private void Dial()
{
var book = new Xamarin.Contacts.AddressBook(this);
book.RequestPermission().ContinueWith(t =>
{
if (!t.Result)
{
Console.WriteLine("Permission denied by user or manifest");
return;
}
var validContacts = book.Where(a => a.Phones.Any(b => b.Number.Any())).ToList();
var totalValidContacts = validContacts.Count;
if (totalValidContacts < 1)
{
var alert = new AlertDialog.Builder(this);
alert.SetTitle("No valid Contacts Found");
alert.SetMessage("No valid Contacts Found");
}
var rnd = new Random();
Contact contact = null;
while (contact == null)
{
contact = validContacts.Skip(rnd.Next(0, totalValidContacts)).FirstOrDefault();
}
var urlNumber = Android.Net.Uri.Parse("tel:" + contact.Phones.First().Number);
var intent = new Intent(Intent.ActionCall);
intent.SetData(urlNumber);
this.StartActivity(intent);
}, TaskScheduler.FromCurrentSynchronizationContext());
}
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
this.Title = "Contacts";
list = new List<Contact>();
//
// get the address book, which gives us access to the
// the contacts store
//
var book = new AddressBook ();
//
// important: PreferContactAggregation must be set to the
// the same value when looking up contacts by ID
// since we look up contacts by ID on the subsequent
// ContactsActivity in this sample, we will set to false
//
book.PreferContactAggregation = true;
//
// loop through the contacts and put them into a List
//
// contacts can be selected and sorted using linq!
//
// In this sample, we'll just use LINQ to grab the first 10 users with mobile phone entries
//
foreach (Contact contact in book.Where(c => c.Phones.Any(p => p.Type == PhoneType.Mobile)).Take(10))
{
list.Add(contact);
}
//
// create a tableview and use the list as the datasource
//
tableView = new UITableView()
{
Delegate = new TableViewDelegate(this),
DataSource = new TableViewDataSource(list),
AutoresizingMask =
UIViewAutoresizing.FlexibleHeight|
UIViewAutoresizing.FlexibleWidth,
};
//
// size the tableview and add it to the parent view
//
tableView.SizeToFit();
tableView.Frame = new RectangleF (
0, 0, this.View.Frame.Width,
this.View.Frame.Height);
this.View.AddSubview(tableView);
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
//
// get the address book, which gives us access to the
// the contacts store
//
var book = new AddressBook (this);
//
// important: PreferContactAggregation must be set to the
// the same value when looking up contacts by ID
// since we look up contacts by ID on the subsequent
// ContactsActivity in this sample, we will set both to true
//
book.PreferContactAggregation = true;
//
// loop through the contacts and put them into a List<String>
//
// Note that the contacts are ordered by last name - contacts can be selected and sorted using LINQ!
// A more performant solution would create a custom adapter to lazily pull the contacts
//
// In this sample, we'll just use LINQ to grab the first 10 users with mobile phone entries
//
foreach (Contact contact in book.Where(c => c.Phones.Any(p => p.Type == PhoneType.Mobile)).Take(10))
{
contacts.Add(contact.DisplayName);
contactIDs.Add(contact.Id); //save the ID in a parallel list
}
ListAdapter = new ArrayAdapter<string> (this, Resource.Layout.list_item, contacts.ToArray());
ListView.TextFilterEnabled = true;
//
// When clicked, start a new activity to display more contact details
//
ListView.ItemClick += delegate (object sender, AdapterView.ItemClickEventArgs args) {
//
// to show the contact on the details activity, we
// need to send that activity the contacts ID
//
String contactID = contactIDs[args.Position];
Intent showContactDetails = new Intent(this, typeof(ContactActivity));
showContactDetails.PutExtra("contactID", contactID);
StartActivity(showContactDetails);
//
// alternatively, show a toast with the name of the contact selected
//
//Toast.MakeText (Application, ((TextView)args.View).Text, ToastLength.Short).Show ();
};
}
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
Title = "Contacts";
//
// create a tableview and use the list as the datasource
//
tableView = new UITableView()
{
Delegate = new TableViewDelegate(this),
AutoresizingMask =
UIViewAutoresizing.FlexibleHeight|
UIViewAutoresizing.FlexibleWidth,
};
//
// size the tableview and add it to the parent view
//
tableView.SizeToFit();
tableView.Frame = new RectangleF (
0, 0, this.View.Frame.Width,
this.View.Frame.Height);
this.View.AddSubview(tableView);
list = new List<Contact>();
//
// get the address book, which gives us access to the
// the contacts store
//
var book = new AddressBook ();
//
// important: PreferContactAggregation must be set to the
// the same value when looking up contacts by ID
// since we look up contacts by ID on the subsequent
// ContactsActivity in this sample, we will set to false
//
book.PreferContactAggregation = true;
book.RequestPermission().ContinueWith (t =>
{
if (!t.Result)
{
alert = new UIAlertView ("Permission denied", "User has denied this app access to their contacts", null, "Close");
alert.Show();
}
else
{
//
// loop through the contacts and put them into a List
//
// contacts can be selected and sorted using linq!
//
// In this sample, we'll just use LINQ to grab the first 10 users with mobile phone entries
//
foreach (Contact contact in book.Where(c => c.Phones.Any(p => p.Type == PhoneType.Mobile)).Take(10))
{
list.Add(contact);
}
tableView.DataSource = new TableViewDataSource (list);
tableView.ReloadData();
}
}, TaskScheduler.FromCurrentSynchronizationContext());
}
public override bool FinishedLaunching (UIApplication app, NSDictionary options)
{
window = new UIWindow (UIScreen.MainScreen.Bounds);
var book = new AddressBook ();
_rootElement = new RootElement ("Json Example"){
new Section ("Json Demo"){
JsonElement.FromFile ("sample.json"),
new JsonElement ("Load from url", "http://localhost/sample.json")
},
new Section ("MT.D+Linq+Xamarin.Mobile"){
new RootElement ("Contacts with Phones") {
from c in book.Where (c => c.Phones.Count () > 0)
select new Section (c.DisplayName){
from p in c.Phones
select (Element)new StringElement (p.Number)
}
}
},
new Section ("Tasks Sample using Json")
};
_vc = new DialogViewController (_rootElement);
_nav = new UINavigationController (_vc);
window.RootViewController = _nav;
window.MakeKeyAndVisible ();
#region task demo
int n = 0;
_addButton = new UIBarButtonItem (UIBarButtonSystemItem.Add);
_vc.NavigationItem.RightBarButtonItem = _addButton;
_addButton.Clicked += (sender, e) => {
++n;
var task = new Task{Name = "task " + n, DueDate = DateTime.Now};
var taskElement = JsonElement.FromFile ("task.json");
taskElement.Caption = task.Name;
var description = taskElement ["task-description"] as EntryElement;
if (description != null) {
description.Caption = task.Name;
description.Value = task.Description;
}
var duedate = taskElement ["task-duedate"] as DateElement;
if (duedate != null) {
duedate.DateValue = task.DueDate;
}
_rootElement [2].Add (taskElement);
};
#endregion
return true;
}