Swift에 포함 된 경우

Swift에 포함 된 경우

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내 앱을 Swift 언어로 변환하려고합니다.

이 코드 줄이 있습니다.

[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil]
                     setTitleTextAttributes:textDictionary
                                   forState:UIControlStateNormal];

그것을 스위프트로 변환하는 방법?

에서 애플의 워드 프로세서 , 그런 방법이 없습니다.

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iOS 9 용 업데이트 :

iOS 9 이상 (Xcode 7 b1 기준)을 대상으로하는 UIAppearance경우 varargs를 사용하지 않는 새로운 방법이 프로토콜에 있습니다.

static func appearanceWhenContainedInInstancesOfClasses(containerTypes: [AnyObject.Type]) -> Self

다음과 같이 사용할 수 있습니다.

UITextField.appearanceWhenContainedInInstancesOfClasses([MyViewController.self]).keyboardAppearance = .Light

여전히 iOS 8 또는 이전 버전을 지원해야하는 경우이 질문에 대한 다음 원래 답변을 사용하십시오.

iOS 8 및 7의 경우 :

Obj-C varargs 메소드는 Swift와 호환되지 않으므로이 메소드는 Swift에서 사용할 수 없습니다 ( http://www.openradar.me/17302764 참조 ).

나는 Swift에서 작동하는 비 가변적 해결 방법을 작성했습니다 ( UIBarItem에서 유래하지 않은 동일한 방법을 반복했습니다 UIView).

// UIAppearance+Swift.h
#import <UIKit/UIKit.h>
NS_ASSUME_NONNULL_BEGIN
@interface UIView (UIViewAppearance_Swift)
// appearanceWhenContainedIn: is not available in Swift. This fixes that.
+ (instancetype)my_appearanceWhenContainedIn:(Class<UIAppearanceContainer>)containerClass;
@end
NS_ASSUME_NONNULL_END

—

// UIAppearance+Swift.m
#import "UIAppearance+Swift.h"
@implementation UIView (UIViewAppearance_Swift)
+ (instancetype)my_appearanceWhenContainedIn:(Class<UIAppearanceContainer>)containerClass {
    return [self appearanceWhenContainedIn:containerClass, nil];
}
@end

#import "UIAppearance+Swift.h"브리징 헤더에 있어야 합니다.

그런 다음 Swift에서 전화를 걸려면 (예 :)

# Swift 2.x:
UITextField.my_appearanceWhenContainedIn(MyViewController.self).keyboardAppearance = .Light

# Swift 3.x:
UITextField.my_appearanceWhenContained(in: MyViewController.self).keyboardAppearance = .light

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ios 10 swift 3

UIBarButtonItem.appearance(whenContainedInInstancesOf: [UISearchBar.self]).title = "Kapat"

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iOS 8 및 7의 경우 :

Alex의 답변을 기반으로 범주를 사용하여 여러 컨테이너를 지정합니다. 이것은 Apple appearanceWhenContainedIn이 Swift에서 공식적으로 지원할 때까지의 해결 방법 입니다.

UIAppearance + Swift.h

@interface UIView (UIAppearance_Swift)
/// @param containers An array of Class<UIAppearanceContainer>
+ (instancetype)appearanceWhenContainedWithin: (NSArray *)containers;
@end

UIAppearance + Swift.m

@implementation UIView (UIAppearance_Swift)

+ (instancetype)appearanceWhenContainedWithin: (NSArray *)containers
{
    NSUInteger count = containers.count;
    NSAssert(count <= 10, @"The count of containers greater than 10 is not supported.");

    return [self appearanceWhenContainedIn:
            count > 0 ? containers[0] : nil,
            count > 1 ? containers[1] : nil,
            count > 2 ? containers[2] : nil,
            count > 3 ? containers[3] : nil,
            count > 4 ? containers[4] : nil,
            count > 5 ? containers[5] : nil,
            count > 6 ? containers[6] : nil,
            count > 7 ? containers[7] : nil,
            count > 8 ? containers[8] : nil,
            count > 9 ? containers[9] : nil,
            nil];
}
@end

그런 다음 #import "UIAppearance+Swift.h"브리징 헤더에 추가 하십시오.

스위프트에서 사용하려면 :

TextField.appearanceWhenContainedWithin([MyViewController.self, TableViewController.self]).keyboardAppearance = .Light

CVarArgType을 사용하여 방법을 찾을 수 있다면 좋았지 만 깨끗한 해결책을 찾지 못했습니다.

