导航栏字体设置 按钮图片显示原图

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"注册" style:UIBarButtonItemStylePlain target:self action:@selector(registClick)];

self.navigationItem.rightBarButtonItem.tintColor = kUIColorFromRGB(0x2e2e2e, 1);

[self.navigationItem.rightBarButtonItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:14], NSFontAttributeName, nil] forState:UIControlStateNormal];

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"签到" style:UIBarButtonItemStylePlain target:self action:@selector(SignClick)];

[self.navigationItem.leftBarButtonItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:FontSizeChange(14), NSFontAttributeName, kUIColorFromRGB(0x313131, 1),NSForegroundColorAttributeName,nil] forState:UIControlStateNormal];

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithImage:[[UIImage imageNamed:@"sy_icon_search"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] style:UIBarButtonItemStyleDone target:self action:@selector(SignClick)];