add 增加自动加载更多demo

Author: youlookwhat

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "me.jingbin.byrecyclerview"
         minSdkVersion 16
         targetSdkVersion 29
-        versionCode 9
-        versionName "1.2.0"
+        versionCode 10
+        versionName "1.3.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
     }

app/src/main/AndroidManifest.xml

@@ -45,6 +45,7 @@
         <activity android:name=".activity.StickyRvActivity" />
         <activity android:name=".activity.HorizontalGridDividerActivity" />
         <activity android:name=".activity.ItemPayloadActivity" />
+        <activity android:name=".activity.LoadMoreActivity" />
     </application>
 
 </manifest>

app/src/main/java/me/jingbin/byrecyclerview/MainActivity.java

@@ -20,6 +20,7 @@
 import me.jingbin.byrecyclerview.activity.HeaderFooterActivity;
 import me.jingbin.byrecyclerview.activity.ItemClickActivity;
 import me.jingbin.byrecyclerview.activity.ItemPayloadActivity;
+import me.jingbin.byrecyclerview.activity.LoadMoreActivity;
 import me.jingbin.byrecyclerview.activity.SecondTypeActivity;
 import me.jingbin.byrecyclerview.activity.StateViewActivity;
 import me.jingbin.byrecyclerview.activity.StickyItemActivity;
@@ -39,6 +40,7 @@ public class MainActivity extends AppCompatActivity {
 
     private final List<String> list = Arrays.asList(
             "下拉刷新、加载更多",
+            "自动加载更多、松手加载更多",
             "Add HeaderView/FooterView",
             "设置StateView",
             "item 点击/长按",
@@ -78,37 +80,40 @@ public void onSingleClick(View v, int position) {
                     case 0:// 下拉刷新、加载更多
                         SecondTypeActivity.start(v.getContext(), "refreshLoadMore");
                         break;
-                    case 1:// Add HeaderView/FooterView
+                    case 1:// 自动加载更多、松手加载更多
+                        startActivity(new Intent(MainActivity.this, LoadMoreActivity.class));
+                        break;
+                    case 2:// Add HeaderView/FooterView
                         startActivity(new Intent(MainActivity.this, HeaderFooterActivity.class));
                         break;
-                    case 2:// 设置StateView
+                    case 3:// 设置StateView
                         startActivity(new Intent(MainActivity.this, StateViewActivity.class));
                         break;
-                    case 3:// item 点击/长按
+                    case 4:// item 点击/长按
                         startActivity(new Intent(MainActivity.this, ItemClickActivity.class));
                         break;
-                    case 4:// item 局部刷新
+                    case 5:// item 局部刷新
                         startActivity(new Intent(MainActivity.this, ItemPayloadActivity.class));
                         break;
-                    case 5:// adapter (多类型、databinding、ListView)
+                    case 6:// adapter (多类型、databinding、ListView)
                         SecondTypeActivity.start(v.getContext(), "adapter");
                         break;
-                    case 6:// 万能分割线
+                    case 7:// 万能分割线
                         SecondTypeActivity.start(v.getContext(), "Divider");
                         break;
-                    case 7:// item 悬浮置顶
+                    case 8:// item 悬浮置顶
                         startActivity(new Intent(MainActivity.this, StickyItemActivity.class));
                         break;
-                    case 8:// Skeleton 骨架图
+                    case 9:// Skeleton 骨架图
                         SecondTypeActivity.start(v.getContext(), "Skeleton");
                         break;
-                    case 9:// CoordinatorLayout + RecyclerView 使用示例
+                    case 10:// CoordinatorLayout + RecyclerView 使用示例
                         startActivity(new Intent(MainActivity.this, AppBarLayoutActivity.class));
                         break;
-                    case 10:// FlexboxLayoutManager
+                    case 11:// FlexboxLayoutManager
                         startActivity(new Intent(MainActivity.this, FlexBoxActivity.class));
                         break;
-                    case 11:// RecyclerView 嵌套滑动置顶
+                    case 12:// RecyclerView 嵌套滑动置顶
                         startActivity(new Intent(MainActivity.this, StickyRvActivity.class));
                         break;
                     default:

