ios - UIImagePickerController照片快门无法打开

Question

我正在开发仅支持横向的iPad应用

我想做的是，我想在单击按钮时打开照片库。
这是我的代码段，

UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
picker.modalPresentationStyle = UIModalPresentationCurrentContext;

当我写这篇文章时，它不会打开照片库:(
我不知道我在哪里做错

，请提供帮助并感谢。

Answer 1

试试这个:

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

if([[[UIDevice currentDevice] systemVersion] floatValue]>=8.0)
{
    [[NSOperationQueue mainQueue] addOperationWithBlock:^{
        [self presentViewController:picker animated:NO completion:nil];
    }];
}else{
    [self presentViewController:picker animated:YES completion:nil];
}