This is a part java file which has the function loadMenu and when the corresponding intent opens, the app closes unexpectedly.
private void loadMenu() {
FirebaseRecyclerAdapter<Category,MenuViewHolder> adapter = new FirebaseRecyclerAdapter<Category, MenuViewHolder> (Category.class,R.layout.item_menu,MenuViewHolder.class,category) {
#Override
protected void populateViewHolder(MenuViewHolder viewHolder, Category model, int position) {
viewHolder.txtMenuname.setText(model.getName());
Picasso.with(getBaseContext()).load(model.getImage())
.into(viewHolder.imageView);
final Category clickItem = model;
viewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void OnClick(View view, int position, boolean isLongClick) {
Toast.makeText(navi.this,""+clickItem.getName(),Toast.LENGTH_SHORT).show();
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
}
});
}
};
recycle_menu.setAdapter(adapter);
}
This is my MenuviewHolder class:I just created a database for images in firebase and linking it to my app, but its not showing images just background.
public class MenuViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView txtMenuname;
public ImageView imageView;
private ItemClickListener itemClickListener;
public MenuViewHolder(View itemView) {
super(itemView);
txtMenuname = (TextView)itemView.findViewById(R.id.menu_name);
itemView = (ImageView)itemView.findViewById(R.id.menu_image);
itemView.setOnClickListener(this);
}
public void setItemClickListener(ItemClickListener itemClickListener){
this.itemClickListener = itemClickListener;
}
#Override
public void onClick(View view) {
itemClickListener.OnClick(view,getAdapterPosition(),false);
}
}
Adapter Code to link the images and name to app using firebaseUI
public class Category {
private String Name;
private String Image;
public Category(){
}
public Category(String name, String image){
Name = name;
Image = image;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getImage() {
return Image;
}
public void setImage(String image) {
Image = image;
}
}
private void loadMenu() {
FirebaseRecyclerAdapter<Category,MenuViewHolder>
adapter = new
FirebaseRecyclerAdapter <Category, MenuViewHolder>
(Category.class,R.layout.item_menu,
MenuViewHolder.class,category) {
#Override
protected void
populateViewHolder(MenuViewHolder viewHolder,
Category model, int position) {
viewHolder.txtMenuname.setText(model.getName());
If (model.getimage() != null){
Picasso.with(getapplicationcontext()).
load (model.getImage())
.into(viewHolder.imageView);}
else {//Toast here}
final Category clickItem = model;
viewHolder.setItemClickListener(new
ItemClickListener() {
#Override
public void OnClick(View view, int position,
boolean isLongClick) {
Toast.makeText(navi.this,""+clickItem.getName(),
Toast.LEN
GTH_SHORT).show();
}
#Override
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
}
});
}
};
recycle_menu.setAdapter(adapter);
}
Related
Idk why is it not working, Im trying to transfer data, i'm doing an app but when i run it i get an error, the Error is in the BlogActivity Class
"showData(getIntent().getExtras().getParcelable(EXTRAS_BLOG));"(java.lang.NullPointerException).
