我制作了一个程序，其中我获取所有 Facebook 好友的列表，因为他们的生日以 1 月到 12 月的形式出现，所以在这里我获取所有 Facebook 好友的生日，他们也已经过去了，现在我只想显示所有即将到来的生日的列表。
MyLocalDB.java
public class MyLocalDB {
private static final String DATABASE_NAME = "bdrem";
private static final String TABLE_FRIEND = "friend";
private static final String TABLE_FRIEND_TEMP = "friend_temp";
private static final String TABLE_SETTINGS = "settings";
private static final int DATABASE_VERSION = 4;
public static final String KEY_ID = "friendID";
public static final int ID_COLUMN = 0;
// The name and column index of each column in friend's table
public static final String KEY_FBID = "facebookID";
public static final int FBID_COLUMN = 1;
public static final String KEY_NAME = "name";
public static final int NAME_COLUMN = 2;
public static final String KEY_BIRTHDAY = "birthday";
public static final int BIRTHDAY_COLUMN = 3;
public static final String KEY_PIC = "picture";
public static final int PIC_COLUMN = 4;
public static final String KEY_BDAYMESSAGE = "message";
public static final int BDAYMESSAGE_COLUMN = 5;
public static final String KEY_AUTOPOST = "autopost";
public static final int AUTOPOST_COLUMN = 6;
// The name and column index of each column in setting's table
public static final String KEY_SETTINGS_ID = "settingsId";
public static final String KEY_SETTINGS_VALUE = "settingsValue";
public static final int SETTINGS_KEY_COLUMN = 0;
public static final int SETTINGS_VALUE_COLUMN = 1;
private static final String SETTINGS_CREATE = "create table "
+ TABLE_SETTINGS + " ( " + KEY_SETTINGS_ID + " varchar(255), "
+ KEY_SETTINGS_VALUE + " varchar(255)" + " );";
private static final String FRIENDS_CREATE = "create table " + TABLE_FRIEND
+ " (" + KEY_ID + " integer primary key autoincrement, " + KEY_FBID
+ " int, " + KEY_NAME + " varchar(50)," + KEY_BIRTHDAY
+ " varchar(25), " + KEY_PIC + " varchar(255)," + KEY_BDAYMESSAGE
+ " varchar(255), " + KEY_AUTOPOST + " varchar(10)" + " );";
private static final String FRIENDS_TEMP_CREATE = "create table "
+ TABLE_FRIEND_TEMP + " (" + KEY_ID
+ " integer primary key autoincrement, " + KEY_FBID + " int, "
+ KEY_NAME + " varchar(50)," + KEY_BIRTHDAY + " varchar(25), "
+ KEY_PIC + " varchar(255)," + KEY_BDAYMESSAGE + " varchar(255), "
+ KEY_AUTOPOST + " varchar(10)" + " );";
private SQLiteDatabase localDB;
// private final Context context;
private LocalDBHelper dbHelper;
public MyLocalDB(Context context) {
// this.context = context;
this.dbHelper = new LocalDBHelper(context, DATABASE_NAME, null,
DATABASE_VERSION);
}
public void open() throws SQLException {
localDB = dbHelper.getWritableDatabase();
}
private static class LocalDBHelper extends SQLiteOpenHelper {
public LocalDBHelper(Context context, String name,
CursorFactory factory, int version) {
super(context, name, factory, version);
}
@Override
public void onCreate(SQLiteDatabase db) {
Log.d(TAG, "DB create");
db.execSQL(FRIENDS_CREATE);
db.execSQL(SETTINGS_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.d(TAG, "Upgrading from " + oldVersion + " to " + newVersion
+ ", which may destroy all the old data.");
// Drop the old table
db.execSQL("DROP TABLE IF EXISTS " + TABLE_FRIEND);
db.execSQL("DROP TABLE IF EXISTS " + TABLE_FRIEND_TEMP);
db.execSQL("DROP TABLE IF EXISTS " + TABLE_SETTINGS);
// Create a new one
onCreate(db);
}
}
// Local storage should have one table for key-value pair
public String getSettings(String settingsKey) {
String settingsValue = "";
try {
Cursor settings = localDB.query(true, TABLE_SETTINGS, null,
KEY_SETTINGS_ID + " = ?", new String[] { settingsKey },
null, null, null, null);
if ((settings.getCount() == 0) || !settings.moveToNext()) {
return "";
}
settingsValue = settings.getString(SETTINGS_VALUE_COLUMN);
} catch (SQLiteException ex) {
Log.d(TAG, ex.getMessage());
}
Log.v(TAG, "setting: " + settingsValue);
return settingsValue;
}
public void setSettings(String key, String value) {
Log.d(TAG, key + ", " + value);
try {
localDB.execSQL("delete from " + TABLE_SETTINGS + " where "
