this is my fragment '''java package com.example.healthapp.ui.profile;
import android.database.Cursor;
import android.os.Bundle;
import android.os.RecoverySystem;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.example.healthapp.CustomAdapter;
import com.example.healthapp.MyDatabase;
import com.example.healthapp.R;
import com.example.healthapp.databinding.FragmentSettingsBinding;
import java.util.ArrayList;
import java.util.Objects;
public class ProfileFragment extends Fragment {
private ProfileViewModel profileViewModel;
private FragmentSettingsBinding binding;
public MyDatabase myDB;
public ArrayList<String> user_id, user_firstName, user_lastName, user_email, user_phone_number, user_age, user_weight;
public CustomAdapter customAdapter;
private static final String TAG = "Testing";
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
profileViewModel =
new ViewModelProvider(this).get(ProfileViewModel.class);
//View view = inflater.inflate(R.layout.fragment_profile);
binding = FragmentSettingsBinding.inflate(inflater, container, false);
View root = binding.getRoot();
//getActivity().setContentView();
Log.i("Root Info: ", root.toString());
RecyclerView recyclerView = root.findViewById(R.id.recyclerview);
myDB = new MyDatabase(getActivity());
user_id = new ArrayList<>();
user_firstName = new ArrayList<>();
user_lastName = new ArrayList<>();
user_email = new ArrayList<>();
user_phone_number = new ArrayList<>();
user_age = new ArrayList<>();
user_weight = new ArrayList<>();
storeDataInArrays();
customAdapter = new CustomAdapter(ProfileFragment.this, getActivity(), user_id, user_firstName, user_lastName, user_email,
user_phone_number , user_age, user_weight);
try {
recyclerView.setAdapter(customAdapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
} catch (Exception e) {
Log.e("Error setting Adapter", "Custom Adapter null: " +
(customAdapter == null ? "true" : "false") +
", RecyclerView Null: " + (recyclerView == null ? "true" : "false"), e);
}
final TextView textView = binding.textFragment;
profileViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
@Override
public void onChanged(@Nullable String s) {
textView.setText(s);
}
});
return root;
}
public void storeDataInArrays(){
Cursor cursor = myDB.readAllData();
if(cursor.getCount() == 0){
Toast.makeText(getActivity(), "No data" , Toast.LENGTH_SHORT).show();
Log.i(TAG, "No Data");
}else{
while (cursor.moveToNext()){
user_id.add(cursor.getString(0));
user_firstName.add(cursor.getString(1));
user_lastName.add(cursor.getString(2));
user_email.add(cursor.getString(3));
user_phone_number.add(cursor.getString(4));
user_age.add(cursor.getString(5));
user_weight.add(cursor.getString(6));
Log.i(TAG, user_firstName + " " + user_lastName);
}
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
binding = null;
}
}
'''
fragmant_profile.xml
'''xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns: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=".ui.profile.ProfileFragment">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/RecyclerView"
android:layout_width="409dp"
android:layout_height="729dp"
android:layout_marginTop="1dp"
android:layout_marginBottom="1dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
'''
error code E/Error setting Adapter: Custom Adapter null: false, RecyclerView Null: true java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.recyclerview.widget.RecyclerView.setAdapter(androidx.recyclerview.widget.RecyclerView$Adapter)' on a null object reference at com.example.healthapp.ui.profile.ProfileFragment.onCreateView(ProfileFragment.java:71) at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2963) at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:518) at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282) at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189) at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2106) at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002) at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:223) at android.app.ActivityThread.main(ActivityThread.java:7656) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947) **