This is BlogActivity Class:
public class BlogActivity extends AppCompatActivity{
private static final String EXTRAS_BLOG = "EXTRAS_BLOG";
private TextView textTitle;
private TextView textDate;
private TextView textAuthor;
private TextView textRating;
private TextView textDescription;
private TextView textViews;
private RatingBar ratingBar;
private ImageView imageAvatar;
private ImageView imageMain;
private ImageView imageBack;
private ProgressBar progressBar;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_blogpage);
imageMain = findViewById(R.id.yemenImg);
imageAvatar = findViewById(R.id.yemenAvatar);
imageBack = findViewById(R.id.imageBack);
imageBack.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View view)
{
new Handler().postDelayed(new Runnable()
{
#Override
public void run()
{
Intent myInt = new Intent(getApplicationContext(),MainActivity.class);
startActivity(myInt);
}
},2);
}
});
textDate = findViewById(R.id.dateYemen);
textTitle = findViewById(R.id.textTitle);
textAuthor = findViewById(R.id.yemenAuthor);
textRating = findViewById(R.id.textRating);
textViews = findViewById(R.id.textViews);
textDescription = findViewById(R.id.textDescription);
ratingBar = findViewById(R.id.ratingBar);
progressBar = findViewById(R.id.progressBar);
showData(getIntent().getExtras().getParcelable(EXTRAS_BLOG));
}
/*private void loadData()
{
BlogHttpClient.INSTANCE.loadBlogArticles(new BlogArticlesCallback() {
#Override
public void onSuccess(final List<Blog> blogList) {
runOnUiThread(new Runnable() {
#Override
public void run() {
showData(blogList.get(0));
}
});
}
#Override
public void onError() {
runOnUiThread(new Runnable() {
#Override
public void run() {
showErrorSnackbar();
}
});
}
});
}*/
private void showData(Blog blog)
{
progressBar.setVisibility(View.GONE);
textTitle.setText(blog.getTitle());
textDate.setText(blog.getDate());
textAuthor.setText(blog.getAuthor().getName());
textRating.setText(String.valueOf(blog.getRating()));
textViews.setText(String.format("(%d views)", blog.getViews()));
textDescription.setText(blog.getDescription());
textDescription.setText(Html.fromHtml(blog.getDescription(),Html.FROM_HTML_MODE_COMPACT));
ratingBar.setRating(blog.getRating());
ratingBar.setVisibility(View.VISIBLE);
imageBack.setImageResource(R.drawable.ic_baseline_arrow_back_24);
Glide.with(this)
.load(blog.getImage())
.transition(DrawableTransitionOptions.withCrossFade())
.into(imageMain);
Glide.with(this)
.load(blog.getAuthor().getAvatar())
.transform(new CircleCrop())
.transition(DrawableTransitionOptions.withCrossFade())
.into(imageAvatar);
}
/*private void showErrorSnackbar()
{
View rootView = findViewById(android.R.id.content);
Snackbar snackbar = Snackbar.make(rootView,"Error during loading blog articles",
Snackbar.LENGTH_INDEFINITE);
snackbar.setActionTextColor(Color.parseColor("#e0af1f"));
snackbar.setAction("Retry", v -> {
snackbar.dismiss();
});
snackbar.show();
}*/
public static void startBlogDetailsActivity(Activity activity, Blog blog) {
Intent intent = new Intent(activity, BlogActivity.class);
intent.putExtra(EXTRAS_BLOG, blog);
activity.startActivity(intent);
}
Blog Class:
public class Blog implements Parcelable {
private String id;
private Author author;
private String title;
private String date;
private String image;
private String description;
private int views;
private float rating;
protected Blog(Parcel in) {
id = in.readString();
title = in.readString();
date = in.readString();
image = in.readString();
description = in.readString();
views = in.readInt();
rating = in.readFloat();
author = in.readParcelable(Author.class.getClassLoader());
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(id);
dest.writeString(title);
dest.writeString(date);
dest.writeString(image);
dest.writeString(description);
dest.writeInt(views);
dest.writeFloat(rating);
dest.writeParcelable(author, 0);
}
#Override
public int describeContents() {
return 0;
}
public static final Creator<Blog> CREATOR = new Creator<Blog>() {
#Override
public Blog createFromParcel(Parcel in) {
return new Blog(in);
}
#Override
public Blog[] newArray(int size) {
return new Blog[size];
}
};
