[IOS] Unified Settings Return button as a custom picture method

We can set the style of the Backbutton by the base class, or we can set the LeftButton and then hide the Backbutton, but then the gesture returns.

Now the solution is to set the background image of the return button as a custom picture, in order to solve the problem that will display the back word, set the title offset to the screen is not visible location.

The complete code is as follows:

    UIImage *backimage = [UIImage imagenamed:@ "Backnor"];    [[Uibarbuttonitem appearance] Setbackbuttonbackgroundimage:[backimage resizableimagewithcapinsets: Uiedgeinsetsmake (0, backImage.size.width, 0, 0)]                                                      forstate:uicontrolstatenormal Barmetrics:uibarmetricsdefault] ;    [[Uibarbuttonitem appearance] Setbackbuttontitlepositionadjustment:uioffsetmake ( -233, 0) Forbarmetrics: Uibarmetricsdefault];

[IOS] Unified Settings Return button as a custom picture method