iOS 7中的UINavigation Back Button原点

Question

我创建了自定义UINavigation Back Button.但是iOS 6和iOS 7中按钮的来源不同.

iOS 6外观:

iOS 7外观:

如何UINavigation Back Button在iOS 7 中将原点设置为与iOS 6中相同？

Answer 1

使用此代码修复左栏按钮位置:

    //First add the following macro:
    #define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)

    //Then customize your navigation bar:
    - (void) initNavigationBar
    {
        UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
        if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0"))
        {
            negativeSpacer.width = -10;
        }
        else
        {
            negativeSpacer.width = 0;
        }

        UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:_customBackButton];
        self.navigationItem.leftBarButtonItems = @[negativeSpacer,backButton];
    }