protected override async void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.heightView);
MobileServiceClient client = ToDoActivity.CurrentActivity.CurrentClient;
UsersTableRef = client.GetTable <UsersTable>();
enterHeight = FindViewById <EditText>(Resource.Id.enterHeight);
enterHeight.Visibility = ViewStates.Gone;
heightText = FindViewById <TextView>(Resource.Id.heightText);
updateMyHeight = FindViewById <Button>(Resource.Id.updateButton);
updateMyHeight.Visibility = ViewStates.Gone;
enterHeight.TextChanged += (object sender, Android.Text.TextChangedEventArgs e) => {
//https://msdn.microsoft.com/en-us/library/0xh24xh4.aspx
string value = e.Text.ToString();
System.Globalization.NumberStyles style;
System.Globalization.CultureInfo culture;
float number;
style = System.Globalization.NumberStyles.Number;
culture = System.Globalization.CultureInfo.CreateSpecificCulture("en-GB");
if (Single.TryParse(value, style, culture, out number))
{
Console.WriteLine("Converted '{0}' to {1}.", value, number);
string message = "Converted " + value + "to " + number;
enteredHeight = number;
}
else
{
Console.WriteLine("Unable to convert '{0}'.", value);
string message = "Unable to convert " + value;
enteredHeight = 0;
}
};
updateMyHeight.Click += (sender, e) =>
{
heightText.Text = "Please Enter Your Height as a Decimal Number";
enterHeight.Visibility = ViewStates.Visible;
updateMyHeight.Visibility = ViewStates.Gone;
OKupdateButton.Visibility = ViewStates.Visible;
};
OKButton = FindViewById <Button>(Resource.Id.OKButton);
OKButton.Visibility = ViewStates.Gone;
OKButton.Click += async(sender, e) =>
{
if (enteredHeight > 0)
{
try
{
OKButton.Visibility = ViewStates.Gone;
heightText.Visibility = ViewStates.Gone;
enterHeight.Visibility = ViewStates.Gone;
//enter user's info to UsersTable
var userUpdated = new UsersTable
{
UniqueUsername = ourUserId,
height = enteredHeight,
};
await UsersTableRef.InsertAsync(userUpdated);
heightText.Text = "Height Inserted to Database Successfully";
heightText.Visibility = ViewStates.Visible;
finishActivity.Visibility = ViewStates.Visible;
}
catch (Exception ex)
{
CreateAndShowDialog(ex, "Error");
}
}
else
{
CreateAndShowDialog("Please insert a decimal number larger than 0", "Input Error");
}
};
OKupdateButton = FindViewById <Button>(Resource.Id.OKUpdateCaseButton);
OKupdateButton.Visibility = ViewStates.Gone;
OKupdateButton.Click += async(sender, e) =>
{
if (enteredHeight > 0 && ourUser != null)
{
try
{
OKupdateButton.Visibility = ViewStates.Gone;
ourUser.height = enteredHeight;
heightText.Visibility = ViewStates.Gone;
enterHeight.Visibility = ViewStates.Gone;
await UsersTableRef.UpdateAsync(ourUser);
heightText.Text = "Height Updated Successfully";
heightText.Visibility = ViewStates.Visible;
finishActivity.Visibility = ViewStates.Visible;
}
catch (Exception ex)
{
CreateAndShowDialog(ex, "Error");
}
}
else
{
CreateAndShowDialog("Please insert a decimal number larger than 0", "Input Error");
}
};
finishActivity = FindViewById <Button>(Resource.Id.FinishActivity);
finishActivity.Visibility = ViewStates.Gone;
finishActivity.Click += (sender, e) =>
{
Finish();
};
try
{
ourUser = await fetchHeightAsync();
}
catch (Exception ex)
{
CreateAndShowDialog(ex, "Error");
}
}
protected override async void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
SetContentView(Resource.Layout.BMIview);
MobileServiceClient client = ToDoActivity.CurrentActivity.CurrentClient;
weighTableRef = client.GetTable <weighTable>();
UsersTableRef = client.GetTable <UsersTable>();
