相机未在 iPad 物镜 c 中打开

Question

我可以使用相机和照片库在 iPhone 上选择图片。但是，同样的事情在 iPad 上不起作用。阅读了几个教程，但我不确定出了什么问题。

@property (nonatomic, strong) UIPopoverController *popOver;

-(void)captureImage:(NSInteger)sourceType{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
        [self cameraUsingiPad];
        return;
    }
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.sourceType = sourceType;
    picker.allowsEditing = YES;
    [self presentViewController:picker animated:YES completion:nil];

}else{
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Camera Unavailable" message:@"Unable to find a camera on your device." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
    [alert show];
    alert = nil;
}

}

-(void) cameraUsingiPad {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.allowsEditing = NO;
self.popOver = [[UIPopoverController alloc] initWithContentViewController:picker];
[self.popOver presentPopoverFromRect:self.view.bounds inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}

Answer 1

在 iOS 10 和 11 中，用户必须允许使用相机。 所以，你应该在 info.plist 中添加描述。

Answer 2

问题在于权限。解决了这个问题。