Android ContentProvider 기반 요약 정보
content://media/internal/images URI
content://contacts/people/ URI
content://contacts/people/45 URI （ ID 45 ）
package com.wissen.testApp;
public class ContentProviderDemo extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
displayRecords();
}
private void displayRecords() {
//
String columns[] = new String[] { People.NAME, People.NUMBER };
Uri mContacts = People.CONTENT_URI;
Cursor cur = managedQuery(
mContacts,
columns, //
null, // WHERE
null, // WHERE
null // Order-by
);
if (cur.moveToFirst()) {
String name = null;
String phoneNo = null;
do {
//
name = cur.getString(cur.getColumnIndex(People.NAME));
phoneNo = cur.getString(cur.getColumnIndex(People.NUMBER));
Toast.makeText(this, name + ” ” + phoneNo, Toast.LENGTH_LONG).show();
} while (cur.moveToNext());
}
}
}
private void updateRecord(int recNo, String name) {
Uri uri = ContentUris.withAppendedId(People.CONTENT_URI, recNo);
ContentValues values = new ContentValues();
values.put(People.NAME, name);
getContentResolver().update(uri, values, null, null);
}
private void insertRecords(String name, String phoneNo) {
ContentValues values = new ContentValues();
values.put(People.NAME, name);
Uri uri = getContentResolver().insert(People.CONTENT_URI, values);
Log.d(”ANDROID”, uri.toString());
Uri numberUri = Uri.withAppendedPath(uri, People.Phones.CONTENT_DIRECTORY);
values.clear();
values.put(Contacts.Phones.TYPE, People.Phones.TYPE_MOBILE);
values.put(People.NUMBER, phoneNo);
getContentResolver().insert(numberUri, values);
}
private void deleteRecords() {
Uri uri = People.CONTENT_URI;
getContentResolver().delete(uri, null, null);
}
vnd.android.cursor.item/vnd.yourcompanyname.contenttype （ MIME ）
, URI content://com.example.transportationprovider/trains/122 typevnd.android.cursor.item/vnd.example.rail MIME 。
vnd.android.cursor.dir/vnd.yourcompanyname.contenttype （ MIME ）
, URI content://com.example.transportationprovider/trains vnd.android.cursor.dir/vnd.example.rail MIME 。
public class MyUsers {
public static final String AUTHORITY = “com.wissen.MyContentProvider”;
// BaseColumn _id
public static final class User implements BaseColumns {
public static final Uri CONTENT_URI = Uri.parse(”content://com.wissen.MyContentProvider”);
//
public static final String USER_NAME = “USER_NAME”;
}
}
public class MyContentProvider extends ContentProvider {
private SQLiteDatabase sqlDB;
private DatabaseHelper dbHelper;
private static final String DATABASE_NAME = “Users.db”;
private static final int DATABASE_VERSION= 1;
private static final String TABLE_NAME= “User”;
private static final String TAG = “MyContentProvider”;
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
//
db.execSQL(”Create table ” + TABLE_NAME + “( _id INTEGER PRIMARY KEY AUTOINCREMENT, USER_NAME TEXT);”);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL(”DROP TABLE IF EXISTS ” + TABLE_NAME);
onCreate(db);
}
}
@Override
public int delete(Uri uri, String s, String[] as) {
return 0;
}
@Override
public String getType(Uri uri) {
return null;
}
@Override
public Uri insert(Uri uri, ContentValues contentvalues) {
sqlDB = dbHelper.getWritableDatabase();
long rowId = sqlDB.insert(TABLE_NAME, “”, contentvalues);
if (rowId > 0) {
Uri rowUri = ContentUris.appendId(MyUsers.User.CONTENT_URI.buildUpon(), rowId).build();
getContext().getContentResolver().notifyChange(rowUri, null);
return rowUri;
}
throw new SQLException(”Failed to insert row into ” + uri);
}
@Override
public boolean onCreate() {
dbHelper = new DatabaseHelper(getContext());
return (dbHelper == null) ? false : true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
SQLiteDatabase db = dbHelper.getReadableDatabase();
qb.setTables(TABLE_NAME);
Cursor c = qb.query(db, projection, selection, null, null, null, sortOrder);
c.setNotificationUri(getContext().getContentResolver(), uri);
return c;
}
@Override
public int update(Uri uri, ContentValues contentvalues, String s, String[] as) {
return 0;
}
}
<provider android:name=”MyContentProvider” android:authorities=”com.wissen.MyContentProvider” />
public class MyContentDemo extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
insertRecord(”MyUser”);
displayRecords();
}
private void insertRecord(String userName) {
ContentValues values = new ContentValues();
values.put(MyUsers.User.USER_NAME, userName);
getContentResolver().insert(MyUsers.User.CONTENT_URI, values);
}
private void displayRecords() {
String columns[] = new String[] { MyUsers.User._ID, MyUsers.User.USER_NAME };
Uri myUri = MyUsers.User.CONTENT_URI;
Cursor cur = managedQuery(myUri, columns,null, null, null );
if (cur.moveToFirst()) {
String id = null;
String userName = null;
do {
id = cur.getString(cur.getColumnIndex(MyUsers.User._ID));
userName = cur.getString(cur.getColumnIndex(MyUsers.User.USER_NAME));
Toast.makeText(this, id + ” ” + userName, Toast.LENGTH_LONG).show();
} while (cur.moveToNext());
}
}
}
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