Deprecated interface ItemProvideTag;

Replace reflections with native method;

Author: chaychan

app/src/main/java/com/chaychan/multiitemrvadapter/adapter/MessageListAdapter.java

@@ -2,6 +2,7 @@
 
 import android.support.annotation.Nullable;
 
+import com.chad.library.adapter.base.BaseViewHolder;
 import com.chaychan.adapter.MultipleItemRvAdapter;
 import com.chaychan.multiitemrvadapter.adapter.provider.ImageMessageItemProvider;
 import com.chaychan.multiitemrvadapter.adapter.provider.TextMessageItemProvider;
@@ -17,7 +18,7 @@
  * @date 2018/3/21  14:40
  */
 
-public class MessageListAdapter extends MultipleItemRvAdapter<Message> {
+public class MessageListAdapter extends MultipleItemRvAdapter<Message,BaseViewHolder> {
 
     public static final int TYPE_TEXT = 0;
     public static final int TYPE_IMG = 1;

app/src/main/java/com/chaychan/multiitemrvadapter/adapter/provider/ImageMessageItemProvider.java

@@ -6,21 +6,26 @@
 import com.bumptech.glide.Glide;
 import com.chad.library.adapter.base.BaseViewHolder;
 import com.chaychan.adapter.BaseItemProvider;
-import com.chaychan.adapter.ItemProviderTag;
-import com.chaychan.multiitemrvadapter.model.ImageMessage;
 import com.chaychan.multiitemrvadapter.R;
 import com.chaychan.multiitemrvadapter.adapter.MessageListAdapter;
+import com.chaychan.multiitemrvadapter.model.ImageMessage;
 
 /**
  * @author ChayChan
  * @description 图片消息条目的provider
  * @date 2018/3/21  14:43
  */
-@ItemProviderTag(
-        viewType = MessageListAdapter.TYPE_IMG,
-        layout = R.layout.item_image_message
-)
-public class ImageMessageItemProvider extends BaseItemProvider<ImageMessage> {
+public class ImageMessageItemProvider extends BaseItemProvider<ImageMessage,BaseViewHolder> {
+
+    @Override
+    public int viewType() {
+        return MessageListAdapter.TYPE_IMG;
+    }
+
+    @Override
+    public int layout() {
+        return R.layout.item_image_message;
+    }
 
     @Override
     public void convert(BaseViewHolder helper, ImageMessage data, int position) {

app/src/main/java/com/chaychan/multiitemrvadapter/adapter/provider/TextMessageItemProvider.java

@@ -4,21 +4,26 @@
 
 import com.chad.library.adapter.base.BaseViewHolder;
 import com.chaychan.adapter.BaseItemProvider;
-import com.chaychan.adapter.ItemProviderTag;
 import com.chaychan.multiitemrvadapter.R;
-import com.chaychan.multiitemrvadapter.model.TextMessage;
 import com.chaychan.multiitemrvadapter.adapter.MessageListAdapter;
+import com.chaychan.multiitemrvadapter.model.TextMessage;
 
 /**
  * @author ChayChan
  * @description 文本消息条目的provider
  * @date 2018/3/21  14:43
  */
-@ItemProviderTag(
-        viewType = MessageListAdapter.TYPE_TEXT,
-        layout = R.layout.item_text_message
-)
-public class TextMessageItemProvider extends BaseItemProvider<TextMessage> {
+public class TextMessageItemProvider extends BaseItemProvider<TextMessage,BaseViewHolder> {
+
+    @Override
+    public int viewType() {
+        return MessageListAdapter.TYPE_TEXT;
+    }
+
+    @Override
+    public int layout() {
+        return R.layout.item_text_message;
+    }
 
     @Override
     public void convert(BaseViewHolder helper, TextMessage data, int position) {

library/src/main/java/com/chaychan/adapter/BaseItemProvider.java

@@ -7,19 +7,32 @@
 import java.util.List;
 
 /**
+ * https://github.com/chaychan
  * @author ChayChan
- * @description: 条目provider的基类
+ * @description: The base class of ItemProvider
  * @date 2018/3/21  10:41
  */
 
-public abstract class BaseItemProvider<T> {
+public abstract class BaseItemProvider<T,V extends BaseViewHolder> {
 
-    protected Context mContext;
-    protected List<T> mData;
+    public Context mContext;
+    public List<T> mData;
 
-    public abstract void convert(BaseViewHolder helper, T data, int position);
+    //子类须重写该方法返回viewType
+    //Rewrite this method to return viewType
+    public abstract int viewType();
 
-    public abstract void onClick(BaseViewHolder helper,T data,int position);
+    //子类须重写该方法返回layout
+    //Rewrite this method to return layout
+    public abstract int layout();
 