public String getTitle() {
return title;
}
public String getDate() {
return date;
}
public String getImage() {
return image;
}
public String getDescription() {
return description;
}
public int getViews() {
return views;
}
public float getRating() {
return rating;
}
public Author getAuthor() {
return author;
}
public void setAuthor(Author author) {
this.author = author;
}
public String getId() {
return id;
}
#Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Blog blog = (Blog) o;
return views == blog.views &&
Float.compare(blog.rating, rating) == 0 &&
Objects.equals(id, blog.id) &&
Objects.equals(author, blog.author) &&
Objects.equals(title, blog.title) &&
Objects.equals(date, blog.date) &&
Objects.equals(image, blog.image) &&
Objects.equals(description, blog.description);
}
#Override
public int hashCode() {
return Objects.hash(id, author, title, date, image, description, views, rating);
}
This is Main Activity Class:
public class MainActivity extends AppCompatActivity {
private MainAdapter adapter;
private SwipeRefreshLayout refreshLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
adapter = new MainAdapter(blog ->
BlogActivity.startBlogDetailsActivity(this, blog));
RecyclerView recyclerView = findViewById(R.id.recylerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(adapter);
refreshLayout = findViewById(R.id.refresh);
refreshLayout.setOnRefreshListener(this::loadData);
loadData();
}
private void loadData()
{
refreshLayout.setRefreshing(true);
BlogHttpClient.INSTANCE.loadBlogArticles(new BlogArticlesCallback() {
#Override
public void onSuccess(final List<Blog> blogList) {
runOnUiThread(new Runnable() {
#Override
public void run() {
refreshLayout.setRefreshing(false);
adapter.submitList(blogList);
}
});
}
#Override
public void onError() {
runOnUiThread(new Runnable() {
#Override
public void run() {
refreshLayout.setRefreshing(false);
showErrorSnackbar();
}
});
}
});
}
private void showErrorSnackbar() {
View rootView = findViewById(android.R.id.content);
Snackbar snackbar = Snackbar.make(rootView,"Error during loading blog articles",
Snackbar.LENGTH_INDEFINITE);
snackbar.setActionTextColor(Color.parseColor("#e0af1f"));
snackbar.setAction("Retry", v -> {
loadData();
snackbar.dismiss();
});
snackbar.show();
}
This is MainAdapter Class:
public class MainAdapter extends ListAdapter<Blog, MainAdapter.MainViewHolder>{
public interface OnItemClickListener{
void onItemClicked(Blog blog);
}
private OnItemClickListener clickListener;
public MainAdapter(OnItemClickListener clickListener){
super(DIFF_CALLBACK);
this.clickListener = clickListener;
}
#NonNull
#Override
public MainAdapter.MainViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType)
{
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.activity_listlayout,parent,false);
return new MainViewHolder(view, clickListener);
}
#Override
public void onBindViewHolder(#NonNull MainAdapter.MainViewHolder holder, int position)
{
holder.bindTo(getItem(position));
}
static class MainViewHolder extends RecyclerView.ViewHolder
{
private TextView textTitle;
private TextView textDate;
private ImageView imageAvatar;
private Blog blog;
public MainViewHolder(#NonNull View itemView, OnItemClickListener listener)
{
super(itemView);
itemView.setOnClickListener(view -> listener.onItemClicked(blog));
textTitle = itemView.findViewById(R.id.textTitle);
textDate = itemView.findViewById(R.id.textDate);
imageAvatar = itemView.findViewById(R.id.imageAvatar);
}
void bindTo(Blog blog)
{
textTitle.setText(blog.getTitle());
textDate.setText(blog.getDate());
Glide.with(itemView)
.load(blog.getAuthor().getAvatar())
.transform(new CircleCrop())
.transition(DrawableTransitionOptions.withCrossFade())
.into(imageAvatar);
}
}
private static final DiffUtil.ItemCallback<Blog> DIFF_CALLBACK =
new DiffUtil.ItemCallback<Blog>()
{
#Override
public boolean areItemsTheSame(#NonNull Blog oldItem, #NonNull Blog newItem)
{
return oldItem.getId().equals(newItem.getId());
}
#Override
public boolean areContentsTheSame(#NonNull Blog oldItem, #NonNull Blog newItem)
{
return oldItem.equals(newItem);
}
};
You may set value to blog variable in MainViewHolder.
