Я делаю синхронизацию между сервером sql и sqlite. При этом я получил OutOfMemoryError. Пожалуйста, скажите мне, как мы можем избежать или из моего кода есть какие-либо нежелательные или дополнительные операторы памяти? Пожалуйста, ведите меня.
Где я могу использовать System.gc()?
Из результата сервиса получается строка в формате JSON.
{"Table1" :
[{"ActiveStatus" : "1","AddressLine1" : "223, Dambulla Road,","AddressLine2" : "Galewela.","AddressLine3" : "","AlphaSearchCode" : "New Lanka Hardware -","BusinessUnit" : "MASS","ContactName" : "","CreatedBy" : "Nazar ","CreatedOn" : "Oct 3 2005 6:16PM","CreditLimit" : "100.00","CurrencyCode" : " ","CurrencyProcessingRequired" : "0","CurrentBalance" : "0.00","EMailAddress" : "","FaxNumber" : "","LastInvoiceDate" : "","LastPaymentDate" : "","LastPaymentValue" : "0.00","NewRetailerFlag" : "","OSOrdersPendingBase" : "0.00","OSOrdersPendingCurr" : "0.00","OnStopFlag" : "0","OnStopReasonCode" : " ","PaymentMethodCode" : "CQ","PriceGroup" : "MKT ","PricingMethod" : "0","RetailerCategoryCode" : "01 ","RetailerClassCode" : "C ","RetailerCode" : "0001 ","RetailerCodeSon" : " ","RetailerName" : "New Lanka Hardware - Galewela","RetailerTypeCode" : "02 ","RetailerTypeFlag" : "0","SalesExecutiveCode" : "THPOS ","SalesType" : "","SettlementTermsCode" : "C90","ShortAddress" : "Galewela11","StatusFlag" : "0","TelephoneNumber" : "","TempCreditApprovedInvNo" : "","TemporaryCreditAllowed" : "","TemporaryCreditApprovedBy" : "","TemporaryCreditApprovedOn" : "","TemporaryCreditLimit" : "0.00","TemporaryCreditUpto" : "","TerritoryCode" : "0001","TotalCreditsNotAllocated" : "0.00","TownCode" : "GW ","TradeSchemeGroup" : "DS ","VATCode" : "V0","VATRegistrationNo" : ""}]}
Это одна запись. В реальном времени будет 1000 или более записей. Получив этот результат JSON, он хочет сделать оператор обновления или оператор вставки.
Мне так понравилось кодирование:
public void loadDownloadData() {
SoapPrimitive responsePrimitiveData;
//Loop Table list
for (int i = 0; i < SelectedTablesName.size(); i++) {
try {
responsePrimitiveData = soapPrimitiveData(SelectedTablesName.get(i));
if (responsePrimitiveData != null) {
try {
String result = responsePrimitiveData.toString();
if(!result.equals("0")){
JSONObject jsonobject = new JSONObject(result);
JSONArray array = jsonobject.getJSONArray("Table1");
int max = array.length();
String actualtable = getAndroidTablename(SelectedTablesName.get(i));
String updateType = getTableUpdateType(SelectedTablesName.get(i));
boolean isRecordAvailable = isTableRecords(SelectedTablesName.get(i));
String[] strWhereField = getTablePrimaryKey(SelectedTablesName.get(i),strBusinessUnit);
if (updateType.equals("1")) {
// Loop each table data
for (int j = 0; j < max; j++) {
JSONObject obj = array.getJSONObject(j);
JSONArray names = obj.names();
StringBuffer strFields = new StringBuffer();
//StringBuffer strValues = new StringBuffer();
String[] strToFields = new String[names.length()];
String[] strToFieldsVal = new String[names.length()];
// getting the Json name, values in separate string array
for (int k = 0; k < names.length(); k++) {
strToFields[k] = names.getString(k);
if (obj.getString(names.getString(k)) == null) {
strToFieldsVal[k] = "";
} else {
if (obj.getString(names.getString(k)).equals(" ")) {
strToFieldsVal[k] = "";
} else {
strToFieldsVal[k] = obj.getString(names.getString(k)).replaceAll("\\s+", "");
}
}
strFields.append(names.getString(k) + ",");
} // end of json for loop
strFields.deleteCharAt(strFields.length() - 1);
if (isRecordAvailable) {
String[] strWhereFieldVal = new String[strWhereField.length];
StringBuffer whereFields = new StringBuffer();
// making update calues where part
for (int a = 0; a < strWhereField.length; a++) {
strWhereFieldVal[a] = obj.getString(strWhereField[a]);
String whereValues = obj.getString(strWhereField[a]).replaceAll("\\s+", "");
whereFields.append(strWhereField[a]+ "= '" + whereValues+ "' and ");
}
// removing "and" from the end
whereFields.delete(whereFields.length() - 4,whereFields.length());
updateTableRecords(actualtable,strToFields, strToFieldsVal, whereFields.toString(),strWhereFieldVal);
} else {
insertTableRecords(actualtable,strToFields, strToFieldsVal);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
//Log.i("***" ,SelectedTablesName.get(i));
System.out.println(" -- " + SelectedTablesName.get(i));
try {
updateSuccessfulTableSoap(SelectedTablesName.get(i));
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
}
}
Как мы можем сделать сборку мусора здесь. Я хочу сделать это string, string [], stringBuilder ссылкой на null или что я могу сделать для этого.
Ошибка:
08-11 17:26:53.040: ERROR/AndroidRuntime(348): FATAL EXCEPTION: AsyncTask #2
08-11 17:26:53.040: ERROR/AndroidRuntime(348): java.lang.RuntimeException: An error occured while executing doInBackground()
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at android.os.AsyncTask$3.done(AsyncTask.java:200)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.util.concurrent.FutureTask.setException(FutureTask.java:125)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.util.concurrent.FutureTask.run(FutureTask.java:138)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.lang.Thread.run(Thread.java:1019)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): Caused by: java.lang.OutOfMemoryError
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.nio.CharBuffer.put(CharBuffer.java:532)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.nio.charset.CharsetDecoder.allocateMore(CharsetDecoder.java:263)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.nio.charset.CharsetDecoder.decode(CharsetDecoder.java:218)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.nio.charset.Charset.decode(Charset.java:488)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.lang.String.<init>(String.java:181)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.lang.String.<init>(String.java:141)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:96)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at com.xont.controller.DownlaodTableActivity.soapPrimitiveData(DownlaodTableActivity.java:640)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at com.xont.controller.DownlaodTableActivity.loadDownloadData(DownlaodTableActivity.java:247)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at com.xont.controller.DownlaodTableActivity$BackgroundAsyncTask.doInBackground(DownlaodTableActivity.java:795)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at com.xont.controller.DownlaodTableActivity$BackgroundAsyncTask.doInBackground(DownlaodTableActivity.java:1)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at android.os.AsyncTask$2.call(AsyncTask.java:185)
08-11 17:26:53.040: ERROR/AndroidRuntime(348): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
1020 * Отредактированный *
Это обработка JSON
public void getSoapResponseTableDataJson(SoapPrimitive node,
ArrayList<String> strings ,String loadedtable) throws JSONException {
String result = node.toString();
JSONObject jsonobject = new JSONObject(result);
JSONArray array = jsonobject.getJSONArray("Table1");
int max = array.length();
HashMap<String, String> applicationSettings = new HashMap<String,String>();
for(int i = 0; i < max; i++){
String value = array.getJSONObject(i).getString("value");
String name = array.getJSONObject(i).getString("name");
applicationSettings.put(name, value);
}
}
Пожалуйста, помогите мне, как получить решение для этого ....
Заранее спасибо.