将数据从CSV保存到Realm

我一直在创建一个词典应用程序，我将所有单词保存在.csv文件中
当应用程序首次运行时，此方法应将所有单词保存到领域数据库，但只保存少量。

任务java.util.concurrent.FutureTask@286858df拒绝来自io.realm.internal.async.RealmThreadPoolExecutor@273caff5 [正在运行，池大小= 13，活动线程= 13，排队任务= 100，已完成任务= 1]

realm = Realm.getDefaultInstance(); //adding to db satrt if (!(realm.isEmpty())) { Log.v("DB","already there!!"); } else { Log.v("DB","Not Found!!"); String csvFile = "longevity.csv"; BufferedReader br = null; String line = ""; String cvsSplitBy = ","; try { br = new BufferedReader(new InputStreamReader(getAssets().open(csvFile))); while ((line = br.readLine()) != null) { // use comma as separator final String[] oneWord= line.split(cvsSplitBy); realm.executeTransactionAsync(new Realm.Transaction() { @Override public void execute(Realm bgRealm) { Word user = bgRealm.createObject(Word.class); user.setWord(oneWord[1]); user.setMeaning(oneWord[2]); user.setSynonyms(oneWord[3]); } }, new Realm.Transaction.OnSuccess() { @Override public void onSuccess() { Log.v("TAGGED","SAVED"); } }, new Realm.Transaction.OnError() { @Override public void onError(Throwable error) { Log.v("TAGGED","FAILED"); } }); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { if (br != null) { try { br.close(); } catch (IOException e) { e.printStackTrace(); } } } } 

有没有一个更好的方式来发布预装的Relam dataBase与android，我有146800字保存到数据库运行的应用程序第一次，这种方法只保存几个单词然后给出错误显示上面！

Answer 1

使用1个事务而不是146800个事务。 还可以考虑使用1个实例来保存Realm对象，而不是创建146800个对象。

  realm.executeTransactionAsync(new Realm.Transaction() { @Override public void execute(Realm bgRealm) { String csvFile = "longevity.csv"; BufferedReader br = null; String line = ""; String cvsSplitBy = ","; try { br = new BufferedReader(new InputStreamReader(getAssets().open(csvFile))); Word user = new Word(); while((line = br.readLine()) != null) { // use comma as separator final String[] oneWord = line.split(cvsSplitBy); user.setWord(oneWord[1]); user.setMeaning(oneWord[2]); user.setSynonyms(oneWord[3]); bgRealm.insert(user); } } catch(Throwable e) { e.printStackTrace(); throw e; } finally { if(br != null) { try { br.close(); } catch(IOException e) { e.printStackTrace(); } } } } }, new Realm.Transaction.OnSuccess() { @Override public void onSuccess() { Log.v("TAGGED", "SAVED"); } }, new Realm.Transaction.OnError() { @Override public void onError(Throwable error) { Log.v("TAGGED", "FAILED"); } }); 

编辑：您应该考虑使用CSV解析器库 ，因为String.split()是内存密集型的。

代替

 while ((line = br.readLine()) != null) { 

考虑一下

 final CSVParser parser = new CSVParser(reader, CSVFormat.EXCEL.withHeader()); for (final CSVRecord record : parser) { ...