I have developed a Material Design based Navigation Drawer containing a Header View, following this tutorial: How To Make Material Design Navigation Drawer With Header View.
I am trying to add a separator with a category name underneath it but there seem to be a problem with the position of the dataset corresponding to my separator. This means that the separator loads correctly, but not in the position where I want it to be. Basically what I I've tried to do is to pass an ArrayList of "DrawerItem" objects into "MyAdapter" class extending RecyclerView. The arraylist contains everything: -the header's parameters -the items names and icons -and the separator, devised itself also as a DrawerItem object but with only a string as title (in my case "Others").
This is my code:
DrawerItem:
package madapps.materialdesignappbar;
public class DrawerItem {
String ItemName;
int imgResID;
String title;
String name ;
String email ;
int profile ;
public DrawerItem(String Name, String Email, int profileResID){
name = Name;
email = Email;
profile = profileResID;
}
public DrawerItem(String itemName, int imgResID) {
ItemName = itemName;
this.imgResID = imgResID;
}
//separator case
public DrawerItem(String title) {
this(null, 0);
this.title = title;
this.ItemName = "separator";
}
public String getTitle(){
return title;
}
public void setTitle(String title){
this.title = title;
}
public String getItemName() {
return ItemName;
}
public int getImgResID() {
return imgResID;
}
public void setItemName(String itemName) {
this.ItemName = itemName;
}
public void setImgResID(int imgResID) {
this.imgResID = imgResID;
}
public void setName(String Name){
this.name = Name;
}
public void setEmail(String Email){
this.email = Email;
}
public void setProfile(int Profile){
this.profile = Profile;
}
public String getName(){
return name;
}
public String getEmail(){
return email;
}
public int getProfile(){
return profile;
}
}
MyAdapter
package madapps.materialdesignappbar;
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private static final int TYPE_HEADER = 0; // Declaring Variable to Understand which View is being worked on
// IF the view under inflation and population is header or Item
private static final int TYPE_ITEM = 1;
private static final int TYPE_SEPARATOR = 2;
private ArrayList<DrawerItem> data;
MyAdapter(ArrayList<DrawerItem> Data){
// MyAdapter Constructor with titles and icons parameter
// titles, icons, name, email, profile pic are passed from the main activity as we have seen earlier
data = Data;
}
// Creating a ViewHolder which extends the RecyclerView View Holder
// ViewHolder are used to to store the inflated views in order to recycle them
public static class ViewHolder extends RecyclerView.ViewHolder {
int Holderid;
LinearLayout itemLayout;
TextView textView;
ImageView imageView;
ImageView profile;
TextView Name;
TextView email;
TextView drawerTitle;
LinearLayout separatorLayout;
// Creating ViewHolder Constructor with View and viewType As a parameter
public ViewHolder(View itemView, int ViewType) {
super(itemView);
// Here we set the appropriate view in accordance with the
// the view type as passed when the holder object is created
if (ViewType == TYPE_HEADER){
Name = (TextView) itemView.findViewById(R.id.name); // Creating Text View object from header.xml for name
email = (TextView) itemView.findViewById(R.id.email); // Creating Text View object from header.xml for email
profile = (ImageView) itemView.findViewById(R.id.circleView); // Creating Image view object from header.xml for profile pic
Holderid = 0; // Setting holder id = 0 as the object being populated are of type header view
}
if(ViewType == TYPE_ITEM) {
textView = (TextView) itemView.findViewById(R.id.rowText); // Creating TextView object with the id of textView from item_row.xml
imageView = (ImageView) itemView.findViewById(R.id.rowIcon); // Creating ImageView object with the id of ImageView from item_row.xml
Holderid = 1; // setting holder id as 1 as the object being populated are of type item row
}
if(ViewType == TYPE_SEPARATOR){
drawerTitle = (TextView) itemView.findViewById(R.id.drawerTitle);
Holderid = 2;
}
}
}
//Below first we Override the method onCreateViewHolder which is called when the ViewHolder is
//Created, In this method we inflate the item_row.xml layout if the viewType is Type_ITEM or else we inflate header.xml
// if the viewType is TYPE_HEADER
// and pass it to the view holder
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == TYPE_HEADER) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.header, parent, false); //Inflating the layout
ViewHolder vhHeader = new ViewHolder(v,viewType); //Creating ViewHolder and passing the object of type view
return vhHeader; //returning the object created
}else
if (viewType == TYPE_ITEM) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_row, parent, false); //Inflating the layout
ViewHolder vhItem = new ViewHolder(v, viewType); //Creating ViewHolder and passing the object of type view
return vhItem; // Returning the created object
//inflate your layout and pass it to view holder
}
if (viewType == TYPE_SEPARATOR){
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.separator, parent, false);
ViewHolder vhSeparator = new ViewHolder(v, viewType);
return vhSeparator;
}
return null;
}
/* Next we override a method which is called when the item in a row is needed to be displayed,
@param position tells us item at which position is being constructed to be displayed
@param holder id of the holder object tell us which view type is being created 1 for item row */
@Override
public void onBindViewHolder(MyAdapter.ViewHolder holder, int position) {
if(holder.Holderid==0) {
holder.profile.setImageResource(data.get(0).getProfile()); // Similarly we set the resources for header view
holder.Name.setText(data.get(0).getName());
holder.email.setText(data.get(0).getEmail());
}
if(holder.Holderid == 1) {
// as the list view is 1going to be called after the header view so we decrement the
holder.textView.setText(data.get(position).title);
holder.imageView.setImageResource(data.get(position).imgResID);
}if (holder.Holderid==2){
holder.drawerTitle.setText(data.get(4).getItemName());
}
}
// This method returns the number of items present in the list
@Override
public int getItemCount() {
return data.size();
}
// With the following method we check what type of view is being passed
@Override
public int getItemViewType(int position) {
if (isPositionHeader(position)) {//if position == 0 return true
return TYPE_HEADER; //0
}
if(isSeparator(position)){
return TYPE_SEPARATOR;
}
return TYPE_ITEM;
}
private boolean isSeparator(int position){
return position==2;
}
private boolean isPositionHeader(int position) {
return position == 0;
}
}
As you can see I am populating the ArrayList of DrawerItem with three kinds of objects, in this order (code from MainActivity):
ArrayList data = new ArrayList<DrawerItem>();
data.add(new DrawerItem("Chris Benois","chris_benois@mail.com",R.mipmap.aka));
data.add( new DrawerItem("Home",R.mipmap.ic_home));
data.add( new DrawerItem("Events",R.mipmap.ic_events));
data.add( new DrawerItem("Mail", R.mipmap.ic_mail));
data.add(new DrawerItem("Others"));
data.add( new DrawerItem("Shop", R.mipmap.ic_shop));
data.add( new DrawerItem("Travel", R.mipmap.ic_travel));
the problem is that my "separator" separator doesn't come up where I want it to be (just before "Shop" item), but elsewhere as shown in this image:
How can I move it where I want to?
