/// <summary>
/// This is called for activities that set launchMode to "singleTop" in their package,
/// or if a client used the <see cref="Android.Content.ActivityFlags.SingleTop"/> flag when calling
/// <see cref="Android.Content.ContextWrapper.StartActivity(Android.Content.Intent)"/>.
/// </summary>
/// <param name="intent">The new intent that was started for the activity.</param>
protected override void OnNewIntent(Intent intent)
{
bool isBarcodeShouldBeDeleted = intent.GetBooleanExtra("delete", false);
// if barcode should be deleted
if (isBarcodeShouldBeDeleted)
{
// if clicked item index is correct
if (_barcodeGeneratorFragment.ClickedItemIndex != -1)
{
// get adapter
ArrayAdapter <Utils.BarcodeInformation> adapter = _barcodeGeneratorFragment.ListAdapter as ArrayAdapter <Utils.BarcodeInformation>;
// remove barcode
adapter.Remove(adapter.GetItem(_barcodeGeneratorFragment.ClickedItemIndex));
adapter.NotifyDataSetChanged();
}
}
else
{
// get barcode writer settings
string xmlSerialization = intent.GetStringExtra("barcode");
if (xmlSerialization != null)
{
WriterSettings barcodeWriterSettings = Utils.DeserializeBarcodeWriterSettings(xmlSerialization);
// get barcode description
string barcodeDescription = intent.GetStringExtra("barcodeDescription");
// get barcode subset
string barcodeSubset = intent.GetStringExtra("barcodeSubset");
string barcodeValue = intent.GetStringExtra("barcodeValue");
ArrayAdapter <Utils.BarcodeInformation> adapter = _barcodeGeneratorFragment.ListAdapter as ArrayAdapter <Utils.BarcodeInformation>;
// if barcode writer settings is not empty
if (barcodeWriterSettings != null)
{
// if clicked item index is correct
if (_barcodeGeneratorFragment.ClickedItemIndex != -1)
{
// update list item
Utils.BarcodeInformation item = adapter.GetItem(_barcodeGeneratorFragment.ClickedItemIndex);
item.BarcodeWriterSetting = barcodeWriterSettings;
item.BarcodeValue = barcodeValue;
item.BarcodeDescription = barcodeDescription;
item.BarcodeSubsetName = barcodeSubset;
}
else
{
// add value to the list
adapter.Add(new Utils.BarcodeInformation(barcodeWriterSettings, barcodeValue, barcodeDescription, barcodeSubset));
}
adapter.NotifyDataSetChanged();
}
}
}
SaveHistory();
base.OnNewIntent(intent);
}
/// <summary>
/// Called to do initial creation of a fragment.
/// </summary>
/// <param name="savedInstanceState">If the fragment is being re-created from a previous saved state,
/// this is the state.</param>
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Utils.SetLocaleFromPrefereces(this);
SetContentView(Resource.Layout.main);
SupportActionBar.SetDisplayHomeAsUpEnabled(true);
SupportActionBar.SetTitle(Resource.String.title_barcode_viewer);
string xmlSerialization = Intent.GetStringExtra("barcode");
WriterSettings barcodeWriterSettings = Utils.DeserializeBarcodeWriterSettings(xmlSerialization);
string barcodeDescription = Intent.GetStringExtra("barcodeDescription");
string barcodeSubset = Intent.GetStringExtra("barcodeSubset");
string barcodeValue = Intent.GetStringExtra("barcodeValue");
_barcode = new Utils.BarcodeInformation(barcodeWriterSettings, barcodeValue, barcodeDescription, barcodeSubset);
_barcodeViewerFragment = new BarcodeViewerFragment(this);
// create a new transaction
Android.Support.V4.App.FragmentTransaction transaction = SupportFragmentManager.BeginTransaction();
// add fragment to the container
transaction.Replace(Resource.Id.mainContentFrame, _barcodeViewerFragment);
// commit the transaction
transaction.Commit();
}
/// <summary>
/// Called when an activity you launched exits, giving you the requestCode you started
/// it with, the resultCode it returned, and any additional data from it.
/// </summary>
/// <param name="requestCode">
/// The integer request code originally supplied to <see cref="StartActivityForResult()"/>, allowing
/// you to identify who this result came from.
/// </param>
/// <param name="resultCode">The integer result code returned by the child activity through its <see cref="SetResult()"/>.</param>
/// <param name="data">
/// An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
/// </param>
protected override void OnActivityResult(int requestCode, [GeneratedEnum] Result resultCode, Intent data)
{
// if result is OK
if (resultCode == Result.Ok)
{
// get barcode value
string barcodeValue = data.GetStringExtra("SCAN_RESULT");
// get barcode type string
string barcodeType = data.GetStringExtra("SCAN_RESULT_FORMAT");
// get adapter of list view
ArrayAdapter <Utils.BarcodeInformation> adapter = _barcodeGeneratorFragment.ListAdapter as ArrayAdapter <Utils.BarcodeInformation>;
// create new item
Utils.BarcodeInformation newItem = new Utils.BarcodeInformation();
// get barcode type
object barcodeTypeObject;
bool isSupported = Utils.BarcodeTypeNameToBarcodeTypes.TryGetValue(barcodeType, out barcodeTypeObject);
// if barcode type is supported
if (isSupported)
{
// set barcode value
newItem.BarcodeValue = barcodeValue;
// if barcode type is subset
if (barcodeTypeObject is BarcodeSymbologySubset)
{
// set subset name
newItem.BarcodeSubsetName = barcodeType;
((BarcodeSymbologySubset)barcodeTypeObject).Encode(barcodeValue, newItem.BarcodeWriterSetting);
}
else
{
// set barcode type
newItem.BarcodeWriterSetting.Barcode = (BarcodeType)barcodeTypeObject;
newItem.BarcodeWriterSetting.Value = barcodeValue;
}
// add to the list
adapter.Add(newItem);
adapter.NotifyDataSetChanged();
Toast.MakeText(this, Resources.GetString(Resource.String.barcode_added_message), ToastLength.Short).Show();
_barcodeGeneratorFragment.SetLastItemIndexToClickedItemIndex();
SwitchToBarcodeViewer(this, newItem);
}
else
{
ShowInfoDialog(
Resources.GetString(Resource.String.app_name),
string.Format(Resources.GetString(Resource.String.barcode_type_unsupported_message), barcodeType));
}
}
base.OnActivityResult(requestCode, resultCode, data);
}
/// <summary>
/// This method will be called when an item in the list is selected.
