我結束了使用SQLite數據庫中。下面是我實施的一些代碼，我將繼續更新，直到應用程序完成。
DBHANDLER
public class DatabaseHandler extends SQLiteOpenHelper {
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "scheduleManager";
// Contacts table name
private static final String TABLE_EVENTS = "events";
// Contacts Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_TITLE = "title";
private static final String KEY_TIME = "time";
private static final String KEY_DATE = "date";
private static final int KEY_DRW = 0;
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
String CREATE_EVENTS_TABLE = "CREATE TABLE " + TABLE_EVENTS + "("
+ KEY_ID + " INTEGER," + KEY_TITLE + " TEXT,"
+ KEY_TIME + " TEXT," + KEY_DATE + " TEXT" + ")";
db.execSQL(CREATE_EVENTS_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_EVENTS);
// Create tables again
onCreate(db);
}
/**
* All CRUD(Create, Read, Update, Delete) Operations
*/
//adding an event (NEEDS TO ADD DRAWABLE)
public void addEvent(Event event) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_ID, event.get_Id()); //Event ID
values.put(KEY_TITLE, event.get_title()); // Event Title
values.put(KEY_TIME, event.get_time()); // Event Time
values.put(KEY_DATE, event.get_date()); // Event Date
//values.put(KEY_DRW, event.get_drawable()); // Event Drawable
// Inserting Row
db.insert(TABLE_EVENTS, null, values);
db.close(); // Closing database connection
}
// Getting single contact
public Event getEvent(int id) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(TABLE_EVENTS, new String[] { KEY_ID,
KEY_TITLE, KEY_TIME, KEY_DATE }, KEY_ID + "=?",
new String[] { String.valueOf(id) }, null, null, null, null);
if (cursor != null)
cursor.moveToFirst();
Event event = new Event(Integer.parseInt(cursor.getString(0)),
cursor.getString(1), cursor.getString(2), null, null);
// return contact
return event;
}
// Getting All Contacts
public List<Event> getAllContacts() {
List<Event> eventList = new ArrayList<Event>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_EVENTS;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Event event = new Event();
event.set_Id(Integer.parseInt(cursor.getString(0)));
event.set_title(cursor.getString(1));
event.set_time(cursor.getString(2));
event.set_date(cursor.getString(3));
// Adding contact to list
eventList.add(event);
} while (cursor.moveToNext());
}
// return contact list
return eventList;
}
// Getting event Count
public int getEventsCount() {
String countQuery = "SELECT * FROM " + TABLE_EVENTS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(countQuery, null);
cursor.close();
// return count
return cursor.getCount();
}
// Updating single contact
public int updateEvent(Event event) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_TITLE, event.get_title());
values.put(KEY_TIME, event.get_time());
values.put(KEY_DATE, event.get_date());
// updating row
return db.update(TABLE_EVENTS, values, KEY_ID + " = ?",
new String[] { String.valueOf(event.get_Id()) });
}
// Deleting single contact
public void deleteEvent(Event event) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_EVENTS, KEY_ID + " = ?",
new String[] { String.valueOf(event.get_Id()) });
db.close();
}
}
MAINACTIVITY
public class MainActivity extends FragmentActivity implements OnClickListener {
ListView listView;
int lastIndex = -1;
ArrayList<Event> lstEvents = new ArrayList<Event>();
// detail view
TextView tvTitle, tvTime, tvDate;
ImageView ivPic;
View vw_master;
boolean _isBack = true;
ImageButton add;
String title;
String date;
String time;
int resId;
static final int PICK_CONTACT_REQUEST = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
// // get detail controls
tvTitle = (TextView) findViewById(R.id.textViewTitle);
tvDate = (TextView) findViewById(R.id.textViewDate);
tvTime = (TextView) findViewById(R.id.textViewTime);
ivPic = (ImageView) findViewById(R.id.imageView1);
add = (ImageButton) findViewById(R.id.add);
add.setOnClickListener(this);
/////////////////////////////////LISTVIEW////////////////////////////////////////
// Create the adapter to convert the array to views
EventAdapter adapter = new EventAdapter(this, lstEvents);
// attach adapter to a list view
listView = (ListView) findViewById(R.id.listViewFragment);
listView.setAdapter(adapter);
/////////////////////////////////LISTVIEW////////////////////////////////////////
// /////////////////////////////DATABASE/////////////////////////////////////////////
DatabaseHandler db = new DatabaseHandler(this);
// /////////////////////////////DATABASE/////////////////////////////////////////////
List<Event> events = db.getAllContacts();
adapter.addAll(events);
adapter.notifyDataSetChanged();
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.add:
Intent intent = new Intent(this, CreateActivity.class);
startActivityForResult(intent, 100);
break;
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// /////////////////////////////DATABASE/////////////////////////////////////////////
DatabaseHandler db = new DatabaseHandler(this);
// /////////////////////////////DATABASE/////////////////////////////////////////////
// Create the adapter to convert the array to views
EventAdapter adapter = new EventAdapter(this, lstEvents);
// attach adapter to a list view
listView = (ListView) findViewById(R.id.listViewFragment);
listView.setAdapter(adapter);
if (requestCode == 100) {
if (resultCode == RESULT_OK) {
Bundle b = data.getExtras();
title = b.getString("TITLE");
time = b.getString("TIME");
date = b.getString("DATE");
// retrieving bitmap from CreateActivity
Bitmap bitmap = (Bitmap) b.getParcelable("DRAWABLE");
// converting from bitmap to drawable
Drawable drawable = new BitmapDrawable(getResources(), bitmap);
// Event newEvent = new Event();
// newEvent.set_date(date);
// newEvent.set_title(title);
// newEvent.set_time(time);
// set drawable
// newEvent.set_drawable(drawable);
// lstEvents.add(newEvent);
// adapter.addAll(lstEvents);
// adapter.notifyDataSetChanged();
///////////////////////////////DATABASE/////////////////////////////////////////////
/**
* CRUD OPERATIONS
*/
Log.e("Insert: ", "Inserting ..");
db.addEvent(new Event(0, title, time, date, drawable));
// Reading all contacts
Log.e("Reading: ", "Reading all contacts..");
// List<Event> events = db.getAllContacts();
List<Event> events = db.getAllContacts();
adapter.addAll(events);
adapter.notifyDataSetChanged();
//logging all events
for (Event ev : events) {
String log = "Id: " + ev.get_Id() + " ,Title: "
+ ev.get_title() + " ,Date: " + ev.get_date();
// Writing Contacts to log
Log.e("Name: ", log);
}
///////////////////////////////DATABASE/////////////////////////////////////////////
}
}
}
}
我會退出應用程序，然後再重新短語的標題。 – user2672165