将图像从一个视图传递到另一个 iOS

Question

我的应用中有 2 个UIViewControllers。

1. 在 1st viewController 中，我在工具栏中有一个 UIButton。
2. 当我点击按钮时，它会显示一个UIActionSheet 来选择是从相机还是从图库中拍照。
3. 当我选择，例如从图库中拍照并选择一张图片时，它会在第一个viewController中显示图片。

我想要的是从画廊照片或相机中拍照并转到2nd viewController 并在2nd viewController 中显示图像.

我搜索了很多代码并尝试了很多代码，但它不起作用。

这里是ViewController.m的代码

- (IBAction)PictureButton:(UIButton *)sender {   
    NSLog(@"Click button take picture in toolbar view 1");

    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Photo" 
                                                             delegate:self
                                                    cancelButtonTitle:@"Cancel"
                                               destructiveButtonTitle:nil
                                                    otherButtonTitles:@"Picture From Camera", @"Picture From Gallery", nil];
    [actionSheet setTag:1001];
    [actionSheet showInView:self.view];
 }

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
    switch (buttonIndex)
    {
        case 0: {
            // Take a picture from camera
            UIImagePickerController * picker = [[UIImagePickerController alloc] init];
            picker.delegate = self;
            picker.sourceType = UIImagePickerControllerSourceTypeCamera;
            [self presentModalViewController:picker animated:YES];
        }
        break;
        case 1: {
            // take a picture from gallery photos

            UIImagePickerController * picker = [[UIImagePickerController alloc] init];
            picker.delegate = self;
            picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
            [self.view addSubview:toolbar];
            [self presentModalViewController:picker animated:YES];
        }
        break;
 }

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [picker dismissModalViewControllerAnimated:YES];
    imageView.image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
 }

---

在我的第二个视图中，我创建了一个UIImageView 这是我在SecondViewController.h 中的代码

@interface SecondViewController : UIViewController
@property (weak, nonatomic) IBOutlet UIImageView *imageButton;
@end

你能帮帮我吗。
对不起我的英语不好，谢谢

Answer 1

您似乎想在FirstViewController 选择图像并将其显示在SecondViewContoller。但是，您没有做任何事情来切换到SecondViewController 并将您选择的图像传递给ViewController.m。

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [picker dismissModalViewControllerAnimated:YES];

    UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
    SecondViewController *secondViewController = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
    secondViewController.imageButton.image = image;
    [self.navigationController pushViewController:secondViewController animated:YES];
 }