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.
