如何从 UIImagePicker 获取图像的副本
我有一个非常简单的应用程序，用户选择 UIImageView 并按下按钮用相机拍照。然后图像被返回并显示在 UIImageView 中。
但是，由于 UIImageViews 共享同一个委托，因此当其中一个 UIImageViews 中已经有一张图像时，我去拍摄一张照片并将其放置在另一个中，之前的 UIImageView 被替换为空内容（即没有图像）。我想这是因为他们共享同一个代表。有什么方法可以基本上复制图像而不是引用它的委托版本吗？
这是一些示例代码：
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {
[picker.parentViewController dismissModalViewControllerAnimated:YES];
if (topView == YES)
{
NSLog(@"topView = %i", topView);
imageView.image = image;
}
else {
NSLog(@"topView = %i", topView);
imageView2.image = image;
}
}
谢谢！
编辑：这是按下按钮时 IBAction 调用的代码
- (IBAction) pushPick {
topView = YES;
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentModalViewController:picker animated:YES];
[picker release];
}
- (IBAction) pushPick2 {
topView = NO;
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentModalViewController:picker animated:YES];
[picker release];
}
I've got a very simple app where the user selects a UIImageView and presses a button to take a photo with the camera. The image is then returned and displayed in the UIImageView.
However, since the UIImageViews are sharing the same delegate, when there's already an image in one of the UIImageViews, and I go to take a photo to be placed in another, the previous UIImageView is replaced with empty content (i.e. no image). I guess this is because they're sharing the same delegate. Is there any way I can essentially copy the image instead of referencing the delegate version of it?
Here's some sample code:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {
[picker.parentViewController dismissModalViewControllerAnimated:YES];
if (topView == YES)
{
NSLog(@"topView = %i", topView);
imageView.image = image;
}
else {
NSLog(@"topView = %i", topView);
imageView2.image = image;
}
}
Thanks!
Edit: Here's the code that gets called by the IBAction on the button presses
- (IBAction) pushPick {
topView = YES;
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentModalViewController:picker animated:YES];
[picker release];
}
- (IBAction) pushPick2 {
topView = NO;
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentModalViewController:picker animated:YES];
[picker release];
}
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像这样的东西：
Something like this:
使用
但请记住，您需要在 dealloc 时释放该对象
use
But remember that you will need to release the object on dealloc