完善加载更多帖子逻辑

app/src/main/java/com/community/pocket/data/main/forum/ForumMyRequest.java

@@ -31,7 +31,7 @@ public class ForumMyRequest {
      * 加载我的帖子
      */
     @HttpRequest("/forum/my")
-    public void loadForumMy(MutableLiveData<ForumMyResponse> liveData, int page, String title) {
+    public void loadForumMy(MutableLiveData<ForumMyResponse> liveData, Long page, String title) {
         HttpUtil.getRequest(HttpUtil.Method.GET,
                 new SimpleHttpParse<ForumMyResponse>(liveData).getInterface(ForumMyResponse.class),
                 new FormBody.Builder()

app/src/main/java/com/community/pocket/data/main/forum/ForumNewRequest.java

@@ -28,7 +28,7 @@ public class ForumNewRequest {
     }
 
     @HttpRequest("/forum/new")
-    public void loadForumNew(MutableLiveData<ForumNewResponse> liveData, int page, String title) {
+    public void loadForumNew(MutableLiveData<ForumNewResponse> liveData, Long page, String title) {
         HttpUtil.getRequest(HttpUtil.Method.GET,
                 new SimpleHttpParse<ForumNewResponse>(liveData).getInterface(ForumNewResponse.class),
                 new FormBody.Builder()

app/src/main/java/com/community/pocket/ui/BaseFragment.java

@@ -27,8 +27,8 @@ public abstract class BaseFragment extends Fragment {
     }
 
     //获取父级Fragment
-    protected <T extends Fragment> T getParentFragment(int level) {
-        return getParentFragment(level, null);
+    protected <T extends Fragment> T getParentFragment(Class<T> tClass) {
+        return getParentFragment(tClass, null);
     }
 
     //校验token失败跳转到登陆页
@@ -38,17 +38,18 @@ public abstract class BaseFragment extends Fragment {
 
     //获取父级Fragment
     @SuppressWarnings("unchecked")
-    private <T extends Fragment> T getParentFragment(int level, Fragment fragment) {
-        if (level-- > 0) {
+    private <T extends Fragment> T getParentFragment(Class<T> tClass, Fragment fragment) {
             if (fragment == null) {
                 fragment = getParentFragment();
             } else {
                 fragment = fragment.getParentFragment();
             }
-            return getParentFragment(level, fragment);
+        if (fragment != null) {
+            return fragment.getClass().isAssignableFrom(tClass) ? (T) fragment : getParentFragment(tClass, fragment);
         } else {
-            return (T) fragment;
+            throw new RuntimeException("not fround parent Fragment for " + tClass);
         }
+
     }
 
     //格式化日期

app/src/main/java/com/community/pocket/ui/main/ui/forum/FormLoad.java

@@ -0,0 +1,5 @@
+package com.community.pocket.ui.main.ui.forum;
+
+public interface FormLoad {
+    void loadForumNew(Long page, String title);
+}

app/src/main/java/com/community/pocket/ui/main/ui/forum/ForumPost.java

@@ -1,18 +1,23 @@
 package com.community.pocket.ui.main.ui.forum;
 
 import android.content.Intent;
+import android.os.Build;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.LinearLayout;
 import android.widget.TextView;
-import android.widget.Toast;
+
+import androidx.annotation.RequiresApi;
+import androidx.appcompat.widget.SearchView;
+import androidx.core.widget.NestedScrollView;
 
 import com.community.pocket.R;
 import com.community.pocket.data.model.Forum;
 import com.community.pocket.data.model.Page;
 import com.community.pocket.ui.BaseFragment;
 import com.community.pocket.ui.main.ui.forum.data.ForumDataActivity;
+import com.community.pocket.ui.main.ui.forum.main.ForumFragment;
 import com.community.pocket.util.Param;
 
 import org.xutils.view.annotation.ViewInject;
@@ -33,10 +38,9 @@ public abstract class ForumPost extends BaseFragment {
      */
     protected void loadPost(Page<Forum> forumList) {
 
