我正在开展一个项目，我正在下载并将数据从Web保存到sqlite数据库。当我运行我的项目时，它显示IllegalStateException（已经关闭）。
我的logcat是：
09-29 12:14:49.485: E/AndroidRuntime(4956): FATAL EXCEPTION: AsyncTask #2
09-29 12:14:49.485: E/AndroidRuntime(4956): java.lang.RuntimeException: An error occured while executing doInBackground()
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.os.AsyncTask$3.done(AsyncTask.java:266)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1081)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:574)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.lang.Thread.run(Thread.java:1020)
09-29 12:14:49.485: E/AndroidRuntime(4956): Caused by: java.lang.IllegalStateException: database /data/data/com.irlsolutions.ittrading/databases/ITTrading.sqlite (conn# 0) already closed
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.database.sqlite.SQLiteDatabase.verifyDbIsOpen(SQLiteDatabase.java:2134)
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1526)
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1508)
09-29 12:14:49.485: E/AndroidRuntime(4956): at com.irlsolutions.ittradinglibrary.Query_new.getItemFromEndOfDay(Query_new.java:89)
09-29 12:14:49.485: E/AndroidRuntime(4956): at com.irlsolutions.ittrading.Symbol_Fetcher.getSymbolFromLocal(Symbol_Fetcher.java:70)
09-29 12:14:49.485: E/AndroidRuntime(4956): at com.irlsolutions.ittrading.Markets$Markets_Thread.doInBackground(Markets.java:190)
09-29 12:14:49.485: E/AndroidRuntime(4956): at com.irlsolutions.ittrading.Markets$Markets_Thread.doInBackground(Markets.java:1)
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.os.AsyncTask$2.call(AsyncTask.java:252)
09-29 12:14:49.485: E/AndroidRuntime(4956): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
doInBackGround（）是：
protected Void doInBackground(Void... arg0) {
float flt_close1;
float flt_close2;
float variation;
// TODO Auto-generated method stub
xmlData = XML_Parser_Helper.parseXmlSax(Markets.this, "", R.raw.market_indices_america);
lst_codes = xmlData.getListOfItems();
xmlData = XML_Parser_Helper.parseXmlSax(Markets.this, "", R.raw.market_indices_europe);
lst_codes.addAll(xmlData.getListOfItems());
xmlData = XML_Parser_Helper.parseXmlSax(Markets.this, "", R.raw.market_indices_asia);
lst_codes.addAll(xmlData.getListOfItems());
for(int i = 0; i < lst_codes.size(); i++){
lst_symbols.add(
symbolFetcher.getSymbolFromLocal(
lst_codes.get(i).get("symbol_code").toString(),
lst_codes.get(i).get("market_code").toString(),
xmlData,
"symbols",
lst_codes.get(i).get("chain_code").toString()
)
);
lst_symbols.get(i).put("company_name", lst_codes.get(i).get("company_name").toString());
lst_symbols.get(i).put("symbol_code", lst_codes.get(i).get("symbol_code").toString());
lst_symbols.get(i).put("market_code", lst_codes.get(i).get("market_code").toString());
lst_symbols.get(i).put("chain_code", lst_codes.get(i).get("chain_code").toString());
lst_symbols.get(i).put("flag", lst_codes.get(i).get("flag").toString());
flt_close1 = (float)Double.parseDouble((lst_symbols.get(i).get("close_1").toString().equals(""))?"0.0":lst_symbols.get(i).get("close_1").toString());
flt_close2 = (float)Double.parseDouble((lst_symbols.get(i).get("close_2").toString().equals(""))?"0.0":lst_symbols.get(i).get("close_2").toString());
variation = Generic_Functions.getVariation(flt_close1, flt_close2);
lst_symbols.get(i).put("variation", variation);
if(symbolFetcher.isSymbolAddedToPortfolio(str_username, lst_codes.get(i).get("symbol_code").toString(), lst_codes.get(i).get("market_code").toString())){
lst_symbols.get(i).put("added", true);
}else{
lst_symbols.get(i).put("added", false);
}
publishProgress(new Void[]{});
}
return null;
}
我正在使用查询的函数：
public HashMap<String,Object> getItemFromEndOfDay(String str_symbolCode,String str_marketCode){
