
+import android.os.Looper
 import android.os.Vibrator
 import android.support.v4.media.session.PlaybackStateCompat
 import android.text.Editable
@@ -97,7 +98,7 @@ class AudioPlayer : Fragment(), PlaylistAdapter.IPlayer, TextWatcher, IAudioPlay
     private lateinit var binding: AudioPlayerBinding
     private lateinit var playlistAdapter: PlaylistAdapter
     private lateinit var settings: SharedPreferences
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
     lateinit var playlistModel: PlaylistModel
     lateinit var bookmarkModel: BookmarkModel
     private lateinit var optionsDelegate: PlayerOptionsDelegate
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/audio/PlaylistAdapter.kt b/application/vlc-android/src/org/videolan/vlc/gui/audio/PlaylistAdapter.kt
index 036cca4cd..a81b9fdd1 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/audio/PlaylistAdapter.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/audio/PlaylistAdapter.kt
@@ -29,6 +29,7 @@ import android.graphics.Typeface
 import android.graphics.drawable.BitmapDrawable
 import android.os.Build
 import android.os.Handler
+import android.os.Looper
 import android.os.Message
 import android.view.LayoutInflater
 import android.view.View
@@ -71,7 +72,7 @@ class PlaylistAdapter(private val player: IPlayer) : DiffUtilAdapter<MediaWrappe
     private var defaultCoverAudio: BitmapDrawable
     private var model: PlaylistModel? = null
     private var currentPlayingVisu: MiniVisualizer? = null
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
 
     init {
         val ctx = when (player) {
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/browser/BaseBrowserAdapter.kt b/application/vlc-android/src/org/videolan/vlc/gui/browser/BaseBrowserAdapter.kt
index 33c38484c..978c28327 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/browser/BaseBrowserAdapter.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/browser/BaseBrowserAdapter.kt
@@ -26,6 +26,7 @@ import android.annotation.TargetApi
 import android.graphics.drawable.BitmapDrawable
 import android.os.Build
 import android.os.Handler
+import android.os.Looper
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -72,7 +73,7 @@ open class BaseBrowserAdapter(val browserContainer: BrowserContainer<MediaLibrar
     internal var mediaCount = 0
     private var networkRoot = false
     private var specialIcons = false
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
 
     val diffCallback = BrowserDiffCallback()
 
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/dialogs/adapters/TrackAdapter.kt b/application/vlc-android/src/org/videolan/vlc/gui/dialogs/adapters/TrackAdapter.kt
index 636ce53b2..d8b10de53 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/dialogs/adapters/TrackAdapter.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/dialogs/adapters/TrackAdapter.kt
@@ -25,6 +25,7 @@
 package org.videolan.vlc.gui.dialogs.adapters
 
 import android.os.Handler
+import android.os.Looper
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
@@ -36,7 +37,7 @@ import org.videolan.vlc.gui.helpers.enableMarqueeEffect
 class TrackAdapter(private val tracks: Array<VlcTrack>, var selectedTrack: VlcTrack?, val trackTypePrefix:String) : RecyclerView.Adapter<TrackAdapter.ViewHolder>() {
 
     lateinit var trackSelectedListener: (VlcTrack) -> Unit
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/helpers/BookmarkAdapter.kt b/application/vlc-android/src/org/videolan/vlc/gui/helpers/BookmarkAdapter.kt
index 751585784..a22108215 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/helpers/BookmarkAdapter.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/helpers/BookmarkAdapter.kt
@@ -27,6 +27,7 @@ package org.videolan.vlc.gui.helpers
 import android.annotation.TargetApi
 import android.os.Build
 import android.os.Handler
+import android.os.Looper
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -42,7 +43,7 @@ import org.videolan.vlc.gui.DiffUtilAdapter
 
 class BookmarkAdapter(val bookmarkManager: IBookmarkManager) :
     DiffUtilAdapter<Bookmark, BookmarkAdapter.ViewHolder>() {
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val v = LayoutInflater.from(parent.context)
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/network/MRLAdapter.kt b/application/vlc-android/src/org/videolan/vlc/gui/network/MRLAdapter.kt
index e6dc1b3e9..17e535b8d 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/network/MRLAdapter.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/network/MRLAdapter.kt
@@ -22,6 +22,7 @@ package org.videolan.vlc.gui.network
 