Add this line to your bindTo() method body:
this.blog = blog
This is the code for the nested recycler view.
If I add data using the push() method, i get the Nested RecycleView with Firebase this error:
Expected a List while deserializing, but got a class java.util.HashMap
AlertDialog dialog;
IFirebaseLoadListener iFirebaseLoadListener;
RecyclerView my_recycler_view;
DatabaseReference myData;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myData= FirebaseDatabase.getInstance().getReference("MyData");
dialog= new SpotsDialog.Builder().setContext(this).build();
iFirebaseLoadListener = this;
// view
my_recycler_view= (RecyclerView)findViewById(R.id.my_recycler_view);
my_recycler_view.setHasFixedSize(true);
my_recycler_view.setLayoutManager(new LinearLayoutManager(this));
load data
getFirebaseData();
}
private void getFirebaseData() {
dialog.show();
myData.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
List<itemGroup> itemGroups= new ArrayList<>();
for(DataSnapshot groupSnapshot: dataSnapshot.getChildren())
{
itemGroup itemGroup= new itemGroup();
///
Firebase instance code
///
itemGroup.setHeaderTitle(groupSnapshot.child("headerTitle").getValue(true).toString());
GenericTypeIndicator<ArrayList<itemData>> genericTypeIndicator= new GenericTypeIndicator<ArrayList<itemData>>(){} ;
itemGroup.setListItem(groupSnapshot.child("listItem").child(key).getValue(genericTypeIndicator));
itemGroups.add(itemGroup);
}
iFirebaseLoadListener.onFirebaseLoadSuccess(itemGroups);
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
iFirebaseLoadListener.onFirebaseLoadFailed(databaseError.getMessage());
}
});
}
#Override
public void onFirebaseLoadSuccess(List<itemGroup> itemGroupList) {
MyItemGroupAdapter adapter = new MyItemGroupAdapter(this,itemGroupList);
my_recycler_view.setAdapter(adapter);
dialog.dismiss();
}
#Override
public void onFirebaseLoadFailed(String message) {
Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
}
public class itemData {
private String name ,image;
public itemData() {
}
public itemData(String name, String image) {
this.name = name;
this.image = image;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
}
public class itemGroup {
private String headerTitle;
private ArrayList<itemData> listItem;
public itemGroup() {
}
public itemGroup(String headerTitle, ArrayList<itemData> listItem) {
this.headerTitle = headerTitle;
this.listItem = listItem;
}
public String getHeaderTitle() {
return headerTitle;
}
public void setHeaderTitle(String headerTitle) {
this.headerTitle = headerTitle;
}
public ArrayList<itemData> getListItem() {
return listItem;
}
public void setListItem(ArrayList<itemData> listItem) {
this.listItem = listItem;
}
}
public class MyItemAdapter extends RecyclerView.Adapter<MyItemAdapter.MyViewHolder> {
private Context context;
private List<itemData> itemDataList;
public MyItemAdapter(Context context, List<itemData> itemDataList) {
this.context = context;
this.itemDataList = itemDataList;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View itemView =
LayoutInflater.from(context).inflate(R.layout.layout_item,viewGroup,false);
return new MyViewHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull MyViewHolder myViewHolder, int i) {
myViewHolder.txt_item_titles.setText(itemDataList.get(i).getName());
Picasso.get().load(itemDataList.get(i).getImage()).into(myViewHolder.img_item);
myViewHolder.setiItemClickListener(new IItemClickListener() {
#Override
public void onItemClickListener(View view, int i) {
Toast.makeText(context, ""+ itemDataList.get(i).getName(),
Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return (itemDataList != null ? itemDataList.size() : 0);
}
public class MyViewHolder extends RecyclerView.ViewHolder implements
View.OnClickListener {
TextView txt_item_titles;
ImageView img_item;
IItemClickListener iItemClickListener;
public void setiItemClickListener(IItemClickListener iItemClickListener) {
this.iItemClickListener = iItemClickListener;
}
public MyViewHolder (View itemView ){
super(itemView);
txt_item_titles= (TextView)itemView.findViewById(R.id.tvTitle);
img_item= (ImageView) itemView.findViewById(R.id.itemImage);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
iItemClickListener.onItemClickListener(v,getAdapterPosition());
