add data saver mode

app/src/main/java/com/github/libretube/Globals.kt

@@ -1,7 +1,16 @@
 package com.github.libretube
 
+/**
+ * Global variables can be stored here
+ */
 object Globals {
+    // for the player fragment
     var isFullScreen = false
     var isMiniPlayerVisible = false
+
+    // for the settings
     var isCurrentViewMainSettings = true
+
+    // for the data saver mode
+    var dataSaverModeEnabled = false
 }

app/src/main/java/com/github/libretube/activities/MainActivity.kt

@@ -75,6 +75,13 @@ class MainActivity : AppCompatActivity() {
                 RetrofitInstance.url
             }
 
+        // save whether the data saver mode is enabled
+        Globals.dataSaverModeEnabled = PreferenceHelper.getBoolean(
+            this,
+            "data_saver_mode",
+            false
+        )
+
         // show noInternet Activity if no internet available on app startup
         if (!ConnectionHelper.isNetworkAvailable(this)) {
             val noInternetIntent = Intent(this, NoInternetActivity::class.java)

app/src/main/java/com/github/libretube/adapters/ChannelAdapter.kt

@@ -12,6 +12,7 @@ import com.github.libretube.databinding.VideoChannelRowBinding
 import com.github.libretube.dialogs.VideoOptionsDialog
 import com.github.libretube.fragments.PlayerFragment
 import com.github.libretube.obj.StreamItem
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.formatShort
 import com.squareup.picasso.Picasso
 
@@ -45,7 +46,7 @@ class ChannelAdapter(
                 DateUtils.getRelativeTimeSpanString(trending.uploaded!!)
             channelDuration.text =
                 DateUtils.formatElapsedTime(trending.duration!!)
-            Picasso.get().load(trending.thumbnail).into(channelThumbnail)
+            ConnectionHelper.loadImage(trending.thumbnail, channelThumbnail)
             root.setOnClickListener {
                 var bundle = Bundle()
                 bundle.putString("videoId", trending.url!!.replace("/watch?v=", ""))

app/src/main/java/com/github/libretube/adapters/ChaptersAdapter.kt

@@ -5,6 +5,7 @@ import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 import com.github.libretube.databinding.ChapterColumnBinding
 import com.github.libretube.obj.ChapterSegment
+import com.github.libretube.util.ConnectionHelper
 import com.google.android.exoplayer2.ExoPlayer
 import com.squareup.picasso.Picasso
 
@@ -23,7 +24,7 @@ class ChaptersAdapter(
     override fun onBindViewHolder(holder: ChaptersViewHolder, position: Int) {
         val chapter = chapters[position]
         holder.binding.apply {
-            Picasso.get().load(chapter.image).fit().centerCrop().into(chapterImage)
+            ConnectionHelper.loadImage(chapter.image, chapterImage)
             chapterTitle.text = chapter.title
 
             root.setOnClickListener {

app/src/main/java/com/github/libretube/adapters/CommentsAdapter.kt

@@ -14,6 +14,7 @@ import com.github.libretube.activities.MainActivity
 import com.github.libretube.databinding.CommentsRowBinding
 import com.github.libretube.obj.Comment
 import com.github.libretube.obj.CommentsPage
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.RetrofitInstance
 import com.github.libretube.util.formatShort
 import com.squareup.picasso.Picasso
@@ -53,7 +54,7 @@ class CommentsAdapter(
                 " • " + comment.commentedTime.toString()
             commentText.text =
                 comment.commentText.toString()
-            Picasso.get().load(comment.thumbnail).fit().centerCrop().into(commentorImage)
+            ConnectionHelper.loadImage(comment.thumbnail, commentorImage)
             likesTextView.text =
                 comment.likeCount?.toLong().formatShort()
             if (comment.verified == true) {