-        if (forumList.isEmpty()) {
-            Toast.makeText(getContext(), R.string.no_more_forum, Toast.LENGTH_LONG).show();
-        } else {
-            layout.removeViews(1, layout.getChildCount() - 1);
+        if (forumList.getCurrentPage() == 1) {
+            layout.removeAllViews();
+        }
             for (int i = 0; i < forumList.getList().size(); i++) {
                 final Forum forum = forumList.getList().get(i);
 
@@ -74,19 +78,36 @@ public abstract class ForumPost extends BaseFragment {
 
                 //打开帖子
                 Button button = childView.findViewById(R.id.showAll);
-                button.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
+                button.setOnClickListener(v -> {
                     Intent intent = new Intent(getContext(), ForumDataActivity.class);
                     intent.putExtra(Param.forumId.name(), forum.getId());
                     startActivityForResult(intent, 1);
-//                        startActivity(intent);
-                    }
                 });
 
                 layout.addView(childView);
+
             }
     }
+
+    protected abstract FormLoad getViewModel();
+
+    protected abstract Long getCurrentPage();
+
+    protected abstract SearchView searchView();
+
+    protected void load(Long page) {
+        getViewModel().loadForumNew(page, searchView().getQuery().toString());
     }
 
+    //滚动加载更多帖子
+    @RequiresApi(api = Build.VERSION_CODES.M)
+    protected void loadMore() {
+        //滚动加载更多帖子
+        ForumFragment forumFragment = getParentFragment(ForumFragment.class);
+        forumFragment.getScrollView().setOnScrollChangeListener((NestedScrollView.OnScrollChangeListener) (v, scrollX, scrollY, oldScrollX, oldScrollY) -> {
+            if (scrollY == (v.getChildAt(0).getMeasuredHeight() - v.getMeasuredHeight())) {
+                load(getCurrentPage() + 1);
+            }
+        });
+    }
 }

app/src/main/java/com/community/pocket/ui/main/ui/forum/main/ForumFragment.java

@@ -3,6 +3,7 @@ package com.community.pocket.ui.main.ui.forum.main;
 import android.annotation.SuppressLint;
 import android.os.Build;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.MotionEvent;
 import android.view.View;
 import android.widget.Button;
@@ -12,6 +13,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 import androidx.core.widget.NestedScrollView;
+import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModelProvider;
 
 import com.community.pocket.R;
@@ -26,6 +28,7 @@ import org.xutils.view.annotation.Event;
 import org.xutils.view.annotation.ViewInject;
 
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 
 /**
  * 论坛框架
@@ -37,7 +40,7 @@ public class ForumFragment extends MainFragment {
     private MyBanner banner;
 
     @ViewInject(R.id.scroll_body)
-    private NestedScrollView nestedScrollView;
+    private NestedScrollView scrollView;
 
     @ViewInject(R.id.forum_new)
     private Button newButton;
@@ -47,6 +50,9 @@ public class ForumFragment extends MainFragment {
     @ViewInject(R.id.notice_next)
     private ImageView noticeNext;
 
+    //触发自动滚动
+    private MutableLiveData<Boolean> autoScroll = new MutableLiveData<>();
+
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
@@ -69,6 +75,8 @@ public class ForumFragment extends MainFragment {
                 initNotice(forumNoticeResponse.getNoticeList());
             }
         });
+
+        resumeAutoScroll();
     }
 
     //初始化公告箭头事件
@@ -79,6 +87,10 @@ public class ForumFragment extends MainFragment {
         initClickListener(noticeNext);
     }
 