}
}
}
public class MyItemGroupAdapter extends
RecyclerView.Adapter<MyItemGroupAdapter.MyViewHolder> {
private Context context;
private List<itemGroup> dataList;
public MyItemGroupAdapter(Context context, List<itemGroup> dataList) {
this.context = context;
this.dataList = dataList;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View itemView =
LayoutInflater.from(context).inflate(R.layout.layout_group,viewGroup,false);
return new MyViewHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull final MyViewHolder myViewHolder, int i) {
myViewHolder.item_title.setText(dataList.get(i).getHeaderTitle());
List<itemData> itemData = dataList.get(i).getListItem();
MyItemAdapter itemListAdapter=new MyItemAdapter(context,itemData);
myViewHolder.recycler_view_item_list.setHasFixedSize(true);
myViewHolder.recycler_view_item_list.setLayoutManager(new
LinearLayoutManager(context,LinearLayoutManager.HORIZONTAL,false));
myViewHolder.recycler_view_item_list.setAdapter(itemListAdapter);
myViewHolder.recycler_view_item_list.setNestedScrollingEnabled(false);
// btn more
myViewHolder.btn_more.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "Button More "+ myViewHolder.item_title.getText(),
Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return (dataList != null ? dataList.size() : 0);
}
public class MyViewHolder extends RecyclerView.ViewHolder{
TextView item_title ;
RecyclerView recycler_view_item_list;
Button btn_more;
public MyViewHolder (View itemView ){
super (itemView);
item_title= (TextView) itemView.findViewById(R.id.itemTitle);
btn_more= (Button)itemView.findViewById(R.id.btMore);
recycler_view_item_list=
(RecyclerView)itemView.findViewById(R.id.recycler_view_list);
}
}
}
This happens when you try to have a structure like this in the database:
"list": {
"-Nasdueqriyew": "First value",
"-Nberqiy39esd": "Second value",
"-Nc3hadsiuhad": "Third value"
}
And then try to map it to a List or array in your Java class.
The JSON structure is not a list, because it was pairs of keys and values, which in Java translates to:
Map<String, Object>
So most likely, the List<itemData> in your code needs to be a Map<String, itemData>.
myadapter.java
'how to open link in my WebActivity.java through the myadapter.java'
public class myadapter extends FirebaseRecyclerAdapter<model,myadapter.myViewHolder> implements View.OnClickListener{
public myadapter(#NonNull FirebaseRecyclerOptions<model> options) {
super(options);
}
#Override
protected void onBindViewHolder(#NonNull myViewHolder holder, int position, #NonNull model model) {
holder.name.setText(model.getName());
holder.dcr.setText(model.getDcr());
Glide.with(holder.img.getContext()).load(model.getImgurl()).into(holder.img);
}
#Override
public void onClick(View view) {
Context context = view.getContext();
view.getContext().startActivity(new Intent(view.getContext(),WebActivity.class));
Intent intent = new Intent();
context.startActivity(intent);
}
#NonNull
#Override
public myViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_product,parent,false);
return new myViewHolder(view);
}
class myViewHolder extends RecyclerView.ViewHolder{
ImageView img;
TextView name,dcr;
CardView link;
Context context;
public myViewHolder(#NonNull View itemView) {
super(itemView);
img=(ImageView)itemView.findViewById(R.id.image);
name=(TextView)itemView.findViewById(R.id.title);
dcr=(TextView)itemView.findViewById(R.id.dcrtxt);
link=(CardView) itemView.findViewById(R.id.cardview);
}
}
}
model.java
'this is my model class please help me'
public class model {
String dcr,imgurl,name,link;
model()
{
}
public model(String dcr, String imgurl, String name) {
this.dcr = dcr;
this.imgurl = imgurl;
this.name = name;
this.name = link;
}
public String getDcr() {
return dcr;
}
public void setDcr(String dcr) {
this.dcr = dcr;
}
public String getImgurl() {
return imgurl;
}
public void setImgurl(String imgurl) {
this.imgurl = imgurl;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getLink() {
return link;
}
public void setLink(String link) {
this.name = link;
}
}
WebActivity.java
'this is simple webactivity for loading urls'
public class WebActivity extends AppCompatActivity {
private WebView webView;
String url = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web);
