iphone - 如何保存拍摄的照片

Question

我想保存我在应用程序中拍摄的照片。我想保存图片，这样即使我关闭应用程序，图片仍会保存。这是我到目前为止编写的代码

-(IBAction)TakePhoto {
    picker = [[UIImagePickerController alloc]init];
    picker.delegate = self;
    [picker setSourceType:UIImagePickerControllerSourceTypeCamera];
    [self presentViewController:picker animated:YES completion:nil];
}

- (IBAction)ChooseExisting {
    picker2 = [[UIImagePickerController alloc]init];
    picker2.delegate = self;
    [picker2 setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
    [self presentViewController:picker2 animated:YES completion:nil];
}

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    image = [info objectForKey:UIImagePickerControllerOriginalImage];
    [imageview setImage:image];
    [self dismissViewControllerAnimated:YES completion:nil];

}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    [self dismissViewControllerAnimated:YES completion:NULL];
}

我应该如何让应用程序保存我拍摄的照片并显示它。

Answer 1

NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString * basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;

UIImage * imageToSave = [UIImage imageNamed:@"Icon.png"];
NSData * binaryImageData = UIImagePNGRepresentation(imageToSave);

[binaryImageData writeToFile:[basePath stringByAppendingPathComponent:@"myfile.png"] atomically:YES];

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您可能需要编辑带有 imageToSave 变量的行，并将其更改为从相机获取的 UIImage 变量。