TrackSelction Button Click snippet

track_selection_text.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                MappingTrackSelector.MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
                if (mappedTrackInfo != null) {
                    //CharSequence title = ((Button) view).getText();
                    //int rendererIndex = (int) v.getTag();
                    int rendererType = mappedTrackInfo.getRendererType(0);
                    boolean allowAdaptiveSelections =
                            rendererType == C.TRACK_TYPE_VIDEO
                                    || (rendererType == C.TRACK_TYPE_AUDIO
                                    && mappedTrackInfo.getTypeSupport(C.TRACK_TYPE_VIDEO)
                                    == MappingTrackSelector.MappedTrackInfo.RENDERER_SUPPORT_NO_TRACKS);
                    Pair<AlertDialog, TrackSelection> dialogPair = TrackSelection
                                    .getDialog(activity, "Video", trackSelector, 0, VideoPlayer.this,
                                            track_selection_text.getText().toString(), player.getVideoFormat());
                    dialogPair.second.setShowDisableOption(false);
                    dialogPair.second.setAllowAdaptiveSelections(allowAdaptiveSelections);
                    dialogPair.first.show();
                }
            }
        });

@langaliamayank

Each video that you play has to provide resolution list to show it to your user. You need to debug in MyTackSelection's updateViews() method and see for trackGroups.length. For you, it seems that the length is 0

Track length getting 1.

You'll have to open "exo_track_selection_view" XML and then change the package name (path name)to your custom TrackSelector.java
you'll find something like below in the XML

`

<X.Y.Z.TrackSelection
    android:id="@+id/exo_track_selection_init_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" />

`

you need to change X.Y.Z.Trackselection to com.maxtv.activity.tv.TrackSelection

So if i am doing this , i am not able to set my player

how to open exo_track_selection_dialog.xml and change to TrackSelection.
im getting this error
java.lang.ClassCastException: androidx.viewpager.widget.ViewPager cannot be cast to co.appmastery.worldbbtv.downloader.TrackSelection E/AndroidRuntime(30347): at co.appmastery.worldbbtv.downloader.TrackSelection.getDialog(TrackSelection.java:70) E/AndroidRuntime(30347): at co.appmastery.worldbbtv.PlayerActivity.test(PlayerActivity.java:909)

Any fix with the resoultion like youtube only 720 , 360 etc?