+ KEY_SETTINGS_ID + " = '" + key + "';");
localDB.execSQL("insert into " + TABLE_SETTINGS + " values ('"
+ key + "', '" + value + "');");
} catch (SQLiteException ex) {
Log.d(TAG, ex.getMessage());
}
}
public List<MyFriend> getAllFriends() {
return getFriendsFilteredBy(null);
}
public MyFriend getFriendByFbID(String facebookId) {
Cursor friendResults = localDB.query(false, TABLE_FRIEND, null,
KEY_FBID + "=" + facebookId, null, null, null, null, null);
if ((friendResults.getCount() == 0) || !friendResults.moveToNext()) { //First
return null;
}
MyFriend friend = new MyFriend();
friend.setBdayMessage(friendResults.getString(BDAYMESSAGE_COLUMN));
friend.setAutoPost(Boolean.valueOf(friendResults
.getString(AUTOPOST_COLUMN)));
return friend;
}
public List<MyFriend> getFriendsFilteredBy(Filter filterBy) {
List<MyFriend> friends = new ArrayList<MyFriend>();
String[] resultColumns = new String[] { KEY_ID, KEY_FBID, KEY_NAME,
KEY_BIRTHDAY, KEY_PIC, KEY_BDAYMESSAGE, KEY_AUTOPOST };
String selection = null;
String[] selectionArgs = null;
String orderBy = KEY_BIRTHDAY;
if (filterBy != null) {
switch (filterBy) {
case MONTH:
selection = KEY_BIRTHDAY + " LIKE ?";
selectionArgs = new String[1];
selectionArgs[0] = MyUtils.getCurrentMonth() + "%";
orderBy = KEY_BIRTHDAY;
Log.v(TAG, "localdb.month- " + selectionArgs[0]);
break;
case WEEK:
selection = KEY_BIRTHDAY + " >= ? and " + KEY_BIRTHDAY
+ " <= ?";
selectionArgs = new String[2];
selectionArgs[0] = MyUtils.getCurrentMonth() + "/"
+ MyUtils.getCurrentWeekDays()[0];
selectionArgs[1] = MyUtils.getCurrentMonth() + "/"
+ MyUtils.getCurrentWeekDays()[1];
orderBy = KEY_BIRTHDAY;
Log.v(TAG, "localdb.week- " + selectionArgs[0] + ","
+ selectionArgs[1]);
break;
case DAY:
selection = KEY_BIRTHDAY + " LIKE ?";
selectionArgs = new String[1];
selectionArgs[0] = MyUtils.getCurrentMonth() + "/"
+ MyUtils.getCurrentWeekDays()[0] + "%";
selectionArgs[0] = "12/23%";
Log.v(TAG, "localdb.day- " + selectionArgs[0]);
break;
default:
break;
}
}
/*
* TESTING else{ selection = "name LIKE ?"; selectionArgs = new
* String[1]; selectionArgs[0] = "%aad%"; }
*/
Cursor allRows = localDB.query(false, TABLE_FRIEND, resultColumns,
selection, selectionArgs, null, null, orderBy, null);
if (allRows.moveToNext()) {
do {
String fbId = allRows.getString(FBID_COLUMN);
String name = allRows.getString(NAME_COLUMN);
String birthday = allRows.getString(BIRTHDAY_COLUMN);
String picture = allRows.getString(PIC_COLUMN);
String message = allRows.getString(BDAYMESSAGE_COLUMN);
boolean isAutoPost = allRows.getString(AUTOPOST_COLUMN).equals(
"false") ? false : true;
MyFriend friend = new MyFriend(fbId, name, birthday, picture,
message, isAutoPost);
friends.add(friend);
} while (allRows.moveToNext()); //Next
}
return friends;
}
public Report syncFriends(List<MyFriend> friends) {
Log.v(TAG, "mylocaldb.syncfriends Sync started!" + friends.size());
localDB.execSQL("DROP TABLE IF EXISTS " + TABLE_FRIEND_TEMP);
localDB.execSQL(FRIENDS_TEMP_CREATE);
for (MyFriend friend : friends) {
insertFriend(friend, TABLE_FRIEND_TEMP);
}
localDB.execSQL("update " + TABLE_FRIEND_TEMP
+ " set message = (select message from " + TABLE_FRIEND
+ " where " + TABLE_FRIEND + ".facebookID = "
+ TABLE_FRIEND_TEMP + ".facebookID)");
localDB.execSQL("update " + TABLE_FRIEND_TEMP
+ " set message = ' ' where message is null;");
localDB.execSQL("update " + TABLE_FRIEND_TEMP
+ " set autopost = (select autopost from " + TABLE_FRIEND
+ " where " + TABLE_FRIEND + ".facebookID = "
+ TABLE_FRIEND_TEMP + ".facebookID)");
localDB.execSQL("update " + TABLE_FRIEND_TEMP
+ " set autopost = 'false' where autopost is null;");
localDB.execSQL("DROP TABLE IF EXISTS " + TABLE_FRIEND);
localDB.execSQL("ALTER TABLE " + TABLE_FRIEND_TEMP + " RENAME to "
+ TABLE_FRIEND);
friends.clear();
friends = getAllFriends();
Log.v(TAG, "mylocaldb.syncfriends Sync finished." + friends.size());
return new Report(true, "Friends Synced");
}
public Report storeFriends(List<MyFriend> friends) {
int count = 0;
for (MyFriend friend : friends) {
