1
我正在創建一個iOS應用程序,在該應用程序中,我想在運行方法prepareForSegue之前按按鈕執行賦值操作。如何在iOS中的prepareForSegue之前執行按鈕動作?
我使用主故事板創建了所有控件。
執行的一些按鈕的順序是 按鈕按壓動作 - > prepareForSegue
但對於一些按鈕是 prepareForSegue->按鈕按壓動作
如何更改第二組按鈕的順序?
這裏是我使用的代碼:當給那麼這樣的代碼,我想通了這個問題,
import UIKit
class SummaryViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
var button_prsd = "none"
@IBAction func people_insights(sender: AnyObject) {
button_prsd = "people_insights"
}
@IBAction func industry_research(sender: AnyObject) {
button_prsd = "industry_research"
}
@IBAction func holidays_events(sender: AnyObject) {
button_prsd = "holidays_events"
}
@IBAction func monthly_spotlights(sender: AnyObject) {
button_prsd = "monthly_spotlights"
}
@IBAction func blog(sender: AnyObject) {
button_prsd = "blog"
}
@IBAction func about_us(sender: AnyObject) {
button_prsd = "about_us"
print("button press about us executed")
}
@IBAction func settings(sender: AnyObject) {
button_prsd="settings"
print("button press settings executed")
}
@IBAction func quiz(sender: AnyObject) {
button_prsd="quiz"
print("button press quiz executed")
}
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
let next_view = segue.destinationViewController
if(next_view is DetailViewController)
{
let det_view = next_view as! DetailViewController
det_view.link = button_prsd
print("segue executed")
} else if(next_view is DetailTableViewController)
{
let det_view = next_view as! DetailTableViewController
print("segue executed")
}
}
}
從在界面生成器,從視圖控制器對象卡爾拖動按鈕卸下故事板SEGUE(橙色框)到目的地的場景和名稱。在你的代碼中調用'performSegueWithIdentifier' – Paulw11