[英]ORMLite groupByRaw and groupBy issue on android SQLite db
[英]How to connect to Password protected SQLite DB with OrmLite?
我通過以下代碼從資產復制數據庫:
public class DatabaseHelper extends OrmLiteSqliteOpenHelper {
private static final String DATABASE_NAME = "database.db";
private static final String DATABASE_PATH = "/data/data/"+BuildConfig.APPLICATION_ID+"/databases/";
public DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
copyFromAssets(context);
}
private void copyFromAssets(Context context) {
boolean dbexist = checkdatabase();
if (!dbexist) {
File dir = new File(DATABASE_PATH);
dir.mkdirs();
InputStream myinput = context.getAssets().open(DATABASE_NAME);
String outfilename = DATABASE_PATH + DATABASE_NAME;
Log.i(DatabaseHelper.class.getName(), "DB Path : " + outfilename);
OutputStream myoutput = new FileOutputStream(outfilename);
byte[] buffer = new byte[1024];
int length;
while ((length = myinput.read(buffer)) > 0) {
myoutput.write(buffer, 0, length);
}
myoutput.flush();
myoutput.close();
myinput.close();
}
}
}
為了得到道,我用這個:
public Dao<AnyItem, Integer> getDaoAnyItem() throws SQLException {
if (daoAnyItem == null) {
daoAnyItem = getDao(AnyItem.class);
}
return daoAnyItem;
}
但是,如果我的數據庫將受到密碼保護,如何獲得保護?
您必須將SQLCipher與OrmLite結合使用,我建議您使用ormlite -sqlcipher庫
OrmLiteSqliteOpenHelper具有使用密碼的構造函數,因此將您的超級調用更改為
super(context, DATABASE_NAME, null, DATABASE_VERSION, (File)null, "DB password goes here");
我會從DatabaseHelper構造函數中調用對copyFromAssets(context)的調用,並在創建DatabaseHelper之前調用它,即應用程序啟動時的第一件事
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