app/src/main/java/com/github/libretube/adapters/PlaylistAdapter.kt

@@ -17,6 +17,7 @@ import com.github.libretube.fragments.PlayerFragment
 import com.github.libretube.obj.PlaylistId
 import com.github.libretube.obj.StreamItem
 import com.github.libretube.preferences.PreferenceHelper
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.RetrofitInstance
 import com.squareup.picasso.Picasso
 import kotlinx.coroutines.CoroutineScope
@@ -55,7 +56,7 @@ class PlaylistAdapter(
             playlistTitle.text = streamItem.title
             playlistDescription.text = streamItem.uploaderName
             playlistDuration.text = DateUtils.formatElapsedTime(streamItem.duration!!)
-            Picasso.get().load(streamItem.thumbnail).into(playlistThumbnail)
+            ConnectionHelper.loadImage(streamItem.thumbnail, playlistThumbnail)
             root.setOnClickListener {
                 var bundle = Bundle()
                 bundle.putString("videoId", streamItem.url!!.replace("/watch?v=", ""))

app/src/main/java/com/github/libretube/adapters/PlaylistsAdapter.kt

@@ -12,6 +12,7 @@ import com.github.libretube.databinding.PlaylistsRowBinding
 import com.github.libretube.obj.PlaylistId
 import com.github.libretube.obj.Playlists
 import com.github.libretube.preferences.PreferenceHelper
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.RetrofitInstance
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.squareup.picasso.Picasso
@@ -45,7 +46,7 @@ class PlaylistsAdapter(
     override fun onBindViewHolder(holder: PlaylistsViewHolder, position: Int) {
         val playlist = playlists[position]
         holder.binding.apply {
-            Picasso.get().load(playlist.thumbnail).into(playlistThumbnail)
+            ConnectionHelper.loadImage(playlist.thumbnail, playlistThumbnail)
             // set imageview drawable as empty playlist if imageview empty
             if (playlistThumbnail.drawable == null) {
                 playlistThumbnail.setImageResource(R.drawable.ic_empty_playlist)

app/src/main/java/com/github/libretube/adapters/RepliesAdapter.kt

@@ -10,6 +10,7 @@ import com.github.libretube.R
 import com.github.libretube.activities.MainActivity
 import com.github.libretube.databinding.RepliesRowBinding
 import com.github.libretube.obj.Comment
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.formatShort
 import com.squareup.picasso.Picasso
 
@@ -44,7 +45,7 @@ class RepliesAdapter(
                 " • " + reply.commentedTime.toString()
             commentText.text =
                 reply.commentText.toString()
-            Picasso.get().load(reply.thumbnail).fit().centerCrop().into(commentorImage)
+            ConnectionHelper.loadImage(reply.thumbnail, commentorImage)
             likesTextView.text =
                 reply.likeCount?.toLong().formatShort()
             if (reply.verified == true) {

app/src/main/java/com/github/libretube/adapters/SearchAdapter.kt

@@ -20,6 +20,7 @@ import com.github.libretube.fragments.PlayerFragment
 import com.github.libretube.obj.SearchItem
 import com.github.libretube.obj.Subscribe
 import com.github.libretube.preferences.PreferenceHelper
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.RetrofitInstance
 import com.github.libretube.util.formatShort
 import com.squareup.picasso.Picasso
@@ -84,14 +85,14 @@ class SearchAdapter(
 
     private fun bindWatch(item: SearchItem, binding: VideoSearchRowBinding) {
         binding.apply {
-            Picasso.get().load(item.thumbnail).fit().centerCrop().into(searchThumbnail)
+            ConnectionHelper.loadImage(item.thumbnail, searchThumbnail)
             if (item.duration != -1L) {
                 searchThumbnailDuration.text = DateUtils.formatElapsedTime(item.duration!!)
             } else {
                 searchThumbnailDuration.text = root.context.getString(R.string.live)
                 searchThumbnailDuration.setBackgroundColor(R.attr.colorPrimaryDark)
             }
-            Picasso.get().load(item.uploaderAvatar).fit().centerCrop().into(searchChannelImage)
+            ConnectionHelper.loadImage(item.uploaderAvatar, searchChannelImage)
             searchDescription.text = item.title
             val viewsString = if (item.views?.toInt() != -1) item.views.formatShort() else ""
             val uploadDate = if (item.uploadedDate != null) item.uploadedDate else ""
@@ -131,7 +132,7 @@ class SearchAdapter(
 
