Ios 将图像从相机保存到文档目录

我有以下启动摄像头应用程序的代码，用户可以选择使用照片。然而什么也没发生

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] == YES) {
        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc]init];
        imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;

        [self presentModalViewController:imagePickerController animated:YES];
    } 

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如何从中获取UIimage并将其保存到相册中。理想情况下，我希望将其保存到documents目录，并知道如何完成该部分。谢谢

我想这会对你有帮助

 //you have to set the delegate which clicking the button of camera

 imagePickerController.delegate = self;


//This Delegate method will call

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

    [picker dismissViewControllerAnimated:YES completion:nil];
    UIImage* selectedImage =  [info objectForKey:UIImagePickerControllerOriginalImage];

   NSString *path = [[self pathToPatientPhotoFolder] stringByAppendingPathComponent:[NSString stringWithFormat:@"imageName.png"]];

   NSError * error11 = nil;

   [post.getData writeToFile:path options:NSDataWritingAtomic error:&error11];

}



//This method is useful for the get the Documentry path

    - (NSString *)pathToPatientPhotoFolder {
        NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                                            NSUserDomainMask,
                                                                            YES) lastObject];
        NSString *myalbumpath = [documentsDirectory stringByAppendingPathComponent:@"MYAlbum"];

        // Create the folder if necessary
        BOOL isDir = NO;
        NSFileManager *fileManager = [[NSFileManager alloc] init];
        if (![fileManager fileExistsAtPath:myalbumpath
                               isDirectory:&isDir] && isDir == NO) {
            [fileManager createDirectoryAtPath:myalbumpath
                   withIntermediateDirectories:NO
                                    attributes:nil
                                         error:nil];
        }
        return myalbumpath;
    }

享受编码的乐趣使用以下代码：

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

    UIImage  *image =  [info objectForKey:UIImagePickerControllerOriginalImage];
    NSData * imageData = UIImagePNGRepresentation(image);

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"savedImage.png"];
    [imageData writeToFile:savedImagePath atomically:NO];

    [picker dismissViewControllerAnimated:YES completion:nil];
}

---

addImageOutlet针对什么类型的对象

相机弹出窗口不再显示。我使用了NSDictionary*dict=[[NSDictionary alloc]init]；UIImagePickerController*pict=[[UIImagePickerController alloc]init]；[自成像选择器控制器：pict didFinishPickingMediaWithInfo:dict]；调用你提供的方法，并用你的字典名替换信息。我使用未声明的标识符进行评论和发布。你从哪里获得未声明的标识符。你能告诉meI答案已编辑。现在你不会面临问题，请检查答案，againI必须添加UINavigationControllerDelegate才能进入界面使其工作。谢谢你能告诉m plz addImageOutlet什么类型的对象

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

 UIImage* originalImage = nil;
    originalImage = [info objectForKey:UIImagePickerControllerEditedImage];
    if(originalImage==nil)
    {
        originalImage = [info objectForKey:UIImagePickerControllerOriginalImage];
    }
    if(originalImage==nil)
    {
        originalImage = [info objectForKey:UIImagePickerControllerCropRect];
    }



    [addImageOutlet setImage:originalImage forState:UIControlStateNormal];
       [self saveBackgroundImageInDocumentDirectory:originalImage];


    [self dismissViewControllerAnimated:YES completion:nil];

}