[leanback] fix bug

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

@@ -18,6 +18,7 @@ import androidx.recyclerview.widget.RecyclerView;
 import androidx.viewbinding.ViewBinding;
 import androidx.viewpager.widget.ViewPager;
 
+import com.fongmi.android.tv.App;
 import com.fongmi.android.tv.Constant;
 import com.fongmi.android.tv.R;
 import com.fongmi.android.tv.api.ApiConfig;
@@ -86,7 +87,6 @@ public class CollectActivity extends BaseActivity {
         mBinding.recycler.addOnChildViewHolderSelectedListener(new OnChildViewHolderSelectedListener() {
             @Override
             public void onChildViewHolderSelected(@NonNull RecyclerView parent, @Nullable RecyclerView.ViewHolder child, int position, int subposition) {
-                mBinding.pager.setCurrentItem(position);
                 onChildSelected(child);
             }
         });
@@ -140,8 +140,16 @@ public class CollectActivity extends BaseActivity {
         if (child == null) return;
         mOldView = child.itemView;
         mOldView.setActivated(true);
+        App.post(mRunnable, 200);
     }
 
+    private final Runnable mRunnable = new Runnable() {
+        @Override
+        public void run() {
+            mBinding.pager.setCurrentItem(mBinding.recycler.getSelectedPosition());
+        }
+    };
+
     private CollectFragment getFragment() {
         return (CollectFragment) mPageAdapter.instantiateItem(mBinding.pager, 0);
     }

app/src/leanback/java/com/fongmi/android/tv/ui/base/BaseFragment.java

@@ -14,6 +14,8 @@ public abstract class BaseFragment extends Fragment {
 
     protected abstract ViewBinding getBinding(@NonNull LayoutInflater inflater, @Nullable ViewGroup container);
 
+    private boolean init;
+
     @Nullable
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
@@ -23,12 +25,29 @@ public abstract class BaseFragment extends Fragment {
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         initView();
-        initEvent();
     }
 
     protected void initView() {
     }
 
-    protected void initEvent() {
+    protected void initData() {
+    }
+
+    private void onVisible() {
+        if (init) return;
+        initData();
+        init = true;
+    }
+
+    @Override
+    public void setUserVisibleHint(boolean isVisibleToUser) {
+        super.setUserVisibleHint(isVisibleToUser);
+        if (isVisibleToUser) if (isResumed()) onVisible();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (getUserVisibleHint()) onVisible();
     }
 }

app/src/leanback/java/com/fongmi/android/tv/ui/fragment/CollectFragment.java

@@ -52,15 +52,15 @@ public class CollectFragment extends BaseFragment implements VodPresenter.OnClic
 
     @Override
     protected void initView() {
-        setRecyclerView();
-    }
-
-    private void setRecyclerView() {
         CustomSelector selector = new CustomSelector();
         selector.addPresenter(ListRow.class, new CustomRowPresenter(16), VodPresenter.class);
         mBinding.recycler.setAdapter(new ItemBridgeAdapter(mAdapter = new ArrayObjectAdapter(selector)));
         mBinding.recycler.setHeader(getActivity().findViewById(R.id.result), getActivity().findViewById(R.id.recycler));
         mBinding.recycler.setVerticalSpacing(ResUtil.dp2px(16));
+    }
+
+    @Override
+    protected void initData() {
         addVideo(Vod.arrayFrom(json));
     }
 

app/src/leanback/java/com/fongmi/android/tv/ui/fragment/VodFragment.java

@@ -88,6 +88,10 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
         mBinding.progressLayout.showProgress();
         setRecyclerView();
         setViewModel();
+    }
+
+    @Override
+    protected void initData() {
         getVideo();
     }