Use lazyload

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

@@ -12,6 +12,9 @@ import androidx.viewbinding.ViewBinding;
 
 public abstract class BaseFragment extends Fragment {
 
+    private boolean isViewCreated;
+    private boolean isDataLoaded;
+
     protected abstract ViewBinding getBinding(@NonNull LayoutInflater inflater, @Nullable ViewGroup container);
 
     @Nullable
@@ -22,6 +25,14 @@ public abstract class BaseFragment extends Fragment {
 
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        isViewCreated = true;
+        if (getUserVisibleHint()) {
+            lazyLoad();
+            isDataLoaded = true;
+        }
+    }
+
+    private void lazyLoad() {
         initView();
         initEvent();
     }
@@ -31,4 +42,20 @@ public abstract class BaseFragment extends Fragment {
 
     protected void initEvent() {
     }
+
+    @Override
+    public void setUserVisibleHint(boolean isVisibleToUser) {
+        super.setUserVisibleHint(isVisibleToUser);
+        if (isVisibleToUser && isViewCreated && !isDataLoaded) {
+            lazyLoad();
+            isDataLoaded = true;
+        }
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        isViewCreated = false;
+        isDataLoaded = false;
+    }
 }