提交MultipleItemRvAdapter相关代码以及demo中添加其使用示例

Author: chaychan

library/src/main/java/com/chad/library/adapter/base/util/ItemProviderAnnotationException.java

@@ -0,0 +1,17 @@
+package com.chad.library.adapter.base.util;
+
+/**
+ * https://github.com/chaychan
+ *
+ * @author ChayChan
+ * @description: AnnotationException
+ * @date 2018/3/30  17:07
+ */
+
+public class ItemProviderAnnotationException extends RuntimeException {
+
+    public ItemProviderAnnotationException(String message) {
+        super(message);
+    }
+
+}

library/src/main/java/com/chad/library/adapter/base/util/ProviderDelegate.java

@@ -18,7 +18,7 @@ public class ProviderDelegate {
     public void registerProvider(BaseItemProvider provider){
         ItemProviderTag tag = provider.getClass().getAnnotation(ItemProviderTag.class);
         if (tag == null){
-            throw new RuntimeException("ItemProviderTag not def layout");
+            throw new ItemProviderAnnotationException("ItemProviderTag not def layout");
         }
 
         int viewType = tag.viewType();