选择了UItableview部分-迅速

Question

''Hello World'' :) I have a UItableview with 4 different sections. I'm trying to fill each sections with some rows depending on the section selected. I am struggling -__- to detect which section is selected in order to fill them accordingly. In my program I have created 4 uibuttons (outside of the tableview and they represents each user; when a button is selected I use them to name the section header). Now I would like to link the button selected with the section. How one should proceed to know which section is selected. If button A is selected it would mean that section 0 is selected then do operation x in section 0 (like inserting a new row for example); if button B is selected (ie section 1 is selected) then Do operation y and so on...

Thanks in advance for helping a desperate soul

Answer 1

Set tags for buttons.

button1.tag = 0
button2.tag = 1
button3.tag = 2
button4.tag = 3

then add targets

button1.addTarget(self, action: #selector(didTouchButton(_:)), for: .touchUpInside)
button2.addTarget(self, action: #selector(didTouchButton(_:)), for: .touchUpInside)
button3.addTarget(self, action: #selector(didTouchButton(_:)), for: .touchUpInside)
button4.addTarget(self, action: #selector(didTouchButton(_:)), for: .touchUpInside)

then when button will select check sender tag and do operation on section

func didTouchButton(_ sender: UIButton) {
    let section = sender.tag

    //do operations in section
}

Here are examples of inserting and deleting rows in section based on section index. In Swift3 you should base on this methods:

func insertRows(at: [IndexPath], with: UITableViewRowAnimation)
func deleteRows(at: [IndexPath], with: UITableViewRowAnimation)