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@tdun에서 영감을 얻은 덜 추악하지만 여전히 추악한 해결 방법이 있습니다.

1. Objective-C 모양을 담을 클래스를 만듭니다. 이 예제의 목적으로 호출 해 봅시다 AppearanceBridger.
2. 이 클래스를 브리징 헤더에 추가하십시오. 브리징 헤더가 없으면을 만드십시오 .
3. Create a class method in AppearanceBridger named +(void)setAppearance and put the Objective-C appearance code in this method. For example:

+ (void)setAppearance {
    [[UIView appearanceWhenContainedIn:[UITableViewHeaderFooterView class], nil] setBackgroundColor:[UIColor whiteColor]];
}

4. In your Swift code where you set the appearance, call AppearanceBridger.setAppearance() and you should be good to go!

Hope this works well for people who see it.

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Here's an ugly workaround solution I used....

Just make an Objective-C Cocoa Touch Class (UIViewController), named whatever you want.

I named mine WorkaroundViewController...

Now in (WorkaroundViewController.m):

-(id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

Run the Objective-C appearance code for .appearanceWhenContainedIn() (here's my example):

[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setDefaultTextAttributes:@{NSFontAttributeName: [UIFont fontWithName:@"Avenir-Light" size:16.0f]}];

Then create a bridging header for your Swift project and then initialize your Objective-C ViewController in your Swift code, like this (again, just my example):

var work : WorkaroundViewController = WorkaroundViewController()

Then you're done! Let me know if it works for you... Like I said, it's ugly, but works!

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This can be extended to any class that conforms to the UIAppearance protocol -- not just UIViews. So here's a more generic version:

UIAppearance+Swift.h

#import <UIKit/UIKit.h>

@interface NSObject (UIAppearance_Swift)

+ (instancetype)appearanceWhenContainedWithin:(Class<UIAppearanceContainer>)containerClass;

@end

UIAppearance+Swift.m

#import "UIAppearance+Swift.h"

@implementation NSObject (UIAppearance_Swift)

+ (instancetype)appearanceWhenContainedWithin:(Class<UIAppearanceContainer>)containerClass {
    if ([self conformsToProtocol:@protocol(UIAppearance)]) {
        return [(id<UIAppearance>)self appearanceWhenContainedIn:containerClass, nil];
    }
    return nil;
}

@end

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I have created a repo for you guys who wanna use CocoaPods:

1. Add this into your Podfile:

   pod 'UIViewAppearanceSwift'
   

2. Import in your class:

   import UIViewAppearanceSwift
   
   func layout() {
       UINavigationBar.appearanceWhenContainedWithin(MFMailComposeViewController.self).barStyle = .Black
       UIBarButtonItem.appearanceWhenContainedWithin(UISearchBar.self).setTitleTextAttributes([NSFontAttributeName: UIFont.systemFontOfSize(15)], forState: UIControlState.Normal)
   }
   

3. Reference: https://github.com/levantAJ/UIViewAppearanceSwift

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Swift 4: iOS 9+

UIProgressView.appearance(whenContainedInInstancesOf: [LNPopupBar.self]).tintColor = .red

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It seems Swift (at least as of Beta5) isn't able to support it for reasons unknown to me. Perhaps the language feature required is still in progress, as I can only assume they left it out of the interface for a good reason. Like you said, according to the docs it's still available in ObjC. Really disappointing.

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You can use this:

UIBarButtonItem.appearance().setTitleTextAttributes(textDictionary, forState: UIControlState.Normal)

Edit: appearanceWhenContainedIn was removed in Swift. This answer was for the Beta 5 to change the appearance of the text of all bar buttons.

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You should be able to just translate the Objective-C syntax into Swift syntax.

In swift the methods should be declared like this:

func appearanceWhenContainedIn(containerClass : <UIAppearanceContainer>)
func setTitleTextAttributes(_ attributes: NSDictionary!, forState state: UIControlState)

So you can try this:

UIBarButtonItem.appearanceWhenContainedIn(UINavigationBar).setTitleTextAttributes(textDictionary, forState: UIControlStateNormal)

I still have to figure out if this is the clean way to call a class method in Swift though.

Hope this helps,

참고URL : https://stackoverflow.com/questions/24136874/appearancewhencontainedin-in-swift