Basic usage of uitableview

1. When do I need to use uitableview?

The official documentation is as follows:

 

 

• To let users navigate through hierarchically structured data

• To present an indexed list of items

• To display detail information and controls in visually distinct groupings

• To present a selectable list of options

A simple understanding is that the actual data has a certain level of structure.

2. The presentation of uitableview data is configured by Delegate and datasource (this is very important !!!)

3. uitableview type plain (no interval) and grouped (interval between segments)

Code

1. Create a tableview

@ Interface viewcontroller () <uitableviewdelegate, uitableviewdatasource> // the two protocols must comply

1 // create a tableview object 2 self. tableview = [[uitableview alloc] initwithframe: Self. view. bounds style: uitableviewstyleplain]; 3 // set delegate and datasouce4 _ tableview. delegate = self; 5 _ tableview. datasource = self; 6 // Add to interface 7 [self. view addsubview: _ tableview];

2. Configure delegate and datasource (required)

1 // configure the number of rows in each section (segment) Cell 2 // by default, there is only one section 3-(nsinteger) tableview :( uitableview *) tableview numberofrowsinsection :( nsinteger) section {4 return 5; 5} 6 // What is displayed in each row 7-(uitableviewcell *) tableview :( uitableview *) tableview cellforrowatindexpath :( nsindexpath *) indexpath {8 // set the ID number for each cell (used for reuse) 9 static nsstring * cellid = @ "cellid "; 10 11 // obtain a cell12 uitableviewcell * cell = [t from a queue in tableview Ableview dequeuereusablecellwithidentifier: cellid]; 13 14 // determine whether the cell is not created by itself in the queue. If 15 if (cell = nil) {16 // No, create a 17 cell = [[uitableviewcell alloc] initwithstyle: uitableviewcellstyledefault reuseidentifier: cellid]; 18 19} 20 21 // use cell22 cell. textlabel. TEXT = @ "Haha !!! "; 23 return cell; 24}

Running result

 

Optional

1 // configure multiple sections 2-(nsinteger) numberofsectionsintableview :( uitableview *) tableview {3 return 6; // segment 6 4} 5 6 // set height 7-(cgfloat) tableview :( uitableview *) tableview heightforrowatindexpath :( nsindexpath *) indexpath {8 return 60; 9} 10 11 // a cell is clicked 12-(void) tableview :( uitableview *) tableview didselectrowatindexpath :( nsindexpath *) indexpath {13 // deselect 14 [tableview deselectrowatindexpath: indexpath animated: Yes]; 15}

Effect

 

 

 

Basic usage of uitableview