Iphone 点击图片时图像选择器未关闭
点击条形按钮项目时，弹出视图显示良好，但在选择照片时不会关闭。我错过什么了吗？我该怎么办Iphone 点击图片时图像选择器未关闭,iphone,objective-c,ipad,Iphone,Objective C,Ipad,点击条形按钮项目时，弹出视图显示良好，但在选择照片时不会关闭。我错过什么了吗？我该怎么办 -(IBAction)addPhoto:(UIBarButtonItem *)sender { UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init]; popover = [[UIPopoverController alloc] initWithContentViewController:i
-(IBAction)addPhoto:(UIBarButtonItem *)sender
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
popover = [[UIPopoverController alloc] initWithContentViewController:imagePicker];
[popover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)selectedImage editingInfo:(NSDictionary *)editingInfo
{
// Delete any existing image.
NSManagedObject *oldImage = imageClass.image;
if (oldImage != nil)
{
[imageClass.managedObjectContext deleteObject:oldImage];
}
// Create an image object for the new image.
NSManagedObject *myImage = [NSEntityDescription insertNewObjectForEntityForName:@"Image" inManagedObjectContext:imageClass.managedObjectContext];
imageClass.image = myImage;
// Set the image for the image managed object.
[image setValue:selectedImage forKey:@"image"];
[popover dismissPopoverAnimated:YES];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[[picker parentViewController] dismissViewControllerAnimated:YES completion:nil];
}
问题是，您试图关闭图像选择器控制器，但需要关闭它所在的popover。事情需要根据其呈现方式来处理 更改：
[self dismissViewControllerAnimated:YES completion:nil];
如果调用了
presentViewController:animated:completion:dismissviewcontroller:animated:completion:[self dismissViewControllerAnimated:YES completion:nil];
调用
dismissViewControllerAnimated:completion:presentViewController:animated:completion:图像采集器的委托
设置为self。另外，您需要将popover
作为实例变量，以便在委派方法中排除。您尚未将imagePicker
的delegate
设置为self。另外，您需要将popover
作为实例变量，以便在委托方法中排除。1）。h您必须添加
2） 添加imagePicker.delegate=self
因此您的addPhoto
方法应如下所示：
-(IBAction)addPhoto:(UIBarButtonItem *)sender {
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate=self; //add this line to your code
popover = [[UIPopoverController alloc]
initWithContentViewController:imagePicker];
[popover presentPopoverFromBarButtonItem:sender
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
}
1） 在you.h中，必须添加
2） 添加imagePicker.delegate=self
因此您的addPhoto
方法应如下所示：
-(IBAction)addPhoto:(UIBarButtonItem *)sender {
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate=self; //add this line to your code
popover = [[UIPopoverController alloc]
initWithContentViewController:imagePicker];
[popover presentPopoverFromBarButtonItem:sender
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
}
只需在.h
文件中给代理UIPopoverControllerDelegate
和UIImagePickerControllerDelegate
.hUIPopoverControllerDelegateUIImagePickerControllerDelegatedidFinishPickingMediaWithInfo- (void)imagePickerController:(UIImagePickerController *)imagePicker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[popover dismissPopoverAnimated:YES];
[imagePicker dismissModalViewControllerAnimated:YES];
}
要在从“多媒体资料”中选择照片时关闭UIPopoverViewController，您需要在拾取图像后在
didFinishPickingMediaWithInfo- (void)imagePickerController:(UIImagePickerController *)imagePicker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[popover dismissPopoverAnimated:YES];
[imagePicker dismissModalViewControllerAnimated:YES];
}
您必须将UIImagePickerControllerDelegate添加到相应的.h文件中，并检查此代码
-(IBAction)addPhoto:(UIBarButtonItem *)sender
{
UIImagePickerController *imagePicker3 = [[UIImagePickerController alloc] init];
imagePicker3.delegate = self;
imagePicker3.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker3.allowsEditing = YES;
imagePicker3.mediaTypes = [NSArray arrayWithObject:@"public.image"]
[self presentModalViewController:imagePicker3 animated:YES];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[self dismissModalViewControllerAnimated:YES];
_imageselected.image=[info valueForKey:UIImagePickerControllerEditedImage];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[self dismissModalViewControllerAnimated:YES];
}
您必须将UIImagePickerControllerDelegate添加到相应的.h文件中，并检查此代码
-(IBAction)addPhoto:(UIBarButtonItem *)sender
{
UIImagePickerController *imagePicker3 = [[UIImagePickerController alloc] init];
imagePicker3.delegate = self;
imagePicker3.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker3.allowsEditing = YES;
imagePicker3.mediaTypes = [NSArray arrayWithObject:@"public.image"]
[self presentModalViewController:imagePicker3 animated:YES];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[self dismissModalViewControllerAnimated:YES];
_imageselected.image=[info valueForKey:UIImagePickerControllerEditedImage];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[self dismissModalViewControllerAnimated:YES];
}
如果有人在使用UIImagePickerController时仍遇到此臭名昭著的错误：
Assigning to 'id <UINavigationControllerDelegate,UIImagePickerControllerDelegate>' from incompatible type 'DetailViewController *const __strong'
- (void)viewDidLoad{
//do your stuff
}
这解决了我的问题，希望能帮助别人。不知道这是否是最好的解决方案，但在类似的情况下对我有效。如果有人在使用UIImagePickerController时仍遇到此臭名昭著的错误：
Assigning to 'id <UINavigationControllerDelegate,UIImagePickerControllerDelegate>' from incompatible type 'DetailViewController *const __strong'
- (void)viewDidLoad{
//do your stuff
}
这解决了我的问题，希望能帮助别人。不知道这是否是最好的解决方案，但在类似的情况下对我有效。没有效果如何？那件府绸还在视线中还是别的什么？验证当到达图像选取器委托方法时，
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