\uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c \ub370\uc774\ud130\ub97c \uacf5\uc720\ud558\uace0 \uc811\uadfc\ud558\uae30 \uc704\ud55c \ud6a8\uacfc\uc801\uc778 \ubc29\ubc95 \uc911 \ud558\ub098\ub294 \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354(Content Provider)\uc785\ub2c8\ub2e4. \uc774 \uac15\uc88c\uc5d0\uc11c\ub294 \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\uc758 \uac1c\ub150, \uc791\ub3d9 \uc6d0\ub9ac, \uadf8\ub9ac\uace0 \uc2e4\uc81c \uad6c\ud604 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<\/header>\n \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uac04\uc5d0 \ub370\uc774\ud130\ub97c \uacf5\uc720\ud558\uace0 \uc811\uadfc\ud560 \uc218 \uc788\ub3c4\ub85d \ub3c4\uc640\uc8fc\ub294 \ucef4\ud3ec\ub10c\ud2b8\uc785\ub2c8\ub2e4. \uc8fc\ub85c \ub370\uc774\ud130\ubca0\uc774\uc2a4, \ud30c\uc77c, \uc6f9 \uc11c\ube44\uc2a4 \ub4f1 \ub2e4\uc591\ud55c \ub370\uc774\ud130 \uc18c\uc2a4\ub97c \ud1b5\ud574 \ub370\uc774\ud130\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ub2e4\uc591\ud55c \uc571\uc774 \ub3d9\uc77c\ud55c \ub370\uc774\ud130\uc5d0 \uc811\uadfc\ud558\uac70\ub098 \uc870\uc791\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub294 URI(Uniform Resource Identifier)\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130\ub97c \uc2dd\ubcc4\ud558\uace0, \ub370\uc774\ud130\uc758 CRUD(Create, Read, Update, Delete) \uc791\uc5c5\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc\uc758 \ucef4\ud3ec\ub10c\ud2b8 \ubaa8\ub378\uc5d0 \uc18d\ud558\ub294 \ud074\ub798\uc2a4\uc774\uba70, \uc77c\ubc18\uc801\uc73c\ub85c \uc774\uc81c \uc9c1\uc811 \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub97c \uad6c\ud604\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc774 \uc608\uc81c\uc5d0\uc11c\ub294 \uac04\ub2e8\ud55c \uc5f0\ub77d\ucc98 \ub370\uc774\ud130\ub97c \ub2e4\ub8e8\ub294 \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub97c \ub9cc\ub4e4\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n SQLite \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc5f0\ub77d\ucc98 \uc815\ubcf4\ub97c \uc800\uc7a5\ud569\ub2c8\ub2e4. \uba3c\uc800 \uc774\uc81c \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354 \ud074\ub798\uc2a4\ub97c \uc791\uc131\ud569\ub2c8\ub2e4. \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ub9e4\ub2c8\ud398\uc2a4\ud2b8 \ud30c\uc77c\uc5d0\uc11c \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub97c \ub4f1\ub85d\ud569\ub2c8\ub2e4.<\/p>\n \uc774\uc81c \uc571\uc758 \ub2e4\ub978 \ubd80\ubd84\uc5d0\uc11c \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub2e4\uc74c\uc740 \uc5f0\ub77d\ucc98\ub97c \ucd94\uac00\ud558\uace0 \uc870\ud68c\ud558\ub294 \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\n \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\uc758 \uc7a5\uc810\uacfc \ub2e8\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c \ub370\uc774\ud130 \uacf5\uc720 \ubc0f \uc561\uc138\uc2a4\ub97c \uc704\ud55c \uac15\ub825\ud55c \ub3c4\uad6c\uc785\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ub2e4\ub978 \uc571\uacfc\uc758 \uc5f0\ub3d9 \ubc0f \ub370\uc774\ud130\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \uad00\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\ub97c \ud1b5\ud574 \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\uc758 \uac1c\ub150\uacfc \uad6c\ud604 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc798 \uc774\ud574\ud560 \uc218 \uc788\uc5c8\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4. \uc774\uc81c \ub354 \ubcf5\uc7a1\ud55c \uc571 \uac1c\ubc1c\uc5d0\uc11c \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub97c \ud65c\uc6a9\ud574 \ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n<\/section>\n1. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub780?<\/h2>\n
2. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\uc758 \uad6c\uc870<\/h2>\n
ContentProvider<\/code> \ud074\ub798\uc2a4\ub97c \uc0c1\uc18d\ubc1b\uc544\uc11c \uad6c\ud604\ub429\ub2c8\ub2e4. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\ub294 \uc5ec\ub7ec \uba54\uc11c\ub4dc\ub97c \uc624\ubc84\ub77c\uc774\ub4dc\ud558\uc5ec \ub2e4\uc591\ud55c \ub370\uc774\ud130 \uc791\uc5c5\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc8fc\uc694 \uba54\uc11c\ub4dc\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n
onCreate()<\/code>: \ud504\ub85c\ubc14\uc774\ub354\uac00 \ucc98\uc74c \uc0dd\uc131\ub420 \ub54c \ud638\ucd9c\ub429\ub2c8\ub2e4. \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ucd08\uae30\ud654\uc640 \uac19\uc740 \uc124\uc815 \uc791\uc5c5\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/li>\nquery()<\/code>: \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\uc11c \ub370\uc774\ud130\ub97c \uc870\ud68c\ud560 \ub54c \ud638\ucd9c\ub429\ub2c8\ub2e4. \uacb0\uacfc\ub294 Cursor<\/code> \uac1d\uccb4\ub85c \ubc18\ud658\ub429\ub2c8\ub2e4.<\/li>\ninsert()<\/code>: \uc0c8\ub85c\uc6b4 \ub370\uc774\ud130\ub97c \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \ucd94\uac00\ud560 \ub54c \ud638\ucd9c\ub429\ub2c8\ub2e4.<\/li>\nupdate()<\/code>: \uae30\uc874 \ub370\uc774\ud130\ub97c \uc218\uc815\ud560 \ub54c \ud638\ucd9c\ub429\ub2c8\ub2e4.<\/li>\ndelete()<\/code>: \ub370\uc774\ud130\ub97c \uc0ad\uc81c\ud560 \ub54c \ud638\ucd9c\ub429\ub2c8\ub2e4.<\/li>\ngetType()<\/code>: \uc8fc\uc5b4\uc9c4 URI\uc5d0 \ub300\ud55c MIME \ud0c0\uc785\uc744 \ubc18\ud658\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/section>\n3. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354 \uad6c\ud604\ud558\uae30<\/h2>\n
3.1. \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubaa8\ub378 \uc815\uc758<\/h3>\n
Contact<\/code> \ud074\ub798\uc2a4\uc640 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud5ec\ud37c \ud074\ub798\uc2a4\ub97c \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\njava\npublic class Contact {\n public static final String TABLE_NAME = \"contacts\";\n public static final String COLUMN_ID = \"_id\";\n public static final String COLUMN_NAME = \"name\";\n public static final String COLUMN_PHONE = \"phone\";\n}\n<\/code><\/pre>\njava\npublic class DatabaseHelper extends SQLiteOpenHelper {\n private static final String DATABASE_NAME = \"Contacts.db\";\n private static final int DATABASE_VERSION = 1;\n\n public DatabaseHelper(Context context) {\n super(context, DATABASE_NAME, null, DATABASE_VERSION);\n }\n\n @Override\n public void onCreate(SQLiteDatabase db) {\n String CREATE_CONTACTS_TABLE = \"CREATE TABLE \" + Contact.TABLE_NAME + \"(\"\n + Contact.COLUMN_ID + \" INTEGER PRIMARY KEY AUTOINCREMENT, \"\n + Contact.COLUMN_NAME + \" TEXT, \"\n + Contact.COLUMN_PHONE + \" TEXT\" + \")\";\n db.execSQL(CREATE_CONTACTS_TABLE);\n }\n\n @Override\n public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {\n db.execSQL(\"DROP TABLE IF EXISTS \" + Contact.TABLE_NAME);\n onCreate(db);\n }\n}\n<\/code><\/pre>\n3.2. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354 \ud074\ub798\uc2a4 \uc815\uc758<\/h3>\n
