habit_tracker_android/app/src/main/java/View/HomeActivity.java

package View;

import static android.util.Log.println;

import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.TextView;

import androidx.activity.EdgeToEdge;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import com.example.habittracker.R;

import java.util.List;

import Database.DatabaseHelper;
import Model.Habit;

public class HomeActivity extends AppCompatActivity {

    String username;
    String password;
    public static String userId;
    TextView user_greeting_tv;
    Button addHabitButton;
    DatabaseHelper db;
    List<Habit> habitList;
    LinearLayout parentLayout;
    ImageButton refreshBtn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_home);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });


        user_greeting_tv = findViewById(R.id.user_greating_tv);
        addHabitButton = findViewById(R.id.add_habit);
        refreshBtn = findViewById(R.id.refresh_btn);
        userId = getIntent().getStringExtra("UserId");
        username = getIntent().getStringExtra("Username");
        password = getIntent().getStringExtra("Password");
        db = new DatabaseHelper(HomeActivity.this);
        habitList = db.getAllHabits(userId);
        parentLayout = findViewById(R.id.habits_list);

        user_greeting_tv.setText(String.format("Hello, %s", username));

        addHabitButton.setOnClickListener(v -> {
            startActivity(new Intent(this, AddHabit.class));

        });

        refreshBtn.setOnClickListener(v -> {
            habitList = db.getAllHabits(userId);
            parentLayout.removeAllViews();
            displayHabits();
        });

        displayHabits();

    }

    private void displayHabits() {
        for (Habit habit : habitList) {
            println(Log.DEBUG, "Habit: ", habit.getHabitName());
            LinearLayout linearLayout = getLinearLayout(habit);
            parentLayout.addView(linearLayout);
        }
    }

    private @NonNull LinearLayout getLinearLayout(Habit habit) {
        LinearLayout linearLayout = new LinearLayout(this);
        // Create LayoutParams with MATCH_PARENT for width and WRAP_CONTENT for height
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT
        );
        linearLayout.setLayoutParams(params);
        linearLayout.setOrientation(LinearLayout.HORIZONTAL);
        linearLayout.setPadding(25, 25, 25, 25);

        CheckBox checkBox = new CheckBox(this);
        checkBox.setPadding(40, 40, 40, 40);

        TextView habitTime = new TextView(this);
        habitTime.setPadding(40, 40, 40, 40);
        habitTime.setTextSize(20);
        habitTime.setText(habit.getTime());
        habitTime.setTextColor(Color.parseColor("#e2e2e2"));

        TextView habitName = new TextView(this);
        habitName.setPadding(40, 40, 40, 40);
        habitName.setTextSize(20);
        habitName.setText(habit.getHabitName());
        habitName.setTextColor(Color.parseColor("#e2e2e2"));

        linearLayout.addView(checkBox);
        linearLayout.addView(habitTime);
        linearLayout.addView(habitName);
        return linearLayout;
    }
}