-    public abstract boolean onLongClick(BaseViewHolder helper,T data,int position);
+    public abstract void convert(V helper, T data, int position);
+
+    //子类若想实现条目点击事件则重写该方法
+    //Subclasses override this method if you want to implement an item click event
+    public void onClick(V helper, T data, int position){};
+
+    //子类若想实现条目长按事件则重写该方法
+    //Subclasses override this method if you want to implement an item long press event
+    public boolean onLongClick(V helper, T data, int position){return false;};
 }

library/src/main/java/com/chaychan/adapter/ItemProviderException.java

@@ -0,0 +1,15 @@
+package com.chaychan.adapter;
+
+/**
+ * @author ChayChan
+ * @description: ItemProviderException
+ * @date 2018/4/12  9:10
+ */
+
+public class ItemProviderException extends NullPointerException {
+
+    public ItemProviderException(String message) {
+        super(message);
+    }
+
+}

library/src/main/java/com/chaychan/adapter/ItemProviderTag.java

@@ -13,6 +13,7 @@
 
 @Target({ElementType.TYPE})
 @Retention(RetentionPolicy.RUNTIME)
+@Deprecated
 public @interface ItemProviderTag {
     int viewType();
     int layout();

library/src/main/java/com/chaychan/adapter/MultipleItemRvAdapter.java

@@ -11,12 +11,15 @@
 import java.util.List;
 
 /**
+ * https://github.com/chaychan
  * @author ChayChan
- * @description: 封装多条目adapter
+ * @description:
+ * When there are multiple entries, avoid too much business logic in convert(),Put the logic of each item in the corresponding ItemProvider
+ * 当有多种条目的时候，避免在convert()中做太多的业务逻辑，把逻辑放在对应的ItemProvider中
  * @date 2018/3/21  9:55
  */
 
-public abstract class MultipleItemRvAdapter<T> extends BaseQuickAdapter<T, BaseViewHolder> {
+public abstract class MultipleItemRvAdapter<T,V extends BaseViewHolder> extends BaseQuickAdapter<T, V> {
 
     private SparseArray<BaseItemProvider> mItemProviders;
     protected ProviderDelegate mProviderDelegate;
@@ -27,6 +30,7 @@ public MultipleItemRvAdapter(@Nullable List<T> data) {
 
     /**
      * 用于adapter构造函数完成参数的赋值后调用
+     * Called after the assignment of the argument to the adapter constructor
      */
     public void finishInitialize() {
         mProviderDelegate = new ProviderDelegate();
@@ -42,14 +46,12 @@ protected int getItemType(T t) {
         registerItemProvider();
 
         mItemProviders = mProviderDelegate.getItemProviders();
+
         for (int i = 0; i < mItemProviders.size(); i++) {
             int key = mItemProviders.keyAt(i);
-
             BaseItemProvider provider = mItemProviders.get(key);
             provider.mData = mData;
-
-            ItemProviderTag tag = provider.getClass().getAnnotation(ItemProviderTag.class);
-            getMultiTypeDelegate().registerItemType(key, tag.layout());
+            getMultiTypeDelegate().registerItemType(key, provider.layout());
         }
     }
 
@@ -58,7 +60,7 @@ protected int getItemType(T t) {
     public abstract void registerItemProvider();
 
     @Override
-    protected void convert(BaseViewHolder helper, T item) {
+    protected void convert(V helper, T item) {
         int itemViewType = helper.getItemViewType();
         BaseItemProvider provider = mItemProviders.get(itemViewType);
 
@@ -70,19 +72,21 @@ protected void convert(BaseViewHolder helper, T item) {
         bindClick(helper, item, position, provider);
     }
 
-    private void bindClick(final BaseViewHolder helper, final T item, final int position, final BaseItemProvider provider) {
+    private void bindClick(final V helper, final T item, final int position, final BaseItemProvider provider) {
         OnItemClickListener clickListener = getOnItemClickListener();
         OnItemLongClickListener longClickListener = getOnItemLongClickListener();
 
         if (clickListener != null && longClickListener != null){
             //如果已经设置了子条目点击监听和子条目长按监听
+            // If you have set up a sub-entry click monitor and sub-entries long press listen
             return;
         }
 
         View itemView = helper.itemView;
 
         if (clickListener == null){
             //如果没有设置点击监听，则回调给itemProvider
+            //Callback to itemProvider if no click listener is set
             itemView.setOnClickListener(new View.OnClickListener() {
                 @Override
                 public void onClick(View v) {
@@ -93,6 +97,7 @@ public void onClick(View v) {
 
         if (longClickListener == null){
             //如果没有设置长按监听，则回调给itemProvider
+            // If you do not set a long press listener, callback to the itemProvider
             itemView.setOnLongClickListener(new View.OnLongClickListener() {
                 @Override
                 public boolean onLongClick(View v) {

library/src/main/java/com/chaychan/adapter/ProviderDelegate.java

@@ -3,6 +3,7 @@
 import android.util.SparseArray;
 
 /**
+ * https://github.com/chaychan
  * @author ChayChan
  * @date 2018/3/21  11:04
  */
@@ -12,12 +13,12 @@ public class ProviderDelegate {
     private SparseArray<BaseItemProvider> mItemProviders = new SparseArray<>();
 
     public void registerProvider(BaseItemProvider provider){
-        ItemProviderTag tag = provider.getClass().getAnnotation(ItemProviderTag.class);
-        if (tag == null){
-            throw new RuntimeException("Can not find the annotation: 'ItemProviderTag'");
+        if (provider == null){
+            throw new ItemProviderException("ItemProvider can not be null");
         }
 
-        int viewType = tag.viewType();
+        int viewType = provider.viewType();
+
         if (mItemProviders.get(viewType) == null){
             mItemProviders.put(viewType,provider);
         }