我正在從事一個項目,我正在下載並將數據從web保存到sqlite數據庫。幾分鐘前,我收到一個奇怪的例外,我們的服務器從一個用戶說,sqlite數據庫已經關閉..我只檢查了整個文件發生異常,我不打電話dbHelper.close();
。這裏是應用程序崩潰和logcat的消息功能:Android數據庫關閉異常
public void insertCollectionCountries(JSONObject obj, Context context) {
//Insert in collection_countries
if(RPCCommunicator.isServiceRunning){
Log.w("","JsonCollection - insertCollectionCountries");
ContentValues valuesCountries = new ContentValues();
try {
collectionId = Integer.parseInt(obj.getString("collection_id"));
dbHelper.deleteSQL("collection_countries", "collection_id=?", new String[] {Integer.toString(collectionId)});
JSONArray arrayCountries = obj.getJSONArray("country_availability");
for (int i=0; i<arrayCountries.length(); i++) {
valuesCountries.put("collection_id", collectionId);
String countryCode = arrayCountries.getString(i);
valuesCountries.put("country_code", countryCode);
dbHelper.executeQuery("collection_countries", valuesCountries);
}
} catch (JSONException e){
e.printStackTrace();
}
}
}
和錯誤是在該行:dbHelper.executeQuery("collection_countries", valuesCountries);
這裏是logcat的消息:
java.lang.IllegalStateException: database /data/data/com.stampii.stampii/databases/stampii_sys_tpl.sqlite (conn# 0) already closed
at android.database.sqlite.SQLiteDatabase.verifyDbIsOpen(SQLiteDatabase.java:2123)
at android.database.sqlite.SQLiteDatabase.setTransactionSuccessful(SQLiteDatabase.java:734)
at com.stampii.stampii.comm.rpc.SystemDatabaseHelper.execQuery(SystemDatabaseHelper.java:298)
at com.stampii.stampii.comm.rpc.SystemDatabaseHelper.executeQuery(SystemDatabaseHelper.java:291)
at com.stampii.stampii.jsonAPI.JsonCollection.insertCollectionCounries(JsonCollection.java:548)
at com.stampii.stampii.jsonAPI.JsonCollection.executeInsert(JsonCollection.java:181)
at com.stampii.stampii.collections.MyService.downloadCollections(MyService.java:122)
at com.stampii.stampii.collections.MyService$2.run(MyService.java:74)
at java.lang.Thread.run(Thread.java:1020)
和功能在我dbHelperClass
我正用它來插入數據:
public boolean executeQuery(String tableName,ContentValues values){
return execQuery(tableName,values);
}
private boolean execQuery(String tableName,ContentValues values){
sqliteDb = instance.getWritableDatabase();
sqliteDb.beginTransaction();
sqliteDb.insert(tableName, null, values);
sqliteDb.setTransactionSuccessful();
sqliteDb.endTransaction();
return true;
}
任何想法可以關閉我的sqlite數據庫或什麼可以導致這種異常,因爲我已經測試了這個代碼與幾個不同的Android版本,不同的設備(HTC EVO 3D,三星Galaxy Nexus,HTC Desire,LG OPTIMUS PAD,三星Galaxy S2,三星Galaxy Note),它工作正常。
在此先感謝!
看看你在哪裏*關閉數據庫。也許在onClose()..也,看看你是否再次打開onResume()或類似.. – Tapirboy 2012-02-29 15:45:33