覆盖漏斗viewDidLoad

Question

，我怎样才能解决这个问题？告诉我viewDidLoad被声明了两次，但是我可以统一整个过程？?。

import UIKit
import MessageUI
import CoreData
import MediaPlayer
import AVFoundation

class ViewController: UIViewController, UISearchBarDelegate, MFMailComposeViewControllerDelegate, MPMediaPickerControllerDelegate, AVAudioPlayerDelegate {
        override func viewDidLoad() {
        super.viewDidLoad()

        title = "Media picker..."

        buttonPickAndPlay = UIButton.buttonWithType(.System) as? UIButton

        if let pickAndPlay = buttonPickAndPlay{
            pickAndPlay.frame = CGRect(x: 0, y: 0, width: 200, height: 37)
            pickAndPlay.center = CGPoint(x: view.center.x, y: view.center.y - 50)
            pickAndPlay.setTitle("Pick and Play", forState: .Normal)
            pickAndPlay.addTarget(self,
                action: "displayMediaPickerAndPlayItem",
                forControlEvents: .TouchUpInside)
            view.addSubview(pickAndPlay)
        }

        buttonStopPlaying = UIButton.buttonWithType(.System) as? UIButton

        if let stopPlaying = buttonStopPlaying{
            stopPlaying.frame = CGRect(x: 0, y: 0, width: 200, height: 37)
            stopPlaying.center = CGPoint(x: view.center.x, y: view.center.y + 50)
            stopPlaying.setTitle("Stop Playing", forState: .Normal)
            stopPlaying.addTarget(self,
                action: "stopPlayingAudio",
                forControlEvents: .TouchUpInside)
            view.addSubview(stopPlaying)
        }
    }

    @IBOutlet weak var Subject: UITextField!


    @IBOutlet weak var Body: UITextView!

    @IBOutlet weak var searchBar: UISearchBar!

    @IBOutlet weak var webView: UIWebView!


    override func viewDidLoad() {
        super.viewDidLoad()


        searchBar?.delegate = self

        let url = NSURL(string: "http://www.google.com")
        let request = NSURLRequest(URL: url!)

        webView?.scalesPageToFit = true
        webView?.loadRequest(request)

    }

}

Answer 1

只需将两个中的一个移动到另一个，除了这一行super.viewDidLoad()之外，它必须被调用一次：

override func viewDidLoad() {
    super.viewDidLoad()

    title = "Media picker..."

    buttonPickAndPlay = UIButton.buttonWithType(.System) as? UIButton

    if let pickAndPlay = buttonPickAndPlay{
        pickAndPlay.frame = CGRect(x: 0, y: 0, width: 200, height: 37)
        pickAndPlay.center = CGPoint(x: view.center.x, y: view.center.y - 50)
        pickAndPlay.setTitle("Pick and Play", forState: .Normal)
        pickAndPlay.addTarget(self,
            action: "displayMediaPickerAndPlayItem",
            forControlEvents: .TouchUpInside)
        view.addSubview(pickAndPlay)
    }

    buttonStopPlaying = UIButton.buttonWithType(.System) as? UIButton

    if let stopPlaying = buttonStopPlaying{
        stopPlaying.frame = CGRect(x: 0, y: 0, width: 200, height: 37)
        stopPlaying.center = CGPoint(x: view.center.x, y: view.center.y + 50)
        stopPlaying.setTitle("Stop Playing", forState: .Normal)
        stopPlaying.addTarget(self,
            action: "stopPlayingAudio",
            forControlEvents: .TouchUpInside)
        view.addSubview(stopPlaying)
    }

    ///

    searchBar?.delegate = self

    let url = NSURL(string: "http://www.google.com")
    let request = NSURLRequest(URL: url!)

    webView?.scalesPageToFit = true
    webView?.loadRequest(request)
}

只是好奇，你为什么要声明两次这个方法？