統一修改 UINavigationBar backItem

{

    UINavigationBar * navigationBar = [UINavigationBar appearance];

    //返回按鈕的箭頭顏色

    [navigationBar setTintColor:[UIColor whiteColor]];

    //設置返回樣式圖片

    UIImage *image = [UIImage imageNamed:@"backArrow"];

    image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

    navigationBar.backIndicatorImage = image;

    navigationBar.backIndicatorTransitionMaskImage = image;

    

    

    UIBarButtonItem *buttonItem = [UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil];

    UIOffset offset;

    offset.horizontal = -500;

    [buttonItem setBackButtonTitlePositionAdjustment:offset forBarMetrics:UIBarMetricsDefault];

}

 

 

還有這裏的方法

http://blog.csdn.net/zhangao0086/article/details/22432387

 

兩個方法都不是特別的完美

後續補充