问题
I have a problem with UIPickerView. I have 9 lists and I created a view with 9 buttons. For each button I have associated a flag: when I click a button, a picker appears with the list relating to selected tag.
The problem is that when the picker appears, it's in the background and the buttons are seen above the picker. I have solved in this way: when the user clicks a button the others are set as hidden and the picker looks good.
There is a better solution to have the picker in the foreground directly?
One can also change the color of the edges of pickerview and place a check box without using long code?
Thanks in advance!
回答1:
You can bring the picker view above using [self.view bringSubviewToFront:pickerview]; and it will bring the picker view above the buttons, or you can go in the .xib file or storyboard and make sure the picker view is the last item added in the view.
来源：https://stackoverflow.com/questions/17569592/uipickerview-foreground