private async Task deserializeJsonAsync()
{
try
{
var jsonSerializer = new DataContractJsonSerializer(typeof(MobileNumber));
var myStream = await ApplicationData.Current.LocalFolder.OpenStreamForReadAsync(JSONFILENAME);
Mnum = (MobileNumber)jsonSerializer.ReadObject(myStream);
MessagetoUser.Text = "Your Emergency Contact number has been saved.";
// Emergency number has been fed by user
NumberFed = true;
button.Content = "Change Number";
if (_accelerometer != null)
{
SendButton.IsEnabled = true;
rootPage.NotifyUser("", NotifyType.StatusMessage);
}
}
catch (System.Exception)
{
MessagetoUser.Text = "Please enter your emergency contact number to get started!";
SendButton.IsEnabled = false;
NumberFed = false;
Mnum = null;
button.Content = "Enter Number";
if (_accelerometer != null)
{
rootPage.NotifyUser("Please enter your emergency contact number to get started.", NotifyType.ErrorMessage);
}
}
}
private void EnterButtonAction(MobileNumber Number)
{
MobileNumber num = MainPage.Current.Mnum;
if (num == null)
{
if (isMobileNumberValid(Number.countryCode, Number.tenDigits))
{
EnterNumberButton.IsEnabled = true;
}
else
{
EnterNumberButton.IsEnabled = false;
}
return;
}
if (Number == null || num.countryCode != CountryCodeTextBox.Text || num.tenDigits != WelcometextBox.Text)
{
InvalidNumberMessageTextBlock.Text = "";
if (Number != null && isMobileNumberValid(Number.countryCode, Number.tenDigits))
{
EnterNumberButton.IsEnabled = true;
}
else
{
EnterNumberButton.IsEnabled = false;
}
}
else
{
InvalidNumberMessageTextBlock.Text = "The above number is your current emergency contact.";
EnterNumberButton.IsEnabled = false;
}
}
private async Task writeJsonAsync(MobileNumber Number)
{
var serializer = new DataContractJsonSerializer(typeof(MobileNumber));
using (var stream = await ApplicationData.Current.LocalFolder.OpenStreamForWriteAsync(
JSONFILENAME,
CreationCollisionOption.ReplaceExisting))
{
serializer.WriteObject(stream, Number);
}
InvalidNumberMessageTextBlock.Text = "Number Successfully Saved!";
}
/// <summary>
/// Whenever this page is navigated to, the page tries to retrieve the user provided emergency contact number
/// and display it, providing the user with an option to edit/change
/// </summary>
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
EnterNumberButton.IsEnabled = false;
MobileNumber Number = null;
if (MainPage.Current.Mnum == null)
{
await deserializeJsonAsync(Number);
}
// EnterButtonAction(Number);
else
{
Number = MainPage.Current.Mnum;
CountryCodeTextBox.Text = Number.countryCode;
WelcometextBox.Text = Number.tenDigits;
InvalidNumberMessageTextBlock.Foreground = new Windows.UI.Xaml.Media.SolidColorBrush(Windows.UI.Colors.Green);
InvalidNumberMessageTextBlock.Text = "The above number is your current emergency contact.";
}
}
private async Task deserializeJsonAsync(MobileNumber Number)
{
try
{
var jsonSerializer = new DataContractJsonSerializer(typeof(MobileNumber));
var myStream = await ApplicationData.Current.LocalFolder.OpenStreamForReadAsync(JSONFILENAME);
Number = (MobileNumber)jsonSerializer.ReadObject(myStream);
CountryCodeTextBox.Text = Number.countryCode;
WelcometextBox.Text = Number.tenDigits;
InvalidNumberMessageTextBlock.Foreground = new Windows.UI.Xaml.Media.SolidColorBrush(Windows.UI.Colors.Green);
InvalidNumberMessageTextBlock.Text = "The above number is your current emergency contact.";
}
catch (System.Exception)
{
InvalidNumberMessageTextBlock.Foreground = new Windows.UI.Xaml.Media.SolidColorBrush(Windows.UI.Colors.Red);
InvalidNumberMessageTextBlock.Text = "No number saved as of now.";
}
}
private void WelcometextBox_TextChanged(object sender, TextChangedEventArgs e)
{
if (isMobileNumberValid(CountryCodeTextBox.Text, WelcometextBox.Text))
{
GreenTick.Visibility = Windows.UI.Xaml.Visibility.Visible;
RedCross.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
}
else
{
GreenTick.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
RedCross.Visibility = Windows.UI.Xaml.Visibility.Visible;
}
MobileNumber temp = new MobileNumber()
{
countryCode = CountryCodeTextBox.Text, tenDigits = WelcometextBox.Text
};
EnterButtonAction(temp);
}
// Enter Number Button Click
private async void WelcomeButton_click(object sender, RoutedEventArgs e)
{
// Check the validity of the formt of the number entered by the user, and pass it as an object to SendTexyMessage Page.
bool error = false;
// Getting the number entered by the user
string mNumber = WelcometextBox.Text;
// Getting Country Code
string cCode = CountryCodeTextBox.Text;
// Appending to get user's full number
string userNumber = cCode + mNumber;
error = !isMobileNumberValid(cCode, mNumber);
// Erroneous Number entered by user
if (error)
{
InvalidNumberMessageTextBlock.Text = "You have not entered a valid mobile number! Please check and try again!";
}
// Else the entered number has a valid format, serialize it.
else
{
MobileNumber Number = new MobileNumber()
{
countryCode = cCode,
tenDigits = mNumber
};
MainPage.Current.Mnum = Number;
MainPage.Current.NumberFed = true;
// Serialising the entered number
await writeJsonAsync(Number);
// Number saved, now moving back to MainPage
Frame.Navigate(typeof(MainPage), "Disable");
}
}