我正在从事一个项目,我正在下载并将数据从web保存到sqlite数据库。几分钟前,我收到一个奇怪的例外,我们的服务器从一个用户说,sqlite数据库已经关闭..我只检查了整个文件发生异常,我不打电话dbHelper.close();
。这里是应用程序崩溃和logcat的消息功能:Android数据库关闭异常
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();
}
}
}
和错误是在该行:dbHelper.executeQuery("collection_countries", valuesCountries);
这里是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
我正用它来插入数据:
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;
}
任何想法可以关闭我的sqlite数据库或什么可以导致这种异常,因为我已经测试了这个代码与几个不同的Android版本,不同的设备(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。
在此先感谢!
看看你在哪里*关闭数据库。也许在onClose()..也,看看你是否再次打开onResume()或类似.. – Tapirboy 2012-02-29 15:45:33