更新测试代码

app/src/main/AndroidManifest.xml

@@ -11,7 +11,10 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         tools:ignore="AllowBackup">
-        <activity android:name=".MainActivity">
+        <activity android:name=".ScrollToPositionHelperActivity"></activity>
+        <activity android:name=".SelectableHelperActivity" />
+        <activity android:name=".ItemClickHelperActivity" />
+        <activity android:name="com.test.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/test/MainActivity.java

@@ -0,0 +1,101 @@
+package com.test;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.test.helper.ItemClickHelperActivity;
+import com.test.helper.R;
+import com.test.helper.ScrollToPositionHelperActivity;
+import com.test.helper.SelectableHelperActivity;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import recyclerview.helper.ItemClickHelper;
+import recyclerview.helper.ItemClickableAdapter;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        List<TestListAdapter.Item> itemList = new ArrayList<>();
+
+        itemList.add(new TestListAdapter.Item("ItemClickHelper", ItemClickHelperActivity.class));
+        itemList.add(new TestListAdapter.Item("SelectableHelper", SelectableHelperActivity.class));
+        itemList.add(new TestListAdapter.Item("ScrollToPositionHelper", ScrollToPositionHelperActivity.class));
+
+        RecyclerView recyclerView = findViewById(R.id.recyclerView);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(new TestListAdapter(this, itemList));
+    }
+
+    private static class TestListAdapter extends ItemClickableAdapter<TestListAdapter.ViewHolder> {
+        private Context mContext;
+        private List<Item> mItemList;
+
+        TestListAdapter(Context context, List<Item> itemList) {
+            mContext = context;
+            mItemList = new ArrayList<>(itemList);
+
+            setOnItemClickListener(new ItemClickHelper.OnItemClickListener() {
+                @Override
+                public void onItemClicked(int position, int viewId, View view, RecyclerView.ViewHolder holder) {
+                    Intent intent = new Intent(mContext, mItemList.get(position).activity);
+                    mContext.startActivity(intent);
+                }
+            });
+        }
+
+        @NonNull
+        @Override
+        public TestListAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+            return new ViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(android.R.layout.simple_list_item_1, parent, false));
+        }
+
+        @Override
+        public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+            super.onBindViewHolder(holder, position);
+
+            holder.text1.setText(mItemList.get(position).title);
+        }
+
+        @Override
+        public int getItemCount() {
+            return mItemList.size();
+        }
+
+        private static class ViewHolder extends RecyclerView.ViewHolder {
+            TextView text1;
+
+            ViewHolder(@NonNull View itemView) {
+                super(itemView);
+                text1 = itemView.findViewById(android.R.id.text1);
+            }
+        }
+
+        private static class Item {
+            String title;
+            Class<? extends Activity> activity;
+
+            Item(String title, Class<? extends Activity> activity) {
+                this.title = title;
+                this.activity = activity;
+            }
+        }
+    }
+}

