version:2.2

fix:
update:接口优化

app/src/main/java/com/uiuios/aios/base/BaseFragment.java

@@ -18,9 +18,13 @@ import com.trello.rxlifecycle4.android.RxLifecycleAndroid;
 import io.reactivex.rxjava3.core.Observable;
 import io.reactivex.rxjava3.subjects.BehaviorSubject;
 
-public class BaseFragment extends Fragment implements LifecycleProvider<FragmentEvent> {
+public abstract class BaseFragment extends Fragment implements LifecycleProvider<FragmentEvent> {
     public final BehaviorSubject<FragmentEvent> lifecycleSubject = BehaviorSubject.create();
 
+    protected boolean isViewInitiated;
+    protected boolean isVisibleToUser;
+    protected boolean isDataInitiated;
+
     @Override
     @NonNull
     @CheckResult
@@ -56,6 +60,35 @@ public class BaseFragment extends Fragment implements LifecycleProvider<Fragment
         lifecycleSubject.onNext(FragmentEvent.CREATE);
     }
 
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        isViewInitiated = true;
+        prepareFetchData();
+    }
+
+    @Override
+    public void setUserVisibleHint(boolean isVisibleToUser) {
+        super.setUserVisibleHint(isVisibleToUser);
+        this.isVisibleToUser = isVisibleToUser;
+        prepareFetchData();
+    }
+
+    public abstract void fetchData();
+
+    public boolean prepareFetchData() {
+        return prepareFetchData(false);
+    }
+
+    public boolean prepareFetchData(boolean forceUpdate) {
+        if (isVisibleToUser && isViewInitiated && (!isDataInitiated || forceUpdate)) {
+            fetchData();
+            isDataInitiated = true;
+            return true;
+        }
+        return false;
+    }
+
     @Override
     @CallSuper
     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {