Develop Reference

77/5000 RecyclerView shows only duplicates of the same item from the firestore database [duplicate]

Firebase image
Model class
public class Category
{
private String Name;
private String Image;
public Category(String name, String image) {
Name = name;
Image = image;
}
public Category() {
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getImage() {
return Image;
}
public void setImage(String image) {
Image = image;
}
}
Activity class
public class Home extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
RecyclerView recyclerView;
RecyclerView.LayoutManager layoutManager;
FirebaseDatabase database;
DatabaseReference reference;
FirebaseStorage storage;
StorageReference storageReference;
//Add new menu
MaterialEditText edtTxtName;
Button selectImage;
Button uploadImage;
//Adding new category
Category newCategory;
Uri savedImageUri;
private final int PICK_IMAGE_REQUEST=71;
MaterialEditText edtTxtNewCategoryName;
FloatingActionButton fab;
FirebaseRecyclerAdapter<Category,MenuViewHolder> recyclerAdapter;
TextView userName;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
edtTxtNewCategoryName=findViewById(R.id.edt_txt_new_item_name);
Toolbar toolbar = findViewById(R.id.toolbar);
toolbar.setTitle("Menu Mangement");
setSupportActionBar(toolbar);
fab =findViewById(R.id.fab);
//Firebase init
database=FirebaseDatabase.getInstance();
reference=database.getReference("Category");
storage=FirebaseStorage.getInstance();
storageReference=storage.getReference();
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showDailog();
}
});
DrawerLayout drawer =findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
//Setting header name
/* View view=navigationView.getHeaderView(0);
userName = view.findViewById(R.id.username);
userName.setText(Common.currentUser.getName());*/
//View init
recyclerView=findViewById(R.id.recycler_menu);
layoutManager=new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
loadMenu();
}
private void selectImage() {
Intent intent=new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent,PICK_IMAGE_REQUEST);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if(requestCode==PICK_IMAGE_REQUEST && resultCode==Activity.RESULT_OK
&& data!=null && data.getData()!=null)
{
savedImageUri=data.getData();//getting uri
selectImage.setText("Image Selected !");
}
}
private void uploadImage() {
final ProgressDialog progressDialog=new ProgressDialog(this);
progressDialog.setMessage("Uploading Image");
progressDialog.show();
String image= UUID.randomUUID().toString();
final StorageReference imageFolder=storageReference.child("images/"+image);
imageFolder.putFile(savedImageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
progressDialog.dismiss();
Toast.makeText(Home.this, "Uploaded", Toast.LENGTH_SHORT).show();
imageFolder.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>()
{
#Override
public void onSuccess(Uri uri)
{
newCategory=new Category(edtTxtName.getText().toString(),uri.toString());
Toast.makeText(Home.this, ""+uri.toString(), Toast.LENGTH_SHORT).show();
}
});
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
progressDialog.dismiss();
Toast.makeText(Home.this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
}
}).addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
#Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
double progress=(100.0 * taskSnapshot.getBytesTransferred()
/ taskSnapshot.getTotalByteCount());
progressDialog.setMessage("Uploaded "+progress+" %");
}
});
}
private void showDailog() {
final AlertDialog.Builder alertDailog=new AlertDialog.Builder(this);
alertDailog.setTitle("Add new Category");
alertDailog.setMessage("Please fill all the fields");
LayoutInflater inflater=this.getLayoutInflater();
View view=inflater.inflate(R.layout.add_new_menu_layout,null);
edtTxtName=view.findViewById(R.id.edt_txt_new_item_name);
alertDailog.setView(view);
alertDailog.setIcon(R.drawable.ic_shopping_cart_black_24dp);
alertDailog.setPositiveButton("Add", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
if(newCategory!=null){
reference.push().setValue(newCategory);
}
}
});
alertDailog.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDailog.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDailog.show();
}
private void loadMenu()
{
recyclerAdapter=new FirebaseRecyclerAdapter<Category, MenuViewHolder>(
Category.class,R.layout.menu_layout,
MenuViewHolder.class,reference) {
#Override
protected void populateViewHolder(MenuViewHolder viewHolder, final Category model, int position)
{
viewHolder.menuName.setText(model.getName());
Picasso.get().load(model.getImage()).into(viewHolder.imageView);
viewHolder.setItemClickListner(new ItemClickListner() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
//Getting menuId
Intent intent=new Intent(Home.this,FoodList.class);
intent.putExtra("CategoryId",recyclerAdapter.getRef(position).getKey());
startActivity(intent);
}
});
}
};
recyclerAdapter.notifyDataSetChanged();//notifiy us if data has been changed.
recyclerView.setAdapter(recyclerAdapter);
}
In activity class,firebase adapter is implemented.by refrence of firebase database ,images are loading with only id "-LO061DOhjG2hVZlqY79" but with id's like '01' '02' are not loading
Adapter is loading images very slow
Output of this code
Help will highly appreciated

Because you are using private fields and public getters and setters, the name of your fields in your Category class, doesn't matter. If you want to use different names in your class than in the database, you might use an annotation called PropertyName in front of the getter.
images are loading with the only id "-LO061DOhjG2hVZlqY79" but with id's like '01' '02' are not loading
As I see in your screenshot, the image of the first element "01" with the name "Finger Foods" is displayed correctly in the UI. So it doesn't matter if the children have a key that looks like this 01, 02, or -LO061DOhjG2hVZlqY79 the data should be displayed. As a matter of fact, it is displayed, the name of the next item, "Western Soups" is displayed, so most likely the problem is with your URL. So please make sure that the URL actually exists and has it contains a valid image.

Images not loading from URL by Picasso from Firebase Database

Firebase image
Model class
public class Category
{
private String Name;
private String Image;
public Category(String name, String image) {
Name = name;
Image = image;
}
public Category() {
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getImage() {
return Image;
}
public void setImage(String image) {
Image = image;
}
}
Activity class
public class Home extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
RecyclerView recyclerView;
RecyclerView.LayoutManager layoutManager;
FirebaseDatabase database;
DatabaseReference reference;
FirebaseStorage storage;
StorageReference storageReference;
//Add new menu
MaterialEditText edtTxtName;
Button selectImage;
Button uploadImage;
//Adding new category
Category newCategory;
Uri savedImageUri;
private final int PICK_IMAGE_REQUEST=71;
MaterialEditText edtTxtNewCategoryName;
FloatingActionButton fab;
FirebaseRecyclerAdapter<Category,MenuViewHolder> recyclerAdapter;
TextView userName;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
edtTxtNewCategoryName=findViewById(R.id.edt_txt_new_item_name);
Toolbar toolbar = findViewById(R.id.toolbar);
toolbar.setTitle("Menu Mangement");
setSupportActionBar(toolbar);
fab =findViewById(R.id.fab);
//Firebase init
database=FirebaseDatabase.getInstance();
reference=database.getReference("Category");
storage=FirebaseStorage.getInstance();
storageReference=storage.getReference();
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showDailog();
}
});
DrawerLayout drawer =findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
//Setting header name
/* View view=navigationView.getHeaderView(0);
userName = view.findViewById(R.id.username);
userName.setText(Common.currentUser.getName());*/
//View init
recyclerView=findViewById(R.id.recycler_menu);
layoutManager=new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
loadMenu();
}
private void selectImage() {
Intent intent=new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent,PICK_IMAGE_REQUEST);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if(requestCode==PICK_IMAGE_REQUEST && resultCode==Activity.RESULT_OK
&& data!=null && data.getData()!=null)
{
savedImageUri=data.getData();//getting uri
selectImage.setText("Image Selected !");
}
}
private void uploadImage() {
final ProgressDialog progressDialog=new ProgressDialog(this);
progressDialog.setMessage("Uploading Image");
progressDialog.show();
String image= UUID.randomUUID().toString();
final StorageReference imageFolder=storageReference.child("images/"+image);
imageFolder.putFile(savedImageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
progressDialog.dismiss();
Toast.makeText(Home.this, "Uploaded", Toast.LENGTH_SHORT).show();
imageFolder.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>()
{
#Override
public void onSuccess(Uri uri)
{
newCategory=new Category(edtTxtName.getText().toString(),uri.toString());
Toast.makeText(Home.this, ""+uri.toString(), Toast.LENGTH_SHORT).show();
}
});
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
progressDialog.dismiss();
Toast.makeText(Home.this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
}
}).addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
#Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
double progress=(100.0 * taskSnapshot.getBytesTransferred()
/ taskSnapshot.getTotalByteCount());
progressDialog.setMessage("Uploaded "+progress+" %");
}
});
}
private void showDailog() {
final AlertDialog.Builder alertDailog=new AlertDialog.Builder(this);
alertDailog.setTitle("Add new Category");
alertDailog.setMessage("Please fill all the fields");
LayoutInflater inflater=this.getLayoutInflater();
View view=inflater.inflate(R.layout.add_new_menu_layout,null);
edtTxtName=view.findViewById(R.id.edt_txt_new_item_name);
alertDailog.setView(view);
alertDailog.setIcon(R.drawable.ic_shopping_cart_black_24dp);
alertDailog.setPositiveButton("Add", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
if(newCategory!=null){
reference.push().setValue(newCategory);
}
}
});
alertDailog.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDailog.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDailog.show();
}
private void loadMenu()
{
recyclerAdapter=new FirebaseRecyclerAdapter<Category, MenuViewHolder>(
Category.class,R.layout.menu_layout,
MenuViewHolder.class,reference) {
#Override
protected void populateViewHolder(MenuViewHolder viewHolder, final Category model, int position)
{
viewHolder.menuName.setText(model.getName());
Picasso.get().load(model.getImage()).into(viewHolder.imageView);
viewHolder.setItemClickListner(new ItemClickListner() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
//Getting menuId
Intent intent=new Intent(Home.this,FoodList.class);
intent.putExtra("CategoryId",recyclerAdapter.getRef(position).getKey());
startActivity(intent);
}
});
}
};
recyclerAdapter.notifyDataSetChanged();//notifiy us if data has been changed.
recyclerView.setAdapter(recyclerAdapter);
}
In activity class,firebase adapter is implemented.by refrence of firebase database ,images are loading with only id "-LO061DOhjG2hVZlqY79" but with id's like '01' '02' are not loading
Adapter is loading images very slow
Output of this code
Help will highly appreciated

Because you are using private fields and public getters and setters, the name of your fields in your Category class, doesn't matter. If you want to use different names in your class than in the database, you might use an annotation called PropertyName in front of the getter.
images are loading with the only id "-LO061DOhjG2hVZlqY79" but with id's like '01' '02' are not loading
As I see in your screenshot, the image of the first element "01" with the name "Finger Foods" is displayed correctly in the UI. So it doesn't matter if the children have a key that looks like this 01, 02, or -LO061DOhjG2hVZlqY79 the data should be displayed. As a matter of fact, it is displayed, the name of the next item, "Western Soups" is displayed, so most likely the problem is with your URL. So please make sure that the URL actually exists and has it contains a valid image.

The items not appear in recyclerview

I face a problem when I send a comment, that comment does not appear in RecyclerView, I have to go back and reopen Activity again to see my reply.
BlogSingleActivity.java
public class BlogSingleActivity extends AppCompatActivity {
private String mPost_key = null;
DatabaseReference mDatabase;
private ImageView mBlogSingleImage;
private TextView mBlogSingleTitle;
private TextView mBlogSingleDesc;
private TextView mBlogSingleUsername, mNumbersOfComments;
private TextView mBlogSingleDate;
private DatabaseReference ReplayDatabase;
private RecyclerView mReplayBlogList;
private TextView emptyView;
FirebaseRecyclerAdapter<Blog, BlogViewHolder> mAdapter;
private EditText mReplayText;
private FirebaseAuth mAuth;
private FirebaseUser mCurrentUser;
private DatabaseReference mDatabaseUser;
private Uri mImagUri = null;
private static final int GALLERY_REQUEST = 2;
private StorageReference mStorage;
private ImageButton mselectImage;
Button sendBTN;
private ProgressDialog mProgress;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_blog_single);
mPost_key = getIntent().getExtras().getString("blog_id");
mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");
ReplayDatabase = FirebaseDatabase.getInstance().getReference().child("Replay");
mBlogSingleDesc = findViewById(R.id.singleBlogDesc);
mBlogSingleTitle = findViewById(R.id.post_Tittle);
mBlogSingleImage = findViewById(R.id.singleBlogImage);
mBlogSingleUsername = findViewById(R.id.singleBlogUsername);
mBlogSingleDate = findViewById(R.id.singleBlogDate);
mNumbersOfComments = findViewById(R.id.numberofcomments);
assert getSupportActionBar() != null;
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mReplayBlogList = findViewById(R.id.replay_blog_list);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setReverseLayout(true);
layoutManager.setStackFromEnd(true);
mReplayBlogList.setLayoutManager(layoutManager);
mReplayBlogList.setNestedScrollingEnabled(false);
emptyView = findViewById(R.id.empty_view);
chickitem();
mAuth = FirebaseAuth.getInstance();
mCurrentUser = mAuth.getCurrentUser();
mDatabaseUser = FirebaseDatabase.getInstance().getReference().child("Users").child(mCurrentUser.getUid());
mReplayText = findViewById(R.id.ReplayField);
mStorage = FirebaseStorage.getInstance().getReference();
mselectImage = findViewById(R.id.replayImageSelect);
sendBTN = findViewById(R.id.send_BTN);
getfirebaseData();
mProgress = new ProgressDialog(this);
mselectImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, GALLERY_REQUEST);
}
});
sendBTN.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startReplay();
getfirebaseData();;
disappearKeyboard();
mReplayText.getText().clear();
mselectImage.setImageResource(R.mipmap.add_btn);
mselectImage.setBackgroundColor(getResources().getColor(R.color.image_background_color));
}
});
mDatabase.child(mPost_key).addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
String post_title = (String) dataSnapshot.child("tittle").getValue();
String post_desc = (String) dataSnapshot.child("desc").getValue();
String post_image = (String) dataSnapshot.child("image").getValue();
String post_username = (String) dataSnapshot.child("username").getValue();
Object post_date = dataSnapshot.child("date").getValue();
Blog timeStamp = new Blog();
timeStamp.setDate(post_date);
if (timeStamp.getDate() != null) {
String datee = timeStamp.getDate().toString();
long time = Long.parseLong(datee);
String timeAgo = TimeAgo.getTimeAgo(time);
mBlogSingleDate.setText(timeAgo);
}
mBlogSingleTitle.setText(post_title);
mBlogSingleDesc.setText(post_desc);
mBlogSingleUsername.setText(post_username);
Picasso.with(BlogSingleActivity.this)
.load(post_image)
.into(mBlogSingleImage);
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
private void disappearKeyboard() {
InputMethodManager inputManager =
(InputMethodManager) this.
getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(
this.getCurrentFocus().getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
}
private void startReplay() {
{
final String replay_val = mReplayText.getText().toString().trim();
//send date to firebase database
if (!TextUtils.isEmpty(replay_val) && mImagUri != null) {
mProgress.setMessage("جاري الإرسال....");
mProgress.show();
StorageReference filepath = mStorage.child("Replay_Images").child(mImagUri.getLastPathSegment());
filepath.putFile(mImagUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
if (mAuth.getCurrentUser() != null) {
#SuppressWarnings("VisibleForTests") final Uri downloadUrl = taskSnapshot.getDownloadUrl();
final DatabaseReference newPost = ReplayDatabase.child(mPost_key).push();
mDatabaseUser.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.getValue() != null) {
newPost.child("replayimage").setValue(downloadUrl.toString());
newPost.child("replay").setValue(replay_val);
newPost.child("replaydate").setValue(ServerValue.TIMESTAMP);
newPost.child("uid").setValue(mCurrentUser.getUid());
newPost.child("replayname").setValue(dataSnapshot.child("name").getValue()).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
chickitem();
mAdapter.notifyDataSetChanged();
}
}
});