+    public NestedScrollView getScrollView() {
+        return scrollView;
+    }
+
     //箭头随焦点改变透明度
     @SuppressLint("ClickableViewAccessibility")
     private void initFocusListener(ImageView imageView) {
@@ -103,6 +115,24 @@ public class ForumFragment extends MainFragment {
             } else {
                 banner.setCurrentItem(banner.getCurrentItem() < banner.getItemCount() - 1 ? banner.getCurrentItem() + 1 : 0);
             }
+            new Thread(() -> {
+                try {
+                    TimeUnit.SECONDS.sleep(3);
+                    autoScroll.postValue(true);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                    Log.e(ForumFragment.class.getName(), e.toString());
+                }
+            }).start();
+        });
+    }
+
+    //恢复自动滚动
+    private void resumeAutoScroll() {
+        this.autoScroll.observe(getViewLifecycleOwner(), aBoolean -> {
+            if (aBoolean) {
+                banner.start();
+            }
         });
     }
 
@@ -127,10 +157,11 @@ public class ForumFragment extends MainFragment {
     }
 
     private void scrollTop() {
-        nestedScrollView.fling(0);
-        nestedScrollView.smoothScrollTo(0, 0);
+        scrollView.fling(0);
+        scrollView.smoothScrollTo(0, 0);
     }
 
+
     //跳转热榜界面
     @RequiresApi(api = Build.VERSION_CODES.KITKAT)
     @Event(value = R.id.forum_hot)

app/src/main/java/com/community/pocket/ui/main/ui/forum/my/ForumMyFragment.java

@@ -7,10 +7,10 @@ import android.view.View;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.SearchView;
-import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
 import com.community.pocket.R;
+import com.community.pocket.ui.main.ui.forum.FormLoad;
 import com.community.pocket.ui.main.ui.forum.ForumPost;
 import com.community.pocket.ui.main.ui.share.Response;
 
@@ -28,19 +28,21 @@ public class ForumMyFragment extends ForumPost {
     @ViewInject(R.id.search)
     private SearchView searchView;
 
+    private Long currentPage = 1L;
+
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
 
         viewModel = new ViewModelProvider(this, new ViewModelProvider.NewInstanceFactory()).get(ForumMyViewModel.class);
 
-        viewModel.loadForumMy(1, "");
+        load(1L);
 
         searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
             @Override
             public boolean onQueryTextSubmit(String query) {
                 if (!query.isEmpty()) {
-                    viewModel.loadForumMy(1, searchView.getQuery().toString());
+                    load(1L);
                     return true;
                 } else {
                     return false;
@@ -55,9 +57,7 @@ public class ForumMyFragment extends ForumPost {
         });
 
         //监听我的帖子加载状态
-        viewModel.getForumMyResponse().observe(getViewLifecycleOwner(), new Observer<ForumMyResponse>() {
-            @Override
-            public void onChanged(ForumMyResponse forumMyResponse) {
+        viewModel.getForumMyResponse().observe(getViewLifecycleOwner(), forumMyResponse -> {
             if (forumMyResponse == null) {
                 return;
             }
@@ -65,9 +65,9 @@ public class ForumMyFragment extends ForumPost {
             forumMyResponse.toast(getContext());
 
             if (forumMyResponse.getResult() == Response.Result.OK) {
+                this.currentPage = forumMyResponse.getForumList().getCurrentPage();
                 loadPost(forumMyResponse.getForumList());
             }
-            }
         });
     }
 
@@ -81,10 +81,25 @@ public class ForumMyFragment extends ForumPost {
         return View.VISIBLE;
     }
 
+    @Override
+    protected FormLoad getViewModel() {
+        return viewModel;
+    }
+
+    @Override
+    protected Long getCurrentPage() {
+        return currentPage;
+    }
+
+    @Override
+    protected SearchView searchView() {
+        return searchView;
+    }
+
     @Override
     public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
 
