小编Jos*_*800的帖子

你如何在objetive-c中按照你的手指制作图像？

我正在制作一个通用的应用程序,它在iPhone上运行良好!但是在iPad上,它无法拉动图像选择器.代码是:

- (IBAction)openImagePicker:(id)sender //Makes UIImagePicker roll up from the bottom.
{
    UIActionSheet *alertSheet = [[UIActionSheet alloc] initWithTitle:@"Where do you want to get your daily image?" delegate:(self) cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Camera", @"Library", nil];
    [alertSheet setTag:0];
    [alertSheet setDelegate:self];
    [alertSheet showFromTabBar:[[self tabBarController] tabBar]];
    [alertSheet release];
}

它说的原因是" *由于未捕获的异常'终止应用'NSInvalidArgumentException',原因:'在iPad上,UIImagePickerController必须通过UIPopoverController呈现'"我该怎么做？谢谢您的帮助.