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
mProgress.dismiss();
}
}
});
} else if ((!TextUtils.isEmpty(replay_val))) {
mProgress.setMessage("جاري الإرسال....");
mProgress.show();
if (mAuth.getCurrentUser() != null) {
final DatabaseReference newPost = ReplayDatabase.child(mPost_key).push();
mDatabaseUser.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.getValue() != null) {
newPost.child("replay").setValue(replay_val);
newPost.child("replaydate").setValue(ServerValue.TIMESTAMP);
newPost.child("uid").setValue(mCurrentUser.getUid());
newPost.child("replayname").setValue(dataSnapshot.child("name").getValue()).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
chickitem();
mAdapter.notifyDataSetChanged();
}
}
});
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
mProgress.dismiss();
}
}
}
}
private void getfirebaseData() {
mAdapter = new FirebaseRecyclerAdapter<Blog, BlogViewHolder>(
Blog.class,
R.layout.replay_row,
BlogViewHolder.class,
ReplayDatabase.child(mPost_key)
) {
#Override
protected void populateViewHolder(final BlogViewHolder viewHolder, final Blog model, int position) {
viewHolder.setReplay(model.getReplay());
viewHolder.setReplayname(model.getReplayname());
viewHolder.setReplaydate(model.getReplaydate());
viewHolder.setReplayimage(getApplicationContext(), model.getReplayimage());
}
};
mReplayBlogList.setAdapter(mAdapter);
}
public static class BlogViewHolder extends RecyclerView.ViewHolder {
View mView;
ImageView replay_imagee;
TextView recive_replay, post_replayname, post_replaydate;
public BlogViewHolder(View itemView) {
super(itemView);
mView = itemView;
}
public void setReplay(String replay) {
recive_replay = mView.findViewById(R.id.replay_text);
recive_replay.setText(replay);
}
public void setReplayname(String replayname) {
post_replayname = mView.findViewById(R.id.replayer_name_field);
post_replayname.setText(replayname);
}
public void setReplaydate(Object relaydate) {
post_replaydate = mView.findViewById(R.id.post_replaydate);
Blog timeStamps = new Blog();
timeStamps.setDate(relaydate);
if (timeStamps.getDate()!=null){
String dateee = timeStamps.getDate().toString();
long times = Long.parseLong(dateee);
String timeAgoo = TimeAgo.getTimeAgo(times);
post_replaydate.setText(timeAgoo);
}
}
public void setReplayimage(final Context ctx, final String replayimage) {
replay_imagee = mView.findViewById(R.id.replay_image);
Picasso.with(ctx).load(replayimage).networkPolicy(NetworkPolicy.OFFLINE).into(replay_imagee, new Callback() {
#Override
public void onSuccess() {
}
#Override
public void onError() {
Picasso.with(ctx).load(replayimage).into(replay_imagee);
}
});
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_REQUEST && resultCode == RESULT_OK) {
Uri imageUri = data.getData();
CropImage.activity(imageUri)
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1, 1)
.start(this);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
mImagUri = result.getUri();
mselectImage.setImageURI(mImagUri);
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}
private void chickitem() {
final AtomicInteger count = new AtomicInteger();
ReplayDatabase.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
long numChildren = dataSnapshot.child(mPost_key).getChildrenCount();
if (numChildren == 0) {
emptyView.setVisibility(View.VISIBLE);
emptyView.setText("لا توجد تعليقات");
mReplayBlogList.setVisibility(View.INVISIBLE);
mNumbersOfComments.setText("لا توجد تعليقات");
} else {
mNumbersOfComments.setText("" + numChildren);
emptyView.setVisibility(View.VISIBLE);
emptyView.setText("التعليقات...");
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
#Override
public void onStart(){
super.onStart();
getfirebaseData();
}
#Override
public void onResume(){
super.onResume();
getfirebaseData();
}
#Override
public boolean onCreateOptionsMenu(Menu menu){
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
The screen looks like .
There are two comments. To see these comment I have to go back and reopen this Activity.

I'm not 100% sure about this, but I think you're missing the mReplayBlogList.notifyDataSetChanged(); after the line mReplayBlogList.setAdapter(mAdapter); in getfirebaseData().