-        viewModel.loadForumMy(1, "");
+        load(1L);
     }
 }

app/src/main/java/com/community/pocket/ui/main/ui/forum/my/ForumMyResponse.java

@@ -23,6 +23,8 @@ public class ForumMyResponse extends Response<ForumMyResponse.Msg> {
 
     enum Msg implements CustomMessage {
         ok(R.string.load_forum_my_ok),
+        ok_empty(R.string.no_more_forum),
+        ok_more(R.string.load_more_forum_ok),
         fail(R.string.load_forum_my_fail),
         token(R.string.invalid_token);
 

app/src/main/java/com/community/pocket/ui/main/ui/forum/my/ForumMyViewModel.java

@@ -3,10 +3,11 @@ package com.community.pocket.ui.main.ui.forum.my;
 import androidx.lifecycle.MutableLiveData;
 
 import com.community.pocket.data.main.forum.ForumMyRequest;
+import com.community.pocket.ui.main.ui.forum.FormLoad;
 import com.community.pocket.ui.main.ui.share.BaseViewModel;
 
 //我的帖子UI数据管理
-public class ForumMyViewModel extends BaseViewModel<ForumMyRequest> {
+public class ForumMyViewModel extends BaseViewModel<ForumMyRequest> implements FormLoad {
 
     //我的帖子请求状态
     private MutableLiveData<ForumMyResponse> forumMyResponse = new MutableLiveData<>();
@@ -15,12 +16,14 @@ public class ForumMyViewModel extends BaseViewModel<ForumMyRequest> {
         return forumMyResponse;
     }
 
-    void loadForumMy(int page, String title) {
-        getRequest().loadForumMy(forumMyResponse, page, title);
-    }
 
     @Override
     protected ForumMyRequest getRequest() {
         return ForumMyRequest.getInstance();
     }
+
+    @Override
+    public void loadForumNew(Long page, String title) {
+        getRequest().loadForumMy(forumMyResponse, page, title);
+    }
 }

app/src/main/java/com/community/pocket/ui/main/ui/forum/news/ForumNewFragment.java

@@ -1,16 +1,17 @@
 package com.community.pocket.ui.main.ui.forum.news;
 
 import android.content.Intent;
+import android.os.Build;
 import android.os.Bundle;
 import android.view.View;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.SearchView;
-import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
 import com.community.pocket.R;
+import com.community.pocket.ui.main.ui.forum.FormLoad;
 import com.community.pocket.ui.main.ui.forum.ForumPost;
 import com.community.pocket.ui.main.ui.share.Response;
 
@@ -28,19 +29,21 @@ public class ForumNewFragment extends ForumPost {
     @ViewInject(R.id.search)
     private SearchView searchView;
 
+    private Long currentPage = 1L;
+
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
 
         viewModel = new ViewModelProvider(this, new ViewModelProvider.NewInstanceFactory()).get(ForumNewViewModel.class);
 
-        viewModel.loadForumNew(1, searchView.getQuery().toString());
+        load(1L);
 
         searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
             @Override
             public boolean onQueryTextSubmit(String query) {
                 if (!query.isEmpty()) {
-                    viewModel.loadForumNew(1, searchView.getQuery().toString());
+                    load(1L);
                     return true;
                 } else {
                     return false;
@@ -54,10 +57,9 @@ public class ForumNewFragment extends ForumPost {
             }
         });
 
+
         //监听最新帖子请求状态
-        viewModel.getForumNewResponse().observe(getViewLifecycleOwner(), new Observer<ForumNewResponse>() {
-            @Override
-            public void onChanged(ForumNewResponse forumNewResponse) {
+        viewModel.getForumNewResponse().observe(getViewLifecycleOwner(), forumNewResponse -> {
             if (forumNewResponse == null) {
                 return;
             }
@@ -65,10 +67,15 @@ public class ForumNewFragment extends ForumPost {
             forumNewResponse.toast(getContext());
 
             if (forumNewResponse.getResult() == Response.Result.OK) {
+                this.currentPage = forumNewResponse.getForumList().getCurrentPage();
                 loadPost(forumNewResponse.getForumList());
             }
-            }
         });
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            loadMore();
+        }
+
     }
 
     @Override
@@ -81,10 +88,24 @@ public class ForumNewFragment extends ForumPost {
         return View.GONE;
     }
 
