Android Open Source - Android-CriminalIntent Crime List Fragment






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License

The source code is released under:

MIT License

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Java Source Code

package com.bignerdranch.android.criminalintent;
/* w w w .  jav a 2  s.c om*/
import android.annotation.TargetApi;
import android.content.Context;
import android.content.Intent;
import android.hardware.SensorManager;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.ActionMode;
import android.view.ContextMenu;
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.AbsListView;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.squareup.seismic.ShakeDetector;

import java.util.ArrayList;
import java.util.Collections;

/**
 * A fragment representing a list of Items.
 * <p />
 * <p />
 * Activities containing this fragment MUST implement the {@link Callbacks}
 * interface.
 */
public class CrimeListFragment extends ListFragment implements ShakeDetector.Listener {

    private static final String TAG = CrimeListFragment.class.getSimpleName();
    private ArrayList<Crime> mCrimes;
    private boolean mSubtitleVisible;

    /**
     * Mandatory empty constructor for the fragment manager to instantiate the
     * fragment (e.g. upon screen orientation changes).
     */
    public CrimeListFragment() {
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        SensorManager sensorManager = (SensorManager) getActivity().getSystemService(Context.SENSOR_SERVICE);
        ShakeDetector shakeDetector = new ShakeDetector(this);
        shakeDetector.start(sensorManager);

        setHasOptionsMenu(true);
        getActivity().setTitle(R.string.crimes_title);
        mCrimes = CrimeLab.get(getActivity()).getCrimes();

        CrimeAdapter adapter = new CrimeAdapter(mCrimes);
        setListAdapter(adapter);

        setRetainInstance(true);
        mSubtitleVisible = false;
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_crime_list, container, false);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            if (mSubtitleVisible) {
                getActivity().getActionBar().setSubtitle(R.string.subtitle);
            }
        }

        ListView listView = (ListView) view.findViewById(android.R.id.list);

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
            // pre-Honeycomb gets the floating context menu
            registerForContextMenu(listView);
        } else {
            // Honeycomb+ gets the contextual actionBar
            listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
            listView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
                @Override
                public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
                    // Required, but not used in this implementation
                }

                @Override
                public boolean onCreateActionMode(ActionMode mode, Menu menu) {
                    MenuInflater inflater = mode.getMenuInflater();
                    inflater.inflate(R.menu.crime_list_item_context, menu);
                    return true;
                }

                @Override
                public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
                    // Required, but not used in this implementation
                    return false;
                }

                @Override
                public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
                    switch (item.getItemId()) {
                        case R.id.menu_item_delete_crime:
                            CrimeAdapter adapter = (CrimeAdapter) getListAdapter();
                            CrimeLab crimeLab = CrimeLab.get(getActivity());
                            for (int i = adapter.getCount() - 1; i >= 0; i--) {
                                if (getListView().isItemChecked(i)) {
                                    crimeLab.delete(adapter.getItem(i));
                                }
                            }
                            mode.finish();
                            adapter.notifyDataSetChanged();
                            return true;
                        default:
                            return false;
                    }
                }

                @Override
                public void onDestroyActionMode(ActionMode mode) {
                    // Required, but not used in this implementation
                }
            });
        }

        return view;
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        inflater.inflate(R.menu.fragment_crime_list, menu);
        MenuItem showSubtitle = menu.findItem(R.id.menu_item_show_subtitle);
        if (mSubtitleVisible && showSubtitle != null) {
            showSubtitle.setTitle(R.string.hide_subtitle);
        }
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        getActivity().getMenuInflater().inflate(R.menu.crime_list_item_context, menu);
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
        int position = info.position;
        CrimeAdapter adapter = (CrimeAdapter) getListAdapter();
        Crime crime = adapter.getItem(position);

        switch (item.getItemId()) {
            case R.id.menu_item_delete_crime:
                CrimeLab.get(getActivity()).delete(crime);
                adapter.notifyDataSetChanged();
                return true;
        }

        return super.onContextItemSelected(item);
    }

    @Override
    public void onResume() {
        super.onResume();
        ((CrimeAdapter)getListAdapter()).notifyDataSetChanged();
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menu_item_new_crime:
                Crime crime = new Crime();
                CrimeLab.get(getActivity()).add(crime);
                Intent intent = new Intent(getActivity(), CrimePagerActivity.class);
                intent.putExtra(CrimeFragment.EXTRA_CRIME_ID, crime.getId());
                startActivity(intent);
                return true;
            case R.id.menu_item_show_subtitle:
                if (getActivity().getActionBar().getSubtitle() == null) {
                    getActivity().getActionBar().setSubtitle(R.string.subtitle);
                    mSubtitleVisible = true;
                    item.setTitle(R.string.hide_subtitle);
                } else {
                    getActivity().getActionBar().setSubtitle(null);
                    mSubtitleVisible = false;
                    item.setTitle(R.string.show_subtitle);
                }
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        Crime c = ((CrimeAdapter)getListAdapter()).getItem(position);

        Intent i = new Intent(getActivity(), CrimePagerActivity.class);
        i.putExtra(CrimeFragment.EXTRA_CRIME_ID, c.getId());
        startActivity(i);
    }

    @Override
    public void hearShake() {
        Collections.shuffle(mCrimes);
        ((CrimeAdapter)getListAdapter()).notifyDataSetChanged();
        Context context = ((CrimeAdapter) getListAdapter()).getContext();
        Toast.makeText(context, R.string.shake_confirmation, Toast.LENGTH_SHORT).show();
    }

    private class CrimeAdapter extends ArrayAdapter<Crime> {

        public CrimeAdapter(ArrayList<Crime> crimes) {
            super(getActivity(), 0, crimes);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // if we aren't passed a view to recycle, inflate a new view
            if (convertView == null) {
                convertView = getActivity().getLayoutInflater().inflate(R.layout.list_item_crime, null);
            }

            // Configure the view for this Crime
            Crime c = getItem(position);

            TextView titleTextView  = (TextView) convertView.findViewById(R.id.crime_list_item_titleTextView);
            TextView dateTextView   = (TextView) convertView.findViewById(R.id.crime_list_item_dateTextView);
            CheckBox solvedCheckBox = (CheckBox) convertView.findViewById(R.id.crime_list_item_solvedCheckBox);

            titleTextView.setText(c.getTitle());
            dateTextView.setText(c.getDate().toString());
            solvedCheckBox.setChecked(c.isSolved());

            return convertView;
        }
    }
}




Java Source Code List

com.bignerdranch.android.criminalintent.CrimeCameraActivity.java
com.bignerdranch.android.criminalintent.CrimeCameraFragment.java
com.bignerdranch.android.criminalintent.CrimeFragment.java
com.bignerdranch.android.criminalintent.CrimeLab.java
com.bignerdranch.android.criminalintent.CrimeListActivity.java
com.bignerdranch.android.criminalintent.CrimeListFragment.java
com.bignerdranch.android.criminalintent.CrimePagerActivity.java
com.bignerdranch.android.criminalintent.Crime.java
com.bignerdranch.android.criminalintent.CriminalIntentJSONSerializer.java
com.bignerdranch.android.criminalintent.DatePickerFragment.java
com.bignerdranch.android.criminalintent.ImageFragment.java
com.bignerdranch.android.criminalintent.Photo.java
com.bignerdranch.android.criminalintent.PictureUtils.java
com.bignerdranch.android.criminalintent.SingleFragmentActivity.java
com.bignerdranch.android.criminalintent.dummy.DummyContent.java