public static void DeleteCode(ScannedCode code)
{
Load();
int index = 1;
while (true)
{
string serializedClass = Functions.GetSetting("savedCodes", "code" + index);
if (string.IsNullOrEmpty(serializedClass))
{
break;
}
ScannedCode deserializedCode = DeserializeCode(serializedClass);
if (code.Code == deserializedCode.Code)
{
Functions.DeleteSetting("savedCodes", "code" + index);
_scannedCodes.Remove(code);
FixCodeIndexes(index + 1);
break;
}
index++;
}
}
public static string SerializeCode(ScannedCode code)
{
IFormatter formatter = new BinaryFormatter();
using (MemoryStream memoryStream = new MemoryStream())
{
formatter.Serialize(memoryStream, code);
return(Convert.ToBase64String(memoryStream.ToArray()));
}
}
private void Finish(object sender, EventArgs e)
{
if (!CheckDataOk())
{
return;
}
if (string.IsNullOrWhiteSpace(_editTextSubject.Text))
{
ResponseManager.ShowMessage("Error", "Subject cannot be empty!");
return;
}
ScannedCode code = new ScannedCode(_editTextSubject.Text, int.Parse(_txtViewGrade.Text), _qrCode);
ScannedCodesCollection.AddCode(code);
Finish();
}
private void ShowCodeAlreadyScannedDialog()
{
ScannedCode code = ScannedCodesCollection.GetFullCodeFromCode(_qrCode);
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.AppendLine(string.Format("Code has already been graded at {0} with {1}!", code.Subject, code.Grade));
stringBuilder.Append("Do you want to delete the old grade and save a new one?");
var dialogFragment = new DialogFragment();
dialogFragment.InitializeYesNo(stringBuilder.ToString(), "Question", delegate {
ScannedCodesCollection.DeleteCode(code);
_codeAlreadyUsed = false;
}, delegate {
Finish();
});
dialogFragment.Show();
}
private void Next(object sender, EventArgs e)
{
if (!CheckDataOk())
{
return;
}
ScannedCode code = new ScannedCode(_editTextSubject.Text, int.Parse(_txtViewGrade.Text), _qrCode);
ScannedCodesCollection.AddCode(code);
Intent intent = new Intent(this, typeof(ScanCodeActivity));
Bundle bundle = new Bundle();
bundle.PutString("subject", _editTextSubject.Text);
intent.PutExtras(bundle);
StartActivity(intent);
Finish();
}
public static void Load()
{
if (_scannedCodes.Count > 0)
{
return;
}
int index = 1;
while (true)
{
string serializedClass = Functions.GetSetting("savedCodes", "code" + index);
if (string.IsNullOrEmpty(serializedClass))
{
break;
}
ScannedCode code = DeserializeCode(serializedClass);
_scannedCodes.Add(code);
index++;
}
}
public static void Save(ScannedCode code)
{
Load();
Functions.SaveSetting("savedCodes", "code" + (_scannedCodes.Count), SerializeCode(code));
}
public static void AddCode(ScannedCode code)
{
_scannedCodes.Add(code);
Save(code);
}
