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    //按钮的颜色
    [self.navigationBar setTintColor:[UIColor whiteColor]];

    //标题颜色
   [self.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor whiteColor],NSFontAttributeName:[UIFont systemFontOfSize:16]}];

    //背景颜色
    self.navigationBar.barTintColor = [UIcolor red];