在UIImagePickerController取消按钮不显示？

Question

这里我使用下面的代码。如果有人知道这个问题，请帮助我。 我也试过下面的网址，但它不起作用。请帮帮我

iOS7 UIImagePickerController cancel button disappear UIImagePickerController inside UIPopoverController doesn't show Cancel button on iOS7

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
picker.navigationBar.tintColor = [UIColor redColor];
picker.navigationBar.barStyle = UIBarStyleBlackOpaque;
picker.navigationBar.topItem.rightBarButtonItem.tintColor = [UIColor blackColor];

我的问题：

我的需求：

Answer 1

这对我有用：

    present(imagePicker, animated: true, completion: {
        imagePicker.navigationBar.topItem?.rightBarButtonItem?.tintColor = .black
    })

Answer 2

如果每次努力都不起作用，那么你必须使用appearance（）方法。因此，尝试在要呈现的任何视图控制器（UIImagePickerController）中编写以下行。您可以在任何类中使用外观，但您可能已将UIBarButtonItem.appearance（）用于其他目的，因此请在viewDidDisappear（）中找到并编写该代码。

var gm = require('../')
  , dir = __dirname + '/imgs'

gm(dir + "/original.jpg")
  .crop(140,100)
  .background("#FF0000")
  .extent(340,300)
  .write(dir + '/background.jpg', function (err) {
    if (err) return console.dir(arguments)
    console.log(this.outname + " created  ::  " + arguments[3])
});

Answer 3

我认为你没有将viewController嵌入到导航控制器

请这样做并尝试代码:(目标 - c）

-(void)viewDidLoad
{
    [super viewDidLoad];

    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    imagePickerController.delegate = self;
    [self presentViewController:imagePickerController animated:YES completion:nil];  
}    

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
    {
        UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];
        [picker dismissViewControllerAnimated:YES completion:^{
        }];

    UIImageView *imageview=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 100, 300)];
    imageview.image=image;
}

Answer 4

我使用了您发布的相同代码。它显示“取消”按钮。

 UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentViewController:picker animated:YES completion:NULL];
    picker.navigationBar.tintColor = [UIColor redColor];
    picker.navigationBar.barStyle = UIBarStyleBlackOpaque;
    picker.navigationBar.topItem.rightBarButtonItem.tintColor = [UIColor blackColor];
    [self presentViewController:picker animated:YES completion:NULL];

可能您正在使用任何自定义导航栏，并且您将app delegate的属性设置为更改导航文件的色调。

Answer 5

好像更新某些项目属性可以使按钮可见，所以...只需将其启用即可：

present(imagePicker, animated: true, completion: {
    self.imagePicker.navigationBar.topItem?.rightBarButtonItem?.isEnabled = true
})

Answer 6

如果以上任何一项都不适合您， 定义UIImagePickerController

时尝试添加此内容

    imagePicker.modalPresentationStyle = .popover // Or.fullScreen (Can also check cases for iPad and iPhone as per requirement)

像魅力一样为我工作。被这个烦恼了

Answer 7

UIPickerViewController的子类如下：

class CustomImagePicker: UIImagePickerController {

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        UINavigationBar.appearance().tintColor = UIColor.black
        UIBarButtonItem.appearance().setTitleTextAttributes([NSAttributedString.Key.foregroundColor : UIColor.init(red: 0.0, green: 122.0/255.0, blue: 1.0, alpha: 1.0)], for: .normal)
    }

    override func viewWillDisappear(_ animated: Bool) {

        UINavigationBar.appearance().tintColor = UIColor.white // your color
        UIBarButtonItem.appearance().setTitleTextAttributes(nil, for: .normal)
        super.viewWillDisappear(animated)

    }

}

并使用As：

func openGallary()
    {
        picker!.sourceType = UIImagePickerController.SourceType.photoLibrary
        picker!.modalPresentationStyle = .currentContext
        self.present(picker!, animated: true, completion: nil)
    }

Answer 8

更改UIImagePickerController navigationBar.tintColor 试试这段代码：

UINavigationBar *bar = [self.navigationController navigationBar];
    [bar setTintColor:[UIColor blueColor]];

Answer 9

UIImagePickerController *imgPicker=[[UIImagePickerController alloc]init];    
imgPicker.delegate = self;
imgPicker.navigationBar.barStyle = UIBarStyleBlackOpaque;
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imgPicker.allowsEditing = NO;

if([UIImagePickerController isSourceTypeAvailable: sourceType])
{
    imgPicker.sourceType=sourceType;
    [self presentViewController:imgPicker animated:YES completion:NULL];
}

Answer 10

这对我有用：

let BarButtonItemAppearance = UIBarButtonItem.appearance()

BarButtonItemAppearance.setTitleTextAttributes([NSForegroundColorAttributeName: .blue), NSFontAttributeName: UIFont.boldSystemFont(ofSize: 16.0)], for: .normal)

Answer 11

  

Swift 4.2解决方案，将以下代码添加到AppDelegate的didFinishLaunchingWithOptions

UINavigationBar.appearance(whenContainedInInstancesOf: [UIImagePickerController.self]).tintColor = .black

Answer 12

我也遇到过同样的问题，在浪费大量时间后，我找到了解决方案。我已自定义导航栏外观（如以下代码所示），以说明发生此问题的原因。

    UINavigationBar.appearance().backIndicatorImage = UIImage(named: "ic_left")
    let attributes = [NSAttributedString.Key.font: UIFont(name: "FuturaPT-Medium", size: 16)!]
    UINavigationBar.appearance().titleTextAttributes = attributes
    UINavigationBar.appearance().setBackgroundImage(UIImage(named: "line.png"),for: .bottom,barMetrics: .default)
    UINavigationBar.appearance().shadowImage = UIImage(named: "line.png")

  

UIBarButtonItem.appearance（）。setTitleTextAttributes（[[NSAttributedString.Key.foregroundColor：   UIColor.clear]，用于：.normal）

这只是导航栏的自定义外观，我们只需要更改最后一行代码，因为我将标题颜色设置为清除。这真的很简单。在展示您的图像选择器控制器之前，请放置此代码。

  

UIBarButtonItem.appearance（）。setTitleTextAttributes（[[NSAttributedString.Key.foregroundColor：   UIColor.black]，用于：.normal）

再次，如果您不想导航栏按钮标题，请清除文本颜色。 谢谢

Answer 13

请尝试使用此代码，以获取3或更高版本

let picker = UIImagePickerController()

picker.navigationBar.topItem?.rightBarButtonItem?.tintColor = UIColor.white

Answer 14

试用此代码：

UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePickerController.delegate = self;
[self presentViewController:imagePickerController animated:YES completion:nil];

并添加委托方法：- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
  UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];
  [picker dismissViewControllerAnimated:YES completion:^{
  }];

  self.img = image;
  [self.iconBtn setBackgroundImage:image forState:UIControlStateNormal];
}

Answer 15

我认为这将对您有所帮助。只需将代码粘贴到imagePickerControllerDidCancel中，然后将其关闭（快速键4）。

picker.setNavigationBarHidden(false, animated: true)