webView = findViewById(R.id.myweb);
url = getIntent().getStringExtra("URL_NAME");
webView.loadUrl(url);
}
}
This is my RecyclerView Adaptor Class
public class TodoAdaptor extends RecyclerView.Adapter<TodoAdaptor.SingleTodoView> {
private CheckBox checkbox;
private TextView title, dueDate;
private Context context;
private ArrayList<SingleTodo> todoList;
private onItemCLickListener itemCLickListener;
public TodoAdaptor(Context context, ArrayList<SingleTodo> todoList, onItemCLickListener onItemClickListener) {
this.context = context;
this.todoList = todoList;
this.itemCLickListener = onItemClickListener;
}
#NonNull
#Override
public SingleTodoView onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.single_todo, parent, false);
return new SingleTodoView(v, itemCLickListener);
}
#Override
public void onBindViewHolder(#NonNull SingleTodoView holder, int position) {
SingleTodo singleTodo = todoList.get(position);
checkbox.setChecked(singleTodo.isComplete());
title.setText(singleTodo.getTitle());
if (singleTodo.isComplete()) {
title.setPaintFlags(title.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
Toast.makeText(context, "IsCompleted", Toast.LENGTH_SHORT).show();
} else {
title.setPaintFlags(title.getPaintFlags() & (~Paint.STRIKE_THRU_TEXT_FLAG));
Toast.makeText(context, "Not IsCompleted", Toast.LENGTH_SHORT).show();
}
if (singleTodo.getDueDate().isEmpty()) {
dueDate.setVisibility(View.GONE);
} else {
dueDate.setText(singleTodo.getDueDate());
}
}
#Override
public int getItemCount() {
return todoList.size();
}
class SingleTodoView extends RecyclerView.ViewHolder {
private SingleTodoView(#NonNull View itemView, final onItemCLickListener itemCLickListener) {
super(itemView);
checkbox = itemView.findViewById(R.id.todo_list_completed_checkbox);
title = itemView.findViewById(R.id.todo_list_title);
dueDate = itemView.findViewById(R.id.todo_list_due_date);
title.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
itemCLickListener.onTextClickListener(getAdapterPosition());
}
});
checkbox.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
itemCLickListener.onCheckboxClickListener(getAdapterPosition());
}
});
}
}
public interface onItemCLickListener {
void onTextClickListener(int position);
void onCheckboxClickListener(int position);
}
}
This is My Adaptor
todoAdaptor = new TodoAdaptor(this, singleTodoArrayList, new TodoAdaptor.onItemCLickListener() {
#Override
public void onTextClickListener(int position) {
singleTodo = singleTodoArrayList.get(position);
singleTodo.setTitle("This is Test");
singleTodoArrayList.set(position, singleTodo);
todoAdaptor.notifyItemChanged(position);
}
#Override
public void onCheckboxClickListener(int position) {
singleTodo = singleTodoArrayList.get(position);
singleTodo.setComplete(!singleTodo.isComplete());
singleTodoArrayList.set(position, singleTodo);
todoAdaptor.notifyItemChanged(position);
}
});
and This is my SingleTodo Class
package com.example.simpletodo.classes;
public class SingleTodo {
private int id;
private String title;
private String dueDate;
private boolean isComplete;
public SingleTodo(int id, String title, String dueDate, boolean isComplete) {
this.id = id;
this.title = title;
this.dueDate = dueDate;
this.isComplete = isComplete;
}
public int getId() {
return id;
}
public String getTitle() {
return title;
}
public String getDueDate() {
return dueDate;
}
public boolean isComplete() {
return isComplete;
}
public void setId(int id) {
this.id = id;
}
public void setTitle(String title) {
this.title = title;
}
public void setDueDate(String dueDate) {
this.dueDate = dueDate;
}
public void setComplete(boolean complete) {
isComplete = complete;
}
}
Whenever I check the checkbox, Text of that item should paint Strikethrough and Its not working as Expected
I have 3 Items in the list, when i click checkbox Item get Checked and Text Strikethrough works but when i again click checkbox checkbox stay checked (although Object is being Updated as it should be) and strikethrought text revert to normal, and i have to click checkbox twice again for check box to get unchecked
other issue is that when i checked on item and then i try to check other item, Current Item text get replaced by one of the other checked item Text.