Maybe you could give it a try. Let me know if it solved :)

firebase data using user.getUid

hi guys how can i send a data to firebase when i logging in want to see different info from other accounts now i see the save data that i sent. this is a code:
This is my Activity_category Activity
public class Activity_category extends Activity {
class Layout{
Layout(){
textView2= (TextView)findViewById(R.id.textView2);
listview1=(RecyclerView)findViewById(R.id.listview1);
registerForContextMenu(listview1);
}
TextView textView2;
RecyclerView listview1;
}
class Events{
Events(){
firebaseDatabase = FirebaseDatabase.getInstance();
myRef = FirebaseDatabase.getInstance().getReference("User_Details");
l.listview1.setLayoutManager(new LinearLayoutManager(Activity_category.this));
Toast.makeText(Activity_category.this, "Wait ! Fetching List...", Toast.LENGTH_SHORT).show();
// l.listview1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
// #Override
// public void onItemClick(AdapterView<?> adapterView, View view, int i, long id) {
// }
// });
}
}
Layout l;
Events e;
FirebaseDatabase firebaseDatabase;
DatabaseReference myRef;
FirebaseRecyclerAdapter<showdataitems, ShowDataViewHolder> mFirebaseAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
l = new Layout(); e = new Events();
}
public Activity_category() {
// Required empty public constructor
}
#Override
public void onStart() {
super.onStart();
//Log.d("LOGGED", "IN onStart ");
mFirebaseAdapter = new FirebaseRecyclerAdapter<showdataitems, ShowDataViewHolder>(showdataitems.class, R.layout.category, ShowDataViewHolder.class, myRef) {
public void populateViewHolder(final ShowDataViewHolder viewHolder, showdataitems model, final int position) {
viewHolder.Image_URL(model.getImage_URL());
viewHolder.Image_Title(model.getImage_Title());
//OnClick Item
viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(final View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(Activity_category.this);
builder.setMessage("Do you want to Delete this data ?").setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
int selectedItems = position;
mFirebaseAdapter.getRef(selectedItems).removeValue();
mFirebaseAdapter.notifyItemRemoved(selectedItems);
l.listview1.invalidate();
onStart();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog dialog = builder.create();
dialog.setTitle("Confirm");
dialog.show();
}
});
}
};
l.listview1.setAdapter(mFirebaseAdapter);
}
//View Holder For Recycler View
public static class ShowDataViewHolder extends RecyclerView.ViewHolder {
private final TextView text1;
private final ImageView imageView3;
public ShowDataViewHolder(final View itemView) {
super(itemView);
imageView3 = (ImageView) itemView.findViewById(R.id.imageView3);
text1 = (TextView) itemView.findViewById(R.id.text1);
}
private void Image_Title(String title) {
text1.setText(title);
}
private void Image_URL(String title) {
// image_url.setImageResource(R.drawable.loading);
Glide.with(itemView.getContext())
.load(title)
.crossFade()
.placeholder(R.drawable.newmenu1)
.thumbnail(0.1f)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imageView3);
}
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()){
case 1:
break;
}
return super.onContextItemSelected(item);
}
This is my Uploadinfo Activity
public class Uploadinfo extends Activity{
class Layout{
Layout(){
menuBtn= (Button)findViewById(R.id.menuBtn);
cancelBtn= (Button)findViewById(R.id.cancelBtn);
btnAddimage= (Button)findViewById(R.id.btnAddimage);
imageView= (ImageView)findViewById(R.id.imageView);
editText= (EditText)findViewById(R.id.editText);
}
Button menuBtn , cancelBtn,btnAddimage;
ImageView imageView;
EditText editText;
}
class Events{
Events(){
mProgressDialog = new ProgressDialog(Uploadinfo.this);
l.btnAddimage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
Toast.makeText(getApplicationContext(), "Call for Permission", Toast.LENGTH_SHORT).show();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
{
requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, READ_EXTERNAL_STORAGE);
}
}
else
{
callgalary();
}
}
});
mdatabaseRef = FirebaseDatabase.getInstance().getReference();
mRoofRef = new Firebase("https://restaurant-menu-4bdf2.firebaseio.com/").child("User_Details").push(); // Push will create new child every time we upload data
mStorage = FirebaseStorage.getInstance().getReferenceFromUrl("gs://restaurant-menu-4bdf2.appspot.com/");
