objective-c - 访问照片库时的 Xcode SIGABRT

Question

我一直试图让我的应用程序从照片库中选择一张照片然后显示它，它在不同的项目中运行良好，但在这个应用程序中运行正常但是当我按下应该的 UIButton 时调出画廊，我在 int retVal = UIApplicationMain(argc, argv, nil, nil); 上的 main.m 中收到错误 SIGABRT;

正如我所说，这在过去工作得很好，所以我不知道为什么现在不行，这里是与错误相关的代码部分，我只是发布它，因为我有很多代码，这样更容易。

ViewController.h

#import <UIKit/UKit.h>

@interface ViewController : UIViewController
<UIImagePickerControllerDelegate, UINavigationControllerDelegate>
{
    //Blah blah blah
}

//Blah blah blah
-(IBAction) selectExistingpicture;
@property (nonatomic, retain) IBOutlet UIImageView *theImageView;

//Blah blah blah

@end

ViewController.m

#import "ViewController.h"

@implementation ViewController

@synthesize theImageView;

-(IBAction) selectExistingPicture
{
    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
    {
        UIImagePickerController *picker = [[UIImagePickerController alloc] init];
        picker.delegate = self;
        picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
        [self presentModalViewController:picker animated:YES];
        [picker release];
    }
}

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage : (UIImage *)image editingInfo:(NSDictionary *)editingInfo
{
    theImageView.image = image;
    [picker dismissModalViewControllerAnimated:YES];
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)  picker
{
    [picker dismissModalViewControllerAnimated:YES];
}

我已将 selectExistingPicture 链接到 UIButton，但我不知道是什么导致该按钮导致我出错。

非常感谢任何帮助。

Answer 1

这是我使用相机胶卷的方式

    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {

    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

    imagePickerController.mediaTypes = [NSArray arrayWithObjects:(NSString *) kUTTypeImage, (NSString *) kUTTypeMovie,
                                        nil];

    imagePickerController.delegate = self;

    [self presentModalViewController:imagePickerController animated:YES];


}

else {
    NSLog(@"Error");

}

我认为你的问题是

        picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;

应该是

        picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

还有你好像不见了

imagePickerController.mediaTypes = [NSArray arrayWithObjects:(NSString *) kUTTypeImage, (NSString *) kUTTypeMovie,
                                    nil];

看看我是如何设置的