iPad上的UIImagePicker中的黑条 - 仅在横向右方位

Question

我通过UIPopOver显示UIImagePicker（本身在UIView中）。这很好用，但是当iPad旋转到右侧时，我会在弹出框的左侧看到一个奇怪的黑条，如下图所示。取消按钮也部分偏离屏幕右侧。在任何其他奇怪的方向都不会发生这种情况。

下面还列出了代码。任何人都可以建议我为什么会得到这个黑条？

imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.delegate = self;
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

CGFloat width = CGRectGetWidth(self.view.bounds);
CGFloat height = CGRectGetHeight(self.view.bounds);

UIViewController *containerController = [[UIViewController alloc] init];
containerController.contentSizeForViewInPopover = CGSizeMake(width, height);
[imagePickerController.view setFrame:containerController.view.frame];
[containerController.view addSubview:imagePickerController.view];



if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
    Class cls = NSClassFromString(@"UIPopoverController");
    if (cls != nil) {

        popoverController = [[UIPopoverController alloc] initWithContentViewController:containerController];

        [popoverController presentPopoverFromRect:selectedRect inView:self.view permittedArrowDirections:4 animated:YES];

        [containerController release];

    }

Answer 1

由于一些奇怪的原因，视图的框架确实在横向上发生了变化。

要完成此操作，请在之后设置框架，以显示弹出窗口（下面的视图代码）。

这应该可以解决问题。

imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.delegate = self;
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

CGFloat width = CGRectGetWidth(self.view.bounds);
CGFloat height = CGRectGetHeight(self.view.bounds);

UIViewController *containerController = [[UIViewController alloc] init];
containerController.contentSizeForViewInPopover = CGSizeMake(width, height);

[containerController.view addSubview:imagePickerController.view];



if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
    Class cls = NSClassFromString(@"UIPopoverController");
    if (cls != nil) {

        popoverController = [[UIPopoverController alloc] initWithContentViewController:containerController];

        [popoverController presentPopoverFromRect:selectedRect inView:self.view permittedArrowDirections:4 animated:YES];

        [imagePickerController.view setFrame:containerController.view.frame];

        [containerController release];

    }

此外，在您的控制器中，添加此项以在旋转发生时重置帧：

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {

    [imagePickerController.view setFrame:imagePickerController.view.superview.frame];
}

Answer 2

上述方法适用于iOS 5及更高版本，但在iOS 4和之前，它无法将UIImagePickerController添加为子视图然后显示它。它总是必须呈现为ModalViewController。

Answer 3

试试这个。重新发布我使用[currentDevice endGeneratingDeviceOrientationNotifications]找到的一个解决方案

UIImagePickerController *picker = [[[UIImagePickerController alloc] init] autorelease]; 
picker.sourceType = UIImagePickerControllerSourceTypeCamera;  
picker.delegate = self;

// Display the camera.
[self presentModalViewController:picker animated:YES];

// Given by default your orientation is in landscape right already
while ([currentDevice isGeneratingDeviceOrientationNotifications])
   [currentDevice endGeneratingDeviceOrientationNotifications];

来源：Disable rotation in UIImagePicker