 import android.net.Uri
 import android.os.Handler
+import android.os.Looper
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -44,7 +45,7 @@ private const val TYPE_DUMMY = 2
 
 internal class MRLAdapter(private val eventActor: SendChannel<MrlAction>, private val inCards: Boolean = false) : DiffUtilAdapter<MediaWrapper, RecyclerView.ViewHolder>() {
     private var dummyClickListener: (() -> Unit)? = null
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerResizeDelegate.kt b/application/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerResizeDelegate.kt
index af8cb6d8e..6ba576f5b 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerResizeDelegate.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerResizeDelegate.kt
@@ -25,6 +25,7 @@
 package org.videolan.vlc.gui.video
 
 import android.os.Handler
+import android.os.Looper
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -200,7 +201,7 @@ class SizeAdapter : RecyclerView.Adapter<SizeAdapter.ViewHolder>() {
             notifyItemChanged(field)
         }
     lateinit var sizeSelectedListener: (MediaPlayer.ScaleType) -> Unit
-    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler() }
+    private val handler by lazy(LazyThreadSafetyMode.NONE) { Handler(Looper.getMainLooper()) }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/video/VideoStatsDelegate.kt b/application/vlc-android/src/org/videolan/vlc/gui/video/VideoStatsDelegate.kt
index e744a7cb6..3cbdd43fc 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/video/VideoStatsDelegate.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/video/VideoStatsDelegate.kt
@@ -27,6 +27,7 @@ package org.videolan.vlc.gui.video
 import android.annotation.SuppressLint
 import android.net.Uri
 import android.os.Handler
+import android.os.Looper
 import android.util.Log
 import android.view.MotionEvent
 import android.view.View
@@ -53,7 +54,7 @@ class VideoStatsDelegate(private val player: VideoPlayerActivity, val scrolling:
     lateinit var container: ConstraintLayout
     private var lastMediaUri: Uri? = null
     private var started = false
-    private val plotHandler: Handler = Handler()
+    private val plotHandler: Handler = Handler(Looper.getMainLooper())
     private val firstTimecode = System.currentTimeMillis()
     lateinit var binding: PlayerHudBinding
     private lateinit var constraintSet: ConstraintSet
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/video/VideoTouchDelegate.kt b/application/vlc-android/src/org/videolan/vlc/gui/video/VideoTouchDelegate.kt
index e95316d35..67bd3abdc 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/video/VideoTouchDelegate.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/video/VideoTouchDelegate.kt
@@ -6,6 +6,7 @@ import android.animation.ObjectAnimator
 import android.content.res.Configuration
 import android.media.AudioManager
 import android.os.Handler
+import android.os.Looper
 import android.provider.Settings
 import android.util.DisplayMetrics
 import android.util.Log
@@ -61,7 +62,7 @@ class VideoTouchDelegate(private val player: VideoPlayerActivity,
 
     private val resizeDelegate: VideoPlayerResizeDelegate
         get() = player.resizeDelegate
-    var handler = Handler()
+    var handler = Handler(Looper.getMainLooper())
 
     var numberOfTaps = 0
     var lastTapTimeMs: Long = 0
diff --git a/application/vlc-android/src/org/videolan/vlc/gui/video/benchmark/BenchActivity.kt b/application/vlc-android/src/org/videolan/vlc/gui/video/benchmark/BenchActivity.kt
index 2a2537c08..eece478c4 100644
--- a/application/vlc-android/src/org/videolan/vlc/gui/video/benchmark/BenchActivity.kt
+++ b/application/vlc-android/src/org/videolan/vlc/gui/video/benchmark/BenchActivity.kt
@@ -29,6 +29,7 @@ import android.content.IntentFilter
 import android.content.pm.ActivityInfo
 import android.os.Bundle
 import android.os.Handler
+import android.os.Looper
 import android.support.v4.media.session.PlaybackStateCompat
 import android.util.Log
 import android.view.View
@@ -67,7 +68,7 @@ import java.io.*
 class BenchActivity : ShallowVideoPlayer() {
 
     private lateinit var timeOut: Runnable
-    private val timeoutHandler: Handler = Handler()
+    private val timeoutHandler: Handler = Handler(Looper.getMainLooper())
     private var screenshotsTimestamp: List<Long>? = null
     private var isScreenshot = false
     private var screenshotCount = 0