Merge pull request #7704 from Stypox/fix-stream-menu-crash

Fix crash when long-pressing stream while player is starting

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListFragment.java

@@ -352,7 +352,7 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
         }
         final List<StreamDialogEntry> entries = new ArrayList<>();
 
-        if (PlayerHolder.getInstance().isPlayerOpen()) {
+        if (PlayerHolder.getInstance().isPlayQueueReady()) {
             entries.add(StreamDialogEntry.enqueue);
 
             if (PlayerHolder.getInstance().getQueueSize() > 1) {

app/src/main/java/org/schabi/newpipe/fragments/list/playlist/PlaylistFragment.java

@@ -149,7 +149,7 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
 
         final ArrayList<StreamDialogEntry> entries = new ArrayList<>();
 
-        if (PlayerHolder.getInstance().isPlayerOpen()) {
+        if (PlayerHolder.getInstance().isPlayQueueReady()) {
             entries.add(StreamDialogEntry.enqueue);
 
             if (PlayerHolder.getInstance().getQueueSize() > 1) {

app/src/main/java/org/schabi/newpipe/local/feed/FeedFragment.kt

@@ -362,7 +362,7 @@ class FeedFragment : BaseStateFragment<FeedState>() {
         if (context == null || context.resources == null || activity == null) return
 
         val entries = ArrayList<StreamDialogEntry>()
-        if (PlayerHolder.getInstance().isPlayerOpen) {
+        if (PlayerHolder.getInstance().isPlayQueueReady) {
             entries.add(StreamDialogEntry.enqueue)
 
             if (PlayerHolder.getInstance().queueSize > 1) {

app/src/main/java/org/schabi/newpipe/local/history/StatisticsPlaylistFragment.java

@@ -338,7 +338,7 @@ public class StatisticsPlaylistFragment
 
         final ArrayList<StreamDialogEntry> entries = new ArrayList<>();
 
-        if (PlayerHolder.getInstance().isPlayerOpen()) {
+        if (PlayerHolder.getInstance().isPlayQueueReady()) {
             entries.add(StreamDialogEntry.enqueue);
 
             if (PlayerHolder.getInstance().getQueueSize() > 1) {

app/src/main/java/org/schabi/newpipe/local/playlist/LocalPlaylistFragment.java

@@ -753,7 +753,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
 
         final ArrayList<StreamDialogEntry> entries = new ArrayList<>();
 
-        if (PlayerHolder.getInstance().isPlayerOpen()) {
+        if (PlayerHolder.getInstance().isPlayQueueReady()) {
             entries.add(StreamDialogEntry.enqueue);
 
             if (PlayerHolder.getInstance().getQueueSize() > 1) {

app/src/main/java/org/schabi/newpipe/player/Player.java

@@ -260,7 +260,8 @@ public final class Player implements
     // Playback
     //////////////////////////////////////////////////////////////////////////*/
 
-    private PlayQueue playQueue;
+    // play queue might be null e.g. while player is starting
+    @Nullable private PlayQueue playQueue;
     private PlayQueueAdapter playQueueAdapter;
     private StreamSegmentAdapter segmentAdapter;
 
@@ -4226,6 +4227,7 @@ public final class Player implements
     }
 
 
+    @Nullable
     public PlayQueue getPlayQueue() {
         return playQueue;
     }

app/src/main/java/org/schabi/newpipe/player/helper/PlayerHolder.java

@@ -38,12 +38,12 @@ public final class PlayerHolder {
     private static final boolean DEBUG = MainActivity.DEBUG;
     private static final String TAG = PlayerHolder.class.getSimpleName();
 
-    private PlayerServiceExtendedEventListener listener;
+    @Nullable private PlayerServiceExtendedEventListener listener;
 
     private final PlayerServiceConnection serviceConnection = new PlayerServiceConnection();
     private boolean bound;
-    private MainPlayer playerService;
+    @Nullable private MainPlayer playerService;
-    private Player player;
+    @Nullable private Player player;
 
     /**
      * Returns the current {@link MainPlayer.PlayerType} of the {@link MainPlayer} service,
@@ -70,12 +70,25 @@ public final class PlayerHolder {
         return player != null;
     }
 
+    /**
+     * Use this method to only allow the user to manipulate the play queue (e.g. by enqueueing via
+     * the stream long press menu) when there actually is a play queue to manipulate.
+     * @return true only if the player is open and its play queue is ready (i.e. it is not null)
+     */
+    public boolean isPlayQueueReady() {
+        return player != null && player.getPlayQueue() != null;
+    }
+
     public boolean isBound() {
         return bound;
     }
 
     public int getQueueSize() {
-        return isPlayerOpen() ? player.getPlayQueue().size() : 0;
+        if (player == null || player.getPlayQueue() == null) {
+            // player play queue might be null e.g. while player is starting
+            return 0;
+        }
+        return player.getPlayQueue().size();
     }
 
     public void setListener(@Nullable final PlayerServiceExtendedEventListener newListener) {