Android Recyclerview实现多选,单选,全选,反选,批量删除的功能

 <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));