ContentProvider<\/code>\ub97c \uc0c1\uc18d\ubc1b\uc544 \ub2e4\uc591\ud55c \uba54\uc11c\ub4dc\ub97c \uc624\ubc84\ub77c\uc774\ub4dc\ud569\ub2c8\ub2e4.<\/p>\njava\npublic class ContactProvider extends ContentProvider {\n private static final String AUTHORITY = \"com.example.contactprovider\";\n private static final String BASE_PATH = \"contacts\";\n public static final Uri CONTENT_URI = Uri.parse(\"content:\/\/\" + AUTHORITY + \"\/\" + BASE_PATH);\n\n private DatabaseHelper databaseHelper;\n\n @Override\n public boolean onCreate() {\n databaseHelper = new DatabaseHelper(getContext());\n return true;\n }\n\n @Override\n public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {\n SQLiteDatabase db = databaseHelper.getReadableDatabase();\n Cursor cursor = db.query(Contact.TABLE_NAME, projection, selection, selectionArgs, null, null, sortOrder);\n cursor.setNotificationUri(getContext().getContentResolver(), uri);\n return cursor;\n }\n\n @Override\n public Uri insert(Uri uri, ContentValues values) {\n SQLiteDatabase db = databaseHelper.getWritableDatabase();\n long id = db.insert(Contact.TABLE_NAME, null, values);\n getContext().getContentResolver().notifyChange(uri, null);\n return ContentUris.withAppendedId(CONTENT_URI, id);\n }\n\n @Override\n public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {\n SQLiteDatabase db = databaseHelper.getWritableDatabase();\n int rowsUpdated = db.update(Contact.TABLE_NAME, values, selection, selectionArgs);\n getContext().getContentResolver().notifyChange(uri, null);\n return rowsUpdated;\n }\n\n @Override\n public int delete(Uri uri, String selection, String[] selectionArgs) {\n SQLiteDatabase db = databaseHelper.getWritableDatabase();\n int rowsDeleted = db.delete(Contact.TABLE_NAME, selection, selectionArgs);\n getContext().getContentResolver().notifyChange(uri, null);\n return rowsDeleted;\n }\n\n @Override\n public String getType(Uri uri) {\n return \"vnd.android.cursor.dir\/vnd.\" + AUTHORITY + \".\" + BASE_PATH;\n }\n}\n<\/code><\/pre>\n3.3. \ub9e4\ub2c8\ud398\uc2a4\ud2b8 \ud30c\uc77c \uc218\uc815<\/h3>\n
<provider\n android:name=\".ContactProvider\"\n android:authorities=\"com.example.contactprovider\"\n android:exported=\"true\" \/>\n<\/code><\/pre>\n<\/section>\n4. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354 \uc0ac\uc6a9\ud558\uae30<\/h2>\n
java\n\/\/ \uc5f0\ub77d\ucc98 \ucd94\uac00\ud558\uae30\nContentValues values = new ContentValues();\nvalues.put(Contact.COLUMN_NAME, \"\ud64d\uae38\ub3d9\");\nvalues.put(Contact.COLUMN_PHONE, \"010-1234-5678\");\nUri newContactUri = getContentResolver().insert(ContactProvider.CONTENT_URI, values);\n\n\/\/ \uc5f0\ub77d\ucc98 \uc870\ud68c\ud558\uae30\nCursor cursor = getContentResolver().query(ContactProvider.CONTENT_URI, null, null, null, null);\nif (cursor != null && cursor.moveToFirst()) {\n do {\n String name = cursor.getString(cursor.getColumnIndex(Contact.COLUMN_NAME));\n String phone = cursor.getString(cursor.getColumnIndex(Contact.COLUMN_PHONE));\n Log.d(\"Contact\", \"Name: \" + name + \", Phone: \" + phone);\n } while (cursor.moveToNext());\n cursor.close();\n}\n<\/code><\/pre>\n<\/section>\n5. \ucf58\ud150\uce20 \ud504\ub85c\ubc14\uc774\ub354\uc758 \uc7a5\uc810\uacfc \ub2e8\uc810<\/h2>\n
\uc7a5\uc810<\/h3>\n
\n
\ub2e8\uc810<\/h3>\n
\n
6. \uacb0\ub860<\/h2>\n