<LinearLayout
  android:id="@+id/ll_mycollection_bottom_dialog"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:orientation="vertical"
  android:layout_gravity="bottom"
  android:visibility="gone"
  android:background="@color/app_bg">

  <View
   android:background="#e5e5e5"
   android:layout_width="match_parent"
   android:layout_height="1px"/>

  <RelativeLayout
   android:background="@color/white"
   android:layout_width="match_parent"
   android:layout_height="@dimen/px_90">


   <TextView
    android:layout_centerVertical="true"
    android:id="@+id/tv"
    android:textColor="#1A1A1A"
    android:textSize="@dimen/px_28"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="@dimen/px_30"
    android:text="@string/mine_certify_select" />

   <TextView
    android:layout_centerVertical="true"
    android:layout_toRightOf="@+id/tv"
    android:textColor="#1A1A1A"
    android:textSize="@dimen/px_28"
    android:id="@+id/tv_select_num"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="@dimen/px_18"
    android:text="0" />

   <Button
    android:textColor="@color/color_b7b8bd"
    android:textSize="@dimen/px_28"
    android:layout_centerVertical="true"
    android:background="@drawable/button__noclickable_shape"
    android:gravity="center"
    android:id="@+id/btn_delete"
    android:layout_width="@dimen/px_160"
    android:layout_height="@dimen/px_66"
    android:layout_marginRight="@dimen/px_30"
    android:layout_alignParentRight="true"
    android:text="删除" />

   <TextView
    android:layout_centerVertical="true"
    android:id="@+id/select_all"
    android:layout_marginRight="@dimen/px_30"
    android:background="@drawable/bg_selete_all"
    android:layout_toLeftOf="@+id/btn_delete"
    android:layout_width="@dimen/px_160"
    android:layout_height="@dimen/px_66"
    android:text="全选"
    android:gravity="center"
    android:textColor="#000001"
    android:textSize="@dimen/px_28"/>

  </RelativeLayout>
 </LinearLayout>

  <ImageView
   android:id="@+id/check_box"
   android:src="@mipmap/ic_uncheck"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="center_vertical"
   android:layout_marginLeft="@dimen/px_24"
   android:gravity="center"
   android:visibility="gone"/>

 public void notifyAdapter(List<MyLiveList.MyLive> myLiveList,boolean isAdd){
  if (!isAdd){
   this.mMyLiveList=myLiveList;
  }else {
   this.mMyLiveList.addAll(myLiveList);
  }
  notifyDataSetChanged();
 }

 mAdapter.notifyAdapter(data.getList(), false);

 public List<MyLiveList.MyLive> getMyLiveList(){
  if (mMyLiveList == null) {
   mMyLiveList =new ArrayList<>();
  }
  return mMyLiveList;
 }

 private static final int MYLIVE_MODE_CHECK = 0;
 private static final int MYLIVE_MODE_EDIT = 1;

//点击编辑的时候显示,顺便调mAdapter.setEditMode(mEditMode);赋值
 mEditMode = mEditMode == MYLIVE_MODE_CHECK ? MYLIVE_MODE_EDIT : MYLIVE_MODE_CHECK;
  if (mEditMode == MYLIVE_MODE_EDIT) {
   activity_btn.setText("取消");
   ll_mycollection_bottom_dialog.setVisibility(View.VISIBLE);
   editorStatus = true;
  } else {
   activity_btn.setText("编辑");
   ll_mycollection_bottom_dialog.setVisibility(View.GONE);
   editorStatus = false;
   onRefresh();
  }
  mAdapter.setEditMode(mEditMode);

//当然,adapter中也有先关的变量在记录
 private static final int MYLIVE_MODE_CHECK = 0;
 int mEditMode = MYLIVE_MODE_CHECK;

 public void setEditMode(int editMode) {
  mEditMode = editMode;
  notifyDataSetChanged();
 }
//在onBindViewHolder中做显示和隐藏的操作.

 holder.setIsRecyclable(false); // 为了条目不复用

//显示和隐藏
  if (mEditMode == MYLIVE_MODE_CHECK) {
   holder.mCheckBox.setVisibility(View.GONE);
  } else {
   holder.mCheckBox.setVisibility(View.VISIBLE);

 public boolean isSelect;
  public boolean isSelect() {
   return isSelect;
  }
  public void setSelect(boolean isSelect) {
   this.isSelect = isSelect;
  }
//然后点击条目选中和不选中的时候为Imageview设置不同的图片
   if(myLive.isSelect()) {
    holder.mCheckBox.setImageResource(R.mipmap.ic_checked);
   }else{
    holder.mCheckBox.setImageResource(R.mipmap.ic_uncheck);
   }

//在adapter中暴漏一个Item的点击事件的接口
 public interface OnSwipeListener {
  void onItemClickListener(int pos,List<MyLiveList.MyLive> myLiveList);
 }

/* 
在activity中的item点击事件中,来操作Imageview是否选中 
*/

//用一个变量记录
 private int index = 0;

 MyLive myLive = myLiveList.get(pos);
   boolean isSelect = myLive.isSelect();
   if (!isSelect) {
    index++;
    myLive.setSelect(true);
    if (index == myLiveList.size()) {
     isSelectAll = true;
     selectAll.setText("取消全选");
    }

   } else {
    myLive.setSelect(false);
    index--;
    isSelectAll = false;
    selectAll.setText("全选");
   }
   setBtnBackground(index);
   tv_select_num.setText(String.valueOf(index));
   radioAdapter.notifyDataSetChanged();

 /**
  * 根据选择的数量是否为0来判断按钮的是否可点击.
  *
  * @param size
  */
 private void setBtnBackground(int size) {
  if (size != 0) {
   mBtnDelete.setBackgroundResource(R.drawable.button_shape);
   mBtnDelete.setEnabled(true);
   mBtnDelete.setTextColor(Color.WHITE);
  } else {
   mBtnDelete.setBackgroundResource(R.drawable.button__noclickable_shape);
   mBtnDelete.setEnabled(false);
   mBtnDelete.setTextColor(ContextCompat.getColor(this, R.color.color_b7b8bd));
  }
 }

 if (radioAdapter == null) return;
  if (!isSelectAll) {
   for (int i = 0, j = radioAdapter.getMyLiveList().size(); i < j; i++) {
    radioAdapter.getMyLiveList().get(i).setSelect(true);
   }
   index = radioAdapter.getMyLiveList().size();
   mBtnDelete.setEnabled(true);
   selectAll.setText("取消全选");
   isSelectAll = true;
  } else {
   for (int i = 0, j = radioAdapter.getMyLiveList().size(); i < j; i++) {
    radioAdapter.getMyLiveList().get(i).setSelect(false);
   }
   index = 0;
   mBtnDelete.setEnabled(false);
   selectAll.setText("全选");
   isSelectAll = false;
  }
  radioAdapter.notifyDataSetChanged();
  setBtnBackground(index);
  tv_select_num.setText(String.valueOf(index));