Android Open Source - ProjectStudio Home Fragment

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License

The source code is released under:
Apache License
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Java Source Code

/**
 *//from   ww w  .  j a va  2 s . co  m
 */
package fragments;

import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.DrawerLayout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;

import com.example.uniutilproject.R;

import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

import DB_Provider.TaskDataSource;
import adapters.TaskCardAdapter;


/**
 * @author desmond
 */
public class HomeFragment extends Fragment {

    private static final int HIDE_SETTINGS_ICON = 1;
    private DrawerLayout parent_drawer;
    private TextView date_text;
    private Date date_format;
    private TextView home_title;
    private ListView home_list;
    private TaskDataSource dataSource;
    private int menu_settings_state;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.home_fragment, container, false);

        /*
        //REMOVE THE SETTINGS ICON FROM THE ACTIONBAR
        menu_settings_state = HIDE_SETTINGS_ICON;
        //now call onCreteOptionsMenu again
        getActivity().invalidateOptionsMenu();
        */

        //CALL DATABASE
        dataSource = new TaskDataSource(getActivity());
        try {
            dataSource.open();
        } catch (SQLException e) {
            e.printStackTrace();
        }

        //IF DRAWER HAS BEEN DISABLED BY SOME OTHER FRAGMENT
        //ENABLE DRAWER
        parent_drawer = (DrawerLayout) getActivity().findViewById(R.id.drawer_layout);
        if (parent_drawer.getDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED) == 0){
            parent_drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
        }

        //GET CURRENT DAY
        getCurrentDate();
        String todays_date = new SimpleDateFormat("EEEE,  d  MMMM").format(date_format);
        final String today = new SimpleDateFormat("EEEE").format(date_format);

        //INFLATE VIEWS HERE
        if (view != null) {
            home_list = (ListView) view.findViewById(R.id.home_listview);
            date_text = (TextView) view.findViewById(R.id.todays_date);
            home_title = (TextView) view.findViewById(R.id.home_title);
        }

        date_text.setText(todays_date);

        new android.os.Handler().post(new Runnable() {
            @Override
            public void run() {
                Cursor cursor = dataSource.getTaskByDay(today);
                //check if cursor is empty
                if (cursor.getCount() == 0) {
                    home_title.setText("NO TASKS FOR TODAY");
                }

                TaskCardAdapter adapter = new TaskCardAdapter(getActivity(), cursor, true);
                home_list.setAdapter(adapter);
                adapter.notifyDataSetChanged();

            }
        });

        dataSource.close();

        return view;
    }

    //SET CURRENT DATE
    public void getCurrentDate(){
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);
        try {

            date_format = dateFormat.parse(year + "-" + (month + 1) + "-" + day);
        } catch (ParseException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onResume() {
        try {
            dataSource.open();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        super.onResume();
    }

    @Override
    public void onPause() {
        dataSource.close();
        super.onPause();
    }


    // Register the fragment as a contributor to the Options Menu
    // call setHasOptions within its onCreate Handler
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
    }

    // add a menu item when this fragment is called
    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        // custom menu (action bar layout)
        inflater.inflate(R.menu.task_menu, menu);

    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        super.onOptionsItemSelected(item);

        // Find which menu item has been selected
        switch (item.getItemId()) {
            // Check for each known menu item
            case R.id.task_menu_addbtn:
                showChildFragment();
                return true;
            // Return false if the menu item has not been handled
            default:
                return false;
        }
    }

    //
    private void showChildFragment() {
        FragmentManager fm = getFragmentManager();
        AddTaskFragment frag = new AddTaskFragment();
        FragmentTransaction transaction = fm.beginTransaction();

        // For a little polish, specify a transition animation
        transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
        transaction.replace(((ViewGroup) getView().getParent()).getId(), frag).addToBackStack(null).commit();
    }

    //REMOVE THE THREE DOT ICON FROM THE ACTIONBAR, SINCE IT IS NOT NEEDED FOR NOW
    @Override
    public void onPrepareOptionsMenu(Menu menu) {
        MenuItem item = menu.findItem(R.id.action_settings);
        item.setVisible(false);
        super.onPrepareOptionsMenu(menu);
    }
}
Java Source Code List
