Swift覚え書き

自分用の覚え書きです。
Swift1.x混ざってるかも。

AppDelegateをインスタンス化

private let myApp:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate

Segueを使わず、コードで遷移

let userRegistViewController:UserRegistViewController = self.storyboard!.instantiateViewControllerWithIdentifier("UserRegistView") as! UserRegistViewController
self.presentViewController( userRegistViewController, animated: false, completion: nil)
Segueで遷移時に値の受け渡し方

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if (segue.identifier == "SegueIdx") {
        let controller:SecondViewController = segue.destinationViewController as! SecondViewController
            // controller.idx = 1
        }
    }

StoryBoad上でカスタムUIの反映

IBDesignablでカスタムクラスを作ってStoryBoadに適用する

例えば角丸ボタンができる

import UIKit

@IBDesignable

class RadiusUIButton: UIButton {

    @IBInspectable var textColor: UIColor?

    @IBInspectable var cornerRadius: CGFloat = 0 {
        didSet {
            layer.cornerRadius = cornerRadius
        }
    }

    @IBInspectable var borderWidth: CGFloat = 0 {
        didSet {
            layer.borderWidth = borderWidth
        }
    }

    @IBInspectable var borderColor: UIColor = UIColor.clearColor() {
        didSet {
            layer.borderColor = borderColor.CGColor
        }
    }

}

Bridge-Header Sample

#ifndef catalogApp_Bridging_Header_h
#define catalogApp_Bridging_Header_h

//#import "AFNetworking.h"
//#import "AFNetworkActivityLogger.h"

#import "MWFeedParser.h"
#import "SVProgressHUD.h"
#import "sqlite3.h"

#import <GoogleMobileAds/GoogleMobileAds.h>
//#import "GADBannerView.h"
//#import "GADInterstitial.h"

//#import <GoogleAnalytics-iOS-SDK/GAI.h>
//#import <GoogleAnalytics-iOS-SDK/GAIFields.h>
//#import <GoogleAnalytics-iOS-SDK/GAILogger.h>
//#import <GoogleAnalytics-iOS-SDK/GAIDictionaryBuilder.h>
#endif

• BuildSettings > Objective-C Bridge Header
• appName/Bridge-Header.h

ステータスバーの色

info.plistに以下２つのkeyとvalueを追加する

View controller-based status bar appearance

• NO : アプリ全体で設定
• YES : ViewControllerごとに設定

Status bar style

• Gray style (default) : 文字色が黒になる
• Transparent black style (alpha of 0.5) : 文字色が白になる(iOS7以降では非対応)
• Opaque black style : 文字色が白になる(iOS7以降では非対応)
• UIStatusBarStyleLightContent : 文字色が白くなる(iOS7以降)

汎用アラート

func showAlert( title:String = "title", text:String = "text") {

    let alert = UIAlertController(title: title, message: text, preferredStyle: UIAlertControllerStyle.Alert)

    alert.addAction( UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: {
        (alert: UIAlertAction!) in

    })
    )

    self.presentViewController(alert, animated: true, completion: nil)
}

GCD便利用

dispatch_async_global {

    // サブスレッド

    self.dispatch_async_main {

        // メインスレッド

    }
}

func dispatch_async_main(block: () -> ()) {
    dispatch_async(dispatch_get_main_queue(), block)
}

func dispatch_async_global(block: () -> ()) {
       dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block)
}