GreenDao 连接与关闭Sqlite数据库
16lz
2021-01-26
public class DBOperator {private static DBOperator dbInstance = new DBOperator();private SQLiteDatabase db;private DaoMaster daoMaster;private DaoSession daoSession;public static DBOperator getInstance() {return dbInstance;}/** * sqlite connection * * @param * @return */public DaoSession getDaoSession() {try {db = SQLiteDatabase.openDatabase(数据库路径 + 数据库名称, null,SQLiteDatabase.OPEN_READWRITE);daoMaster = new DaoMaster(db);daoSession = daoMaster.newSession();} catch (Exception e) {daoSession = null;}return daoSession;}/** * sqlite 连接 * * @param db * @return */public SQLiteDatabase connection(SQLiteDatabase db) {try {db = SQLiteDatabase.openDatabase(数据库路径 + 数据库名称, null,SQLiteDatabase.OPEN_READWRITE);} catch (Exception e) {lodg("[SQLiteDatabase]......e===>" + e.toString());}return db;}/** * 关闭 sqlite db * * @param mCursor * @param db */public void closeConnection(Cursor mCursor, SQLiteDatabase db) {try {if (mCursor != null) {mCursor.close();}if (db != null) {db.close();}} catch (Exception e) {lodg("[closeConnection]....e====>" + e.toString());}}}
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