     private fun bindChannel(item: SearchItem, binding: ChannelSearchRowBinding) {
         binding.apply {
-            Picasso.get().load(item.thumbnail).fit().centerCrop().into(searchChannelImage)
+            ConnectionHelper.loadImage(item.thumbnail, searchChannelImage)
             searchChannelName.text = item.name
             searchViews.text = root.context.getString(
                 R.string.subscribers,
@@ -219,7 +220,7 @@ class SearchAdapter(
 
     private fun bindPlaylist(item: SearchItem, binding: PlaylistSearchRowBinding) {
         binding.apply {
-            Picasso.get().load(item.thumbnail).fit().centerCrop().into(searchThumbnail)
+            ConnectionHelper.loadImage(item.thumbnail, searchThumbnail)
             if (item.videos?.toInt() != -1) searchPlaylistNumber.text = item.videos.toString()
             searchDescription.text = item.name
             searchName.text = item.uploaderName

app/src/main/java/com/github/libretube/adapters/SubscriptionAdapter.kt

@@ -15,6 +15,7 @@ import com.github.libretube.databinding.TrendingRowBinding
 import com.github.libretube.dialogs.VideoOptionsDialog
 import com.github.libretube.fragments.PlayerFragment
 import com.github.libretube.obj.StreamItem
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.formatShort
 import com.squareup.picasso.Picasso
 
@@ -72,8 +73,8 @@ class SubscriptionAdapter(
                 } catch (e: Exception) {
                 }
             }
-            Picasso.get().load(trending.thumbnail).into(thumbnail)
-            Picasso.get().load(trending.uploaderAvatar).into(channelImage)
+            ConnectionHelper.loadImage(trending.thumbnail, thumbnail)
+            ConnectionHelper.loadImage(trending.uploaderAvatar, channelImage)
             root.setOnClickListener {
                 val bundle = Bundle()
                 bundle.putString("videoId", trending.url!!.replace("/watch?v=", ""))

app/src/main/java/com/github/libretube/adapters/SubscriptionChannelAdapter.kt

@@ -12,6 +12,7 @@ import com.github.libretube.databinding.ChannelSubscriptionRowBinding
 import com.github.libretube.obj.Subscribe
 import com.github.libretube.obj.Subscription
 import com.github.libretube.preferences.PreferenceHelper
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.RetrofitInstance
 import com.squareup.picasso.Picasso
 import kotlinx.coroutines.CoroutineScope
@@ -40,7 +41,7 @@ class SubscriptionChannelAdapter(private val subscriptions: MutableList<Subscrip
         val subscription = subscriptions[position]
         holder.binding.apply {
             subscriptionChannelName.text = subscription.name
-            Picasso.get().load(subscription.avatar).into(subscriptionChannelImage)
+            ConnectionHelper.loadImage(subscription.avatar, subscriptionChannelImage)
             root.setOnClickListener {
                 val activity = root.context as MainActivity
                 val bundle = bundleOf("channel_id" to subscription.url)

app/src/main/java/com/github/libretube/adapters/TrendingAdapter.kt

@@ -15,6 +15,7 @@ import com.github.libretube.databinding.TrendingRowBinding
 import com.github.libretube.dialogs.VideoOptionsDialog
 import com.github.libretube.fragments.PlayerFragment
 import com.github.libretube.obj.StreamItem
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.formatShort
 import com.squareup.picasso.Picasso
 
@@ -63,12 +64,8 @@ class TrendingAdapter(
                 } catch (e: Exception) {
                 }
             }
-            if (trending.thumbnail!!.isNotEmpty()) {
-                Picasso.get().load(trending.thumbnail).into(thumbnail)
-            }
-            if (trending.uploaderAvatar!!.isNotEmpty()) {
-                Picasso.get().load(trending.uploaderAvatar).into(channelImage)
-            }
+            ConnectionHelper.loadImage(trending.thumbnail, thumbnail)
+            ConnectionHelper.loadImage(trending.uploaderAvatar, channelImage)
 
             root.setOnClickListener {
                 var bundle = Bundle()

app/src/main/java/com/github/libretube/adapters/WatchHistoryAdapter.kt

@@ -15,6 +15,7 @@ import com.github.libretube.databinding.WatchHistoryRowBinding
 import com.github.libretube.dialogs.VideoOptionsDialog
 import com.github.libretube.fragments.PlayerFragment
 import com.github.libretube.obj.WatchHistoryItem
+import com.github.libretube.util.ConnectionHelper
 import com.squareup.picasso.Picasso
 
