Android Intent Not Transferring Data To Another Activity? Firebase Data

May 25, 2024 Post a Comment

I asked about this yesterday but never had much luck, I thought I would re-ask with a clearer outline of what I am trying to do.. Firstly, here is my Firebase hierarchy I have a R

Solution 1:

This answer based on your last few questions , hope this will help you. Today I will not talk about firebase authentication or store data part , because you already done that . I understand that at first you want to retrieve data and want show it in RecyclerView , then if user click on these specific data/item you want to show details through DogProfile. Almost of your code fine , in getDogData() method you should just add dogName with ArrayList and populate the Adapter . Then pass the data trough intent , use adapter.getItem(position) instead dogName variable.

Just follow these code-

ChooseDog class

publicclassChooseDogextendsAppCompatActivityimplementsMyRecyclerViewAdapter.ItemClickListener {

 MyRecyclerViewAdapter adapter;
 privateDatabaseReference databaseReference;
 privateArrayList<String> dogList;
 privateString dogName;
 privateRecyclerView recyclerView;

 @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_choose_dog);

     // dogName = findViewById(R.id.dogName);

     databaseReference = FirebaseDatabase.getInstance().getReference("user").child(FirebaseAuth.getInstance().getCurrentUser().getUid()).child("dogs");
     getDogData();

     dogList = newArrayList<>();
     recyclerView = findViewById(R.id.dogList);
     recyclerView.setLayoutManager(newLinearLayoutManager(getApplicationContext()));
     adapter = newMyRecyclerViewAdapter(getApplicationContext(), dogList);
     adapter.setClickListener(this);


 }


 privatevoidgetDogData() {
     databaseReference.addValueEventListener(newValueEventListener() {
         @OverridepublicvoidonDataChange(DataSnapshot dataSnapshot) {

             for (DataSnapshot ds : dataSnapshot.getChildren()) {

                 dogName = ds.child("name").getValue().toString();
                 dogList.add(dogName);
                 recyclerView.setAdapter(adapter);


             }

         }

         @OverridepublicvoidonCancelled(DatabaseError databaseError) {
             Log.w("TAG", "onCancelled", databaseError.toException());
         }
     });
 }

 @OverridepublicvoidonItemClick(View view, int position) {
     Toast.makeText(this, "You Selected " + adapter.getItem(position), Toast.LENGTH_SHORT).show();
     Intent intent = newIntent(ChooseDog.this, DogProfile.class);
     intent.putExtra("name", adapter.getItem(position));
     startActivity(intent);
 }
}

activity_choose_do.xml

<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".ChooseDog"><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/dogList"android:layout_width="match_parent"android:layout_height="match_parent" /></androidx.constraintlayout.widget.ConstraintLayout>

MyRecyclerViewAdapter class

publicclassMyRecyclerViewAdapterextendsRecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {

 private List<String> zData;
 private LayoutInflater zInflater;
 private ItemClickListener mClickListener;

 // data is passed into the constructor
 MyRecyclerViewAdapter(Context context, List<String> data) {
     this.zInflater = LayoutInflater.from(context);
     this.zData = data;
 }

 // inflates the row layout from xml when needed@Overridepublic ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
     Viewview= zInflater.inflate(R.layout.recyclerview_layout, parent, false);
     returnnewViewHolder(view);
 }

 // binds the data to the TextView in each row@OverridepublicvoidonBindViewHolder(ViewHolder holder, int position) {
     Stringdog= zData.get(position);
     holder.myTextView.setText(dog);
 }

 // total number of rows@OverridepublicintgetItemCount() {
     return zData.size();
 }


 // stores and recycles views as they are scrolled off screenpublicclassViewHolderextendsRecyclerView.ViewHolder implementsView.OnClickListener {
     TextView myTextView;

     ViewHolder(View itemView) {
         super(itemView);
         myTextView = itemView.findViewById(R.id.dogsName);
         itemView.setOnClickListener(this);
     }

     @OverridepublicvoidonClick(View view) {
         if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
     }
 }

 // convenience method for getting data at click position
 String getItem(int id) {
     return zData.get(id);
 }

 // allows clicks events to be caughtvoidsetClickListener(ItemClickListener itemClickListener) {
     this.mClickListener = itemClickListener;
 }

 // parent activity will implement this method to respond to click eventspublicinterfaceItemClickListener {
     voidonItemClick(View view, int position);
 }
}

recyclerview_layout.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:padding="10dp"><TextViewandroid:id="@+id/dogsName"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="20sp"/>

DogProfile class , in this some wrong cast I was found , such as Spinner as TextView . Here fixed copy -

publicclassDogProfileextendsAppCompatActivity {

 private FirebaseAuth firebaseAuth;
 private FirebaseUser currentUser;

