Android Open Source - ProjectStudio Courses Fragment

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License

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

/**
 *//from  w w  w. j a va  2  s.  c  om
 */
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.util.Log;
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.ShareActionProvider;

import com.example.uniutilproject.R;

import java.sql.SQLException;

import DB_Provider.CourseDataSource;
import adapters.CourseCardAdapter;

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

    private DrawerLayout parent_drawer;
    private ListView course_list;
    private CourseDataSource dataSource;
    private CourseCardAdapter adapter;
    private ViewGroup parent_view;
    private ShareActionProvider mShareActionProvider;

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

        View view = inflater.inflate(R.layout.courses_fragment, container,
                false);
        course_list = (ListView) view.findViewById(R.id.courses_fragment_list);


        //OPEN DATABASE
        dataSource = new CourseDataSource(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);
        }

        //INLFLATE VIEWS HERE
        course_list = (ListView) view.findViewById(R.id.courses_fragment_list);

        final Cursor cursor = dataSource.getAllCourseData();

        new android.os.Handler().post(new Runnable() {
            @Override
            public void run() {
                parent_view = ((ViewGroup) getView().getParent());
                adapter = new CourseCardAdapter(getActivity(), cursor, true, parent_view);
                course_list.setAdapter(adapter);
                adapter.notifyDataSetChanged();
            }
        });

        dataSource.close();

        return view;
    }

    // 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.course_frag_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.course_menu_addbtn:
                showChildFragment();
                return true;
            // Return false if the menu item has not been handled
            default:
                return false;
        }
    }

    private void showChildFragment() {

        FragmentManager fm = getFragmentManager();
        AddCourseFragment frag = new AddCourseFragment();
        FragmentTransaction transaction = fm.beginTransaction();

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

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

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

    //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