if (storeFriend(friend).isSuccess == true) {
count++;
}
}
if (count == friends.size()) {
return new Report(true, count + " friends stored.");
} else {
return new Report(false, "Only " + count + " friends stored.");
}
}
public Report storeFriend(MyFriend friend) {
Cursor friendResults = localDB.query(false, TABLE_FRIEND, new String[] {
KEY_ID, KEY_FBID }, KEY_FBID + "=" + friend.getFbID(), null,
null, null, null, null);
Report report = null;
// If friend doesn't exist, insert it
if ((friendResults.getCount() == 0) || !friendResults.moveToNext()) {
report = insertFriend(friend);
return report;
}
// If friend exists, update it
else {
long rowId = friendResults.getLong(ID_COLUMN);
String message = friend.getBdayMessage();
boolean isAutoPost = friend.isAutoPost();
report = saveMessage(rowId, message, isAutoPost);
report = updateFriend(rowId, friend);
return report;
}
}
// Insert friend in database
public Report insertFriend(MyFriend friend) {
return insertFriend(friend, TABLE_FRIEND);
}
public Report insertFriend(MyFriend friend, String tableName) {
ContentValues newFriend = new ContentValues();
newFriend.put(KEY_FBID, friend.getFbID());
newFriend.put(KEY_NAME, friend.getName());
newFriend.put(KEY_BIRTHDAY, friend.getBday());
newFriend.put(KEY_PIC, friend.getPic());
newFriend.put(KEY_BDAYMESSAGE, friend.getBdayMessage());
boolean isAutoPost = friend.isAutoPost();
if (isAutoPost) {
newFriend.put(KEY_AUTOPOST, "true");
} else
newFriend.put(KEY_AUTOPOST, "false");
try {
localDB.insert(tableName, null, newFriend);
} catch (SQLiteException ex) {
return new Report(false, ex.getMessage());
}
return new Report(true, "Friend inserted successfully!");
}
// Update friend in database
public Report updateFriend(long rowId, MyFriend friend) {
ContentValues updatedFriend = new ContentValues();
updatedFriend.put(KEY_FBID, friend.getFbID());
updatedFriend.put(KEY_NAME, friend.getName());
updatedFriend.put(KEY_BIRTHDAY, friend.getBday());
updatedFriend.put(KEY_PIC, friend.getPic());
updatedFriend.put(KEY_BDAYMESSAGE, friend.getBdayMessage());
boolean isAutoPost = friend.isAutoPost();
if (isAutoPost) {
updatedFriend.put(KEY_AUTOPOST, "true");
} else
updatedFriend.put(KEY_AUTOPOST, "false");
try {
String where = KEY_ID + "=" + rowId;
localDB.update(TABLE_FRIEND, updatedFriend, where, null);
} catch (SQLiteException ex) {
return new Report(false, ex.getMessage());
}
return new Report(true, "Friend is updated successfully!");
}
public Report saveMessage(long rowId, String message, boolean isAutoPost) {
ContentValues updatedFriend = new ContentValues();
updatedFriend.put(KEY_BDAYMESSAGE, message);
if (isAutoPost) {
updatedFriend.put(KEY_AUTOPOST, "true");
} else
updatedFriend.put(KEY_AUTOPOST, "false");
try {
String where = KEY_ID + "=" + rowId;
localDB.update(TABLE_FRIEND, updatedFriend, where, null);
} catch (SQLiteException ex) {
return new Report(false, ex.getMessage());
}
return new Report(true, "Friend is updated successfully!");
}
public Report saveMessageByFbID(String ID, String message,
boolean isAutoPost) {
ContentValues updatedFriend = new ContentValues();
updatedFriend.put(KEY_BDAYMESSAGE, message);
updatedFriend.put(KEY_AUTOPOST, isAutoPost ? "true" : "false");
try {
String where = KEY_FBID + " = ?";
localDB.update(TABLE_FRIEND, updatedFriend, where,
new String[] { ID });
} catch (SQLiteException ex) {
return new Report(false, ex.getMessage());
}
return new Report(true, "Friend is updated successfully!");
}
public Report removeFriend(long rowId) {
String where = KEY_ID + "=" + rowId;
try {
localDB.delete(TABLE_FRIEND, where, null);
} catch (SQLiteException ex) {
return new Report(false, ex.getMessage());
}
return new Report(false, "Friend is removed successfully!");
}
public void close() {
localDB.close();
}
}
最佳答案
这里没有什么难的。使用图形 API:
- 获取您的用户出生日期:
/YOUR_ID?fields=friends.fields(birthday)。 - 根据每个人的生日和月份对日期进行排序。
- 获取当前日期并显示以下出生日期。
关于java - 如何获取所有 facebook 好友即将到来的生日列表，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13971903/