Ios UIImagePickerController和空白ImageView

我有一个非常奇怪的问题：我有一个TableViewController，它有两张图片和两个按钮。用户可以通过按钮更改图片

问题是当用户单击按钮时，UIActionSheet打开，用户从库中选择照片，然后在库中选择照片。UIActionSheet关闭，但我的ImageView中没有图片。。。它还是空白的。。。我的ImageView链接到@property

这是我的密码：

.H文件：

#import <UIKit/UIKit.h>

@interface EditUserTableViewController : UITableViewController <UITextFieldDelegate, UIActionSheetDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>

@property (weak, nonatomic) IBOutlet UIImageView *avatar;
@property (weak, nonatomic) IBOutlet UIImageView *coverPhoto;

- (IBAction)changeImage:(id)sender;

@end

.M文件：

#import "EditUserTableViewController.h"

typedef NS_ENUM(NSInteger, THPhotoType)
{
    THPhotoTypeCoverPhoto = 10,
    THPhotoTypeAvatarPhoto = 20
};

@interface EditUserTableViewController ()

@property (nonatomic, assign) THPhotoType selectedPhotoType;

@end

@implementation EditUserTableViewController

@synthesize coverPhoto, avatar;

- (id)initWithStyle:(UITableViewStyle)style
{
    self = [super initWithStyle:style];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];    
} 

- (IBAction)changeImage:(id)sender {
    if ([sender isKindOfClass:[UIButton class]]) {
        UIButton *button = sender;
        _selectedPhotoType = button.tag;
    }
    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"Select Picture" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"From Library", @"From Camera", nil];
    [sheet showInView:self.view];
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex < 2) {
        UIImagePickerController * imagePicker = [[UIImagePickerController alloc] init];
        UIImagePickerControllerSourceType type;

        switch (buttonIndex) {
            case 0:
                type = UIImagePickerControllerSourceTypePhotoLibrary;
                break;
            case 1:
                type = UIImagePickerControllerSourceTypeCamera;
                break;

            default:
                break;
        }

        imagePicker.sourceType = type;
        imagePicker.delegate = self;

        [self presentViewController:imagePicker animated:YES completion:^{ }];
    }
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    switch (_selectedPhotoType) {
        case THPhotoTypeCoverPhoto:
            coverPhoto.image = [info objectForKey:UIImagePickerControllerOriginalImage];
            break;
        case THPhotoTypeAvatarPhoto:
            avatar.image = [info objectForKey:UIImagePickerControllerOriginalImage];
            break;
        default:
            break;
    }

    [self dismissViewControllerAnimated:YES completion:^{ }];
}

@end

---

将图像设置为图像视图时出现问题。请尝试此操作

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    switch (_selectedPhotoType) {
        case THPhotoTypeCoverPhoto:
          self.coverPhoto.image = [info objectForKey:UIImagePickerControllerOriginalImage];
            break;
        case THPhotoTypeAvatarPhoto:
           self.avatar.image = [info objectForKey:UIImagePickerControllerOriginalImage];
            break;
        default:
            break;
    }

[self dismissViewControllerAnimated:YES completion:^{ }];

}好的，我是%^&*&^

这是我的按钮标签的问题

问题解决了