add BaseListAdapter 增加 setNewData

youlookwhat · Jun 7, 2024 · ae6393a · ae6393a
1 parent b11fe6e
commit ae6393a
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Showing 3 changed files with 31 additions and 9 deletions.
diff --git a/ByRecyclerview/src/main/java/me/jingbin/library/adapter/BaseByRecyclerViewAdapter.java b/ByRecyclerview/src/main/java/me/jingbin/library/adapter/BaseByRecyclerViewAdapter.java
@@ -238,7 +238,7 @@ public void setPageEmptyView(int emptyLayoutId) {
     }
 
     /**
-     * 设置数据和处理空视图。空视图是在 setEmptyView() 设置的。
+     * 设置数据和处理空视图。空视图是在 setPageEmptyView() 设置的。
      * 如果想列表上方显示状态视图(StateView)，不能使用这个方法。
      *
      * @param isFirstPage 是否是第一页

diff --git a/ByRecyclerview/src/main/java/me/jingbin/library/adapter/BaseListAdapter.java b/ByRecyclerview/src/main/java/me/jingbin/library/adapter/BaseListAdapter.java
@@ -37,17 +37,21 @@ protected BaseListAdapter() {
     }
 
     protected BaseListAdapter(List<T> data) {
-        this.mData = data == null ? new ArrayList<T>() : data;
+        mData = data == null ? new ArrayList<T>() : data;
     }
 
     @Override
     public int getCount() {
+        checkNoNull();
         return mData.size();
     }
 
     @Override
     public T getItem(int position) {
-        return mData.get(position);
+        if (mData != null && mData.size() > 0 && position >= 0 && position < mData.size()) {
+            return mData.get(position);
+        }
+        return null;
     }
 
     @Override
@@ -81,24 +85,41 @@ public List<T> getData() {
     }
 
     public void setData(List<T> data) {
-        this.mData = data;
+        mData = data;
     }
 
     public void addAll(List<T> data) {
-        this.mData.addAll(data);
+        checkNoNull();
+        mData.addAll(data);
     }
 
     public void removeAll(List<T> data) {
-        this.mData.removeAll(data);
+        if (mData == null) return;
+        mData.removeAll(data);
     }
 
     public void add(T t) {
-        this.mData.add(t);
+        checkNoNull();
+        mData.add(t);
     }
 
     public void clear() {
-        this.mData.clear();
+        if (mData == null) return;
+        mData.clear();
     }
 
+    private void checkNoNull() {
+        if (mData == null) {
+            mData = new ArrayList<>();
+        }
+    }
+
+    /**
+     * 初始化数据，并刷新页面
+     */
+    public void setNewData(List<T> data) {
+        this.mData = data == null ? new ArrayList<T>() : data;
+        notifyDataSetChanged();
+    }
 
 }
diff --git a/app/src/main/java/me/jingbin/byrecyclerview/fragment/BindingListFragment.java b/app/src/main/java/me/jingbin/byrecyclerview/fragment/BindingListFragment.java
@@ -71,10 +71,11 @@ private void initAdapter() {
         LayoutHeaderViewBinding headerBinding = DataBindingUtil.inflate(LayoutInflater.from(activity), R.layout.layout_header_view, binding.listView, false);
         LayoutFooterViewBinding footerBinding = DataBindingUtil.inflate(LayoutInflater.from(activity), R.layout.layout_footer_view, binding.listView, false);
 
-        ListViewBindingAdapter mAdapter = new ListViewBindingAdapter(DataUtil.get(activity, 30));
+        ListViewBindingAdapter mAdapter = new ListViewBindingAdapter();
         binding.listView.setAdapter(mAdapter);
         binding.listView.addFooterView(footerBinding.getRoot());
         binding.listView.addHeaderView(headerBinding.getRoot());
+        mAdapter.setNewData(DataUtil.get(activity, 30));
 
         binding.listView.setHeaderDividersEnabled(false);
         binding.listView.setFooterDividersEnabled(false);