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Swift appcode tableviews5/17/2023 ![]() An array with 10 elements will have indices from 0 to 9. Next, select “SimpleTableViewController.m” and define an instance variable for holding the table data.Įach of the array elements is identified or accessed by an index. We do not change any of these methods in this example. Optional methods of the protocols let you manage the height of a table row, configure section headings and footers, re-order table cells, etc. UITableViewDelegate, on the other hand, deals with the appearance of the UITableView. Through implementing these methods, you tell Table View how many rows to display and the data in each row. The UITableViewDataSource protocol declares two required methods (tableView:cellForRowAtIndexPath and tableView:numberOfRowsInSection) that you have to implement. It’s the link between your data and the table view. So how do you tell UITableView the list of data to display? UITableViewDataSource is the answer. Or like this example, we’ll use the table view to present a list of recipes. You may display a list of countries or contact names. The UITableView, the actual class behind the Table View, is designed to be flexible to handle various types of data. UITableViewDelegate and UITableViewDataSourceĮarlier, we’ve added the “UITableViewDelegate” and “UITableViewDataSource” protocols in the header file. For now, you do not need the unit test class.
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