content: /*
   * MIT License
   *
   * Copyright (c) 2016 Alibaba Group
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  package com.alibaba.android.vlayout;
  
  import android.support.v7.widget.RecyclerView;
  
  import java.lang.reflect.Field;
  import java.lang.reflect.Method;
  
  /**
   * Created by villadora on 16/2/24.
   */
  public class ViewHolderHelper {
  
      private static Field vhField = null;
  
  
      public static void setField(RecyclerView.ViewHolder holder, String fieldName, Object value) {
          try {
              Field f = RecyclerView.LayoutParams.class.getDeclaredField(fieldName);
              f.setAccessible(true);
              f.set(holder, value);
          } catch (NoSuchFieldException e) {
              e.printStackTrace();
          } catch (IllegalAccessException e) {
              e.printStackTrace();
          }
      }
  
  
      public static RecyclerView.ViewHolder getViewHolder(RecyclerView.LayoutParams params) {
          try {
              if (vhField == null) {
                  vhField = RecyclerView.LayoutParams.class.getDeclaredField("mViewHolder");
                  vhField.setAccessible(true);
              }
  
              //vhField.set(params, holder);
  
              return (RecyclerView.ViewHolder) vhField.get(params);
          } catch (NoSuchFieldException e) {
              e.printStackTrace();
          } catch (IllegalAccessException e) {
              e.printStackTrace();
          }
  
          return null;
      }
  
  
      private static Method vhSetFlags;
  
      public static void addViewHolderFlag(RecyclerView.ViewHolder holder, int flag) {
          try {
              if (vhSetFlags == null) {
                  vhSetFlags = RecyclerView.ViewHolder.class.getDeclaredMethod("addFlags", int.class);
                  vhSetFlags.setAccessible(true);
              }
  
              vhSetFlags.invoke(holder, flag);
          } catch (Exception e) {
  
          }
      }
  }
  