+    @Override
+    protected FormLoad getViewModel() {
+        return viewModel;
+    }
+
+    @Override
+    protected Long getCurrentPage() {
+        return currentPage;
+    }
+
+    @Override
+    protected SearchView searchView() {
+        return searchView;
+    }
+
     @Override
     public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
-
-        viewModel.loadForumNew(1, searchView.getQuery().toString());
+        load(1L);
     }
 }

app/src/main/java/com/community/pocket/ui/main/ui/forum/news/ForumNewResponse.java

@@ -18,6 +18,8 @@ public class ForumNewResponse extends Response<ForumNewResponse.Msg> {
 
     enum Msg implements CustomMessage {
         ok(R.string.load_forum_new_ok),
+        ok_empty(R.string.no_more_forum),
+        ok_more(R.string.load_more_forum_ok),
         fail(R.string.load_forum_new_fail);
 
 

app/src/main/java/com/community/pocket/ui/main/ui/forum/news/ForumNewViewModel.java

@@ -3,12 +3,13 @@ package com.community.pocket.ui.main.ui.forum.news;
 import androidx.lifecycle.MutableLiveData;
 
 import com.community.pocket.data.main.forum.ForumNewRequest;
+import com.community.pocket.ui.main.ui.forum.FormLoad;
 import com.community.pocket.ui.main.ui.share.BaseViewModel;
 
 /**
  * 最新帖子
  */
-public class ForumNewViewModel extends BaseViewModel<ForumNewRequest> {
+public class ForumNewViewModel extends BaseViewModel<ForumNewRequest> implements FormLoad {
 
     //最新帖子请求状态
     private MutableLiveData<ForumNewResponse> forumNewResponse = new MutableLiveData<>();
@@ -17,7 +18,8 @@ public class ForumNewViewModel extends BaseViewModel<ForumNewRequest> {
         return forumNewResponse;
     }
 
-    void loadForumNew(int page, String title) {
+    @Override
+    public void loadForumNew(Long page, String title) {
         getRequest().loadForumNew(forumNewResponse, page, title);
     }
 

app/src/main/java/com/community/pocket/ui/main/ui/forum/post/ForumPostContent.java

@@ -10,7 +10,6 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 import androidx.constraintlayout.widget.ConstraintLayout;
-import androidx.lifecycle.Observer;
 
 import com.community.pocket.R;
 import com.community.pocket.ui.BaseFragment;
@@ -58,7 +57,7 @@ abstract class ForumPostContent extends BaseFragment {
     //初始化父级布局组件
     @RequiresApi(api = Build.VERSION_CODES.KITKAT)
     private void initParentView() {
-        ForumPostFragment forumPostFragment = getParentFragment(2);
+        ForumPostFragment forumPostFragment = getParentFragment(ForumPostFragment.class);
         View parentView = Objects.requireNonNull(Objects.requireNonNull(forumPostFragment).getView());
         postTitle = parentView.findViewById(R.id.post_title);
         postButton = parentView.findViewById(R.id.post_button);
@@ -67,21 +66,17 @@ abstract class ForumPostContent extends BaseFragment {
 
     //监听发帖状态
     void sendPost(ForumPostViewModel viewModel) {
-        viewModel.getForumPostResponse().observe(getViewLifecycleOwner(), new Observer<ForumPostResponse>() {
-            @RequiresApi(api = Build.VERSION_CODES.KITKAT)
-            @Override
-            public void onChanged(ForumPostResponse forumPostResponse) {
+        viewModel.getForumPostResponse().observe(getViewLifecycleOwner(), forumPostResponse -> {
             if (forumPostResponse == null) {
                 return;
             }
 
             forumPostResponse.toast(getContext());
             if (forumPostResponse.getResult() == Response.Result.OK) {
-                    ForumFragment forumFragment = getParentFragment(4);
+                ForumFragment forumFragment = getParentFragment(ForumFragment.class);
                 Button button = Objects.requireNonNull(forumFragment.getView()).findViewById(R.id.forum_new);
                 forumFragment._new(button);
             }
-            }
         });
     }
 }

app/src/main/java/com/community/pocket/ui/main/ui/visitor/appointment/VisitorAppointmentFragment.java

