AttributeSelectionViewController *vc=[[AttributeSelectionViewController alloc]init];
vc.modalPresentationStyle = UIModalPresentationOverFullScreen;
[self presentViewController:vc animated:YES completion:^{
vc.view.backgroundColor = [[UIColor clearColor] colorWithAlphaComponent:.5];
}];
屏幕快照 2017-05-02 下午2.24.32.png
