update

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

@@ -515,8 +515,8 @@ public class HomeActivity extends BaseActivity implements CustomTitleView.Listen
             getHomeFragment().mBinding.progressLayout.showContent();
         } else if (mPageAdapter != null && getHomeFragment().mPresenter != null && getHomeFragment().mPresenter.isDelete()) {
             getHomeFragment().setHistoryDelete(false);
-        } else if (mBinding.recycler.getSelectedPosition() != 0) {
-            mBinding.recycler.scrollToPosition(0);
+        } else if (getHomeFragment().canBack()) {
+            getHomeFragment().goBack();
         } else if (!confirm) {
             setConfirm();
         } else {

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

@@ -274,4 +274,12 @@ public class HomeFragment extends BaseFragment implements VodPresenter.OnClickLi
         refreshFuncRow();
     }
 
+    public boolean canBack() {
+        return mBinding.recycler.getSelectedPosition() != 0;
+    }
+
+    public void goBack() {
+        mBinding.recycler.scrollToPosition(0);
+    }
+
 }