app/src/main/java/me/jingbin/byrecyclerview/activity/LoadMoreActivity.java

@@ -0,0 +1,50 @@
+package me.jingbin.byrecyclerview.activity;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import java.util.ArrayList;
+
+import me.jingbin.byrecyclerview.R;
+import me.jingbin.byrecyclerview.app.BaseActivity;
+import me.jingbin.byrecyclerview.databinding.ActivityRefreshBinding;
+import me.jingbin.byrecyclerview.fragment.RefreshFragment;
+import me.jingbin.byrecyclerview.fragment.SwipeRefreshFragment;
+import me.jingbin.byrecyclerview.view.MyFragmentPagerAdapter;
+
+/**
+ * @author jingbin
+ */
+public class LoadMoreActivity extends BaseActivity<ActivityRefreshBinding> {
+
+    private ArrayList<String> mTitleList = new ArrayList<>(2);
+    private ArrayList<Fragment> mFragments = new ArrayList<>(2);
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_refresh);
+        setTitle("自动加载更多、松手加载更多");
+
+        initView();
+    }
+
+    private void initView() {
+        initFragmentList();
+        MyFragmentPagerAdapter myAdapter = new MyFragmentPagerAdapter(getSupportFragmentManager(), mFragments, mTitleList);
+        binding.viewPager.setAdapter(myAdapter);
+        binding.viewPager.setOffscreenPageLimit(1);
+        myAdapter.notifyDataSetChanged();
+        binding.tabLayout.setupWithViewPager(binding.viewPager);
+    }
+
+    private void initFragmentList() {
+        mTitleList.clear();
+        mTitleList.add("自动加载更多");
+        mTitleList.add("松手加载更多");
+        mFragments.add(RefreshFragment.newInstance("auto"));
+        mFragments.add(RefreshFragment.newInstance(""));
+    }
+
+}

app/src/main/java/me/jingbin/byrecyclerview/fragment/RefreshFragment.java

@@ -75,6 +75,9 @@ protected void loadData() {
     }
 
     private void initAdapter() {
+        // 是否是自动加载更多
+        boolean isAutoLoadMore = "auto".equals(mType);
+
         recyclerView = getView(R.id.recyclerView);
         mAdapter = new DataAdapter(DataUtil.get(activity, 10));
         LinearLayoutManager layoutManager = new LinearLayoutManager(activity);
@@ -83,13 +86,20 @@ private void initAdapter() {
         // 加了分割线，滚动条才会置顶
         recyclerView.addItemDecoration(new SpacesItemDecoration(recyclerView.getContext(), SpacesItemDecoration.VERTICAL, 1));
         recyclerView.setAdapter(mAdapter);
-        recyclerView.setOnLoadMoreListener(new ByRecyclerView.OnLoadMoreListener() {
+        /**
+         * 设置自动加载更多一定要通过 【setOnLoadMoreListener】 方式设置！
+         *      isAutoLoadMore： 是否自动加载更多，之后的打开/关闭加载更多还是使用 setLoadMoreEnabled()
+         *      2： 滑动到倒数第 2 条数据加载，默认1
+         *
+         * 也可以使用：setOnLoadMoreListener(boolean isAutoLoadMore, OnLoadMoreListener listener)
+         */
+        recyclerView.setOnLoadMoreListener(isAutoLoadMore, 2, new ByRecyclerView.OnLoadMoreListener() {
             @Override
             public void onLoadMore() {
                 recyclerView.postDelayed(new Runnable() {
                     @Override
                     public void run() {
-                        if (page == 3) {
+                        if (page == 4) {
                             recyclerView.loadMoreEnd();
                             return;
                         }