如何将图像从图像选择器传递到另一个视图

Question

似乎有点老了，但我无法解决这个问题....现在已经忙于这个很长一段时间了，我找不到一个可行的例子来解决这个问题，所以如果有人能提供帮助，我将不胜感激，我只是想使用图像选择器将图像从视图控制器传递到另一个视图，我有 2 个视图控制器：viewcontroller 和第二个视图，我将视图控制器 h 文件的代码放在这里：

#import <UIKit/UIKit.h>
@interface ViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate>
 {
UIImagePickerController *picker;
IBOutlet UIImageView *selectedImage;
SecondView *imageView;
}
@property (nonatomic, retain) UIImageView *selectedImage;
@property (nonatomic, retain) SecondView *secondView;
-(IBAction)sendImage:(id)sender;
-(IBAction)openGallery:(id)sender;
@end

这里是视图控制器的 m 文件：

 #import "ViewController.h"
 @interface ViewController ()
 @end
 @implementation ViewController
 @synthesize selectedImage;
 @synthesize secondView;
- (void)viewDidLoad
{
[super viewDidLoad];
 }

- (IBAction)secondView:(id)sender { if(self.secondView == nil)
{
    SecondView *secView = [[SecondView alloc] initWithNibName:@"SecondView" bundle:[NSBundle mainBundle]];
    self.secondView = secView;
    secView.theImage = selectedImage.image;
}
[self.navigationController pushViewController:secondView animated:YES];
}

 -(IBAction)sendImage:(id)sender
{
if(self.secondView == nil)
    {
        SecondView *secView = [[SecondView alloc] initWithNibName:@"SecondView" bundle:[NSBundle mainBundle]];
        self.secondView = secView;
        secView.theImage = selectedImage.image;
    }
    [self.navigationController pushViewController:secondView animated:YES];
}
objectForKey:UIImagePickerControllerOriginalImage];
-(IBAction)openGallery:(id)sender
{
  picker = [[UIImagePickerController alloc] init];
  picker.delegate = self;
  picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
  [self presentViewController:picker animated:YES completion:nil];
}

-(void)imagePickerControllerDidCancel:(UIImagePickerController *) Picker
{
[self dismissViewControllerAnimated:YES completion:nil];
[Picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerController:(UIImagePickerController *) Picker
    didFinishPickingMediaWithInfo:(NSDictionary *)info
{
selectedImage.image = [info objectForKey:UIImagePickerControllerOriginalImage];
[self.navigationController pushViewController:secondView animated:YES];
[Picker dismissViewControllerAnimated:YES completion:nil];
}
@end

这里是secondview的h文件:

#import <UIKit/UIKit.h>

@interface SecondView : UIViewController
{
UIImageView *imgView;
UIImage *theImage;
}

@property (nonatomic, retain) IBOutlet UIImageView *imgView;
@property (nonatomic, retain) UIImage *theImage;

-(void)setImage:(UIImage *)image;
@property (nonatomic, readwrite) IBOutlet UIImageView *imageView;

@end

这里是secondview的m文件:

#import "SecondView.h"

@interface SecondView ()

@end

@implementation SecondView : UIViewController

@synthesize imgView;
@synthesize theImage;

-(void)setImage:(UIImage *)image
{
[imgView setImage:image];

}
- (void)viewDidLoad
{
[super viewDidLoad];
[_imageView setImage:theImage];
}
- (void)loadView {
 self.title = @"Photo";
_imageView = [[UIImageView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame];
self.imageView.contentMode = UIViewContentModeScaleAspectFit;
self.imageView.backgroundColor = [UIColor blackColor];
self.view = self.imageView;
}

- (void)viewWillAppear:(BOOL)animated {
 [super viewWillAppear:animated];
 [_imageView setImage:theImage];
 }
 @end

我只是在第二次查看时一直出现空白屏幕....非常感谢任何帮助....提前致谢....

Answer 1

如果按钮在第二个 viewcontroller 上附加了 segue，请使用此代码。

-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
 {
SecondView *secView = segue.destinationViewController;
self.secondView = secView;
secView.theImage = selectedImage.image;
}

Answer 2

您可以在其他 view controller 上拍摄新的 UIImageView 并使用 prepareForSegue 方法传递此图像。

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
 if([segue.identifier isEqualToString:@"editphoto"])
 {
   YourNextViewController*editImageView=segue.destinationViewController;
   UIImage*clickedImage=capturedPicImageView.image;
  editImageView.passedImage=clickedImage;
 }
}

然后在 YourNextViewController 中创建 UIImage*clickedImage 并给它属性。 不要忘记在 viewDidLoad 中分配。希望这会有所帮助。

如何将图像从图像选择器传递到另一个视图

how to pass an image from image picker to another view

uiimagepickercontroller

ios