 class WatchHistoryAdapter(
@@ -43,8 +44,8 @@ class WatchHistoryAdapter(
             channelName.text = video.uploader
             uploadDate.text = video.uploadDate
             thumbnailDuration.text = DateUtils.formatElapsedTime(video.duration?.toLong()!!)
-            Picasso.get().load(video.thumbnailUrl).into(thumbnail)
-            Picasso.get().load(video.uploaderAvatar).into(channelImage)
+            ConnectionHelper.loadImage(video.thumbnailUrl, thumbnail)
+            ConnectionHelper.loadImage(video.uploaderAvatar, channelImage)
 
             channelImage.setOnClickListener {
                 val activity = root.context as MainActivity

app/src/main/java/com/github/libretube/fragments/ChannelFragment.kt

@@ -14,6 +14,7 @@ import com.github.libretube.adapters.ChannelAdapter
 import com.github.libretube.databinding.FragmentChannelBinding
 import com.github.libretube.obj.Subscribe
 import com.github.libretube.preferences.PreferenceHelper
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.RetrofitInstance
 import com.github.libretube.util.formatShort
 import com.squareup.picasso.Picasso
@@ -194,8 +195,8 @@ class ChannelFragment : Fragment() {
                         binding.channelDescription.text = response.description?.trim()
                     }
 
-                    Picasso.get().load(response.bannerUrl).into(binding.channelBanner)
-                    Picasso.get().load(response.avatarUrl).into(binding.channelImage)
+                    ConnectionHelper.loadImage(response.bannerUrl, binding.channelBanner)
+                    ConnectionHelper.loadImage(response.avatarUrl, binding.channelImage)
                     channelAdapter = ChannelAdapter(
                         response.relatedStreams!!.toMutableList(),
                         childFragmentManager

app/src/main/java/com/github/libretube/fragments/PlayerFragment.kt

@@ -57,6 +57,7 @@ import com.github.libretube.obj.Subscribe
 import com.github.libretube.preferences.PreferenceHelper
 import com.github.libretube.services.IS_DOWNLOAD_RUNNING
 import com.github.libretube.util.BackgroundMode
+import com.github.libretube.util.ConnectionHelper
 import com.github.libretube.util.CronetHelper
 import com.github.libretube.util.DescriptionAdapter
 import com.github.libretube.util.RetrofitInstance
@@ -87,7 +88,6 @@ import com.google.android.exoplayer2.util.RepeatModeUtil
 import com.google.android.exoplayer2.video.VideoSize
 import com.google.android.material.button.MaterialButton
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
-import com.squareup.picasso.Picasso
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -739,17 +739,19 @@ class PlayerFragment : Fragment() {
     }
 
     private fun initializePlayerView(view: View, response: Streams) {
-        binding.playerViewsInfo.text =
-            context?.getString(R.string.views, response.views.formatShort()) +
-            " • " + response.uploadDate
-        binding.textLike.text = response.likes.formatShort()
-        binding.textDislike.text = response.dislikes.formatShort()
-        Picasso.get().load(response.uploaderAvatar).into(binding.playerChannelImage)
-        binding.playerChannelName.text = response.uploader
+        binding.apply {
+            playerViewsInfo.text =
+                context?.getString(R.string.views, response.views.formatShort()) +
+                " • " + response.uploadDate
+            textLike.text = response.likes.formatShort()
+            textDislike.text = response.dislikes.formatShort()
+            ConnectionHelper.loadImage(response.uploaderAvatar, binding.playerChannelImage)
+            playerChannelName.text = response.uploader
 
-        binding.titleTextView.text = response.title
-        binding.playerTitle.text = response.title
-        binding.playerDescription.text = response.description
+            titleTextView.text = response.title
+            playerTitle.text = response.title
+            playerDescription.text = response.description
+        }
 
         playerBinding.exoTitle.text = response.title
 

app/src/main/java/com/github/libretube/preferences/AdvancedSettings.kt

@@ -3,6 +3,7 @@ package com.github.libretube.preferences
 import android.os.Bundle
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SwitchPreferenceCompat
 import com.github.libretube.R
 import com.github.libretube.activities.SettingsActivity
 import com.github.libretube.dialogs.RequireRestartDialog
@@ -32,6 +33,13 @@ class AdvancedSettings : PreferenceFragmentCompat() {
             true
         }
 