/// </summary>
/// <param name="l">The ListView where the click happened.</param>
/// <param name="v">The view that was clicked within the ListView.</param>
/// <param name="position">The position of the view in the list.</param>
/// <param name="id">The row id of the item that was clicked.</param>
public override void OnListItemClick(ListView l, View v, int position, long id)
{
base.OnListItemClick(l, v, position, id);
// save clicked position
_clickedItemIndex = position;
// get clicked item
Utils.BarcodeInformation item = ((BarcodeArrayAdapter)ListAdapter).GetItem(position);
_mainActivity.SwitchToBarcodeViewer(_mainActivity, item);
}
/// <summary>
/// Saves history.
/// </summary>
private void SaveHistory()
{
// adapter of list view
ArrayAdapter <Utils.BarcodeInformation> adapter = _barcodeGeneratorFragment.ListAdapter as ArrayAdapter <Utils.BarcodeInformation>;
if (adapter != null)
{
try
{
// open file stream to save history
using (FileStream fileStream = new FileStream(_historyFilePath, FileMode.Create, FileAccess.Write))
{
// open java object stream, which allows to seralize objects to a file
using (Java.IO.ObjectOutputStream outStream = new Java.IO.ObjectOutputStream(fileStream))
{
// temp list to get serialized items
List <ArrayList> list = new List <ArrayList>();
// for each list item
for (int index = 0; index < adapter.Count; index++)
{
// get item
Utils.BarcodeInformation item = adapter.GetItem(index);
// serialize writer settings
string xmlBarcode = Utils.SerializeBarcodeWriterSettings(item.BarcodeWriterSetting);
// create java list for four strings
ArrayList serializedStruct = new ArrayList();
serializedStruct.Add(xmlBarcode);
serializedStruct.Add(item.BarcodeDescription);
serializedStruct.Add(item.BarcodeSubsetName);
serializedStruct.Add(item.BarcodeValue);
// add serialized object to the temp list
list.Add(serializedStruct);
}
// create java list
using (ArrayList arrayList = new ArrayList(list))
{
// write java serializable objects to the file
outStream.WriteObject(arrayList);
}
outStream.Close();
}
fileStream.Close();
}
}
catch (Exception e)
{
Toast.MakeText(this, string.Format("Save history error: {0}", e.Message), ToastLength.Long).Show();
LogUnhandledException(e);
}
}
}
/// <summary>
/// Switches from current activity to the <see cref="BarcodeViewerActivity"/> instance.
/// </summary>
/// <param name="context">A context.</param>
/// <param name="item">A barcode item.</param>
internal void SwitchToBarcodeViewer(Context context, Utils.BarcodeInformation item)
{
Intent intent = new Intent(context, typeof(BarcodeViewerActivity));
// serialize data
string xmlSerialization = Utils.SerializeBarcodeWriterSettings(item.BarcodeWriterSetting);
intent.PutExtra("barcode", xmlSerialization);
intent.PutExtra("barcodeDescription", item.BarcodeDescription);
intent.PutExtra("barcodeSubset", item.BarcodeSubsetName);
intent.PutExtra("barcodeValue", item.BarcodeValue);
// start barcode viewer activity
StartActivity(intent);
}
/// <summary>
/// Loads history.
/// </summary>
/// <returns>
/// A history list.
/// </returns>
private List <Utils.BarcodeInformation> LoadHistory()
{
List <Utils.BarcodeInformation> values = new List <Utils.BarcodeInformation>();
if (File.Exists(_historyFilePath))
{
try
{
// open file stream
using (FileStream fileStream = new FileStream(_historyFilePath, FileMode.Open, FileAccess.Read))
{
// open java object stream, which allows to deseralize objects from a file
using (Java.IO.ObjectInputStream inStream = new Java.IO.ObjectInputStream(fileStream))
{
// read java list
JavaList arrayList = (JavaList)inStream.ReadObject();
for (int index = 0; index < arrayList.Count; index++)
{
// read four items: barcode writer settings + barcode value + barcode description + barcode subset name
JavaList serializedStruct = arrayList[index] as JavaList;
Utils.BarcodeInformation barcodeInformation = new Utils.BarcodeInformation();
barcodeInformation.BarcodeWriterSetting = Utils.DeserializeBarcodeWriterSettings((string)serializedStruct[0]);
barcodeInformation.BarcodeDescription = (string)serializedStruct[1];
barcodeInformation.BarcodeSubsetName = (string)serializedStruct[2];
if (serializedStruct.Count > 3)
{
barcodeInformation.BarcodeValue = (string)serializedStruct[3];
}
else
{
barcodeInformation.BarcodeValue = barcodeInformation.BarcodeWriterSetting.Value;
}
values.Add(barcodeInformation);
}
inStream.Close();
}
fileStream.Close();
}
}
catch (Exception e)
{
Toast.MakeText(this, string.Format("Load history error: {0}", e.Message), ToastLength.Long).Show();
LogUnhandledException(e);
}
}
return(values);
}