HashMap<String,Object> hm = new HashMap<String, Object>();
Cursor cursor = database.rawQuery("SELECT * FROM " + Init.TABLE_END_OF_DAY + " WHERE symbol_code='" + str_symbolCode + "' AND market_code='" + str_marketCode + "'", null);
if(cursor.getCount() > 0){
cursor.moveToFirst();
hm.put("symbol_code", cursor.getString(cursor.getColumnIndex("symbol_code")));
hm.put("market_code", cursor.getString(cursor.getColumnIndex("market_code")));
hm.put("instrument_name", cursor.getString(cursor.getColumnIndex("instrument_name")));
hm.put("company_name", cursor.getString(cursor.getColumnIndex("company_name")));
hm.put("isin", cursor.getString(cursor.getColumnIndex("isin")));
hm.put("interval", cursor.getString(cursor.getColumnIndex("interval")));
hm.put("exchange", cursor.getString(cursor.getColumnIndex("exchange")));
hm.put("ex_open", cursor.getString(cursor.getColumnIndex("ex_open")));
hm.put("ex_close", cursor.getString(cursor.getColumnIndex("ex_close")));
hm.put("currency", cursor.getString(cursor.getColumnIndex("currency")));
hm.put("timezone", cursor.getString(cursor.getColumnIndex("timezone")));
hm.put("date_1", cursor.getString(cursor.getColumnIndex("date_1")));
hm.put("hour_1", cursor.getString(cursor.getColumnIndex("hour_1")));
hm.put("open_interest_1", cursor.getString(cursor.getColumnIndex("open_interest_1")));
hm.put("open_1", cursor.getString(cursor.getColumnIndex("open_1")));
hm.put("high_1", cursor.getString(cursor.getColumnIndex("high_1")));
hm.put("low_1", cursor.getString(cursor.getColumnIndex("low_1")));
hm.put("close_1", cursor.getString(cursor.getColumnIndex("close_1")));
hm.put("volume_1", cursor.getString(cursor.getColumnIndex("volume_1")));
hm.put("date_2", cursor.getString(cursor.getColumnIndex("date_2")));
hm.put("hour_2", cursor.getString(cursor.getColumnIndex("hour_2")));
hm.put("open_interest_2", cursor.getString(cursor.getColumnIndex("open_interest_2")));
hm.put("open_2", cursor.getString(cursor.getColumnIndex("open_2")));
hm.put("high_2", cursor.getString(cursor.getColumnIndex("high_2")));
hm.put("low_2", cursor.getString(cursor.getColumnIndex("low_2")));
hm.put("close_2", cursor.getString(cursor.getColumnIndex("close_2")));
hm.put("volume_2", cursor.getString(cursor.getColumnIndex("volume_2")));
cursor.close();
return hm;
}else{
hm.put("symbol_code", str_symbolCode);
hm.put("market_code", str_marketCode);
hm.put("instrument_name","");
hm.put("company_name", "");
hm.put("isin", "");
hm.put("interval", "");
hm.put("exchange", "");
hm.put("ex_open", "");
hm.put("ex_close", "");
hm.put("currency", "");
hm.put("timezone", "America/New_York");
hm.put("date_1", "");
hm.put("hour_1", "");
hm.put("open_interest_1", "");
hm.put("open_1", "");
hm.put("high_1", "");
hm.put("low_1", "");
hm.put("close_1", "");
hm.put("volume_1", "");
hm.put("date_2", "-");
hm.put("hour_2", "");
hm.put("open_interest_2", "");
hm.put("open_2", "");
hm.put("high_2", "");
hm.put("low_2", "");
hm.put("close_2", "");
hm.put("volume_2", "");
cursor.close();
return hm;
}
// cursor.close();
// return hm;
}
答案 0 :(得分：1)
异常表示当光标已经关闭时你正在调用close。 例外中的行号将告诉您在哪里;猜测我会说它是在else块中
答案 1 :(得分：1)
问题不是关闭它两次，问题是关闭后使用它。
如果查看查询：
09-29 12:14:49.485: E/AndroidRuntime(4956): Caused by: java.lang.IllegalStateException: database /data/data/com.irlsolutions.ittrading/databases/ITTrading.sqlite (conn# 0) already closed
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.database.sqlite.SQLiteDatabase.verifyDbIsOpen(SQLiteDatabase.java:2134)
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1526)
09-29 12:14:49.485: E/AndroidRuntime(4956): at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1508)
您看到它来自rawquery，这是您在getItemFromEndOfDay开头使用的功能。所以如果我没有弄错的话，你会在调用函数的开始中得到这个错误，因为那时数据库没有打开。您可以通过检查您获得的代码的距离来轻松验证这一点。
确保您没有关闭任何内容，然后尝试再次使用该数据库。添加一些调试行来验证它确实是这一行，并且如果你在此之前已经关闭了任何东西。