+        val dataSaverMode = findPreference<SwitchPreferenceCompat>("data_saver_mode")
+        dataSaverMode?.setOnPreferenceChangeListener { _, _ ->
+            val restartDialog = RequireRestartDialog()
+            restartDialog.show(childFragmentManager, "RequireRestartDialog")
+            true
+        }
+
         val resetSettings = findPreference<Preference>("reset_settings")
         resetSettings?.setOnPreferenceClickListener {
             showResetDialog()

app/src/main/java/com/github/libretube/util/ConnectionHelper.kt

@@ -1,7 +1,11 @@
 package com.github.libretube.util
 
 import android.content.Context
+import android.graphics.Color
 import android.net.ConnectivityManager
+import android.widget.ImageView
+import com.github.libretube.Globals
+import com.squareup.picasso.Picasso
 
 object ConnectionHelper {
     fun isNetworkAvailable(context: Context): Boolean {
@@ -33,4 +37,12 @@ object ConnectionHelper {
 
         return connectivityManager.activeNetworkInfo?.isConnected ?: false
     }
+
+    // load an image from a url into an imageView
+    fun loadImage(url: String?, target: ImageView) {
+        // only load the image if the data saver mode is disabled
+        if (!Globals.dataSaverModeEnabled) {
+            Picasso.get().load(url).fit().centerCrop().into(target)
+        }
+    }
 }

app/src/main/res/drawable/ic_data_saver.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?android:attr/colorControlNormal"
+    android:viewportWidth="48"
+    android:viewportHeight="48">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M22.55,31.45L22.55,25.4L16.5,25.4v-3h6.05v-6.05h3v6.05h6v3h-6v6.05ZM42.15,32.55 L37.75,30.1q0.6,-1.55 0.9,-3.075 0.3,-1.525 0.3,-3.025 0,-5.8 -3.825,-10.05Q31.3,9.7 25.6,9.2L25.6,4.1q7.85,0.55 13.15,6.225Q44.05,16 44.05,23.8q0,2.25 -0.475,4.425T42.15,32.55ZM24.05,44q-4.1,0 -7.75,-1.575 -3.65,-1.575 -6.375,-4.275t-4.3,-6.35Q4.05,28.15 4.05,24.05q0,-7.9 5.325,-13.6Q14.7,4.75 22.6,4.15v5.1q-5.75,0.55 -9.6,4.775Q9.15,18.25 9.15,24.05q0,6.2 4.35,10.525T24.05,38.9q3.6,0 6.8,-1.625 3.2,-1.625 5.45,-4.575l4.4,2.55q-2.9,4.15 -7.275,6.45T24.05,44Z" />
+</vector>

app/src/main/res/layout/trending_row.xml

@@ -23,8 +23,7 @@
         <ImageView
             android:id="@+id/thumbnail"
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:src="@mipmap/ic_launcher" />
+            android:layout_height="match_parent" />
 
         <androidx.cardview.widget.CardView
             android:layout_width="wrap_content"

app/src/main/res/values/strings.xml

@@ -242,4 +242,6 @@
     <string name="pure_theme">Pure theme</string>
     <string name="pure_theme_summary">Pure white/black theme</string>
     <string name="no_player_found">No external player found. Please make sure you have one installed.</string>
+    <string name="data_saver_mode">Data saver mode</string>
+    <string name="data_saver_mode_summary">Don\'t load thumbnails and other images to save data.</string>
 </resources>

app/src/main/res/xml/advanced_settings.xml

@@ -70,6 +70,12 @@
 
     <PreferenceCategory>
 
+        <SwitchPreferenceCompat
+            android:icon="@drawable/ic_data_saver"
+            android:summary="@string/data_saver_mode_summary"
+            app:key="data_saver_mode"
+            app:title="@string/data_saver_mode" />
+
         <Preference
             android:icon="@drawable/ic_reset"
             app:key="reset_settings"