l.menuBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
final String mName = l.editText.getText().toString().trim();
if(mName.isEmpty())
{
Toast.makeText(getApplicationContext(), "Fill all Field", Toast.LENGTH_SHORT).show();
return;
}
Firebase childRef_name = mRoofRef.child("Image_Title");
childRef_name.setValue(mName);
Toast.makeText(getApplicationContext(), "Updated Info", Toast.LENGTH_SHORT).show();
}
});
}
}
Layout l;
Events e;
public static final int READ_EXTERNAL_STORAGE = 0;
private static final int GALLERY_INTENT = 2;
private ProgressDialog mProgressDialog;
private Firebase mRoofRef;
private Uri mImageUri = null;
private DatabaseReference mdatabaseRef;
private StorageReference mStorage;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.menu);
l = new Layout(); e = new Events();
}
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case READ_EXTERNAL_STORAGE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
callgalary();
return;
}
Toast.makeText(getApplicationContext(), "...", Toast.LENGTH_SHORT).show();
}
private void callgalary() {
Intent intent1 = new Intent();
intent1.setType("image/*");
intent1.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent1, "Select Picture"), GALLERY_INTENT);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_INTENT && resultCode == RESULT_OK) {
mImageUri = data.getData();
l.imageView.setImageURI(mImageUri);
StorageReference filePath = mStorage.child("User_Images").child(mImageUri.getLastPathSegment());
mProgressDialog.setMessage("Uploading Image....");
mProgressDialog.show();
filePath.putFile(mImageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Uri downloadUri = taskSnapshot.getDownloadUrl(); //Ignore This error
mRoofRef.child("Image_URL").setValue(downloadUri.toString());
Glide.with(getApplicationContext())
.load(downloadUri)
.crossFade()
.placeholder(R.drawable.newmenu1)
.diskCacheStrategy(DiskCacheStrategy.RESULT)
.into( l.imageView);
Toast.makeText(getApplicationContext(), "Updated.", Toast.LENGTH_SHORT).show();
mProgressDialog.dismiss();
}
});
}
}

Bug in a code the buttons the buttons do absolutely nothing

I have a problem that I do not know which is a bug, when I press the add photo button or the send button does not happen at all and I do not get any error,
The first button should open my photos, and the second should send to a RecyclerView in a fragament I give my code
Sorry for my english use the google translate
the fragment
public class PostCreateDialog extends DialogFragment implements View.OnClickListener{
private static final int RC_PHOTO_PICKER = 1;
private Post mPost;
private ProgressDialog mProgressDialog;
private ImageView mPostImageView;
private View mRootView;
private Uri mSelectedUri;
private ImageButton sendPostButton;
private ImageButton selectFotoButton;
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
mPost = new Post();
mProgressDialog = new ProgressDialog(getContext());
mRootView = getActivity().getLayoutInflater().inflate(R.layout.create_post_dialog, null);
mPostImageView = (ImageView) mRootView.findViewById(R.id.post_dialog_display);
selectFotoButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_select_imageview);
sendPostButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_send_imageview);
builder.setView(mRootView);
return builder.create();
}
#Override
public void onClick(View v) {
switch (v.getId()){
case R.id.post_dialog_select_imageview:
selectImage();
break;
case R.id.post_dialog_send_imageview:
sendPost();
break;
}
}
private void sendPost() {
mProgressDialog.setMessage("Sending post...");
mProgressDialog.setCancelable(false);
mProgressDialog.setIndeterminate(true);
mProgressDialog.show();
FirebaseUtils.getUserRef(FirebaseUtils.getCurrentUser().getEmail().replace(".",",")).addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
User user = dataSnapshot.getValue(User.class);
final String postId = FirebaseUtils.getUid();
TextView postDialogText = (TextView) mRootView.findViewById(R.id.post_dialog_edittext);
String text = postDialogText.getText().toString();
mPost.setUser(user);
mPost.setNumOfLikes(0);
mPost.setNumOfComments(0);
mPost.setNumOfUnlikes(0);
mPost.setTimeOfcreation(System.currentTimeMillis());
mPost.setPostText(text);
if(mSelectedUri != null){
FirebaseUtils.getImageRef().child(mSelectedUri.getLastPathSegment()).putFile(mSelectedUri).addOnSuccessListener(getActivity(), new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
