Java tutorial
package net.bible.android.view.activity.footnoteandref; import java.util.ArrayList; import java.util.List; import net.bible.android.activity.R; import net.bible.android.control.ControlFactory; import net.bible.android.control.footnoteandref.FootnoteAndRefControl; import net.bible.android.view.activity.base.ListActivityBase; import net.bible.android.view.util.swipe.SwipeGestureEventHandler; import net.bible.android.view.util.swipe.SwipeGestureListener; import net.bible.service.format.Note; import org.apache.commons.lang.StringUtils; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.util.Log; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.View; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; /** Show Notes and Cross references for the current verse * * @author Martin Denham [mjdenham at gmail dot com] * @see gnu.lgpl.License for license details.<br> * The copyright to this program is held by it's author. */ public class FootnoteAndRefActivity extends ListActivityBase implements SwipeGestureEventHandler { private static final String TAG = "NotesActivity"; private TextView mWarning; static final protected String LIST_ITEM_LINE1 = "line1"; static final protected String LIST_ITEM_LINE2 = "line2"; private List<Note> mChapterNotesList; private List<Note> mVerseNotesList; private ArrayAdapter<Note> mNotesListAdapter; // detect swipe left/right private GestureDetector gestureDetector; private FootnoteAndRefControl footnoteAndRefControl = ControlFactory.getInstance().getFootnoteAndRefControl(); private static final int LIST_ITEM_TYPE = android.R.layout.simple_list_item_2; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.i(TAG, "Displaying notes"); setContentView(R.layout.notes); mWarning = (TextView) findViewById(R.id.warningText); mChapterNotesList = footnoteAndRefControl.getCurrentPageFootnotesAndReferences(); //TODO: remove this redundant stuff - DataPipe.getInstance().popNotes(); initialiseView(); // create gesture related objects gestureDetector = new GestureDetector(new SwipeGestureListener(this)); } private void initialiseView() { mVerseNotesList = new ArrayList<Note>(); showCurrentVerse(); populateVerseNotesList(); prepareWarningMsg(); mNotesListAdapter = new ItemAdapter(this, LIST_ITEM_TYPE, mVerseNotesList); setListAdapter(mNotesListAdapter); } @Override protected void onListItemClick(ListView l, View v, int position, long id) { noteSelected(mVerseNotesList.get(position)); } /** swiped left */ public void onNext() { Log.d(TAG, "Next"); footnoteAndRefControl.next(); onVerseChanged(); } /** swiped right */ public void onPrevious() { Log.d(TAG, "Previous"); footnoteAndRefControl.previous(); onVerseChanged(); } private void onVerseChanged() { showCurrentVerse(); populateVerseNotesList(); notifyDataSetChanged(); prepareWarningMsg(); } private void populateVerseNotesList() { mVerseNotesList.clear(); int verseNo = footnoteAndRefControl.getVerse().getVerse(); if (mChapterNotesList != null) { for (Note note : mChapterNotesList) { if (note.getVerseNo() == verseNo) { mVerseNotesList.add(note); } } } } private void prepareWarningMsg() { String warning = ""; if (mChapterNotesList == null || mChapterNotesList.size() == 0) { warning = getString(R.string.no_chapter_notes); } else if (mChapterNotesList == null || mVerseNotesList.size() == 0) { warning = getString(R.string.no_verse_notes); } mWarning.setText(warning); if (StringUtils.isNotEmpty(warning)) { mWarning.setVisibility(View.VISIBLE); getListView().setVisibility(View.GONE); } else { mWarning.setVisibility(View.GONE); getListView().setVisibility(View.VISIBLE); } } private void showCurrentVerse() { setTitle(footnoteAndRefControl.getTitle()); } private void noteSelected(Note note) { Log.i(TAG, "chose:" + note); if (note.isNavigable()) { note.navigateTo(); } doFinish(); } public void onFinish(View v) { Log.i(TAG, "CLICKED"); doFinish(); } public void doFinish() { Intent resultIntent = new Intent(); setResult(Activity.RESULT_OK, resultIntent); finish(); } // handle swipe left and right @Override public boolean dispatchTouchEvent(MotionEvent motionEvent) { this.gestureDetector.onTouchEvent(motionEvent); return super.dispatchTouchEvent(motionEvent); } }