iOS 7에서 완전히 투명한 탐색 표시 줄을 만드는 방법

iOS 7에서 완전히 투명한 탐색 표시 줄을 만드는 방법

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내 앱의 UINavigationBar가 완전히 투명하고 그 아래의 뷰 컨트롤러로 플러시되기를 원합니다. 그러나 내가 찾을 수있는 유일한 코드는 반투명하지만 투명하지는 않습니다. 노트 앱에서 사용되기 때문에 iOS 7 에서이 작업을 수행 할 수 있다는 것을 알고 있습니다. 내 질문은 그들이 사용했던 코드는 무엇입니까?

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에서 이 답변

[self.navigationController.navigationBar setBackgroundImage:[UIImage new]
                     forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [UIImage new];
self.navigationController.navigationBar.translucent = YES;
self.navigationController.view.backgroundColor = [UIColor clearColor];
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];

또한 Josh가 의견에서 제안한대로 막대를 기본값으로 다시 설정하십시오.

[self.navigationController.navigationBar setBackgroundImage:nil
                     forBarMetrics:UIBarMetricsDefault];

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Swift3 및 Swift4의 경우

self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = true

스위프트 2.2

 self.navigationController?.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .Default)
 self.navigationController?.navigationBar.shadowImage = UIImage()
 self.navigationController?.navigationBar.translucent = true

오브젝티브 -C

[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [UIImage new];
self.navigationController.navigationBar.translucent = YES;

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Objective-C 카테고리로서의 자체 솔루션 :

UINavigationController + TransparentNavigationController.h

@interface UINavigationController (TransparentNavigationController)
- (void)presentTransparentNavigationBar;
- (void)hideTransparentNavigationBar;
@end

UINavigationController + TransparentNavigationController.m

#import "UINavigationController+TransparentNavigationController.h"

@implementation UINavigationController (TransparentNavigationController)

- (void)presentTransparentNavigationBar
{
  [self.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
  [self.navigationBar setTranslucent:YES];
  [self.navigationBar setShadowImage:[UIImage new]];
  [self setNavigationBarHidden:NO animated:YES];
}

- (void)hideTransparentNavigationBar
{
  [self setNavigationBarHidden:YES animated:NO];
  [self.navigationBar setBackgroundImage:[[UINavigationBar appearance] backgroundImageForBarMetrics:UIBarMetricsDefault] forBarMetrics:UIBarMetricsDefault];
  [self.navigationBar setTranslucent:[[UINavigationBar appearance] isTranslucent]];
  [self.navigationBar setShadowImage:[[UINavigationBar appearance] shadowImage]];
}

@end

이제 카테고리를 UIViewController가져와 내비게이션 컨트롤러에서 메소드를 호출 할 수 있습니다 ( 예 :

#import "UINavigationController+TransparentNavigationController.h"

- (void)viewWillAppear:(BOOL)animated
{
  [super viewWillAppear:animated];
  [self.navigationController presentTransparentNavigationBar];
}

- (void)viewWillDisappear:(BOOL)animated
{
  [super viewWillDisappear:animated];
  [self.navigationController hideTransparentNavigationBar];
}

And a similar solution in Swift:

import Foundation
import UIKit

extension UINavigationController {

  public func presentTransparentNavigationBar() {
    navigationBar.setBackgroundImage(UIImage(), forBarMetrics:UIBarMetrics.Default)
    navigationBar.translucent = true
    navigationBar.shadowImage = UIImage()
    setNavigationBarHidden(false, animated:true)
  }

  public func hideTransparentNavigationBar() {
    setNavigationBarHidden(true, animated:false)
    navigationBar.setBackgroundImage(UINavigationBar.appearance().backgroundImageForBarMetrics(UIBarMetrics.Default), forBarMetrics:UIBarMetrics.Default)
    navigationBar.translucent = UINavigationBar.appearance().translucent
    navigationBar.shadowImage = UINavigationBar.appearance().shadowImage
  }
}

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Alan forgot one line

self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];

So I have:

[self.navigationController.navigationBar setTranslucent:YES];
self.navigationController.view.backgroundColor = [UIColor clearColor];
[self.navigationController.navigationBar setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [[UIImage alloc] init];
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];

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@Zorayr's great answer revised to Swift 3 :

import Foundation
import UIKit

extension UINavigationController {

    public func presentTransparentNavigationBar() {
        navigationBar.setBackgroundImage(UIImage(), for:.default)
        navigationBar.isTranslucent = true
        navigationBar.shadowImage = UIImage()
        setNavigationBarHidden(false, animated:true)
    }

    public func hideTransparentNavigationBar() {
        setNavigationBarHidden(true, animated:false)
        navigationBar.setBackgroundImage(UINavigationBar.appearance().backgroundImage(for: UIBarMetrics.default), for:.default)
        navigationBar.isTranslucent = UINavigationBar.appearance().isTranslucent
        navigationBar.shadowImage = UINavigationBar.appearance().shadowImage
    }
}

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Swift 4.2 and iOS 12

It turns out all you really need is the code below. It works perfectly when you put it into viewDidLoad().

// removes line at bottom of navigation bar
navigationController?.navigationBar.shadowImage = UIImage()

// makes navigation bar completely transparent
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationController?.navigationBar.isTranslucent = true

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Use UINavigationBar+Addition pod, then simply call:

UINavigationBar *navigationBar = self.navigationController.navigationBar;
[navigationBar makeTransparent];

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[(UIView*)[self.navigationController.navigationBar.subviews objectAtIndex:0] setAlpha:0.0f];

That one line seemed to work perfectly for me

참고URL : https://stackoverflow.com/questions/19082963/how-to-make-completely-transparent-navigation-bar-in-ios-7