小编sna*_*4el的帖子

我在我的项目中使用了预先填充的数据库。我有一个创建的 .sql 基础并在第一次启动时复制它。基础是大 33mb。

    private void copyDataBase() throws IOException {

    InputStream externalDbStream = context.getAssets().open(DB_NAME);

    String outFileName = DB_PATH + DB_NAME;

    OutputStream localDbStream = new FileOutputStream(outFileName);

    byte[] buffer = new byte[1024];
    int bytesRead;
    while ((bytesRead = externalDbStream.read(buffer)) > 0) {
        localDbStream.write(buffer, 0, bytesRead);
    }
    localDbStream.close();
    externalDbStream.close();

}

它适用于除 API 28 之外的不同 android 版本。 API 28 抛出“Caused by: android.database.sqlite.SQLiteException: no such table: phrases”异常：

Caused by: android.database.sqlite.SQLiteException: no such table: phrases (code 1 SQLITE_ERROR): , while compiling: select * from phrases where complexity …