String url = Contants.POST_IMAGES + "/" + mSelectedUri.getLastPathSegment();
mPost.setImageUrl(url);
addToMyPostList(postId);
}
});
}else {
addToMyPostList(postId);
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
mProgressDialog.dismiss();
}
});
}
// ESTE DE AQUI ES COMO UN FINAL A TOODO SI SE COMPLETA O SI CANCELA
private void addToMyPostList(String postId){
FirebaseUtils.getPostRef().child(postId).setValue(mPost);
FirebaseUtils.getPostRef().child(postId).setValue(true).addOnCompleteListener(getActivity(), new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
mProgressDialog.dismiss();
dismiss();
}
});
}
// ESTOS DOS METODOS SIRVEN PARA SELECCIONAR LA IMAGEN
private void selectImage() {
Intent intent1 = new Intent(Intent.ACTION_GET_CONTENT);
intent1.setType("image/jpeg");
intent1.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
startActivityForResult(Intent.createChooser(intent1, "Comlete action using"), RC_PHOTO_PICKER);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == RC_PHOTO_PICKER){
if(resultCode == RESULT_OK){
mSelectedUri = data.getData();
mPostImageView.setImageURI(mSelectedUri);
}
}
}
}
the dialog:
public class PostCreateDialog extends DialogFragment implements View.OnClickListener{
private static final int RC_PHOTO_PICKER = 1;
private Post mPost;
private ProgressDialog mProgressDialog;
private ImageView mPostImageView;
private View mRootView;
private Uri mSelectedUri;
private ImageButton sendPostButton;
private ImageButton selectFotoButton;
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
mPost = new Post();
mProgressDialog = new ProgressDialog(getContext());
mRootView = getActivity().getLayoutInflater().inflate(R.layout.create_post_dialog, null);
mPostImageView = (ImageView) mRootView.findViewById(R.id.post_dialog_display);
selectFotoButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_select_imageview);
sendPostButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_send_imageview);
builder.setView(mRootView);
return builder.create();
}
#Override
public void onClick(View v) {
switch (v.getId()){
case R.id.post_dialog_select_imageview:
selectImage();
break;
case R.id.post_dialog_send_imageview:
sendPost();
break;
}
}
private void sendPost() {
mProgressDialog.setMessage("Sending post...");
mProgressDialog.setCancelable(false);
mProgressDialog.setIndeterminate(true);
mProgressDialog.show();
FirebaseUtils.getUserRef(FirebaseUtils.getCurrentUser().getEmail().replace(".",",")).addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
User user = dataSnapshot.getValue(User.class);
final String postId = FirebaseUtils.getUid();
TextView postDialogText = (TextView) mRootView.findViewById(R.id.post_dialog_edittext);
String text = postDialogText.getText().toString();
mPost.setUser(user);
mPost.setNumOfLikes(0);
mPost.setNumOfComments(0);
mPost.setNumOfUnlikes(0);
mPost.setTimeOfcreation(System.currentTimeMillis());
mPost.setPostText(text);
if(mSelectedUri != null){
FirebaseUtils.getImageRef().child(mSelectedUri.getLastPathSegment()).putFile(mSelectedUri).addOnSuccessListener(getActivity(), new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
String url = Contants.POST_IMAGES + "/" + mSelectedUri.getLastPathSegment();
mPost.setImageUrl(url);
addToMyPostList(postId);
}
});
}else {
addToMyPostList(postId);
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
mProgressDialog.dismiss();
}
});
}
// ESTE DE AQUI ES COMO UN FINAL A TOODO SI SE COMPLETA O SI CANCELA
private void addToMyPostList(String postId){
FirebaseUtils.getPostRef().child(postId).setValue(mPost);
FirebaseUtils.getPostRef().child(postId).setValue(true).addOnCompleteListener(getActivity(), new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
mProgressDialog.dismiss();
dismiss();
}
});
}
// ESTOS DOS METODOS SIRVEN PARA SELECCIONAR LA IMAGEN
private void selectImage() {
Intent intent1 = new Intent(Intent.ACTION_GET_CONTENT);
intent1.setType("image/jpeg");
intent1.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
startActivityForResult(Intent.createChooser(intent1, "Comlete action using"), RC_PHOTO_PICKER);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == RC_PHOTO_PICKER){
if(resultCode == RESULT_OK){
mSelectedUri = data.getData();
mPostImageView.setImageURI(mSelectedUri);
}
}
}
}

Try to display any toast on button click.
If toast appears then your click event is working and if the toast is not shown then your button click is not working.