iOS,PopOverPresentationController 问题,.xib
iOS, PopOverPresentationController issue, .xib
我有一个 NavigationController,另一个控制器被压入其堆栈:BNRDetailsViewController。现在,在 BNRDetailsViewController 中,我试图在按下工具栏按钮时显示弹出窗口 window,这会向我显示 UIImagePickerController(仅在 iPad 设备上)。因此,我尝试关注以下 Whosebug 线程:
UIPopoverPresentationController on iOS 8 iPhone
但是没有成功。如果我只是使用他们的代码,我会收到一条错误消息,即 pushing navigationController is not supported
。如果我尝试像这样推送新创建的 UIPopoverPresentationController
:[self.navigationController pushViewController:self.imagePickerPopover animated:YES];
它会崩溃,因为 UIPopoverPresentationController
不是 UIViewController
类型,所以,我想,我不能只是推送它在堆栈上。
在这种特殊情况下,您建议做什么?
这是我现在拥有的代码,在按下工具栏按钮时触发:
- (IBAction)takePicture:(id)sender {
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
// If the device have camera, take a picture, otherwise,
// just pick from photo library
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
} else {
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
imagePicker.delegate = self;
// Place image picker on the screen
//[self presentViewController:imagePicker animated:YES completion:NULL];
// Place image picker on the screen
// Check for iPad device before instantiating the popover controller
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
// Create a new popover controller that will display the imagePicker
_imagePickerPopover = [[UIPopoverPresentationController alloc] initWithPresentedViewController:imagePicker presentingViewController:self];
imagePicker.preferredContentSize = CGSizeMake(280, 200);
_imagePickerPopover.delegate = self;
_imagePickerPopover.sourceView = self.view;
CGRect frame = [[sender valueForKey:@"view"] frame];
frame.origin.y = frame.origin.y + 20;
_imagePickerPopover.sourceRect = frame;
// [self.navigationController pushViewController:self.imagePickerPopover animated:YES];
}
}
这是基于您的代码的代码,它将使弹出框显示在 iPad。
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
imagePicker.modalPresentationStyle = UIModalPresentationPopover;
imagePicker.preferredContentSize = CGSizeMake(280, 200);
CGRect frame = [[sender valueForKey:@"view"] frame];
frame.origin.y = frame.origin.y + 20;
UIPopoverPresentationController *popoverController =
imagePicker.popoverPresentationController;
popoverController.sourceView = self.view;
popoverController.sourceRect = frame;
[self.navigationController presentViewController:imagePicker
animated:YES completion:nil];
}
我有一个 NavigationController,另一个控制器被压入其堆栈:BNRDetailsViewController。现在,在 BNRDetailsViewController 中,我试图在按下工具栏按钮时显示弹出窗口 window,这会向我显示 UIImagePickerController(仅在 iPad 设备上)。因此,我尝试关注以下 Whosebug 线程:
UIPopoverPresentationController on iOS 8 iPhone
但是没有成功。如果我只是使用他们的代码,我会收到一条错误消息,即 pushing navigationController is not supported
。如果我尝试像这样推送新创建的 UIPopoverPresentationController
:[self.navigationController pushViewController:self.imagePickerPopover animated:YES];
它会崩溃,因为 UIPopoverPresentationController
不是 UIViewController
类型,所以,我想,我不能只是推送它在堆栈上。
在这种特殊情况下,您建议做什么?
这是我现在拥有的代码,在按下工具栏按钮时触发:
- (IBAction)takePicture:(id)sender {
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
// If the device have camera, take a picture, otherwise,
// just pick from photo library
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
} else {
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
imagePicker.delegate = self;
// Place image picker on the screen
//[self presentViewController:imagePicker animated:YES completion:NULL];
// Place image picker on the screen
// Check for iPad device before instantiating the popover controller
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
// Create a new popover controller that will display the imagePicker
_imagePickerPopover = [[UIPopoverPresentationController alloc] initWithPresentedViewController:imagePicker presentingViewController:self];
imagePicker.preferredContentSize = CGSizeMake(280, 200);
_imagePickerPopover.delegate = self;
_imagePickerPopover.sourceView = self.view;
CGRect frame = [[sender valueForKey:@"view"] frame];
frame.origin.y = frame.origin.y + 20;
_imagePickerPopover.sourceRect = frame;
// [self.navigationController pushViewController:self.imagePickerPopover animated:YES];
}
}
这是基于您的代码的代码,它将使弹出框显示在 iPad。
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
imagePicker.modalPresentationStyle = UIModalPresentationPopover;
imagePicker.preferredContentSize = CGSizeMake(280, 200);
CGRect frame = [[sender valueForKey:@"view"] frame];
frame.origin.y = frame.origin.y + 20;
UIPopoverPresentationController *popoverController =
imagePicker.popoverPresentationController;
popoverController.sourceView = self.view;
popoverController.sourceRect = frame;
[self.navigationController presentViewController:imagePicker
animated:YES completion:nil];
}