我有一个特殊的asynctask，当它被称为它运行多次，像很多，几乎每一秒。我怎么能阻止这个？代码在下面，也许我在某个地方犯了一个我无法看到或做某事的错误。当AsyncTask成功时，我就会启动一个AlarmService。
private void connectWithHttpGet(String Id, String encryptedTo,String encryptedId, String encryptedCu,
String encryptedA, String encryptedNa) {
class HttpGetAsyncTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
URL url;
HttpURLConnection urlConnection = null;
String paramMerchantId = params[0];
String paramEncryptedToken = params[1];
String paramEncryptedCustId = params[2];
String paramEncryptedCurrency = params[3];
String paramEncryptedAmount = params[4];
String paramEncryptedNarration = params[5];
String result = null;
String JsonResponse = null;
BufferedReader reader = null;
try {
url = new URL(Config.URL);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoOutput(true);
// is output buffer writter
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/json");
urlConnection.setRequestProperty("Accept", "application/json");
JSONObject jsonParam = new JSONObject();
jsonParam.put("id", paramMerchantId);
jsonParam.put("at", paramEncryptedA);
jsonParam.put("cu", paramEncryptedC);
jsonParam.put("c", paramEncryptedT);
jsonParam.put("n", paramEncryptedN);
jsonParam.put("c", paramEncryptedId);
Writer writer = new BufferedWriter(new OutputStreamWriter(urlConnection.getOutputStream(), "UTF-8"));
writer.write(jsonParam.toString());
System.out.println("input" + jsonParam.toString());
writer.close();
InputStream inputStream = urlConnection.getInputStream();
System.out.println("input" + inputStream );
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String inputLine;
while ((inputLine = reader.readLine()) != null)
buffer.append(inputLine + "\n");
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
JsonResponse = buffer.toString();
System.out.println("Response" + JsonResponse);
return JsonResponse;
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
}
}
}
return null;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
ObscuredSharedPreferences pref = ObscuredSharedPreferences.getPrefs(SubActivity.this, "MyPref", MODE_PRIVATE);
final String u = pref.getString("U", null);
final String e= = pref.getString("E", null);
final String n = pref.getString("Nan", null);
String space=" ";
String breaking = "\n";
final String greet = getString(R.string.hi)+space+n+breaking+breaking;
final String first = getString(R.string.first);
final ObscuredSharedPreferences.Editor editor = pref.edit();
Firebase pay = new Firebase(Config.FIREBASE_URL);
JSONObject ResponseObject = null;
String str = null;
String token = null;
String message= null;
String reference= null;
try {
ResponseObject = new JSONObject(result);
str = ResponseObject.getJSONObject("data").getString("responsecode");
token = ResponseObject.getJSONObject("data").getString("responsetoken");
message= ResponseObject.getJSONObject("data").getString("responsemessage");
reference= ResponseObject.getJSONObject("data").getString("transactionreference");
} catch (JSONException e) {
e.printStackTrace();
}
if ("00".equalsIgnoreCase(str)) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
String currentDateAndTime = sdf.format(new Date());
String body = greet+first+reference;
System.out.println("String date:"+currentDateAndTime);
Calendar c = Calendar.getInstance();
c.add(Calendar.HOUR, 1);
Date resultdate = new Date(c.getTimeInMillis());
String dateInString = sdf.format(resultdate);
System.out.println("String date:" + dateInString);
Map<String, Object> update = new HashMap<String, Object>();
update.put(z + "/t",Config.S);
update.put(z + "/r",Config.E);
update.put(z + "/f",Config.A);
update.put(z + "/g", currentDateAndTime);
update.put(z + "/y", dateInString);
pay.updateChildren(update);
editor.remove("S");
editor.remove("R");
editor.remove("A");
editor.putString("S", Config.S);
editor.putString("R", Config.R);
editor.putString("A", Config.C);
editor.apply();
manager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),
AlarmManager.INTERVAL_FIFTEEN_MINUTES, pendingIntent);
Mail.connectWithHttpGetEmail(email, body);
mProgressDialog.dismiss();
Intent intentHome = new Intent(getApplicationContext(), HomeActivity.class);
startActivity(intentHome);
finish();
}else{
mProgressDialog.dismiss();
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
}
}
HttpGetAsyncTask httpGetAsyncTask = new HttpGetAsyncTask();
// Parameter we pass in the execute() method is relate to the first generic type of the AsyncTask
// We are passing the connectWithHttpGet() method arguments to that
httpGetAsyncTask.execute(encryptedId, encryptedT, encryptedd, encryptedCurrency,
encryptedA, encryptedN);
}
答案 0 :(得分：0)
使用名为Volley的谷歌新图书馆，而不是所有
http://www.androidhive.info/2014/05/android-working-with-volley-library-1/