Tag: Retrieve

I want to retrieve data from Firebase and display it in an EditText and allow the user to make changes to it if necessary

This is an Android note app that Firebase uses as a database

I want to retrieve data from Firebase and display it in an EditText and allow the user to make changes to it if necessary.

public class HomeActivity extends AppCompatActivity {

    private Toolbar mToolbar;
    private FloatingActionButton mFABCreate;

    private FirebaseAuth mFirebaseAuth;
    private RecyclerView mRecyclerView;
    private DatabaseReference mDatabaseReference;

    String mPost_Key;
    String mKey;
    String mTitle;
    String mNote;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);

        mFirebaseAuth  = FirebaseAuth.getInstance();
        FirebaseUser lFirebaseUser = mFirebaseAuth.getCurrentUser();
        assert lFirebaseUser  != null;
        String uid = lFirebaseUser.getUid();
        mDatabaseReference = FirebaseDatabase.getInstance().getReference().child("AllData").child(uid);
        mDatabaseReference.keepSynced(true);



        mRecyclerView = findViewById(R.id.recycler);

        LinearLayoutManager lLinearLayoutManager = new LinearLayoutManager(this);
        lLinearLayoutManager.setStackFromEnd(true);
        lLinearLayoutManager.setReverseLayout(true); 
        mRecyclerView.setHasFixedSize(true);
        mRecyclerView.setLayoutManager(lLinearLayoutManager);


        mToolbar = findViewById(R.id.toolbar);
        mToolbar.setTitle("Quick Note");

        FloatingActionButton fab = findViewById(R.id.Add_Data);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                finish();
                startActivity(new Intent(HomeActivity.this, AddActivity.class));
            }
        });
    }

    @Override
    protected void onStart() {
        super.onStart();

        FirebaseRecyclerAdapter lAdapter = new FirebaseRecyclerAdapter(
                Items.class,
                R.layout.show_note,
                RecyclerViewAdapter.class,
                mDatabaseReference) {
            @Override
            protected void populateViewHolder(RecyclerViewAdapter recyclerViewAdapter, final Items items, final int i) {
                recyclerViewAdapter.setTitle(items.getTitle());
                recyclerViewAdapter.setNote(items.getNote());
                recyclerViewAdapter.setDate(items.getDate());

                recyclerViewAdapter.mView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mPost_Key = getRef(i).getKey();
                        mTitle = items.getTitle();
                        mNote = items.getNote();

                        editData();
                    }
                });

            }
        };
        mRecyclerView.setAdapter(lAdapter);
    }


    private void editData(){
        startActivity(new Intent(getApplicationContext(), EditActivity.class));
    }


    public static class RecyclerViewAdapter extends RecyclerView.ViewHolder{
        View mView;
        public RecyclerViewAdapter(@NonNull View itemView) {
            super(itemView);
            mView = itemView;
        }
        public void setTitle (String title){
            TextView lTitle = mView.findViewById(R.id.showTitle);
            lTitle.setText(title);
        }

        public void setNote (String note){
            TextView lNote = mView.findViewById(R.id.showNote);
            lNote.setText(note);
        }

        public void setDate (String date){
            TextView lDate = mView.findViewById(R.id.showDate);
            lDate.setText(date);
        }
    }

}

public class EditActivity extends AppCompatActivity {
    private FirebaseAuth mAuth;
    private DatabaseReference mDatabaseReference;
    private FirebaseDatabase mFirebaseDatabase;
    RecyclerView mRecyclerView;

    String mPost_Key;
    String mTitle, mNote;
    String lTitleFire;
    String lNoteFire;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_edit);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        final EditText lTitle = findViewById(R.id.YourTitleEdit);
        final TextView lNote = findViewById(R.id.Your_Note_Add);
        mAuth = FirebaseAuth.getInstance();
        mFirebaseDatabase = FirebaseDatabase.getInstance();
        mDatabaseReference = mFirebaseDatabase.getReference(mAuth.getUid());
        mDatabaseReference.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                Items lGetValues  = dataSnapshot.getValue(Items.class);
                assert lGetValues != null;
                lTitle.setText(lGetValues.getTitle());
                lNote.setText(lGetValues.getNote());
            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {
                Toast.makeText(getApplicationContext(), "Getting value failed", Toast.LENGTH_LONG).show();

            }
        });

    }

}

public class Items {
    String title;
    String note;
    String date;
    String id;

    public Items() {
    }

    public Items(String title, String note, String date, String id) {
        this.title = title;
        this.note = note;
        this.date = date;
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getNote() {
        return note;
    }

    public void setNote(String note) {
        this.note = note;
    }

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }
}    

Fire Base data:

All data

nakrU3ArQNShLzyn9U8X9fAFNeL2

-LopLNpUFmepM8gvCmHS

Date:

I would:

Note:

Title:

My goal is to set the values ​​obtained by Firebase and display them in "EditActivity".