 TextView breed;
 Spinner ageDropdown, genderDropdown, weightDropdown, neuteredDropdown; //zi
 String uid;
 String dogId;
 private EditText dogName; //zi@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.dog_profile);

     firebaseAuth = FirebaseAuth.getInstance();
     currentUser = firebaseAuth.getCurrentUser();
     uid = currentUser.getUid();

     dogName = findViewById(R.id.name);
     breed = findViewById(R.id.breed);
     ageDropdown = findViewById(R.id.age);
     genderDropdown= findViewById(R.id.gender);
     weightDropdown = findViewById(R.id.weight);
     neuteredDropdown = findViewById(R.id.neutered);

     getDogData();

 }

 privatevoidgetDogData() {

     DatabaseReferencedatabaseReference= FirebaseDatabase.getInstance().getReference("user").child(FirebaseAuth.getInstance().getCurrentUser().getUid()).child("dogs");

     StringdogsName= getIntent().getExtras().getString("name");
     Queryquery= databaseReference.orderByChild("name").equalTo(dogsName);

     query.addValueEventListener(newValueEventListener() {

         @OverridepublicvoidonDataChange(DataSnapshot dataSnapshot) {

             for (DataSnapshot ds : dataSnapshot.getChildren()) {
                 Stringname= (String) ds.child("name").getValue();

                 if (name.equals(dogsName)) {
                     StringdogBreed= (String) ds.child("breed").getValue();
                     StringdogAge= (String) ds.child("age").getValue();
                     Stringgender= (String) ds.child("gender").getValue();
                     StringdogWeight= (String) ds.child("weight").getValue();
                     Stringneutered= (String) ds.child("neutered").getValue();

                     dogName.setText(name);
                     breed.setText(dogBreed);


     ArrayAdapter<String> ageAdapter = newArrayAdapter<String> (getApplicationContext(), android.R.layout.simple_spinner_item, Collections.singletonList(dogAge));
     ageAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
     ageDropdown.setAdapter(ageAdapter);

     ArrayAdapter<String> weightAdapter = newArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_spinner_item, Collections.singletonList(dogWeight));
     weightAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
     weightDropdown.setAdapter(weightAdapter);

     ArrayAdapter<String> genderAdapter = newArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_spinner_item, Collections.singletonList(gender));
     genderAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
     genderDropdown.setAdapter(genderAdapter);

     ArrayAdapter<String> neuteredAdapter = newArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_spinner_item, Collections.singletonList(neutered));
     neuteredAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
     neuteredDropdown.setAdapter(neuteredAdapter);
                 } else {
                     Toast.makeText(DogProfile.this, "Please try again..", Toast.LENGTH_SHORT).show();
                 }
             }
         }

         @OverridepublicvoidonCancelled(DatabaseError databaseError) {
             Log.w("TAG", "onCancelled", databaseError.toException());
         }
     });
 }


}

dog_profile.xml

<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".DogProfile"><androidx.constraintlayout.widget.ConstraintLayoutandroid:id="@+id/constraintLayout"android:layout_width="0dp"android:layout_height="560dp"android:layout_marginStart="9dp"android:layout_marginLeft="9dp"android:layout_marginEnd="9dp"android:layout_marginRight="9dp"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="parent"><Spinnerandroid:id="@+id/age"android:layout_width="160dp"android:layout_height="59dp"android:autofillHints="age"android:hint="Age"android:inputType="text"android:labelFor="@+id/name"android:spinnerMode="dropdown"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.085"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.353" /><Spinnerandroid:id="@+id/weight"android:layout_width="160dp"android:layout_height="61dp"android:autofillHints="weight"android:hint="Weight (kg)"android:inputType="text"android:labelFor="@+id/name"android:spinnerMode="dropdown"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.901"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.356" /><TextViewandroid:id="@+id/breed"android:layout_width="347dp"android:layout_height="57dp"android:autofillHints="breed"android:focusable="true"android:hint="Breed"android:inputType="text"android:labelFor="@+id/name"android:spinnerMode="dropdown"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.434"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.196" /><EditTextandroid:id="@+id/name"android:layout_width="354dp"android:layout_height="56dp"android:autofillHints="Name"android:hint="Name"android:inputType="text"android:labelFor="@+id/name"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.495"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.032" /><Spinnerandroid:id="@+id/gender"android:layout_width="160dp"android:layout_height="61dp"android:autofillHints="gender"android:hint="Gender"android:inputType="text"android:labelFor="@+id/name"android:spinnerMode="dropdown"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.086"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.532" /><Spinnerandroid:id="@+id/neutered"android:layout_width="160dp"android:layout_height="56dp"android:autofillHints="neutered"android:hint="Neutered?"android:inputType="text"android:labelFor="@+id/name"android:spinnerMode="dropdown"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.901"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.535" /><TextViewandroid:id="@+id/textView"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Daily Exercise Goal"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.058"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.665" /><Viewandroid:id="@+id/divider"android:layout_width="match_parent"android:layout_height="1dp"android:background="?android:attr/listDivider"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintHorizontal_bias="0.0"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"app:layout_constraintVertical_bias="0.624" /></androidx.constraintlayout.widget.ConstraintLayout></androidx.constraintlayout.widget.ConstraintLayout>

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Android Intent Not Transferring Data To Another Activity? Firebase Data

Solution 1:

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