Last listened to Eazy-Duz-It by Eazy-E (on 8 Sep 2010, 21:09)

Selecting a contact from the Address Book with MonoTouch

This screencast shows how to programmatically select a contact from the address book in a MonoTouch iPhone application, in only 5 minutes.

The key bit of code is to create an ABPeoplePickerNavigationController, and then take advantage of its SelectPerson event. The brief idea is shown in this code snippet:

var picker = new ABPeoplePickerNavigationController();

picker.SelectPerson +=
delegate(object sender, ABPeoplePickerSelectPersonEventArgs e) {
ABPerson selectedPerson = e.Person;
// do something with 'selectedPerson'
};

Hope you found this screencast helpful.

Deleting cells from a UITableView with MonoTouch

This screencast shows the end-to-end process of how to create a simple iPhone application with MonoTouch. The application displays data in a table, and gives the user the ability to delete cells from the table.

The application consists of a UINavigationController, a UITableViewController and of course some UITableViewCells which can be deleted from their containing table.

Some things I mention in the screencast are:

  • Just like in my UINavigationController RSS example, I am using a template for UITableViewControllers which is based on the one I found at Code Snack.
  • Swipe to delete is enabled simply by overriding the CommitEditingStyle method in your UITableViewDataSource class.

The key bit of code from this example is the CommitEditingStyle method:

class DataSource : UITableViewDataSource
{
EmployeesTableViewController tvc;

// ...

public override void CommitEditingStyle(UITableView tableView,
UITableViewCellEditingStyle editingStyle,
NSIndexPath indexPath)
{
if (editingStyle == UITableViewCellEditingStyle.Delete)
{
tvc.Employees.RemoveAt(indexPath.Row);
tableView.DeleteRows(new [] { indexPath }, UITableViewRowAnimation.Fade);
}
}
// ...