ImagePickerController应以横向模式打开

Question

UIImagePickerController应该在风景中打开吗？我尝试使用类别，但它无法正常工作。如何修改UIImagePickerController的方向？

Answer 1

您应该使用UIPopoverController以横向模式显示ImagePickerController

-(void)showImagePicker:(id)sender
    {
        UIButton *button = (UIButton *)sender; // button is on which user will tap to show image picker
        UIImagePickerController *imgPicker = [[UIImagePickerController alloc] init];
        imgPicker.delegate = self;
        imgPicker.allowsEditing = YES;
        imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

        self.popover = [[UIPopoverController alloc] initWithContentViewController:imgPicker];
        [self.popover presentPopoverFromRect:button.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    }

Answer 2

UIImagePickerController类仅支持纵向模式。此类旨在按原样使用，不支持子类化。

Answer 3

这很容易。尝试创建一个UIImagePickerController的自定义类。覆盖其中的supportedInterfaceOrientations方法：

- (NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskLandscape;
}

- (BOOL)shouldAutorotate{
    return YES;
}