21312312

app/src/main/java/com/example/bpa/view/adapter/wl_adapter.java

@@ -21,7 +21,7 @@ public class wl_adapter extends ArrayAdapter<BPA_MATERIAL> {
     @NonNull
     @Override
     public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
-        BPA_MATERIAL data = (BPA_MATERIAL) getItem(position);//得到当前项的 Fruit 实例
+        BPA_MATERIAL data = (BPA_MATERIAL) getItem(position);//得到当前项选中item实例
         //为每一个子项加载设定的布局
         View view = LayoutInflater.from(getContext()).inflate(R.layout.wl_item, parent, false);
         //分别获取 image view 和 textview 的实例

app/src/main/java/com/example/bpa/view/from/wlgl_activity.java

@@ -98,7 +98,7 @@ public class wlgl_activity extends AppCompatActivity implements View.OnClickList
     {
         try{
             bpa_materials= QueryDB.GetMaterialALL();
-            wl_adapter adapter = new wl_adapter(this, R.layout.wl_item, bpa_materials);
+            wl_adapter adapter = new wl_adapter(wlgl_activity.this, R.layout.wl_item, bpa_materials);
             datatab.setAdapter(adapter);
         }catch(Exception e){