private void SaveJsonDetails()
{
JsonToObject @object = new JsonToObject(this.Weight, this.WakeUptime,
this.BedTime, this.MeasureSys);
jsonToObjects.Add(@object);
// write the list to a local file
string path = Environment.GetFolderPath(
Environment.SpecialFolder.LocalApplicationData);
string filename = Path.Combine(path, JSON_FILENAME);
// use a stream writer to write the text out to file
using (var streamWriter = new StreamWriter(filename, false))
{
// serialise the dogs list to a string using the jsonconvert library
string jsonText = JsonConvert.SerializeObject(jsonToObjects);
streamWriter.WriteLine(jsonText);
}
DisplayAlert("Success", "Succesfully saved to local storage", "Ok");
}
private void ReadFromJson()
{
try
{
// Read the list from a local file
string path = Environment.GetFolderPath(
Environment.SpecialFolder.LocalApplicationData);
string filename = Path.Combine(path, JSON_FILENAME);
// use a stream reader to read the text out to file
using (var streamReader = new StreamReader(filename, false))
{
string jsonText = streamReader.ReadToEnd();
jsonToObjects = JsonConvert.DeserializeObject <List <JsonToObject> >(jsonText);
}
// create object to assign values from list into variables
JsonToObject objs = new JsonToObject();
foreach (var obj in jsonToObjects)
{ // used to run throw list and take latest entry into list (most up-to-date)
objs.Weight = obj.Weight;
amountTarget = objs.DrinkAmount(objs.Weight);
targetWaterIntake.Text = "Target : " + amountTarget + " mls";
objs.WakeUpTime = obj.WakeUpTime;
objs.SleepTime = obj.SleepTime;
double guidePerHour = objs.TargetLine(amountTarget);
guide.Text = "Guide amount to drink : " + guidePerHour + " mls p/hour";
objs.MeasureSys = obj.MeasureSys;
}
}
catch (FileNotFoundException)
{
// on error of finding local file ,
// Settings Page must be loaded for configuration
Navigation.PushAsync(new Settings());
// on error reading local file, use default file
// need a link to the assembly (dll) to get the file
var assembly = IntrospectionExtensions.GetTypeInfo(typeof(MainPage)).Assembly;
// create a stream to access the file
Stream stream = assembly.GetManifestResourceStream(
"waterAppDev2018.Model.LocalStorage.txt");
using (var reader = new StreamReader(stream))
{
string jsonText = reader.ReadToEnd();
jsonToObjects = JsonConvert.DeserializeObject <List <JsonToObject> >(jsonText);
}
// create object to assign values from list into variables
JsonToObject json = new JsonToObject();
foreach (var obj in jsonToObjects)
{
json.Weight = obj.Weight;
int amountTarget = json.DrinkAmount(json.Weight);
targetWaterIntake.Text = "Target : " + amountTarget + " mls";
json.WakeUpTime = obj.WakeUpTime;
json.SleepTime = obj.SleepTime;
double guidePerHour = json.TargetLine(amountTarget);
guide.Text = "Guide amount to drink : " + guidePerHour + " mls p/hour";
json.MeasureSys = obj.MeasureSys;
}
}//catch
}
public JsonToObject()
{
JsonToObject j = new JsonToObject(this.Weight, this.WakeUpTime,
this.SleepTime, this.MeasureSys);
}