@@ -19,7 +19,6 @@ import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
-import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
 import com.community.pocket.R;
@@ -99,9 +98,7 @@ public class VisitorAppointmentFragment extends BaseFragment {
         myAutoCompleteTextView = new MyAutoCompleteTextView(appointment, appointmentViewModel);
 
         //监听访客预约表单校验状态
-        appointmentViewModel.getVisitorFormState().observe(getViewLifecycleOwner(), new Observer<VisitorFormState>() {
-            @Override
-            public void onChanged(VisitorFormState visitorFormState) {
+        appointmentViewModel.getVisitorFormState().observe(getViewLifecycleOwner(), visitorFormState -> {
             if (visitorFormState == null) {
                 return;
             }
@@ -121,13 +118,10 @@ public class VisitorAppointmentFragment extends BaseFragment {
             if (visitorFormState.getNotesError() != null) {
                 notes.setError(getString(visitorFormState.getNotesError()));
             }
-            }
         });
 
         //监听预约请求结果
-        appointmentViewModel.getVisitorResponse().observe(getViewLifecycleOwner(), new Observer<VisitorResponse>() {
-            @Override
-            public void onChanged(VisitorResponse visitorResponse) {
+        appointmentViewModel.getVisitorResponse().observe(getViewLifecycleOwner(), visitorResponse -> {
             if (visitorResponse == null) {
                 return;
             }
@@ -135,17 +129,14 @@ public class VisitorAppointmentFragment extends BaseFragment {
             visitorResponse.toast(getContext());
 
             if (visitorResponse.getResult() == Response.Result.OK) {
-                    VisitorFragment visitorFragment = getParentFragment(2);
+                VisitorFragment visitorFragment = getParentFragment(VisitorFragment.class);
                 Button button = Objects.requireNonNull(visitorFragment.getView()).findViewById(R.id.visitor_reservation);
                 visitorFragment.reservation(button);
             }
-            }
         });
 
         //检索预约人请求结果
-        appointmentViewModel.getSearchPeopleReq().observe(getViewLifecycleOwner(), new Observer<VisitorPeopleResponse>() {
-            @Override
-            public void onChanged(VisitorPeopleResponse visitorResponse) {
+        appointmentViewModel.getSearchPeopleReq().observe(getViewLifecycleOwner(), visitorResponse -> {
             if (visitorResponse == null) {
                 return;
             }
@@ -157,7 +148,6 @@ public class VisitorAppointmentFragment extends BaseFragment {
                     initSearch(visitorResponse.getVisitorPeopleList());
                 }
             }
-            }
         });
 
         appointment.addTextChangedListener(new MyTextChange() {

app/src/main/res/layout/main/layout/forum/layout/forum.xml

@@ -67,7 +67,6 @@
                 android:name="androidx.navigation.fragment.NavHostFragment"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_marginBottom="@dimen/size_100"
                 android:background="@color/colorAccent"
                 app:defaultNavHost="true"
                 app:navGraph="@navigation/forum_navigation" />

app/src/main/res/layout/main/layout/forum/layout/forum_hot_fragment.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
@@ -7,15 +7,13 @@
     tools:context=".ui.main.ui.forum.hot.ForumHotFragment">
 
 
-    <androidx.core.widget.NestedScrollView
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        tools:ignore="UselessParent">
-
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-            android:orientation="vertical">
+        android:orientation="vertical"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:ignore="UselessParent">
 
         <androidx.constraintlayout.widget.ConstraintLayout
             android:id="@+id/active_user"
@@ -80,5 +78,5 @@
 
         </androidx.constraintlayout.widget.ConstraintLayout>
     </LinearLayout>
-    </androidx.core.widget.NestedScrollView>
-</FrameLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/main/layout/forum/layout/forum_my_fragment.xml

@@ -1,25 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".ui.main.ui.forum.my.ForumMyFragment">
 