var enterHeight = FindViewById <EditText>(Resource.Id.enterHeight);
var heightText = FindViewById <TextView>(Resource.Id.heightText);
var BMI_text = FindViewById <TextView>(Resource.Id.BMI_TextView);
BMI_text.Visibility = ViewStates.Gone;
FindViewById <TextView>(Resource.Id.Category_TextView).Visibility = ViewStates.Gone;
heightText.Visibility = ViewStates.Gone;
enterHeight.Visibility = ViewStates.Gone;
var wikiLinkButton = FindViewById <Button>(Resource.Id.BMIwikiLink);
wikiLinkButton.Visibility = ViewStates.Gone;
wikiLinkButton.Click += delegate {
var uri = Android.Net.Uri.Parse("https://en.wikipedia.org/wiki/Body_mass_index#Categories");
var intent = new Intent(Intent.ActionView, uri);
StartActivity(intent);
};
enterHeight.TextChanged += (object sender, Android.Text.TextChangedEventArgs e) => {
//https://msdn.microsoft.com/en-us/library/0xh24xh4.aspx
string value = e.Text.ToString();
System.Globalization.NumberStyles style;
System.Globalization.CultureInfo culture;
float number;
style = System.Globalization.NumberStyles.Number;
culture = System.Globalization.CultureInfo.CreateSpecificCulture("en-GB");
if (Single.TryParse(value, style, culture, out number))
{
Console.WriteLine("Converted '{0}' to {1}.", value, number);
string message = "Converted " + value + "to " + number;
enteredHeight = number;
}
else
{
Console.WriteLine("Unable to convert '{0}'.", value);
string message = "Unable to convert " + value;
enteredHeight = 0;
}
};
var OKButton = FindViewById <Button>(Resource.Id.OKButton);
OKButton.Visibility = ViewStates.Gone;
OKButton.Click += async(sender, e) =>
{
if (enteredHeight > 0)
{
//enter user's info to UsersTable and then calculate BMI
var userUpdated = new UsersTable
{
UniqueUsername = ourUserId,
height = enteredHeight,
};
try
{
await UsersTableRef.InsertAsync(userUpdated);
OKButton.Visibility = ViewStates.Gone;
heightText.Visibility = ViewStates.Gone;
enterHeight.Visibility = ViewStates.Gone;
await CalculateUserBMI();
}
catch (Exception ex)
{
CreateAndShowDialog(ex, "Error");
}
}
else
{
CreateAndShowDialog("Please insert a decimal number larger than 0", "Input Error");
}
};
try
{
var userRecord = await UsersTableRef.Where(item => (item.UniqueUsername == ourUserId)).ToListAsync();
if (userRecord.Count == 0)
{
heightText.Visibility = ViewStates.Visible;
enterHeight.Visibility = ViewStates.Visible;
OKButton.Visibility = ViewStates.Visible;
}
//user already entered height:
else
{
var user = userRecord[0];
float height = user.height;
//check if there are weighs of this user in the weighTable:
var weighRecords = await weighTableRef.Where(item => (item.username == ourUserId)).ToListAsync();
if (weighRecords.Count == 0)
{
CreateAndShowDialog("No previous weighs were found. Please weigh yourself and try again", "Cannot calculate BMI");
}
else
{
//calculate BMI from user's most recent weighing:
var mostRecendWeigh = weighRecords[weighRecords.Count - 1];
float weight = mostRecendWeigh.weigh;
//BMI formula from wikipedia: BMI = weight in kg / (height in meters)^2
//https://en.wikipedia.org/wiki/Body_mass_index
double heigtSquared = Math.Pow(height, 2);
double BMI = weight / heigtSquared;
string BMIInStringFormat = String.Format("{0:0.00}", BMI);
string BMI_message = "Your most recent weight = " + weight + "\nYour BMI = " + BMIInStringFormat;
var BMItext = FindViewById <TextView>(Resource.Id.BMI_TextView);
BMItext.Visibility = ViewStates.Visible;
BMItext.Text = BMI_message;
CalculateBMICategory(BMI);
}
}
}
catch (Exception e)
{
CreateAndShowDialog(e, "Error");
}
}