Images :
Default:
When i click the Checkbox Once:
When i Click the Checkbox Again:
When i Checked multiple Items one by one(I have not changed position of any item before checking they was in default order and after checking --in order-- this is what i get)
Any Help is Appreciated. I just want my code to work as Expected.
I found the Solution from this Question
I had to change my Adaptor Class. I Declared Views inside my view holder class and onBindViewHolder, i am using first parameter (holder) to get my Views
public class TodoAdaptor extends RecyclerView.Adapter<TodoAdaptor.SingleTodoView> {
private boolean darkTheme;
private Context context;
private ArrayList<SingleTodo> todoList;
private onItemCLickListener itemCLickListener;
public TodoAdaptor(Context context, ArrayList<SingleTodo> todoList, boolean darkTheme, onItemCLickListener onItemClickListener) {
this.darkTheme = darkTheme;
this.context = context;
this.todoList = todoList;
this.itemCLickListener = onItemClickListener;
}
#NonNull
#Override
public SingleTodoView onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.single_todo, parent, false);
return new SingleTodoView(v, itemCLickListener);
}
#Override
public void onBindViewHolder(#NonNull SingleTodoView holder, int position) {
SingleTodo singleTodo = todoList.get(position);
holder.checkbox.setChecked(singleTodo.isComplete());
holder.title.setText(singleTodo.getTitle());
if (singleTodo.isComplete()) {
holder.title.setPaintFlags(holder.title.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
} else {
holder.title.setPaintFlags(holder.title.getPaintFlags() & (~Paint.STRIKE_THRU_TEXT_FLAG));
}
if (singleTodo.getDueDate().isEmpty()) {
holder.dueDate.setVisibility(View.GONE);
} else {
holder.dueDate.setVisibility(View.VISIBLE);
holder.dueDate.setText(singleTodo.getDueDate());
}
}
#Override
public int getItemCount() {
return todoList.size();
}
class SingleTodoView extends RecyclerView.ViewHolder {
private CheckBox checkbox;
private TextView title, dueDate;
private SingleTodoView(#NonNull View itemView, final onItemCLickListener itemCLickListener) {
super(itemView);
checkbox = itemView.findViewById(R.id.todo_list_completed_checkbox);
title = itemView.findViewById(R.id.todo_list_title);
dueDate = itemView.findViewById(R.id.todo_list_due_date);
if (darkTheme) {
title.setTextColor(context.getResources().getColor(R.color.colorLightGray));
dueDate.setTextColor(context.getResources().getColor(R.color.colorLightGray));
} else {
title.setTextColor(context.getResources().getColor(R.color.colorBlack));
dueDate.setTextColor(context.getResources().getColor(R.color.colorBlack));
}
title.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
itemCLickListener.onTextClickListener(getAdapterPosition());
}
});
checkbox.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
itemCLickListener.onCheckboxClickListener(getAdapterPosition());
}
});
}
}
public interface onItemCLickListener {
void onTextClickListener(int position);
void onCheckboxClickListener(int position);
}
}
Firebase database screenshot link
I Cannot retrieve the data in a device this is wallpaper app
I have updated the google play services also but nothing happens.