-    <androidx.core.widget.NestedScrollView
+    <androidx.appcompat.widget.SearchView
+        android:id="@+id/search"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        tools:ignore="UselessParent">
+        android:layout_height="wrap_content"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
     <LinearLayout
         android:id="@+id/post_layout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-            android:orientation="vertical">
-
-            <androidx.appcompat.widget.SearchView
-                android:id="@+id/search"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent" />
-        </LinearLayout>
-    </androidx.core.widget.NestedScrollView>
-</FrameLayout>
+        android:orientation="vertical"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/search" />
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/main/layout/forum/layout/forum_new_fragment.xml

@@ -1,25 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".ui.main.ui.forum.news.ForumNewFragment">
 
-    <androidx.core.widget.NestedScrollView
+    <androidx.appcompat.widget.SearchView
+        android:id="@+id/search"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        tools:ignore="UselessParent">
+        android:layout_height="wrap_content"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
     <LinearLayout
         android:id="@+id/post_layout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-            android:orientation="vertical">
-
-            <androidx.appcompat.widget.SearchView
-                android:id="@+id/search"
-                android:layout_width="match_parent"
-                android:layout_height="37dp" />
-        </LinearLayout>
-    </androidx.core.widget.NestedScrollView>
-</FrameLayout>
+        android:orientation="vertical"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/search" />
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/main/layout/forum/layout/forum_post_fragment.xml

@@ -1,20 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".ui.main.ui.forum.post.ForumPostFragment">
 
-    <androidx.core.widget.NestedScrollView
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        tools:ignore="UselessParent">
-
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-            android:orientation="vertical">
+        android:orientation="vertical"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
 
         <EditText
             android:id="@+id/post_title"
@@ -52,6 +49,5 @@
             android:text="@string/forum_post" />
 
     </LinearLayout>
-    </androidx.core.widget.NestedScrollView>
 
-</FrameLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/main/layout/visitor/layout/visitor_appointment_fragment.xml

@@ -1,25 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".ui.main.ui.visitor.appointment.VisitorAppointmentFragment">
 
-    <androidx.core.widget.NestedScrollView
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:fillViewport="true">
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="vertical">
-
-            <androidx.constraintlayout.widget.ConstraintLayout
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_gravity="center_vertical">
 
     <AutoCompleteTextView
         android:id="@+id/appointment"
@@ -146,8 +132,5 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/notes" />
-            </androidx.constraintlayout.widget.ConstraintLayout>
-        </LinearLayout>
-    </androidx.core.widget.NestedScrollView>
 
-</FrameLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values-en-rUS/strings.xml

@@ -227,4 +227,5 @@
     <string name="server_address_error_2">服务端地址的冒号句号应该是半角符号，\":\"、\".\"，而不是全角符号\"：\"、\"。\"</string>
     <string name="server_address_error_3">服务端地址应该以http开头</string>
     <string name="server_address_error_4">恭喜你发现了新的错误，请联系管理员解决问题</string>
+    <string name="load_more_forum_ok">load more forum OK</string>
 </resources>

app/src/main/res/values-zh-rCN/strings.xml

@@ -227,4 +227,5 @@
     <string name="server_address_error_2">服务端地址的冒号句号应该是半角符号，\":\"、\".\"，而不是全角符号\"：\"、\"。\"</string>
     <string name="server_address_error_3">服务端地址应该以http开头</string>
     <string name="server_address_error_4">恭喜你发现了新的错误，请联系管理员解决问题</string>
+    <string name="load_more_forum_ok">成功加载更多帖子</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -228,6 +228,7 @@
     <string name="server_address_error_2">服务端地址的冒号句号应该是半角符号，\":\"、\".\"，而不是全角符号\"：\"、\"。\"</string>
     <string name="server_address_error_3">服务端地址应该以http开头</string>
     <string name="server_address_error_4">恭喜你发现了新的错误，请联系管理员解决问题</string>
+    <string name="load_more_forum_ok">load more forum OK</string>
     <!-- Strings used for fragments for navigation -->
 
     <!-- Strings used for fragments for navigation -->