UIImagePickerController 被导航栏挡住

1：

在AppDelegate.m设置了

if (@available(iOS 11.0, *)) {

        [[UIScrollView appearance] setContentInsetAdjustmentBehavior:UIScrollViewContentInsetAdjustmentNever];

}

2：

在打开相册前设置

if (@available(iOS 11, *)) {

        UIScrollView.appearance.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;

}

3：

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

和

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info

方法中设置

if (@available(iOS 11, *)) {

        UIScrollView.appearance.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;

}

以上三步设置完就正常了