[leanback] fix focus

app/src/leanback/java/com/fongmi/android/tv/ui/activity/DetailActivity.java

@@ -106,6 +106,7 @@ public class DetailActivity extends BaseActivity implements CustomKeyDownVod.Lis
     private ArrayObjectAdapter mPartAdapter;
     private ActivityDetailBinding mBinding;
     private QualityAdapter mQualityAdapter;
+    private ArrayPresenter mArrayPresenter;
     private PartPresenter mPartPresenter;
     private CustomKeyDownVod mKeyDown;
     private ExecutorService mExecutor;
@@ -325,7 +326,7 @@ public class DetailActivity extends BaseActivity implements CustomKeyDownVod.Lis
         mBinding.quality.setAdapter(mQualityAdapter = new QualityAdapter(this::setQualityActivated));
         mBinding.array.setHorizontalSpacing(ResUtil.dp2px(8));
         mBinding.array.setRowHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
-        mBinding.array.setAdapter(new ItemBridgeAdapter(mArrayAdapter = new ArrayObjectAdapter(new ArrayPresenter(this))));
+        mBinding.array.setAdapter(new ItemBridgeAdapter(mArrayAdapter = new ArrayObjectAdapter(mArrayPresenter = new ArrayPresenter(this))));
         mBinding.part.setHorizontalSpacing(ResUtil.dp2px(8));
         mBinding.part.setRowHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
         mBinding.part.setAdapter(new ItemBridgeAdapter(mPartAdapter = new ArrayObjectAdapter(mPartPresenter = new PartPresenter(item -> initSearch(item, false)))));
@@ -486,7 +487,6 @@ public class DetailActivity extends BaseActivity implements CustomKeyDownVod.Lis
         mBinding.episode.setVisibility(items.isEmpty() ? View.GONE : View.VISIBLE);
         mEpisodeAdapter.setItems(items, null);
         setArray(items.size());
-        updateFocus();
     }
 
     private void seamless(Flag flag, boolean force) {
@@ -536,8 +536,12 @@ public class DetailActivity extends BaseActivity implements CustomKeyDownVod.Lis
     }
 
     private void updateFocus() {
+        mArrayPresenter.setNextFocusUp(isVisible(mBinding.quality) ? R.id.quality : R.id.episode);
+        mPartPresenter.setNextFocusUp(isVisible(mBinding.array) ? R.id.array : isVisible(mBinding.quality) ? R.id.quality : R.id.episode);
         mEpisodePresenter.setNextFocusDown(isVisible(mBinding.quality) ? R.id.quality : isVisible(mBinding.array) ? R.id.array : R.id.part);
-        mPartPresenter.setNextFocusUp(isVisible(mBinding.quality) ? R.id.quality : isVisible(mBinding.array) ? R.id.array : R.id.episode);
+        notifyItemChanged(mBinding.episode, mEpisodeAdapter);
+        notifyItemChanged(mBinding.array, mArrayAdapter);
+        notifyItemChanged(mBinding.part, mPartAdapter);
     }
 
     @Override

app/src/leanback/java/com/fongmi/android/tv/ui/presenter/ArrayPresenter.java

@@ -17,6 +17,7 @@ public class ArrayPresenter extends Presenter {
     private final String backward;
     private final String forward;
     private final String reverse;
+    private int nextFocus;
 
     public ArrayPresenter(OnClickListener listener) {
         this.mListener = listener;
@@ -32,6 +33,10 @@ public class ArrayPresenter extends Presenter {
         void onRevPlay(TextView view);
     }
 
+    public void setNextFocusUp(int nextFocus) {
+        this.nextFocus = nextFocus;
+    }
+
     @Override
     public Presenter.ViewHolder onCreateViewHolder(ViewGroup parent) {
         return new ViewHolder(AdapterArrayBinding.inflate(LayoutInflater.from(parent.getContext()), parent, false));
@@ -42,6 +47,7 @@ public class ArrayPresenter extends Presenter {
         ViewHolder holder = (ViewHolder) viewHolder;
         String text = object.toString();
         holder.binding.text.setText(text);
+        holder.binding.text.setNextFocusUpId(nextFocus);
         if (text.equals(reverse)) setOnClickListener(holder, view -> mListener.onRevSort());
         else if (text.equals(backward) || text.equals(forward)) setOnClickListener(holder, view -> mListener.onRevPlay(holder.binding.text));
         else setOnClickListener(holder, null);