Question

我想保存2张图片，因为它们被选中以分隔名称。

我使用本指南制作了我的uiimagepickercontroller：guide

基本上它是一个管理2个uiimageviews的uiimagepickercontroller，是否可以使用不同的名称保存2个不同的图像？或者我应该尝试使uiimagepickercontroller与众不同？

这是我的代码，它不适用于保存。

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

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"latest_photo.png"];

//extracting image from the picker and saving it
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:@"public.image"]){
    UIImage *editedImage = [info objectForKey:UIImagePickerControllerEditedImage];
    NSData *webData = UIImagePNGRepresentation(editedImage);
    [webData writeToFile:imagePath atomically:YES];
}
switch (_selectedPhotoType) {
    case imageView1Type:
        imageView1.image = [info objectForKey:UIImagePickerControllerOriginalImage];
        break;
    case imageView2Type:
        imageView2.image = [info objectForKey:UIImagePickerControllerOriginalImage];
        break;
    default:
        break;
}

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

Answer 1

看看这个实现。你需要的吗？

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

        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentsDirectory = [paths objectAtIndex:0];
        NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"latest_photo.png"];

        //extracting image from the picker and saving it
        NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
        UIImage *editedImage = [info objectForKey:UIImagePickerControllerEditedImage];
        NSData *webData = UIImagePNGRepresentation(editedImage);
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentsDirectory = [paths objectAtIndex:0];
        switch (_selectedPhotoType) {
            case imageView1Type: {
                NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"latest_photo1.png"];
                imageView1.image = [info objectForKey:UIImagePickerControllerOriginalImage];
        }
                break;
            case imageView2Type: {
                NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"latest_photo2.png"];
                imageView2.image = [info objectForKey:UIImagePickerControllerOriginalImage];
        }
                break;
            default:
                break;
        }
        [webData writeToFile:imagePath atomically:YES];

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

Answer 2

在@Heximal

的帮助下弄明白了

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

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"latest_photo.png"];

//extracting image from the picker and saving it
    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
switch (_selectedPhotoType) {
    case imageView1Type: {
        NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"latest_photo1.png"];
        imageView1.image = [info objectForKey:UIImagePickerControllerEditedImage];
        if ([mediaType isEqualToString:@"public.image"]){
            UIImage *editedImage = [info objectForKey:UIImagePickerControllerEditedImage];
            NSData *webData = UIImagePNGRepresentation(editedImage);
            [webData writeToFile:imagePath atomically:YES];
        }

    }
        break;
    case imageView2Type: {
        NSString *imagePath = [documentsDirectory stringByAppendingPathComponent:@"latest_photo2.png"];
        imageView2.image = [info objectForKey:UIImagePickerControllerEditedImage];
        if ([mediaType isEqualToString:@"public.image"]){
            UIImage *editedImage = [info objectForKey:UIImagePickerControllerEditedImage];
            NSData *webData = UIImagePNGRepresentation(editedImage);
            [webData writeToFile:imagePath atomically:YES];
        }
    }
        break;
    default:
        break;
}

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

UIImagePickerController，将2个图像保存到具有不同名称的documentsdir

2 个答案: