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c#androidandroid-fragmentsxamarinandroid-timepicker
amitairos
amitairos

Reputation: 2967

Xamarin TimePicker Fragment Dialog

I'm working on a Xamarin Android app in C#, and I'm trying to implement a TimePicker dialog, in which the user chooses a given time, and they will be notified every day (or the days in the week that he chooses).

I understand There is a TimePickerDialog Control that was deprecated, and that we need to use now a Fragment Dialog. If anyone can help me, I'd very much appreciate it.

Thanks!

Upvotes: 0

Views: 3746

Answers (3)

Abigail Mak
Abigail Mak

Reputation: 21

Here is a sample of how I implemented the TimePickerDialog

  1. Declare the EditText Control (you can just use a TextView)

    EditText startTimeInput = FindViewById(Resource.Id.newEventStartTimeInput);

  2. Create a TimePickerFragment by extending the DialogFragment and handle OnCreate and OnTimeSet methods

    //Time Picker
public class TimePickerFragment : DialogFragment, 
                          TimePickerDialog.IOnTimeSetListener
{
    // TAG can be any string of your choice.
    public static readonly string TAG = "Y:" + typeof(TimePickerFragment).Name.ToUpper();

    // Initialize this value to prevent NullReferenceExceptions.
    Action<TimeSpan> _timeSelectedHandler = delegate { };

    public static TimePickerFragment NewInstance(Action<TimeSpan> onTimeSet)
    {
        TimePickerFragment frag = new TimePickerFragment();
        frag._timeSelectedHandler = onTimeSet;
        return frag;
    }

    public override Dialog OnCreateDialog(Bundle savedInstanceState)
    {
        Calendar c = Calendar.Instance;
        int hour = c.Get(CalendarField.HourOfDay);
        int minute = c.Get(CalendarField.Minute);
        bool is24HourView = true;
        TimePickerDialog dialog = new TimePickerDialog(Activity,
                                                       this,
                                                       hour,
                                                       minute,
                                                       is24HourView);
        return dialog;
    }

    public void OnTimeSet(TimePicker view, int hourOfDay, int minute)
    {
        //Do something when time chosen by user
        TimeSpan selectedTime = new TimeSpan(hourOfDay, minute, 00);
        Log.Debug(TAG, selectedTime.ToString());
        _timeSelectedHandler(selectedTime);
    }
}

  3. Show Fragment

        private void StartTimeInput_Click(object sender, EventArgs e)
{
    TimePickerFragment frag = TimePickerFragment.NewInstance(delegate (TimeSpan time)
    {
        startTimeInput.Text = time.ToString();
    });
    frag.Show(FragmentManager, TimePickerFragment.TAG);
}

Hope this helps!

Upvotes: 1

Giorgi
Giorgi

Reputation: 30883

Here is sample code from project:

class TimePickerFragment : DialogFragment
{
    public override Dialog OnCreateDialog(Bundle savedInstanceState)
    {
        return new TimePickerDialog(Activity, (sender, args) =>
        {
            //args contains new time
        }, DateTime.Now.Hour, DateTime.Now.Minute, true);
    }
}

Upvotes: 3

Jon Douglas
Jon Douglas

Reputation: 13176

Your best bet would be to extend DialogFragment and create your own TimePickerFragment from it. Android even has a whole doc on the topic:

http://developer.android.com/guide/topics/ui/controls/pickers.html#TimePicker

(Note: You will have to convert the respective Java -> C# but that shouldn't be too much of an issue)

public class TimePickerFragment : DialogFragment, TimePickerDialog.IOnTimeSetListener
{
    public override Dialog OnCreateDialog(Bundle savedInstanceState)
    {
        Calendar c = Calendar.Instance;
        int hour = c.Get(CalendarField.HourOfDay);
        int minute = c.Get(CalendarField.Minute);
        return new TimePickerDialog(Activity, this, hour, minute, DateFormat.Is24HourFormat(Activity));
    }

    public void OnTimeSet(TimePicker view, int hourOfDay, int minute)
    {
        //Do something when time chosen by user
    }
}

Upvotes: 3

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