Android get data from Firebase realtime database and add it as CardView

MainActivity.java

private DatabaseReference mDatabase;

@Override
protected void onCreate(Bundle savedInstanceState) { //closes on line 74
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_available_donations);
  
  final Context mContext = getApplicationContext();
  
  mDatabase = FirebaseDatabase.getInstance().getReference();
  mDatabase.addValueEventListener(new ValueEventListener() { //closes on line 73
  
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
      for (DataSnapshot childDataSnapshot : dataSnapshot.getChildren()) {
        try{
          String address = childDataSnapshot.child("address").getValue().toString();
          String foodName = childDataSnapshot.child("foodName").getValue().toString();
          String phoneNumber = childDataSnapshot.child("phoneNumber").getValue().toString();
          String quantity = childDataSnapshot.child("quantity").getValue().toString();

          CardView card = new CardView(mContext);
          // Set the CardView layoutParams
          LayoutParams params = new LayoutParams(
          LayoutParams.MATCH_PARENT,
          LayoutParams.WRAP_CONTENT);
          params.setMargins(40, 20, 40, 20);
          card.setLayoutParams(params);
          //card.setRadius(9);
          //card.setContentPadding(15, 15, 15, 15);
          card.setCardBackgroundColor(Color.parseColor("#e5e5e5"));
          //card.setMaxCardElevation(15);
          card.setCardElevation(5);

          TextView tv = new TextView(mContext);
          tv.setLayoutParams(params);
          tv.setText(foodName+" ("+quantity+")");
          tv.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 20);
          tv.setTextColor(Color.BLACK);
          tv.setGravity(Gravity.CENTER_HORIZONTAL);

          LayoutParams params2 = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
          params2.setMargins(0, 150, 0, 20);
          TextView tv3 = new TextView(mContext);
          tv3.setLayoutParams(params2);
          tv3.setText("\n"+address);
          tv3.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 20);
          tv3.setTextColor(Color.DKGRAY);
          tv3.setGravity(Gravity.CENTER_HORIZONTAL);

          LayoutParams params3 = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
          params3.setMargins(0, 300, 0, 20);
          TextView tv4 = new TextView(mContext);
          tv4.setLayoutParams(params3);
          tv4.setText("\n\n\n"+phoneNumber.substring(0, 3)+"-"+phoneNumber.substring(3, 6)+"-"+phoneNumber.substring(6, 10));
          tv4.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 20);
          tv4.setTextColor(Color.DKGRAY);
          tv4.setGravity(Gravity.CENTER_HORIZONTAL);

          // Put the TextView in CardView
          card.addView(tv);
          card.addView(tv3);
          card.addView(tv4);
          // Finally, add the CardView in root layout
          ((LinearLayout)findViewById(R.id.linearlayoutboi)).addView(card); //replace "linearlayoutboi" with desired XML file in res/layouts/
        }catch(Exception e){}
      }
    }
    
    @Override
    public void onCancelled(DatabaseError databaseError) {}
    
  }); //closes ValueEventListener
} //closes onCreate()