I have also given the internet permission.
I have also tested on the emulator and a physical device.
Firebase database screenshot link on top.
CategoryFragment.java
public class CategoryFragment extends Fragment {
FirebaseDatabase database;
DatabaseReference categoryBackground;
//Firebase UI adpter
FirebaseRecyclerOptions<CategoryItem> options;
FirebaseRecyclerAdapter<CategoryItem, CategoryViewHolder> adapter;
//View
RecyclerView recyclerView;
private static CategoryFragment INSTANCE=null;
public CategoryFragment() {
database = FirebaseDatabase.getInstance();
categoryBackground =
database.getReference(Common.STR_CATEGORY_BACKGROUND);
options = new FirebaseRecyclerOptions.Builder<CategoryItem>()
.setQuery(categoryBackground, CategoryItem.class)
.build();
adapter = new FirebaseRecyclerAdapter<CategoryItem, CategoryViewHolder>
(options) {
#Override
protected void onBindViewHolder(#NonNull final CategoryViewHolder
holder, int position, #NonNull final CategoryItem model) {
Picasso.with(getActivity())
.load(model.getImageLink())
.networkPolicy(NetworkPolicy.OFFLINE)
.into(holder.background_image, new Callback() {
#Override
public void onSuccess() {
}
#Override
public void onError() {
//Try again if cache failed to load
Picasso.with(getActivity())
.load(model.getImageLink())
.error(R.drawable.ic_terrain_black_24dp)
.into(holder.background_image, new
Callback() {
#Override
public void onSuccess() {
}
#Override
public void onError() {
Log.e("ERROR_MSU", "Couldn't
fetch image");
}
});
}
});
holder.category_name.setText(model.getName());
holder.setItemClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position) {
//Code later for detail category
}
});
}
#Override
public CategoryViewHolder onCreateViewHolder(ViewGroup parent, int
viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.layout_category_item,parent,false);
return new CategoryViewHolder(itemView);
}
};
}
public static CategoryFragment getInstance()
{
if(INSTANCE == null)
INSTANCE = new CategoryFragment();
return INSTANCE;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_category, container,
false);
recyclerView = (RecyclerView)view.findViewById(R.id.recycler_category);
recyclerView.setHasFixedSize(true);
GridLayoutManager gridLayoutManager = new
GridLayoutManager(getActivity(),2);
recyclerView.setLayoutManager(gridLayoutManager);
setCategory();
return view;
}
private void setCategory() {
adapter.startListening();
recyclerView.setAdapter(adapter);
}
#Override
public void onStart() {
super.onStart();
if (adapter!=null)
adapter.startListening();
}
#Override
public void onStop() {
if (adapter!=null)
adapter.stopListening();
super.onStop();
}
#Override
public void onResume() {
super.onResume();
if (adapter!=null)
adapter.stopListening();
}
}
CategoryItem.java
public class CategoryItem {
public String name;
public String imageLink;
public CategoryItem() {
}
public CategoryItem(String name, String imageLink){
this.name = name;
this.imageLink = imageLink;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImageLink() {
return imageLink;
}
public void setImageLink(String imageLink) {
this.imageLink = imageLink;
}
}
CategoryViewHolder
public class CategoryViewHolder extends RecyclerView.ViewHolder implements
View.OnClickListener {
public TextView category_name;
public ImageView background_image;
ItemClickListener itemClickListener;
public void setItemClickListener(ItemClickListener itemClickListener) {
this.itemClickListener = itemClickListener;
}
public CategoryViewHolder(View itemView) {
super(itemView);
background_image = (ImageView)itemView.findViewById(R.id.image);
category_name = (TextView)itemView.findViewById(R.id.name);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v){
itemClickListener.onClick(v,getAdapterPosition());
}
}