app/src/main/java/com/test/helper/ItemClickHelperActivity.java

@@ -0,0 +1,116 @@
+package com.test.helper;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import recyclerview.helper.ItemClickHelper;
+
+public class ItemClickHelperActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_item_click_helper);
+
+        RecyclerView recyclerView = findViewById(R.id.recyclerView);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(new ItemClickHelperAdapter(this, 50));
+    }
+
+    public static class ItemClickHelperAdapter extends RecyclerView.Adapter<ItemClickHelperAdapter.ViewHolder> {
+        private Context mContext;
+        private int mSize;
+        private ItemClickHelper mItemClickHelper;
+
+        ItemClickHelperAdapter(Context context, int size) {
+            mContext = context;
+            mSize = size;
+            mItemClickHelper = new ItemClickHelper();
+
+            mItemClickHelper.setOnItemClickListener(new ItemClickHelper.OnItemClickListener() {
+                @Override
+                public void onItemClicked(int position, int viewId, View view, RecyclerView.ViewHolder holder) {
+                    switch (viewId) {
+                        case R.id.item:
+                            Toast.makeText(mContext, "ItemClicked, position: " + position, Toast.LENGTH_SHORT).show();
+                            break;
+                        case R.id.button:
+                            Toast.makeText(mContext, "ButtonClicked, position: " + position, Toast.LENGTH_SHORT).show();
+                            break;
+                    }
+                }
+            });
+
+            mItemClickHelper.setOnItemLongClickListener(new ItemClickHelper.OnItemLongClickListener() {
+                @Override
+                public boolean onItemLongClicked(int position, int viewId, View view, RecyclerView.ViewHolder holder) {
+                    switch (viewId) {
+                        case R.id.item:
+                            Toast.makeText(mContext, "ItemLongClicked, position: " + position, Toast.LENGTH_SHORT).show();
+                            return true;
+                        case R.id.button:
+                            Toast.makeText(mContext, "ButtonLongClicked, position: " + position, Toast.LENGTH_SHORT).show();
+                            return true;
+                    }
+
+                    return false;
+                }
+            });
+        }
+
+        @Override
+        public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
+            super.onAttachedToRecyclerView(recyclerView);
+            mItemClickHelper.attachToRecyclerView(recyclerView);
+        }
+
+        @Override
+        public void onDetachedFromRecyclerView(@NonNull RecyclerView recyclerView) {
+            super.onDetachedFromRecyclerView(recyclerView);
+            mItemClickHelper.detach();
+        }
+
+        @NonNull
+        @Override
+        public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+            return new ViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_recycler, parent, false));
+        }
+
+        @Override
+        public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+            mItemClickHelper.bindClickListener(holder.itemView, holder.button);
+            mItemClickHelper.bindLongClickListener(holder.itemView, holder.button);
+
+            holder.tvText.setText(String.valueOf(position));
+        }
+
+        @Override
+        public int getItemCount() {
+            return mSize;
+        }
+
+        static class ViewHolder extends RecyclerView.ViewHolder {
+            TextView tvText;
+            Button button;
+
+            ViewHolder(@NonNull View itemView) {
+                super(itemView);
+
+                tvText = itemView.findViewById(R.id.tvText);
+                button = itemView.findViewById(R.id.button);
+            }
+        }
+    }
+}

app/src/main/java/com/test/helper/ScrollToPositionHelperActivity.java

@@ -0,0 +1,94 @@
+package com.test.helper;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.os.Build;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import recyclerview.helper.ScrollToPositionHelper;
+
+public class ScrollToPositionHelperActivity extends AppCompatActivity {
+    private ScrollToPositionHelper mScrollToPositionHelper;
+
+    private static final int MAX_POSITION = 99;
+    private int mPosition = 0;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_scroll_to_position_helper);
+
+        RecyclerView recyclerView = findViewById(R.id.recyclerView);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(new Adapter(MAX_POSITION + 1));
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+            mScrollToPositionHelper = new ScrollToPositionHelper(recyclerView);
+        }
+    }
+
+    public void onClick(View view) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
+            Toast.makeText(this, "Require API Level 16", Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        mPosition += 5;
+
+        if (mPosition >= MAX_POSITION) {
+            mPosition = 0;
+        }
+
+        switch (view.getId()) {
+            case R.id.btnScrollTo:
+                mScrollToPositionHelper.scrollToPosition(mPosition);
+                break;
+            case R.id.btnSmoothScrollTo:
+                mScrollToPositionHelper.smoothScrollToPosition(mPosition);
+                break;
+        }
+    }
+
+    private static class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder> {
+        private int mSize;
+
+        Adapter(int size) {
+            mSize = size;
+        }
+
+        @NonNull
+        @Override
+        public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+            return new ViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(android.R.layout.simple_list_item_1, parent, false));
+        }
+
+        @Override
+        public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+            holder.text1.setText(String.valueOf(position));
+        }
+
+        @Override
+        public int getItemCount() {
+            return mSize;
+        }
+
+        static class ViewHolder extends RecyclerView.ViewHolder {
+            TextView text1;
+
+            ViewHolder(@NonNull View itemView) {
+                super(itemView);
+
+                text1 = itemView.findViewById(android.R.id.text1);
+            }
+        }
+    }
+}