Student_details.java

package com.example.faceattendancev20;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import java.util.ArrayList;

import javax.security.auth.Subject;

public class Student_details extends Activity
{
    private ListView StudentDetail;
    private AttendanceDatabase mDatabase;

    private static final String TAG = "Student_details";

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

        StudentDetail = (ListView)findViewById(R.id.detailStudent);

        mDatabase = new AttendanceDatabase(Student_details.this);

        StudentAdapter adapter = new StudentAdapter(mDatabase.getStudent());

        StudentDetail.setAdapter(adapter);
        StudentDetail.setOnItemClickListener(adapter);
    }

    @Override
    protected void onResume()
    {
        super.onResume();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        //getMenuInflater().inflate(R.menu.mainmenu, menu);
        return true;
    }

    @Override //here
    public boolean onOptionsItemSelected(MenuItem item)
    {
        super.onOptionsItemSelected(item);
        switch(item.getItemId())
        {
            case R.id.detailStudent:
                Bundle dataBundle = new Bundle();
                dataBundle.putInt("id", 0);
                Log.d(TAG,"id");
                Intent intent = new Intent(getApplicationContext(),AddStudentActivity.class);
                intent.putExtras(dataBundle);
                startActivity(intent);
                return true;
            default:
                return super.onOptionsItemSelected(item);

        }

    }


    public class StudentAdapter extends BaseAdapter implements AdapterView.OnItemClickListener
    {
        private ArrayList<Student> mList;

        public StudentAdapter(Cursor data)
        {
            mList = new ArrayList<Student>();

            data.moveToFirst();

            do
            {
                String studentID = data.getString(data.getColumnIndex(AttendanceDatabase.COLUMN_STUDENT_ID));
                String studentName = data.getString(data.getColumnIndex(AttendanceDatabase.COLUMN_STUDENT_NAME));

                Student student = new Student(0, studentID, studentName);

                mList.add(student);
            } while (data.moveToNext());
        }

        @Override
        public int getCount()
        {
            return mList.size();
        }

        @Override
        public Student getItem(int position)
        {
            return mList.get(position);
        }

        @Override
        public long getItemId(int position)
        {
            return getItem(position).id;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent)
        {
            Student student = getItem(position);

            if (convertView == null)
                convertView = getLayoutInflater().inflate(R.layout.item_student_details, null);

            if (student != null)
            {
                TextView studentIDTextView = (TextView)convertView.findViewById(R.id.txtStudentID);
                TextView studentNameTextView = (TextView)convertView.findViewById(R.id.txtStudentName);

                studentIDTextView.setText(student.studentID);
                studentNameTextView.setText(student.studentName);
            }

            return convertView;
        }

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id)
        {
            Student student = getItem(position);
            Log.d(TAG, String.format("Student Clicked: %s - %s", student.studentID, student.studentName));


            int id_To_search = position + 1;
            Bundle bundle=new Bundle();
            bundle.putInt("id",id_To_search);
            Intent intent=new Intent(getApplicationContext(), AddStudentActivity.class);
            intent.putExtras(bundle);
            startActivity(intent);


        }
    }

    public class Student
    {
        int id;
        String studentID;
        String studentName;

        public Student(int id, String studentID, String studentName)
        {
            this.id = id;
            this.studentID = studentID;
            this.studentName = studentName;
        }
    }
}